Enhanced performance of the dehydrogenation by the reduction of coke formation using pre-activated co2

The present disclosure addresses the deficiencies described above by providing systems and methods for enhancing the efficiency and yield of alkene production. The methods and systems provide for the use of activated CO 2 in a dehydrogenation reactor along with an alkane stream. Through the use of the methods and systems of the invention, catalyst deactivation by coke deposition is reduced and the selectivity and efficiency of the dehydrogenation reaction is improved.

IMMERSION DEVICE FOR SLAG SAMPLE COLLECTION

An immersion device for collecting a slag sample and measuring a molten metal parameter is provided. The immersion device includes an inflow conduit for directing the molten slag to a slag sample chamber and a measuring element for measuring the parameter of the molten metal. The inflow conduit and the measuring element are arranged in the top area of an immersion end of the immersion device and/or are facing towards an immersion direction. During immersion in the immersion direction into the molten slag and then the molten metal, the molten slag enters an external portion of the inflow conduit and is directed through an inner portion of the inflow conduit to the slag sample chamber. Reliable slag collection and molten metal measurement also in a converter can thereby be achieved. A method of collecting a slag sample and measuring a molten metal parameter is also provided. 110201020. Immersion device ( , ) for collecting a slag sample and measuring a molten metal parameter , the immersion device ( , ) comprising:{'b': 5', '25', '18', '7', '27, 'an inflow conduit (, ) for directing molten slag () to a slag sample chamber (, ); and'}{'b': 1', '21', '19, 'claim-text': [{'b': 5', '25, 'wherein the inflow conduit (, ) comprises an external portion and an internal portion,'}, {'b': 5', '25', '1', '21', '2', '22', '17, 'wherein the inflow conduit (, ) and the measuring element (, ) are both arranged in the top area of an immersion end of the measuring head (, ) and/or are both facing towards an immersion direction (),'}, {'b': 10', '20', '17', '18', '19', '18', '5', '25', '5', '25', '7', '27, 'wherein the immersion device (, ) is composed such that during immersion in the immersion direction () into the molten slag () and then the molten metal (), the molten slag () enters the external portion of the inflow conduit (, ) and is directed through the inner portion of the inflow conduit (, ) to the slag sample chamber (, ), and'}, {'b': 5', '25', '5', '25', '18', '19, 'wherein ...

METHOD OF BATCHING AND SCHEDULING FOR STEELMAKING PRODUCTION WITH PLANT-WIDE PROCESS CONSIDERATION

Provided is a method of batching and scheduling for steelmaking production with plant-wide process consideration, including the steps of: establishing a mathematical model for quantitatively describing the decision problem of batching on steelmaking and continuous casting procedures; starting from the production capacity balance between parallel equipment of the same procedure, and material flow convergence between upstream and downstream procedures, establishing a model for the assignment and sequencing of batches on continuous casting equipment and the time dimension; integrating the batching plan and the production scheduling scheme, issuing the batching plan and the production scheduling scheme integrated to all production and manufacturing units at the steelmaking stage. The present invention improves product quality, increases the material yield, resource utilization rate and equipment operation efficiency, realizes load balance on parallel equipment and smooth material linkage between serial equipment, and reduces the material flow transportation jam, downstream equipment waiting time and inventory. 1. A method of batching and scheduling for steelmaking production with plant-wide process consideration , comprising the following steps of:step 1, describing a production environment by constructing a directed topological network,wherein each node on the directed topological network represents a specific production unit or inventory equipment, including: a converter, a refining furnace, a continuous caster, a slab warehouse, a hot rolling mill, a temper mill, a hot-rolled coil warehouse, an acid pickling unit and an acid rolling mill; each arc on the directed topological network represents a specific material transfer course from one unit or inventory equipment to another unit or inventory equipment, including: molten steel, slabs, hot-rolled coils and cold-rolled coils;step 2, according to quality requirements for finished products by different customers' orders ...

METHOD FOR ELUTING CALCIUM FROM STEELMAKING SLAG, AND METHOD FOR COLLECTING CALCIUM FROM STEELMAKING SLAG

The purpose of the present invention is to provide a method for eluting Ca from steelmaking slag such that a large amount of Ca can be eluted from the steelmaking slag into an aqueous solution containing carbon dioxide. The present invention executes, in this order: a step for removing an iron-containing compound from steelmaking slag by performing magnetic separation on the steelmaking slag; and a step for bringing the steelmaking slag subjected to magnetic separation into contact with an aqueous solution containing carbon dioxide. In addition, the aqueous solution containing carbon dioxide and the steelmaking slag are brought into contact with each other while the steelmaking slag is being pulverized or the surface of the steelmaking slag is being ground. 1. A method for eluting calcium from steelmaking slag , the method comprising:subjecting the steelmaking slag to magnetic separation to remove a compound containing iron from the steelmaking slag; andcontacting the steelmaking slag subjected to the magnetic separation with an aqueous solution containing carbon dioxide.2. The method according to claim 1 , wherein the contacting includes contacting the steelmaking slag with the aqueous solution containing carbon dioxide while fracturing or pulverizing the steelmaking slag claim 1 , or grinding a surface of the steelmaking slag.3. The method according to claim 1 , further comprising:subjecting the steelmaking slag to hydration treatment, andwherein the contacting includes contacting the steelmaking slag subjected to the magnetic separation and the hydration treatment with the aqueous solution containing carbon dioxide.4. The method according to claim 3 , wherein the hydration treatment is performed before the magnetic separation.5. The method according to claim 3 , wherein the hydration treatment is performed after the magnetic separation.6. The method according to claim 3 , wherein the hydration treatment is performed simultaneously with the magnetic separation.7. ...

Procédé et appareil pour introduire un courant de gaz de traitement dans un bain de métal en fusion

低酸素カルシウム処理鋼の製造方法

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

一种钢板及钢中b元素含量的控制方法

本申请涉及一种钢板及钢中B元素含量的控制方法，钢中B元素含量的控制方法，包括以下步骤：于转炉吹炼前投加废钢、铁水以及用于合金化的物质，在与钢的种类相应的吹炼模式下进行转炉吹炼；当转炉终点符合出钢要求时出钢，出钢后的钢水加入硅铁和硅锰合金进行合金化以及脱氧；脱氧后进入LF精炼，于LF精炼中加铝脱氧。本申请实施例所述的钢中B元素含量的控制方法可以有效的控制成品中B含量。

Steel melting method in converter

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy, particularly, to processes of steel melting in converter. Metal stock is supplied in converter in the form of liquid cast iron and scrap metal, slag-forming materials, agglomerate, melt blowing with oxygen from above through the tuyere, change of the tuyere position above the melt level in the calm state and oxygen consumption during the blowdown. Additive of agglomerate is carried out prior to beginning of melt blowing with oxygen or / and during melt blowing by oxygen till the moment of intensive decarbonisation of melt; at that, agglomerate is used additionally containing oxides of zinc and titanium. EFFECT: invention enables to develop a steelmaking technology in a converter which enables to recycle zinc-containing wastes, reduces the cost of producing steel and increases yield of the steel. 4 cl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 716 554 C1 (51) МПК C21C 5/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21C 5/28 (2020.01) (21)(22) Заявка: 2019130355, 24.09.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 12.03.2020 (73) Патентообладатель(и): Публичное акционерное общество "Северсталь" (ПАО "Северсталь") (RU) (45) Опубликовано: 12.03.2020 Бюл. № 8 2 7 1 6 5 5 4 R U (54) Способ выплавки стали в конвертере (57) Реферат: Изобретение относится к металлургии, конкретнее к процессам выплавки стали в конвертере. Осуществляют подачу в конвертер металлошихты в виде жидкого чугуна и металлолома, шлакообразующих материалов, агломерата, продувку расплава кислородом сверху через фурму, изменение по ходу продувки положения фурмы над уровнем расплава в спокойном состоянии и расхода кислорода. Присадку агломерата осуществляют до начала продувки расплава кислородом или/и во время Стр.: 1 (56) Список документов, цитированных в отчете о поиске: RU 2159289 С1, 20.11.2000. RU 2112045 С1, 27.05.1998. RU 2049118 С1, 27.11.1995. JP ...

Manufacturing apparatus for molten metal and method thereof

본 발명은 강의 제조 장치 및 그 방법에 관한 것으로, 정련 용기에 장입된 용선을 정련하여 강을 제조하는 방법으로서, 공기에 산소를 혼합하는 1차 산소부화 과정과; 상기 산소가 혼합된 공기를 열풍로에서 가열하여 열풍을 제조하는 과정과; 상기 열풍로에서 제조된 열풍을 상기 열풍로에 연결되는 열풍 공급배관으로 배출하는 과정과; 상기 열풍 공급배관에 산소를 공급하여 상기 열풍에 산소를 혼합하는 2차 산소부화 과정과; 상기 산소가 혼합된 열풍을 상기 열풍 공급배관에 연결되는 랜스를 통해 상기 정련 용기에 취입하는 과정;을 포함하여, 제강공정에서 발생하는 배가스량을 저감시키고, 원료를 용해시키는데 필요한 열원을 확보할 수 있다.  The present invention relates to an apparatus and a method for manufacturing steel, and a method for manufacturing steel by refining a molten iron charged in a refining vessel, comprising: a primary oxygen enrichment process for mixing oxygen with air; Heating the air mixed with oxygen in a hot air furnace to produce hot air; Discharging hot air produced in the hot air path to a hot air supply pipe connected to the hot air path; A secondary oxygen enrichment process for supplying oxygen to the hot air supply pipe to mix oxygen with the hot air; And a step of blowing the hot air mixed with the oxygen into the refining vessel through a lance connected to the hot air supply pipe, thereby reducing the amount of exhaust gas generated in the steelmaking process and securing a heat source necessary for dissolving the raw material have.

Process for the removal of contaminating elements from pig-iron steel other metals and metal alloys

A process for the removal of contaminating chemical elements from pig-iron, steel and other metals as well as metal alloys in the course of refining processes with oxygen blast, is characterised by introducing ozone control the quantity of free oxygen radicals. Further the temperature of the smelting bath are controlled.

気体酸素吹込みによる溶銑の優先脱Ｓｉ方法

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

基于正则化极限学习机的转炉炼钢终点锰含量预测方法

本发明提出基于正则化极限学习机的转炉炼钢终点锰含量预测方法，包括以下步骤：正则化极限学习机的输入变量的选取、样本数据的预处理、归一化处理、构建正则化极限学习机和通过正则化极限学习机进行转炉炼钢终点锰含量预测；本发明通过正则化极限学习机对转炉炼钢终点锰含量进行预测，在训练过程中不需要调整网络的输入权值以及隐藏层的偏置，只需设置网络的隐藏层节点个数、正则化系数和激活函数就能产生唯一的最优解，且该模型训练速度快、预测精度高、适应性较好，同时该方法测量适应性好、训练时间短、不易陷入局部最优值，可以明显提高转炉炼钢终点锰含量的预测精度和运算速率。

环保型转炉溅渣护炉料及其制备方法

本发明公开了一种环保型转炉溅渣护炉料及其制备方法，所述环保型转炉溅渣护炉料的各原料的重量份数配比为：用后废弃镁碳砖60～80，生白云石20～40，粘结剂0.5～10。本发明使用了转炉用后废弃镁碳砖，既降低了生产成本，又减少了废弃物对环境的污染。同时，在护炉料中加入生白云石，其中所含的氧化钙与氧化镁可与用后镁碳砖中的成分形成熔点适当、粘度高的渣系，再加上生白云石在分解过程中产生的大量二氧化碳气体与射流气体一起，对渣系进行搅拌与喷涂作用，可以使熔渣很容易的粘在转炉炉壁上，起到保护炉衬的作用。

Method for rising temperature of converter

본 발명의 목적은 공취시 노내 내화물의 국부적인 침식이나 전로 취련시 슬래그 재화 불량을 방지하고 노내 내화물의 온도를 승온시켜 분위기 온도의 하락을 방지할 수 있도록 된 전로 공취시 노내 분위기 온도 상승 방법을 제공함에 있다. It is an object of the present invention to provide a method for increasing the atmosphere temperature in a furnace when it is not bleeding to prevent the fall of the ambient temperature by preventing the slag goods failure during the local erosion of the refractory in the furnace or when the converter is blown and raising the temperature of the furnace refractory. Is in. 이에 본 발명은 용선을 전로에 장입하고 취련하는 단계, 취련을 완료하고 용강을 출강하는 단계, 용강 출강 후 슬래그를 배재하지 않은 상태에서 바로 노정립을 하는 정련단계와; 상기 정련단계를 거친 후 바로 전로에 산소를 취입하는 단계, 산소 취입 즉시 승온제를 투입하는 단계를 포함하는 공취단계; 상기 공취 단계 후 잔슬래그를 부분배재 또는 완전배재 하는 단계, 노내에 코크스 또는 부원료를 투입하는 단계, 노내에 질소를 통입하는 단계를 포함하는 코팅 단계를 포함하는 공취시 노내 분위기 온도 상승 방법을 제공한다. Thus, the present invention comprises the steps of charging the molten iron in the converter and blowing, the step of completing the drilling and tapping the molten steel, the refining step of immediately laying in the state without the slag after the molten steel tapping; A blowing step including the step of injecting oxygen into the converter immediately after the refining step and the step of adding a warming agent immediately after the blowing of oxygen; Providing a method for increasing the atmosphere temperature in the furnace at the time of notching comprising a coating step comprising the step of partially or completely disposing of the residual slag after the step of the donating, injecting coke or subsidiary material into the furnace, introducing nitrogen into the furnace. do. 정련단게, 공취단계, 코팅단계, 페로실리콘 Refining step, Deodorization step, Coating step, Ferrosilicon

Method to produce cement clinker and plant to produce cement clinker

FIELD: construction. SUBSTANCE: plant comprises a cyclone heater, a prebaking reactor, a rotary furnace and a clinker cooler. According to the invention fumes from the furnace are sent into the prebaking reactor and even into the cyclone heater. Into the prebaking reactor (4) gas (9) is supplied with high content of oxygen, in which nitrogen content is below 30% and which is the only source of oxygen for the specified reactor. Some (8 a ) gases leaving the cyclone heater are recirculated into the plant so that the appropriate flow is produced, which is necessary for obtaining the suspended condition of raw materials in the specified heater. The other part (8 b ) with high content of carbon dioxide is adapted with the purpose of treatment that makes it possible to limit carbon dioxide emissions into atmosphere, in particular, such as complexing. EFFECT: method improvement. 14 cl, 3 dwg, 2 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 498 181 (13) C2 (51) МПК F27D 17/00 (2006.01) F27B 7/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011107731/02, 17.07.2009 (24) Дата начала отсчета срока действия патента: 17.07.2009 (72) Автор(ы): КОРДОННЬЕ Ален (FR), ДЕВРЁ Себастьян (FR) (73) Патентообладатель(и): ФИВ ФСБ (FR) R U Приоритет(ы): (30) Конвенционный приоритет: 01.08.2008 FR 08/04406 (43) Дата публикации заявки: 10.09.2012 Бюл. № 25 2 4 9 8 1 8 1 (45) Опубликовано: 10.11.2013 Бюл. № 31 (56) Список документов, цитированных в отчете о поиске: ЕР 1923367 А, 21.05.2008. DE 3010909 А1, 01.10.1981. RU 2248946 С2, 27.03.2005. RU 2136622 С1, 10.09.1999. 2 4 9 8 1 8 1 R U (86) Заявка PCT: FR 2009/000883 (17.07.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 01.03.2011 (87) Публикация заявки РСТ: WO 2010/012880 (04.02.2010) Адрес для переписки: 109012, Москва, ул. Ильинка, 5/2, ООО "Союзпатент" (54) СПОСОБ ПОЛУЧЕНИЯ ЦЕМЕНТНОГО КЛИНКЕРА И УСТАНОВКА ДЛЯ ПРОИЗВОДСТВА ЦЕМЕНТНОГО КЛИНКЕРА ...

極低炭素鋼の転炉製鋼法

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

基于数据分析的自动炼钢方法、系统

本申请提供一种基于数据分析的自动炼钢方法，包括：采集转炉炼钢之前的原料信息，原料信息包括废钢质量、铁水质量、碳含量与造渣料配比；根据原料信息查询冶炼数据库中与该原料信息对应的冶炼操作模式和冶炼结果，利用不同冶炼操作模式与不同冶炼结果比较得到最优冶炼操作模式；最优冶炼操作模式包括终点成分合格、温度合格且成本最低；利用最优冶炼操作模式生成炼钢设备的控制指令，炼钢设备按照控制指令进行炼钢。本申请通过提前采集转炉内原料信息，采用数据分析对比方式得到该原料信息的最优冶炼操作模式，从而实现自动冶炼钢铁的目的，提高自动化冶炼水平，提高钢水质量，降低操作人员的劳动强度。

A kind of pneumatic steelmaking compensation method for thermal

本发明属于冶金技术领域，具体涉及一种转炉炼钢热补偿方法；本发明克服了现有技术存在的不足，提供了一种添加硅质发热剂作为转炉炼钢热补偿的方法；提供的技术方案为：按照以下步骤进行：1）倾炉，加入废钢，兑铁水摇正炉体；2）降枪开吹，同时加入第一批渣料；3）3‑5min后加入第二批渣料继续吹炼，吹炼后期加入硅碳合金，加入量为每吨钢水1‑5kg，其中成分按重量百分含量：硅含量为50‑60%，碳含量为20‑35%；4）倒炉，测温，取样，并确定补吹时间或出钢；5）出钢，同时将合金加入钢包中，进行脱氧合金化。

Apparatus for producing low nitrogen steel

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

A method for manufacturing steel using returned molten steel

본 발명은 전로조업을 통한 강의 제조에 관한 것이며; 그 목적은 전회(前回) 전로정련후 회송된 용강을 전로에 재장입하여 정련할 때 보다 적절한 취련패턴을 설정하므로써 슬래그의 재화를 용이하게 하면서 슬로핑을 방지하여 최종 소강중의 [P] 성분을 안정적으로 가져갈 수 있는 강의 제조방법을 제공함에 있다. The present invention relates to the production of steel through converter operation; Its purpose is to set the appropriate blow pattern when reloading the molten steel returned to the converter after the previous converter refining, thereby facilitating slag goods while preventing the sling, thereby reducing the [P] component in the final steel sheet. The present invention provides a method for manufacturing steel that can be stably taken. 상기 목적달성을 위한 본 발명은 전회(前回)에서 정련된 후 회송된 용강중의 용존산소를 20ppm이하로 탈산하여 전로에 장입하는 단계; 전회에서 정련할 때 실시된 말기 취련시의 산소랜스 높이와 동등하거나 적어도 12% 이내에서 상향된 높이로 산소랜스를 조정하고, 또한 전회에서 정련 실시된 말기 유량보다 송산유량을 10~ 35% 하향하여 상기에서 장입된 회송용강에 송산하여 취련하는 단계; 및 상기 취련 개시 직후에 용강중에 생석회를 투입함과 동시에 전체 투입될 소결광 중 먼저 20~ 50%의 소결광을 투입하고 나서 나머지 소결광을 취련진행 60%까지 전부 투입하는 단계를 포함하여 구성되는 회송용강을 이용한 강의 제조방법에 관한 것을 그 기술적 요지로 한다. The present invention for achieving the above object is a step of deoxidizing dissolved oxygen in the molten steel that is returned after refining in the last time to 20ppm or less charged to the converter; Adjust the oxygen lance to a height that is equal to or higher than at least 12% of the oxygen lance at the last stage of refining at the last refining, and lowers the flow rate by 10 to 35% from the last flow at the last refining. Transmitting to the revolving molten steel charged in the above; And immediately after the start of the injection of the quick-lime in the molten steel and at the same time the first sintered ore of 20 to 50% of the sintered ore to be added to all the sintered molten steel comprising the step of injecting the remaining sintered ore up to 60% The technical gist of the manufacturing method of the used steel is taken.

Process and equipment for effecting savings in compressed gases during injection of solids by means of pneumatic conveyors

The process and apparatus for effecting savings of compressed injection gs such as oxygen or nitrogen when injecting solids such as burnt lime pneumatically into a receiving vessel, such as the blow-line to steel melt has a solids conveying system, a compressed gas supply source and a conduit and valve system functioning in a sequence, by which the compressed gas upon termination of the procedure is collected and thereupon is recycled. The system is equipped with at least one pressure-reservoir to collect the compressed gas from the previous procedure for recycling it. The pressure reservoir is subdivided by a reciprocating divider such as a membrane or a reciprocating piston to subdivide it into two parts of variable volumes, the divider is pushed by the returning compressed saved gas from one wall of the reservoir to the other. Highly compressed gas is blown into the empty part of the reservoir to increase the pressure upon the returned gas. The displacement of the divider from one side to the other is effected by a compressor. Additional pressurized gas is supplied independently.

Manufacture of rail having superior damage resistance

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

System and method for monitoring steelmaking state in converter

本发明属于钢铁冶炼技术领域，具体提供了一种转炉炉内炼钢状态监测系统及方法，包括用于测量炉内反应参数的副枪TSO模块，还包括炉内反应均匀性检测模块及钢渣高度检测模块；炉内反应均匀性检测模块用于根据炉内的钢渣温度及钢水温度，若钢渣温度及钢水温度之间的温度差值大于均匀性预设值，则输出反应不均匀报警以；钢渣高度检测模块用于根据副枪探头在钢渣渣层及钢水层来回进出时的温度及氧电势变化来获取钢渣渣层的高度，若钢渣渣层高度大于预设高度值时，输出渣面高度过高报警。通过获取副枪测量曲线的取值，判断转炉炉内反应状态是否存在异常，采取相应措施，减少转炉事故。

Molten iron pours into ditch equipment

本发明提供一种不依赖于起重机作业者的技术、且能够在不使倾注沟破损的情况下将倾注沟卸下的铁水倾注沟设备。即使在倾注沟1的上方对置配设有2个出铁沟2的情况下，在对来自出铁沟2的铁水的浇注位置进行调整时，通过使上部台车用车轮9沿着下部台车12的短尺寸导轨11移动，可使倾注沟1的位置与上部台车8一同在出铁沟2的长度方向上移动，在将倾注沟1卸下时，通过使下部台车的车轮沿着地上导轨移动，可使倾注沟1的位置与下部台车一同在与出铁沟的长度方向正交的方向上移动，由此，可以在不干扰出铁沟2的情况下将倾注沟1提升到上方。

Method of afterburning of combustible gases in working space of steel melting units and device for its embodiment

FIELD: metallurgy, in particular, processes and designs of devices for afterburning of effluent gases from steel melting units. SUBSTANCE: method includes supply of oxygen jets to the working space of steel melting unit above metal level. Oxygen jets are oriented in tangential direction to refractory surface of diffuser. Afterburning of combustible gases is effected on the refractory surface. The device includes body of lance with pipelines. Lance body is made in form of diffuser with opening angle of 140-179 deg, and diffuser top has cylindrical sleeve with bottom. Pipelines are running to the sleeve along tangent in horizontal plane. Diffuser body is made of refractory material, for instance, corundum, mullite- corundum or periclase-chromate. Besides, diffuser body is metallic and water- cooled and its internal surface is coated with refractory material. EFFECT: higher efficiency. 7 cl, 2 dwg ОЗ 0Сс ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2081 180 ' 13) СЛ С 21С 5/48, 5/52 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 95111681102, 06.07.1995 (46) Дата публикации: 10.06.1997 (56) Ссылки: Авторское свидетельство СССР М 1439129, кл. С 21 С 5/48, 1988. (71) Заявитель: Московский государственный институт стали и сплавов (технологический университет) (72) Изобретатель: Арутюнов В.А., Стомахин А.Я., Егоров А.В., Лебедев В.И. , Роменец В.А., Валавин В.С., Лопатин О.П., Козлов Д.Д., Беремблюм Г.Б., Бреус В.А. ‚ Чумарин Б.А. (73) Патентообладатель: Московский государственный институт стали и сплавов (технологический университет) (54) СПОСОБ ДОЖИГАНИЯ ГОРЮЧИХ ГАЗОВ В РАБОЧЕМ ПРОСТРАНСТВЕ СТАЛЕПЛАВИЛЬНЫХ АГРЕГАТОВ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ (57) Реферат: Использование: металлургия, конкретнее, в процессах и конструкциях устройств дожигания отходящих газов из сталеплавильных агрегатов. Технический эффект при использовании изобретения заключается в повышении эффективности процесса дожигания горючих ...

Method for slag release during production of steel with ultra-low phosphorus content and method for production of steel with ultra-low phosphorus content

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy, in particular to the production of steel with ultra-low phosphorus content containing less than 0.003% of phosphorus. Liquid steel is first mixed with lime to obtain main slag, then, oxygen blowdown is carried out to increase oxidizability of main slag, a carbon-containing reducing agent is added, so that, during carbon oxidation with the release of large amount of gaseous carbon monoxide, phosphates are caught, and main slag is quickly foamed, and it flows out of a hole of a steel filling ladle, excluding conditions for subsequent rephosphorization. EFFECT: invention allows for highly efficient production of steel with ultra-low phosphorus content, while the production technology has a good dephosphorization effect and has low-cost price. 16 cl, 4 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 761 852 C1 (51) МПК C21C 7/064 (2006.01) C21C 5/52 (2006.01) C21C 5/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21C 7/064 (2021.02); C21C 5/52 (2021.02); C21C 5/28 (2021.02) (21)(22) Заявка: 2020105196, 23.05.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 13.12.2021 03.12.2018 CN 201811463555.4 (45) Опубликовано: 13.12.2021 Бюл. № 35 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 19.08.2020 (86) Заявка PCT: 2 7 6 1 8 5 2 R U (87) Публикация заявки PCT: WO 2020/113911 (11.06.2020) Адрес для переписки: 190900, г. Санкт-Петербург, BOX 1125, Нилова Мария Иннокентьевна (73) Патентообладатель(и): НАНЬЯН ХАНЬЕ СПЕШАЛ СТИЛ КО., ЛТД (CN) (56) Список документов, цитированных в отчете о поиске: CN 104195290 A, 10.12.2014. CN 1584096 А, 23.02.2005. RU 2007129747 A, 10.02.2009. SU 1496637 А3, 23.07.1989. RU 2055909 С1, 10.03.1996. SU 415313 A, 15.02.1974. SU 406901 А, 21.11.1973. RU 2001123 С1, 15.10.1993. (54) Способ выпуска шлака в процессе производства стали со сверхнизким содержанием фосфора и способ производства стали ...

Production of controlling grain for steel bath temperature

Facility for hot metal manufacturing, directly using small or lump coal and powdered iron ores, method for its production, complete steel mill, using this facility and this manufacturing method

FIELD: metallurgy. SUBSTANCE: group of inventions concerns options of method and facility for hot metal manufacturing using small or lump coal and powdered iron ores and holding of high factor of iron-bearing ores reduction during reduction by gas of iron-bearing ores using reducing coal gas produced from coal. Group of inventions also includes complete steel mill using facility for hot metal manufacturing providing receiving of hot-rolled steel sheet, and also its manufacturing method. EFFECT: creation of facility for hot metal manufacturing with holding of high factor of iron-bearing ores reduction during reduction by gas of iron-bearing ores using reducing coal gas produced from coal. 42 cl, 8 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 339 702 (13) C2 (51) ÌÏÊ C21B 13/14 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2006119217/02, 06.12.2004 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 06.12.2004 (30) Êîíâåíöèîííûé 05.12.2003 KR 05.12.2003 KR 03.12.2004 KR ïðèîðèòåò: 10-2003-0088033 10-2003-0088035 10-2004-0101147 (43) Äàòà ïóáëèêàöèè çà âêè: 10.01.2008 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: WO 03/025230 À1, 27.03.2003. WO 02/50219 À1, 27.06.2002. RU 2011471 Ñ1, 30.04.1994. RU 2132246 Ñ1, 27.06.1999. RU 2135597 Ñ1, 27.08.1999. (86) Çà âêà PCT: KR 2004/003192 (06.12.2004) (73) Ïàòåíòîîáëàäàòåëü(è): ÏÎÑÊÎ (KR), Ôåñò-Àëïèíå Èíäóñòðèàíëàãåíáàó ÃìáÕ óíä Êî (AT) R U 2 3 3 9 7 0 2 (87) Ïóáëèêàöè PCT: WO 2005/054520 (16.06.2005) Àäðåñ äë ïåðåïèñêè: 191036, Ñàíêò-Ïåòåðáóðã, à/ 24, "ÍÅÂÈÍÏÀÒ", ïàò.ïîâ. À.Â.Ïîëèêàðïîâó, ðåã.¹ 0009 (54) ÓÑÒÀÍÎÂÊÀ ÄËß ÈÇÃÎÒÎÂËÅÍÈß ÆÈÄÊÎÃÎ ×ÓÃÓÍÀ, ÍÅÏÎÑÐÅÄÑÒÂÅÍÍÎ ÈÑÏÎËÜÇÓÞÙÀß ÌÅËÊÈÅ ÈËÈ ÊÓÑÊÎÂÛÅ ÓÃËÈ È ÏÛËÅÂÈÄÍÛÅ ÆÅËÅÇÍÛÅ ÐÓÄÛ, ÑÏÎÑÎÁ ÅÃÎ ÈÇÃÎÒÎÂËÅÍÈß, ÊÎÌÏËÅÊÑÍÛÉ ÑÒÀËÅËÈÒÅÉÍÛÉ ÇÀÂÎÄ, ÈÑÏÎËÜÇÓÞÙÈÉ ÝÒÓ ÓÑÒÀÍÎÂÊÓ È ÝÒÎÒ ÑÏÎÑÎÁ ÈÇÃÎÒÎÂËÅÍÈß (57) Ðåôåðàò: Èçîáðåòåíèå îòíîñèòñ ê âàðèàíòàì ñïîñîáà è óñòàíîâêè äë èçãîòîâëåíè æèäêîãî ...

Powder transporting method by gas

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method of steelmaking in basic oxygen furnace

FIELD: metallurgy. SUBSTANCE: method involves solid charge feeding, hot-metal charging, further oxygen purging of the bath, additing slag-forming materials and solid oxidizers. Metal scrap and semi-finished product consisting of an iron-carbon alloy and iron oxides for metal conversion are used as the solid charge. The semi-finished product for metal conversion is produced in the form of compressed packets, inside which capsules filled with iron oxides with the iron content of at least 55% and moisture of no more than 12% are put prior to compression. Mass fraction of oxides in the packet is 35-45%, and the mass fraction of compressed packets is 20-45% of the total weight of the scrap metal and compressed packets. Containers of ferrous materials are used as capsules. EFFECT: reduced scrap metal consumption and reduced steelmaking cost. 1 tbl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 612 246 C1 (51) МПК C21C 5/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015144623, 16.10.2015 (24) Дата начала отсчета срока действия патента: 16.10.2015 Дата регистрации: (72) Автор(ы): Дригун Эрнст Михайлович (RU), Песин Александр Моисеевич (RU), Пустовойтов Денис Олегович (RU) Приоритет(ы): (22) Дата подачи заявки: 16.10.2015 (56) Список документов, цитированных в отчете о поиске: RU 2075513 C1, 20.03.1997. RU (45) Опубликовано: 03.03.2017 Бюл. № 7 2107737 C1, 27.03.1998. RU 2241045 C1, 27.11.2004. GB 1025229 A, 06.04.1966. R U (57) Формула изобретения Способ выплавки стали в кислородном конвертере, включающий загрузку твердой шихты, заливку жидкого чугуна, последующую продувку ванны кислородом, ввод шлакообразующих и твердых окислителей, в котором в качестве твердой шихты используют полуфабрикат для металлургического передела, состоящий из железоуглеродистого сплава и окислов железа, и металлический лом, отличающийся тем, что полуфабрикат для металлургического передела изготавливают в ...

Patent JPS6231045B2

Treatment apparatus for molten metal and the method thereof

본 발명은 용융물 처리장치 및 그 처리방법에 관한 것으로, 용탕이 수용될 수 있는 공간을 갖는 용기와; 오존(O 3 )을 발생하는 오존 발생유닛; 및 상기 오존 발생유닛에서 발생된 오존을 상기 용기 내부로 공급하는 공급유닛;을 포함하며, 제강 공정에 소요되는 시간을 단축하여 생산성을 향상시킬 수 있다. The present invention relates to a melt processing apparatus and a processing method thereof, comprising: a container having a space in which a molten metal can be accommodated; An ozone generating unit generating ozone (O 3 ); And a supply unit for supplying ozone generated in the ozone generating unit into the container, and may improve productivity by shortening a time required for the steelmaking process.

Deoxidation control method suitable for smelting low-carbon low-silicon steel by converter

本发明公开了一种适用于转炉冶炼低碳低硅钢的脱氧控制方法，生产低碳低硅钢脱氧路线采用转炉+钢包的分步操作方法进行脱氧：出钢前期采用铝系脱氧剂对转炉内的钢水进行沉淀脱氧，转炉内脱氧后的钢水出钢至钢包后采用二次脱氧进行合金化，脱氧顺序由弱到强采用电石+低碳锰铁+铝锰铁+硅钙系合金的方式；3）根据碳氧平衡理论及各合金元素脱氧量进行数据回归拟合，得出分步脱氧模型参数的二次回归方程，利用函数建立的数学模型制定各阶段加入量参照表，通过现场生产验证钢包氧含量可以稳定控制在15～30ppm之间，满足低硅低碳钢等钢种直上对流动性及夹杂物形态的需求。

It is a kind of that mud is sunk as the converter slagging agent and preparation method of raw material using whirling well

一种以旋流井沉泥为原料的转炉化渣剂及制备方法，其组分为：旋流井磁选物70～80％，粘结剂8～15％，膨润土10～20％；旋流井磁选物为铁质氧化物和单质铁，粘结剂为废弃塑料制品。采用磁选设备将沉泥中的铁质氧化物及单质铁选出；利用铸坯余热对磁选出的物料进行烘干；将烘干物料及熔化后冷凝成块的废弃塑料制品进行破碎；按烘干物料70～80wt％、膨润土10～20wt％、粘结剂8～15wt％的比例配料，并放入搅拌机内加水搅拌混匀；通过压球机压制成直径为30～50mm的物料球；分三个阶段对物料球进行低温烘烤，烘烤后降至室温。本发明利用钢厂废弃资源及铸坯余热，可加快转炉前期化渣速度，增加钢水收得率，降低冶炼成本，并实现塑料生活垃圾的合理利用。

Method for steel making in oxygen converter

FIELD: metallurgy. SUBSTANCE: invention relates to the field of ferrous metallurgy, in particular to the production of steel in a converter. Method includes loading of scrap and semi-product containing iron oxides, hot-metal charging, refining of smelting and slag-forming entering. Semi-product is used in the form of compact blanks obtained by fusing in the furnace components of a mechanical mixture consisting of beneficated ore with an iron content of at least 60 % and scrap metal, the mass fraction of iron oxides in which is 10–70 %, and the subsequent casting of the alloy into molds. Invention makes it possible to reduce the chemical inhomogeneity by removing impurities in the fusion step of its components and provides the lowest dissociation coefficient, equal to 8 to achieve the best conditions for the dissociation of iron oxides in the process of steelmaking. In addition, replacing a portion of lightweight scrap metal with a compact blank will reduce the duration of the process of charging of furnace and the consumption of scrap metal, as well as improve the quality of the steel to be melted and reduce its cost. EFFECT: replacement of a portion of lightweight scrap metal with a compact blank will allow to reduce the duration of the process of charging of furnace and the consumption of scrap metal, and also to improve the quality of the steel to be melted and to reduce its cost. 1 cl, 2 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 647 432 C2 (51) МПК C21C 5/52 (2006.01) C21C 5/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21C 5/52 (2006.01); C21C 5/28 (2006.01) (21)(22) Заявка: 2016131739, 01.08.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "ЧерметИнформСистемы" (RU) 15.03.2018 (43) Дата публикации заявки: 06.02.2018 Бюл. № 4 (56) Список документов, цитированных в отчете о поиске: RU 2075513 C1, 20.03. ...

Patent JPS622004B2

Semi-finished product for steel-making

FIELD: metallurgy.SUBSTANCE: invention relates to the field of ferrous metallurgy, in particular to the production of a semi-finished product in the form of a semi-finished product for steelmaking. Said semi-product is made in the form of a steel capsule filled with iron oxides with an iron content of at least 55 % and moisture content of no more than 12 % and scrap metal not exceeding 250 mm, the mass fraction of iron oxides in the intermediate being 10–70 %.EFFECT: invention makes it possible to achieve the best conditions for the dissociation of iron oxides in the process of steel smelting, to reduce the consumption of scrap metal, to improve the quality of the steel produced and to reduce its cost.1 cl, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 667 929 C1 (51) МПК C21C 5/28 (2006.01) C21C 5/52 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21C 5/28 (2006.01); C21C 5/52 (2006.01) (21)(22) Заявка: 2017121788, 20.06.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "ЧерметИнформСистемы" (RU) 25.09.2018 (56) Список документов, цитированных в отчете о поиске: RU 2612246 С1, 03.03.2017. RU (45) Опубликовано: 25.09.2018 Бюл. № 27 (54) ПОЛУПРОДУКТ ДЛЯ СТАЛЕПЛАВИЛЬНОГО ПРОИЗВОДСТВА (57) Реферат: Изобретение относится к области черной доля окислов железа в полупродукте составляет металлургии, в частности к получению 10-70%. Изобретение позволяет достичь полуфабриката в виде полупродукта для наилучших условий диссоциации окислов железа сталеплавильного производства. Полупродукт в процессе выплавки стали, снизить расход выполнен в виде стальной капсулы, наполненной металлического лома, повысить качество окислами железа с содержанием железа не менее выплавляемой стали и снизить ее себестоимость. 55% и влажностью не более 12% и металлоломом 1 табл. крупностью не более 250 мм, причем массовая R U 2 6 6 7 9 2 9 2075513 С1, ...

Manufacturing method of ultra-low carbon steel

본 발명은 전로 출강 시 산소 농도를 낮게 유지하면서도 탄소 함량을 목표량으로 제어하는 극저탄소강 제조방법에 관한 것으로, 극저탄소강 제조 시 전로 정련 종점에서 용강 내 산소 함량이 0.04~0.05중량%이고, 탄소함량이 0.035중량% 이상이 되도록 정련하여 출강하는 단계와, 상기에서 출강된 용강 내로 Fe-P 합금철을 설정된 양으로 투입하여 전로 출강 시 유출된 슬래그와 상기 Fe-P 합금철의 반응에 의하여 용강 내 탄소 함량은 감소하고 산소 함량은 유지시키는 단계 및 상기에서 산소 함량이 유지된 용강을 RH 진공탈가스 공정으로 이송하여 미세 성분 조정을 실시하는 단계를 포함하는 극저탄소강 제조방법을 제공한다.

Method and apparatus for continuous smelting of metal melting stock

FIELD: metallurgy. SUBSTANCE: metal scrap and/or iron are loaded in a bath of an aggregate. Gas-type fuel and oxygen by radial sprays through side walls are fed into restoring tongue of flame over molten bath in the lower part of the aggregate. Oxidizer is fed over the fuel spray in quantities, that are necessary for full burning of the fuel. Then metal and slag through holes in a side wall are poured out into a ladle. Oxygen is fed into the restoring tongue of flame with oxidizer consumption factor of 0.8 - 0.9. Metal is poured out together with slag. During change of ladle after it is filled, the aggregate is inclined so, that the level of the molten bath is lower, than pouring out holes. Apparatus to realize the method has at least one burner, located on a wall of a transitional receiver coaxially with one of its canals. Pouring out canal of the transitional receiver is made in parallel to longitudinal axis of the body. An air lance is located over burners. The body is mounted on the transverse shaft and is capable to turn. EFFECT: method and apparatus are used for continuous smelting of metal melting stock. 5 cl, 1 dwg ОДС пы Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ” 2015 170‘ (51) МПК 13) СЛ С 21 В 13/00, С 21 С 5/42 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 4613091/02, 16.12.1988 (30) Приоритет: 17.12.1987 АТ А 3341/87 (46) Дата публикации: 30.06.1994 (56) Ссылки: 1. Патент США М 4556418, кл. С 21В 11/02, 1985.2. Мариенбах И.М. и Баринов Н.А. Развитие ваграночного производства. М. Машгиз, 1961, с.264. (71) Заявитель: Фоест-Альпине Шталь Донавиц ГмбХ (АТ) (72) Изобретатель: Людвиг фон Богданди[ОЕ], Герхард Миттер[АТ], Отго Келлер[АТ], Люциан Похмарски[АТ ] (73) Патентообладатель: Фоест-Альпине Шталь Донавиц ГмбХ (АТ) (54) СПОСОБ НЕПРЕРЫВНОГО ПЛАВЛЕНИЯ МЕТАЛЛОШИХТЫ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ (57) Реферат: Использование: В частности при непрерывном плавлении металлошихты. Сущность изобретения: ...

Steel production method

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy, in particular to production of steel in oxygen converters using hot briquetted iron (HBI). Steel is melted out in oxygen converter, at that, into metal blanking is introduced HBI in amount of not more than 20 % of total weight of metal filling, and melting blowdown is performed by adding HBI in portions of 0.1–8.0 t with total flow of not more than 50 t, wherein additive of last portion HBI is performed not later than 10 minutes from the beginning of blowdown. EFFECT: invention increases amount of charge introduced into the mixture HBI as initial raw material for a range with strict requirements for content of residual elements and harmful gases, obtaining maximum degree of reduction of iron from iron oxides HBI in the absence of local sintering effect HBI, and also to increase yield of non-defective steel. 4 cl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 699 468 C1 (51) МПК C21C 5/28 (2006.01) C21C 5/52 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21C 5/28 (2019.05); C21C 5/52 (2019.05) (21)(22) Заявка: 2018145379, 19.12.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 05.09.2019 (73) Патентообладатель(и): Публичное акционерное общество "Северсталь" (ПАО "Северсталь") (RU) (45) Опубликовано: 05.09.2019 Бюл. № 25 2 6 9 9 4 6 8 R U (54) СПОСОБ ПРОИЗВОДСТВА СТАЛИ (57) Реферат: Изобретение относится к области металлургии, в частности к производству стали в кислородных конвертерах с использованием в шихте горячебрикетированного железа (ГБЖ). Выплавку стали осуществляют в кислородном конвертере, при этом в состав металлозавалки вводят ГБЖ в количестве не более 20% от общей массы металлозавалки, а по ходу продувки плавки осуществляют присадку ГБЖ порциями по 0,1-8,0 т с общим расходом не более 50 т, при этом присадку последней порции ГБЖ Стр.: 1 (56) Список документов, цитированных в отчете о поиске: RU 2542157 С1, 20.02.2015. ...

A method for manufacturing a high carbon fluid metal in a convertor

PURPOSE: A method for manufacturing high carbon molten steel in converter is provided to manufacture high carbon molten steel by consistently measuring carbon content after charging a mixture of low and high phosphorus hot metals into the converter, and computing additional and total oxygen blowing volume at the same time. CONSTITUTION: The method for manufacturing high carbon molten steel in converter comprises the steps of mixing low phosphorus hot metal which phosphorus content is reduced to 0.04 wt.% or less by passing through pretreatment step in a torpedo or ladle with high phosphorus hot metal of which phosphorus content is maintained to 0.1 wt.% by not passing through the pretreatment step so that phosphorus content of a mixture is maintained to 0.06 wt.% or less; measuring carbon content in the carbon content range of 0.8 to 1.2 wt.% using a sub lance in the state that blowing operation is initiated after charging iron scrap and a mixed hot metal having phosphorus content of 0.06 wt.% or less into the converter; obtaining an additional oxygen blowing volume using an expression, additional oxygen blowing volume (Nm¬3)=£target carbon content(%)-carbon content measured by sublance(%)|/100xcharging amount of hot metal(ton)x1,000,000(g/ton)/12(g/mole)/2x22.4(L/mole)/1000(L/Nm¬3)=(target carbon content-carbon content measured by sub lance)xcharging amount of hot metalx9.3, when carbon content is measured by the sub lance; and obtaining the total oxygen blowing volume using an expression of £additional oxygen blowing volume(Nm¬3)+oxygen blowing volume at sub lance measuring time point(Nm¬3)| if the additional oxygen blowing volume is obtained, and stopping blowing operation at a time point when the total oxygen blowing volume is blown.

Converter refining method of ultra-low lining steel using Tallinn molten iron

본발명은 탈린 용선을 이용한 극저린강의 전로 정련 방법에 관한 것이며, 그 목적하는 바는 전로정련시 부원료 투입방법 및 취련방법의 개선을 통하여 용철중 인을 안정적으로 제거하는데 가장 중요한 것은 슬래그를 효과적으로 제조하는 것이다. 즉, 취련초기~종료까지 철저한 슬래그 재화를 통하여 고온에서도 화학적으로 불안정한 슬래그중 인화합물을 슬래그에 안정적으로 존재시킴으로써 인함량이 0.015중량% 이하의 용강을 용이하게 제조할수 있는 극저린강 제조방법을 제공함에 있다. The present invention relates to a method for refining converters of ultra-low-lining steel using Tallinn molten iron, and its purpose is to effectively manufacture slag, which is most important for stable removal of phosphorus in molten iron through the improvement of secondary raw material input and blowing method. It is. In other words, through the thorough slag goods from the beginning to the end of the sintering, by providing a stable chemically unstable phosphorus compound slag in slag even at high temperature to provide a very low-lining steel manufacturing method that can easily produce molten steel of less than 0.015% by weight. have. 상기 목적을 달성하기 위한 본 발명은 전회조업한 총슬래그중 25-35%를 남긴 전장입량 1톤에 대하여 경소백운석 8-15kg을 투입하여 노체를 3-4회 반복경동시켜 노벽에 슬래그를 코팅한후, 생석회 8-15kg을 노내 투입한 다음, 고철 및 탈린용선을 장입한 후, 순산소를 송산하여 취련시킴과 동시에 착화되면 생석회 및 소결광을 3-10kg를 각각 일괄투입하고, 취련 30-70%에는 전장입량 1톤에 대하여 생석회 및 경소백운석을 각각 1-3kg씩 분할투입하고, 소결광은 열원이 허용하는 범위내의 양을 연동투입하며, 취련 80-85%시점에는 생석회, 경소백운석 및 소결광 중에서 선택된 1종 이상을 각각 1-3kg/톤 투입하는 것을 특징으로 하는 탈린용선을 이용한 극저린강의 전로 정련방법에 관한 것을 그 요지로 한다. In order to achieve the above object, the present invention is made by injecting 8-15 kg of light and small dolomite for 1 ton of the total amount of slag, which was left 25-35% of the total slag, which was slaked on the furnace wall 3-4 times. Then, 8-15kg of quicklime is added into the furnace, and then charged with scrap iron and delineated molten iron, and after pure oxygen is blown, and when complexed, 3-10kg of quicklime and sintered ore are put in a batch, and blown 30-70%. In the case of 1 ton of full charge, 1 ~ 3kg of quicklime and light small dolomite are divided into each, and the sintered ore is interlocked with the amount within the range allowed by the heat ...

Procedure for melting steel in oxygen converter

Изобретение относится к области металлургии, в частности к способу выплавки стали в кислородном конвертере. Способ включает подачу в кислородный конвертер в качестве металлошихты жидкого чугуна и металлолома, шлакообразующих материалов в виде извести, ожелезненного и сырого доломита, последующую продувку металла кислородом сверху через погружную фурму с изменением расхода кислорода и положения фурмы над уровнем расплава в спокойном состоянии. Одновременно с продувкой кислородом в расплав дополнительно вводят порциями сырую сидеритовую руду с интервалом от 1 до 1,5 минут в количестве 1,0-1,5% от суммы расхода металлошихты при соотношении сырой сидеритовой руды к количеству металлолома в шихте 0,08:1-0,16:1. Кроме того, используют сырую сидеритовую руду класса крупности 20-60 мм и с содержанием железа не менее 25% и оксида магния не менее 9%. Заявляемый способ позволяет повысить качество выплавляемой стали и увеличить выход годного металла. 2 з.п. ф-лы, 2 табл., 1 пр. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 608 008 C1 (51) МПК C21C 5/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015157424, 31.12.2015 (24) Дата начала отсчета срока действия патента: 31.12.2015 Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 31.12.2015 (45) Опубликовано: 11.01.2017 Бюл. № 2 (56) Список документов, цитированных в отчете о поиске: RU 2386703 C1, 20.04.2010. RU 2353662 C2, 27.04.2009. RU 2465337 C1, 27.10.2012. CN 1552919 A, 08.12.2004. 2 6 0 8 0 0 8 R U (57) Формула изобретения 1. Способ выплавки стали в кислородном конвертере, включающий подачу в кислородный конвертер в качестве металлошихты жидкого чугуна и металлолома, шлакообразующих материалов в виде извести, ожелезненного и сырого доломита и последующую продувку металла кислородом сверху через погружную фурму с изменением расхода кислорода и положения фурмы над уровнем расплава в спокойном состоянии, отличающийся тем, что ...

Low-cost manufacturing method of deformed steel bar

本发明公开一种螺纹钢的低成本制造方法，所述炼钢工艺的步骤包括：高炉熔铁→转炉冶炼→吹氩→LF炉精炼→RH真空处理→连铸，转炉冶炼步骤之后喂入预先制备的含钛复合包芯线代替部分钒氮合金进行微合金化处理；本发明提供的技术方案，通过转炉冶炼出钢过程中，喂入预先制备的含钛复合包芯线代替部分钒氮合金进行微合金化处理，并经过出钢控氧、深脱氧渣洗、喂线前控氧、喂线前控温、以及喂线吹氮的处理工艺，对金属钛进行氮化处理，以提高钢水中氮化钛的回收率，以利于氮化钛的固化，促进了铁素体晶粒的形核，以保证螺纹钢的强度性能，降低钒氮合金用量，从而降低合金化成本，实现了螺纹钢低成本的稳定可持续生产。

Method for manufacturing ultra low phosphorus steel using steel making slag

A method for manufacturing ultra low phosphorus steel using converter slag is provided to reduce the consumption of quicklime and produce ultra low phosphorus steel with high quality by recycling slag generated in the converter process. A method for manufacturing ultra low phosphorus steel comprising not higher than 120 ppm(parts per million) of phosphorous using converter slag comprises: a slag coating step of coating refractories of a converter with slag remained in the previous process; an iron scrap and hot metal injecting step of charging iron scrap and hot metal into the converter; a first blowing step of dephosphorizing the hot metal such that the content of phosphorous contained in the hot metal that has been charged into the converter is controlled to not higher than 500 ppm; a first slag discharging step of intermediately discharging slag comprising at least 3.5% of P2O5; a second blowing step of decarburizing the hot metal to remove carbon contained in the hot metal; a ferroalloy injecting step of discharging the molten steel that has been dephosphorized and decarburized into a ladle and injecting ferroalloy into the ladle at the same time; and a second slag discharging step of discharging molten steel from the converter and discharging slag from the converter in a state that a portion of the slag is remained in the converter.

Procedure for melting rail steel in oxygen converter

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy, particularly to a method for melting rail steel from phosphorus iron in oxygen converter. Method involves application of scull and leaving slag of preceding melting residues, pouring phosphorus cast iron, melt blowing with oxygen at variable position of tuyere, addition of loose materials and slag removal. Blowing is performed in three period till carbon content in metal 0.3…0.6 %, with three slag download at 5…6, 13…14 and 17…18 minute of blowing. At the beginning of each period the tuyere is located at the distance 2,500…3,000 mm from the metal bath surface level in converter with step-by-step lowering down to 1,000…1,200 mm at the end of period. Loose materials is added in portions during the first 5…6 minutes of blowing at each period, after that, short-term re-blowing is made with duration 30…90 seconds for metal temperature increase up to 1,640…1,650 °C. Tuyere is lowered with a step of 200…250 mm, while the number of lowering steps equals to 6…8. EFFECT: invention provides production of high-quality rail steel with high carbon content, low oxidation level and low content of phosphorus. 6 cl, 1 tbl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C21C 5/28 (13) 2 586 948 C1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2015108085/02, 06.03.2015 (24) Дата начала отсчета срока действия патента: 06.03.2015 (45) Опубликовано: 10.06.2016 Бюл. № 16 2 5 8 6 9 4 8 R U (54) СПОСОБ ВЫПЛАВКИ РЕЛЬСОВОЙ СТАЛИ В КИСЛОРОДНОМ КОНВЕРТЕРЕ (57) Реферат: Изобретение относится к металлургии, в металлической ванны в конвертере с пошаговым частности к способу выплавки рельсовой стали опусканием фурмы до 1000…1200 мм в конце из фосфористого чугуна в кислородном периода. Сыпучие материалы присаживают конвертере. Способ включает нанесение порциями в течение первых 5…6 минут продувки гарнисажа и оставление в конвертере остатков каждого периода, после чего ...

Direct method for alloying steel with complex of elements

Изобретение относится к области черной металлургии. Способ прямого легирования стали комплексом элементов включает выплавку металла в сталеплавильном агрегате, подачу оксидного материала, содержащего оксиды марганца, и дополнительную подачу на поверхность жидкого металла материала, содержащего соединения других легирующих элементов, с равномерным распределением их и оксидного материала, содержащего оксиды марганца, по поверхности жидкого металла, восстановление легирующих элементов путем ввода восстановителя в процессе подачи оксидного материала, содержащего оксиды марганца, и материала, содержащего соединения других легирующих элементов. Ввод восстановителя при достижении высоты слоя подаваемых легирующих материалов, равной 0,1-0,15 общей высоты слоя, на границу раздела металлической и шлаковой фаз. Восстановление легирующих элементов ведут при температуре плавления смеси оксидного материала, содержащего оксиды марганца, и материала, содержащего соединения других легирующих элементов, обеспечивая постоянный контакт расплавленной части восстановителя с гомогенной составляющей плавящихся легирующих материалов в течение всего процесса восстановления. Восстановитель вводят в количестве, обеспечивающем термичность смеси подаваемых легирующих материалов. Подачу оксидного материала, содержащего оксиды марганца, и материала, содержащего соединения других легирующих элементов, осуществляют рассредоточенно или порционно, с расходом порции не менее 0,1 от общего их расхода. В качестве восстановителя можно использовать алюминийсодержащий, кремнийсодержащий, углеродсодержащий материал, или группу щелочноземельных металлов, или их сочетания. Технический результат - обеспечение высокой степени усвоения металлом легирующих элементов и снижение загрязненности стали неметаллическими включениями. 3 з.п. ф-лы. 699$ сс ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ "” 2 231 559 ^^ С1 5 МК’ С 21С 5/28, 7/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), ...

A kind of pneumatic steelmaking exothermic mixture and preparation method thereof

本发明公开了一种转炉炼钢用发热剂及其方法，包括工业硅粉、废轮胎胶粉以及粘结剂；其中，所述的工业硅粉所占重量百分比为10％～30％，所述的废轮胎胶粉所占重量百分比60％～80％，粘结剂所占重量百分比为5％～15％。本发明的技术效果在于，转炉炼钢用发热剂所用主要原料均为工业生产中产生的对环境影响极大的废弃物。其中工业硅粉为光伏产业所产生的不可回收利用的废弃物，废轮胎胶粉为城市垃圾。工业硅粉与废轮胎胶粉均为高发热量物质。上述原料经合理的配比压球后，不仅其发热效果优于现有现有同类发热剂，且找到了一种废弃物资源综合利用的方法。

Oxygen steel making process using iron manganese ore as mn source

Hot metal refining method

２基の転炉型精錬炉を用い、一方を溶銑の予備処理精錬炉、他方を溶銑の脱炭精錬炉として使用して溶銑から溶鋼を溶製するにあたり、前記２つの精錬炉の生産性を損なうことなく、脱炭精錬炉で発生する溶融スラグを高温状態のまま予備処理精錬炉での精錬剤として利用する。少なくとも２基の転炉型精錬炉を用い、一方を溶銑の予備処理精錬炉１４として使用し、他方を前記予備処理精錬炉で予備処理された溶銑２の脱炭精錬炉３として使用し、溶銑から溶鋼を溶製する精錬方法であって、前記脱炭精錬炉での脱炭精錬によって得られた溶鋼５を取鍋７に出湯した後、脱炭精錬炉内に残ったスラグ９を、積層された鉄スクラップ上から溶融状態のまま流下させて、前記スラグの少なくとも一部を凝固させ、その後、予備処理精錬炉における溶銑の予備処理で、少なくとも一部が凝固したスラグを前記鉄スクラップとともに高温のまま使用する。 When using two converter-type smelting furnaces, one as a hot metal pretreatment smelting furnace and the other as a hot metal decarburizing smelting furnace, the productivity of the two smelting furnaces is increased. The molten slag generated in the decarburization refining furnace is used as a refining agent in the pretreatment refining furnace in a high temperature state without damaging. Using at least two converter-type smelting furnaces, one is used as a hot metal pretreatment smelting furnace 14, and the other is used as a decarburization smelting furnace 3 for hot metal 2 pretreated in the pretreatment smelting furnace, The molten steel 5 is smelted from the decarburizing and refining furnace, after the molten steel 5 obtained by decarburizing and refining in the decarburizing and refining furnace is poured into the ladle 7, and the slag 9 remaining in the decarburizing and refining furnace is laminated. The molten slag is allowed to flow in a molten state from above the iron scrap so that at least a part of the slag is solidified, and then at least a part of the slag solidified in the pretreatment refining furnace is heated together with the iron scrap at a high temperature. Use as is.

Method of direct steel making from iron-containing materials in converter

FIELD: metallurgy. SUBSTANCE: method includes recarburizing of partially left metal melt of previous heat and portion loading into converter of mixture of iron-containing materials, carbon-containing and slag-forming materials. Content of carbon-containing materials in mixture amounts to 25-50% of iron-containing material in mixture, and weight of each portion amounts to 10-40% of molten metal weight in converter which is formed by melting after loading of previous portion. Carried out simultaneously with loading is blowing of melt with mixture of nitrogen and oxygen with their ratio of (4-1):1. Slag is periodically removed when iron oxides content in slag achieves 5-305 and loaded materials are assimilated. Then, metal melt is blown with oxygen with simultaneous introduction of slag-forming materials. The amount of metal left in converter makes up 10-30% of melt weight before its tapping. Iron-containing materials are used in the form of scale, iron ore, sinter, dust, slimes and slags of steel melting units in fraction sizing less than 1 mm. Carbon-containing material is used in fractions sizing less than 6 mm. EFFECT: reduced specific consumption of used materials due to decreased losses of metal and more rational organization of the process. 5 cl, 2 tbl СДУ ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ "” 2415 743 ' 13) Сл С 21 В 13/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 97118338102, 13.11.1997 (46) Дата публикации: 20.07.1998 (56) Ссылки: Ц5, 4957546, А, 1990. (71) Заявитель: Акционерное общество "Кузнецкий металлургический комбинат" (72) Изобретатель: Николаев А.Л., Николаев А.А., Абрамович С.М., Браунштейн Е.Р., Бердышев В.А., Лебедев В.И., Григоркин Е.Г., Потешкин Е.Г., Стариков В.В., Хаустов А.Г. (73) Патентообладатель: Акционерное общество "Кузнецкий металлургический комбинат" (54) СПОСОБ ПРЯМОГО ПОЛУЧЕНИЯ СТАЛИ ИЗ ЖЕЛЕЗОСОДЕРЖАЩИХ МАТЕРИАЛОВ В КОНВЕРТЕРЕ (57) Реферат: Сущность: способе ...

Production of expanded slag on melt of stainless steel at converter

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy, particularly, to production of stainless steel at converter. Proposed method comprises introduction of foaming material in between the layer of slag formed due to oxidative refining in converter and fused metal composed by metal oxide or metal carrier, carbon and binder as granules or pellets. During foaming agent introduction, quantity of granules or pellets is adjusted in the range of 2-30 kg per ton a minute to ensure the preset height of foamed slag. Said height is maintained during the preset definite time. Added foaming agent is distributed layer-by-layer at the rate of 1-5 kg/m 2 /min per unit surface. EFFECT: perfected casting power balance. 4 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C21C 5/28 (13) 2 518 837 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012135467/02, 05.01.2011 (24) Дата начала отсчета срока действия патента: 05.01.2011 (72) Автор(ы): РАЙХЕЛЬ,Йоханн (DE), РОЗЕ,Лутц (DE) (73) Патентообладатель(и): СМС ЗИМАГ АГ (DE) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.02.2014 Бюл. № 6 R U 19.01.2010 DE 102010004983.2 (45) Опубликовано: 10.06.2014 Бюл. № 16 102008032975 A1, 14.01.2010. RU 2010864 C1, 15.04.1994. RU 2288278 C1, 27.11.2006. RU 2241046 C2, 27.11.2004 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 20.08.2012 2 5 1 8 8 3 7 (56) Список документов, цитированных в отчете о поиске: DE 102007006529 A1, 14.08.2008. DE 2 5 1 8 8 3 7 R U EP 2011/050079 (05.01.2011) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2011/089027 (28.07.2011) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. С.Р.Абубакирову, рег.N 931 (54) СПОСОБ ПОЛУЧЕНИЯ ВСПЕНЕННОГО ШЛАКА НА РАСПЛАВЕ НЕРЖАВЕЮЩЕГО МЕТАЛЛА В КОНВЕРТЕРЕ (57) Реферат: Изобретение относится к области брикетов в диапазоне между 2-30 кг ...

A method of reducing the converter smelting period

本发明涉及一种降低转炉冶炼周期的方法，属于转炉炼钢技术领域。该方法包括如下步骤：将铁水、半钢和废钢同时混合于转炉中，吹炼并加入第一造渣材料，出钢前加入添加剂，脱氧合金化，出钢后溅渣。铁水、废钢和半钢的重量比为10‑15：1‑3：80‑90。第一造渣包括重量比为4‑5：0.8‑1.2：0.2‑0.4：1‑1.5的石灰、轻烧镁球、萤石以及复合渣。添加剂包括碳化硅。该方法简单，易操作，能有效降低转炉炼钢周期，提高生产效益。

Method of making smelted steel

Agent for dephosphorization and treatment method of molten metal using the same

본 발명은 용철 처리장치 및 방법에 관한 것으로서, 용철을 처리하는 방법으로서, Mg 제련 슬래그를 포함하는 탈린재를 마련하는 과정; 상기 탈린재를 용기에 투입하는 과정; 상기 용기에 용철을 장입하는 과정; 및 상기 용기에 산소를 취입하는 과정;을 포함하는 것을 특징으로 하고, 용선, 용강 등과 같은 용철 중에 함유된 인(P) 성분을 신속하게 제거할 수 있다.

Production method of heavy rail steel for guard rail

本发明一种护轮轨用重轨钢的生产方法，在LF精炼操作时加入渣料造二元碱度3.0～5.0的高碱度白渣进行精炼；待钢水硫含量≤0.012wt%时，加入调渣剂进行调渣处理，控制炉渣碱度为1.5～2.0；加入钛铁使钢水中钛含量控制在0.015wt%～0.025wt%；之后软吹出站上钢；铸坯缓冷步骤采用夹钳下线入缓冷坑缓冷处理，铸坯入坑温度不低于700℃，出坑温度不高于150℃，提供铸坯中氢扩散的良好热力学条件。本发明省去了现有技术中RH或VD精炼步骤，简化了护轮轨用重轨钢的生产工艺流程，降低了生产成本；使铸坯内部各类夹杂物有效控制在≤2.0级，有效降低铸坯内部中心偏析和疏松缺陷，完全满足护轮轨质量要求。

Converter steelmaking method and device for dynamically adjusting scrap steel loading based on molten iron conditions

本发明提供了一种基于铁水条件动态调整废钢装入量的转炉炼钢方法和装置，废钢采用顶底复加两种方式，底部通过废钢料槽加入，顶部通过炉顶废钢料仓加入。所述方法首先获取铁水信息，基于废钢加入量计算模型，计算当前炉次的最大废钢装入量，若废钢料槽加入的废钢量＜计算的最大废钢装入量，启用炉顶废钢料仓；若废钢料槽加入的废钢量≥计算的最大废钢装入量，则不启用炉顶炉顶料仓。本发明针对实际生产中铁水成分波动剧烈以及废钢装入量难以对应调节的弊端，可实现转炉热效率的高效利用，不仅能在一定程度上合理控温，还可以减少物料消耗，提高产量，缩短冶炼周期，具备良好的冶金效果。

METHOD FOR PRODUCING FOAMED SLAG ON MELT OF STAINLESS METAL IN THE CONVERTER

1. Способ получения вспененного шлака на расплаве нержавеющей стали в AOD (аргоно-кислородное обезуглероживание)- или MRP (процесс металлургического рафинирования)-конвертере, и, соответственно, процессе CONARC SSt для нержавеющей стали, путем добавления вспенивающего материала, причем предварительно заданная смесь (5) из оксида металла, носителя железа, углерода и связующего материала в форме гранул или, соответственно, брикетов (4) вносится в конвертер, и под слоем (2) шлака вследствие высокой температуры окружающей среды реагирует с химическим восстановлением,отличающийся тем, чтогазообразный монооксид углерода, образующийся в процессе восстановления оксида металла углеродом внутри гранул или, соответственно, брикетов (4), своими газовыми пузырьками (7) вызывает вспенивание шлака,причем добавление вспенивающего материала при специальном регулировании на значения между 2-30 кг гранул или, соответственно, брикетов (4) на тонну расплавленного металла (1) в минуту выполняют так, чтобы получалась определенная высота слоя вспененного шлака, и она поддерживалась в течение заранее определенного времени,причем распределение добавляемого вспенивающего материала производится послойно и с охватом площади при определенной поверхностной плотности, которая для оптимального эффекта вспенивания составляет между 1-5 кг/м/мин.2. Способ по п.1, отличающийся тем, что для достижения необходимой для целевого вспенивания шлака определенной вязкости шлака проводят соответствующее управление шлаком.3. Способ по п.1 или 2, отличающийся тем, что в определенной смеси (5) гранул или, соответственно, брикетов в качестве оксида металла или, соответ РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C21C 5/28 (13) 2012 135 467 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2012135467/02, 05.01.2011 (71) Заявитель(и): СМС ЗИМАГ АГ (DE) Приоритет(ы): (30) Конвенционный приоритет: 19.01.2010 DE 102010004983.2 (85) Дата начала рассмотрения заявки ...

Method of melting metal in converter

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy, particularly, to metal melting in converter. Method includes charging scrap, casting iron, blowing metal melt with oxygen, adding magnesium-containing slag-forming materials during blowing process, blowing slag left in converter after discharge of metal therefrom with nitrogen. Prior to blowing molten metal with oxygen, method includes determining amount of magnesium-containing slag-forming materials deposited during blowing based on predicted data on composition of slag before outlet of melt and value of slag corrosion of converter lining. Molten metal is then blown with oxygen, in direction of which is added magnesium-containing slag-forming materials. Metal is tapped from converter and before blowing slag left in converter with nitrogen, magnesium- and carbon-containing materials are deposited thereon in an amount of 1-3.0 and 0.3-1.0 t respectively. Magnesium- and carbon-containing materials used are dried dolomite and coke. Slag is blown with nitrogen for 1-8 minutes. EFFECT: decreased consumption of magnesium-containing slag-forming materials. 3 cl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C21C 5/28 (13) 2 603 759 C1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2015129171/02, 16.07.2015 (24) Дата начала отсчета срока действия патента: 16.07.2015 (45) Опубликовано: 27.11.2016 Бюл. № 33 (73) Патентообладатель(и): Публичное акционерное общество "Северсталь" (ПАО "Северсталь") (RU) 2 6 0 3 7 5 9 R U (54) СПОСОБ ВЫПЛАВКИ МЕТАЛЛА В КОНВЕРТЕРЕ (57) Реферат: Изобретение относится к области расплава металла кислородом, по ходу которой металлургии, в частности к выплавке металла в осуществляют присадку магнийсодержащих конвертере. Способ включает завалку лома, шлакообразующих материалов. Осуществляют заливку чугуна, продувку расплава металла слив металла из конвертера и перед началом кислородом, присадку магнийсодержащих раздува ...

Briquettes for heating furnace and manufacturing method thereof

본 발명의 일 관점에 따른 전로 승온용 브리켓의 제조방법은, 제강 공정에서 용탕의 온도를 높이기 위하여 사용되는 승온용 브리켓의 제조방법에 있어서, 실리콘 카바이드(SiC) 분말과, 생석회(CaO), 실리콘옥사이드(SiO 2 ) 및 알루미나(Al 2 O 3 )를 포함하는 래들 슬래그 분말을 1:1.5~2의 중량비로 혼합하여 브리켓을 제조한다. According to one aspect of the present invention, a method for manufacturing a converter heating briquette includes a silicon carbide (SiC) powder, quicklime (CaO), and silicon in a method for manufacturing a temperature raising briquette used to increase the temperature of a molten metal in a steelmaking process. A ladle slag powder including oxide (SiO 2 ) and alumina (Al 2 O 3 ) is mixed at a weight ratio of 1: 1.5 to 2 to prepare a briquette.

Method for afterburning active burnable gases and a device to implement it

FIELD: metallurgy. SUBSTANCE: method for afterburning active burnable gases comprises feed at least one hollow swirl jet of oxidizing gas in the direction of bath surface. Degree of jet swirling within 0.1 to 0.5 is set as to its tangential and axial speed for effective afterburning gases generated over the bath and feeding thermal energy generated by the gases to the bath. The jet is fed to the bath surface at 10 to 90 ° angle. Oxidizing gases may be fed in the form of preheated round jet. Oxygen, air or mixtures of inert gas, CO 2 , H 2 O vapors and O 2 are used as oxidizing gases. A mean to select swirling degree in the device to implement the method is made in the form of member installed inside annular nozzle of an oxygen lance. The member is moved inside nozzle to feed oxidant. Diameter of member is twice as large as that for width of nozzle ring set at angle of 100 to 180 ° to axis of body directed to bath surface. EFFECT: effective afterburning. 10 cl, 5 dwg 9679 0с ПЧ Го (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ “” 2025 496 ' (51) МПК 13) СЛ С 21В 13/00, С 21С 5/48 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 4613390/02, 10.02.1989 (30) Приоритет: 12.02.1988 АЦ Р1 6741; Р1 6745; Р1 9558 (46) Дата публикации: 30.12.1994 (56) Ссылки: 1. Авторское свидетельство СССР М 1500166, кл. С 21В 1300, 1987.2. Авторское свидетельство СССР М 1439129, кл. С 21С 5/48, 1987. (71) Заявитель: Клекнер Кра Патент ГмбХ (0Е) (72) Изобретатель: Грегори Джон Харди[АЦ], Джон Микаэль Ганзер[АЦ] (73) Патентообладатель: Клекнер Кра Патент ГмбХ (0Е) (54) СПОСОБ ДОЖИГАНИЯ АКТИВНЫХ ГОРЮЧИХ ГАЗОВ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ (57) Реферат: Использование: в области металлургии при дожигании активных горючих газов, образующихся из реагентов, вводимых в жидкую ванну железа и окислов железа. Сущность изобретения: способ дожигания активных горючих газов включает подачу по крайней мере одной полой завихренной струей —окислительных газов /ОГ/ в ...

A kind of converter smelting process of 82B steel

本发明公开了一种82B钢的转炉冶炼工艺，属于钢冶炼技术领域，包括兑入高炉铁水、转炉底吹氩气、过程加料、终点加料步骤。本技术方案通过采用单渣操作，冶炼82B高碳钢，使转炉冶炼终点钢水的C含量较高和P含量得到控制，克服了初期渣中的磷随着炉温上升而又回到钢水中导致前功尽弃的问题；同时，初期渣中含有大量的金属铁，单渣操作不倒初期渣，一渣到底，大大减少了金属铁的浪费，也减少了对造渣材料的消耗，从而降低了冶炼成本，提高了冶炼质量。

A kind of production method of guard rail Properties of Heavy Rail Steel

本发明一种护轮轨用重轨钢的生产方法，在LF精炼操作时加入渣料造二元碱度3.0～5.0的高碱度白渣进行精炼；待钢水硫含量≤0.012wt%时，加入调渣剂进行调渣处理，控制炉渣碱度为1.5～2.0；加入钛铁使钢水中钛含量控制在0.015wt%～0.025wt%；之后软吹出站上钢；铸坯缓冷步骤采用夹钳下线入缓冷坑缓冷处理，铸坯入坑温度不低于700℃，出坑温度不高于150℃，提供铸坯中氢扩散的良好热力学条件。本发明省去了现有技术中RH或VD精炼步骤，简化了护轮轨用重轨钢的生产工艺流程，降低了生产成本；使铸坯内部各类夹杂物有效控制在≤2.0级，有效降低铸坯内部中心偏析和疏松缺陷，完全满足护轮轨质量要求。

The straight upper manufacturing process of Aluminum steel is smelted in a kind of calcium carbide cooperation aluminum steel deoxidation

本发明公开了一种电石配合铝线脱氧冶炼含铝钢的直上制造工艺，⑴入炉铁水中的S含量≤O.010%；⑵控制下渣量<2kg/t钢；⑶出钢过程采用电石脱氧，确保开始出钢30秒内加入电石，按40kg电石平衡钢水中O.010%重量百分比氧的量加入电石，即：电石加入量=终点氧含量×0.4，出钢渣料顺序：出钢开始→电石→出钢30秒加钢包石灰→出钢至1/3加合金→出钢结束；⑷炉后脱氧：出钢结束开至吹氩站，先进行定氧，钢水氧控制在30‑50ppm，根据钢水氧含量喂入100‑200米铝线，喂线速度180m/min，喂线过程钢包底吹氩气流量控制在20m 3 /h；⑸喂完丝钢包成份铝含量控制在0.015‑0.030%；⑹进行软吹8‑10分钟；⑺温度、成份合适上连铸浇注。

Production method for increasing number of continuous casting furnaces of calcium-free processed cold forging steel

本发明一种提高无钙处理冷镦钢连续浇注炉数的生产方法，控制LF炉开始加热时精炼渣二元碱度为9.0～13.0；LF炉处理10～15分钟向精炼渣面均匀撒入硅铁粉造渣，硅铁粉加入量0.8～1.4kg/吨钢，控制精炼渣二元碱度在2.8～4.5；在LF炉处理5～15分钟时喂铝线将钢水铝含量控制在0.050%‑0.060%，控制钢水成品铝在0.015%‑0.030%，铝线喂入时间保证在硅铁粉加入前；LF炉炉渣终渣组分为CaO：48%～58%，SiO 2 ：13%～17%，Al 2 O 3 ：20%～30%，MgO：4%～8%。本发明避免在钢坯浇注过程中产生水口结瘤，实现了无钙处理钢水连续浇注15‑20炉。

Agent for dephosphorization and treatment method of molten metal using the same

본 발명은 용철 처리장치 및 방법에 관한 것으로서, 용철을 처리하는 방법으로서, Mg 제련 슬래그를 포함하는 탈린재를 마련하는 과정; 상기 탈린재를 용기에 투입하는 과정; 상기 용기에 용철을 장입하는 과정; 및 상기 용기에 산소를 취입하는 과정;을 포함하는 것을 특징으로 하고, 용선, 용강 등과 같은 용철 중에 함유된 인(P) 성분을 신속하게 제거할 수 있다. The present invention relates to a method and apparatus for processing molten iron, comprising the steps of: preparing a talline material containing Mg-smelting slag; Introducing the talline material into a container; Charging molten iron into the vessel; And a step of blowing oxygen into the vessel, wherein phosphorus (P) contained in molten iron such as molten iron, molten steel and the like can be quickly removed.

Method for Refining Return Molten Steel Mixed Molten Pig Iron in Converter

본 발명은 회송용강을 용선과 함께 전로 취련하는 방법에 있어서 경소백운석을 적절히 투입하는 회송용강배합용선을 전로취련하는 방법에 관한 것으로서, 회송용강을 전로에 재장입하여 정련할 때 인 성분 제어는 물론 내화물의 침식을 저감시킬 수 있는 정련방법을 제공하고자 하는데, 그 목적이 있는 것이다. The present invention relates to a method of scavenging a slewing steel mixture molten iron in which a light dolomite is appropriately injected in a method of smelting the slewing steel with the molten iron, as well as controlling phosphorus when re-loading the molten steel into the converter. It is to provide a refining method that can reduce the erosion of the refractory, which is the purpose. 본 발명은 경소백운석, 용선 및 회송용강을 전로에 장입하여 전로정련하는 방법에 있어서, 상기 전로에서의 인정련에 필요한 최소 CaO량을 구하고; 최소 CaO량을 공급하기 위한 경소백운석량을 구하고; 전로종점에서의 슬래그중 T.Fe 량을 구하고; 상기 슬래그중 T.Fe 량을 철산화물(FeO)량으로 변환하여 MgO포화용해도를 구하고; 상기 경소백운석의 량과 예측된 슬래그 성분으로부터 슬래그 발생량(Ws)을 구하고; The present invention is a method of refining the converter by charging the light dolomite, molten iron and the return molten steel in the converter, the minimum amount of CaO required for the refining in the converter; Obtaining a light dolomite amount to supply a minimum amount of CaO; Determine the amount of T.Fe in the slag at the converter end; MgO saturation solubility is obtained by converting the amount of T.Fe in the slag into the amount of iron oxide (FeO); Obtaining slag generation amount (Ws) from the amount of light dolomite and the predicted slag component; 상기 최소 경소백운석 투입량(gs_dol) 및 슬래그 발생량(Ws)을 이용하여 슬래그중 MgO의 농도를 구하고; 그리고 상기와 같이 구한 슬래그중 MgO의 농도와 MgO포화용해도를 비교하여 슬래그중 MgO의 농도가 MgO포화용해도 보다 큰 경우에는 상기에서 구한 경소백운석 량을 실제 투입량으로 결정하여 투입하는 회수용강배합용선의 전로취련방법을 그 요지로 한다. Determining the concentration of MgO in the slag using the minimum light dolomite dose (gs_dol) and slag generation amount (Ws); And comparing the concentration of MgO and MgO saturated solubility in the slag obtained as described above, if the concentration of MgO in the slag is higher than the MgO saturated solubility, the amount of light and small dolomite determined above is determined as the actual input amount, ...

Method and device for controlling turning plate of distribution trolley

本发明涉及一种布料小车翻板的控制方法和装置，属于炼钢自动化技术领域。本发明的技术方案是：使用倾角传感器安装在翻板转动轴上用来检测翻板旋转的角度，在PLC内部进行逻辑编程来控制翻板旋转，实现了四种翻板控制模式及翻板角度的一键标定功能，能够快速、直观的反映目标角度与实际角度的差值，同时能够根据两侧料仓料位高度值在线调节翻板角度，以使两侧料仓料位的高度保持一致。本发明的有益效果是：无需人工现场操作，大大提高了操作人员上料效率及上料自动化程度，降低了现场操作人员安全事故发生的概率，提高了生产质量。

A kind of converter tapping protection device and method

本发明提供了一种转炉出钢保护装置，包括滑板挡渣器(4)、转炉保护水口(5)；滑板挡渣器(4)中心处开有用于安装转炉出钢口(3)的安装通孔；滑板挡渣器(4)两侧分别设有一个滑道；转炉保护水口(5)上端的滑动板(511)安装于所述滑板挡渣器(4)的滑道内，可沿滑道往复滑动；转炉保护水口(5)下端伸入钢包(7)的钢液(9)内；滑动板(511)上开有与所述滑板挡渣器(4)的安装通孔直径相同的通孔。本发明在钢包与转炉出钢口之间形成一个密闭的出钢管道，改变以往裸露式的出钢方式，在有效降低出钢下渣与出钢温降的同时，既可以集中钢液流股提高对钢包内合金的有效搅拌，又可以隔绝钢液流股与空气的接触防止钢液吸气。

Production process for improving converter scrap ratio

本发明涉及一种提升转炉废钢比的生产工艺，属于冶金技术领域。包括如下步骤：上料，将废钢上料至高位废钢料仓；换热，将转炉高、中温段烟气余热进行换热并产生热风；预热，使用换热产生的热风对高位废钢料仓中的废钢进行预热；送料，高位废钢料仓中预热后的废钢在转炉吹炼过程中加入转炉。本发明充分利用了转炉的烟气余热，废钢在转炉冶炼过程中入炉，减轻转炉加废钢压力，同时减少废钢预热产生的污染，该工艺操作简单，有效提升了转炉的废钢比。

Steel melting method in converter with combined blowdown

FIELD: metallurgy. SUBSTANCE: invention relates to ferrous metallurgy, particularly, to steel making in converter with combined blowdown. Method comprises charging solid metal charge and pouring liquid iron, blowing metal with oxygen from above and nitrogen from below, feeding slag-forming and iron-containing materials into converter, at that, during melting, to the converter before the period of intensive decarburisation of metal, additionally magnesian flux is added in amount of 2–15 kg/t of steel containing, wt. %: magnesium oxide 40.0–70.0, silicon oxide 0.5–15.0, calcium oxide 1.0–15.0, iron oxide 0.1–5.0, loss on ignition 20.0–50.0, admixtures - balance. EFFECT: higher quality of steel due to reduced content of nitrogen and reduced wear of converter lining. 3 cl, 1 tbl, 4 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 729 692 C1 (51) МПК C21C 5/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21C 5/28 (2020.02) (21)(22) Заявка: 2019123266, 24.07.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 11.08.2020 (45) Опубликовано: 11.08.2020 Бюл. № 23 Адрес для переписки: 115093, Москва, ул. Павловская, 7, стр. 1, 5 этаж, ООО "РГХО", Филатову Александру Николаевичу 2 7 2 9 6 9 2 C 1 (56) Список документов, цитированных в отчете о поиске: SU 1560561 A1, 30.04.1990. RU 2459874 С1, 27.07.2012. RU 2327743 С2, 27.06.2008. KR 100992242 B1, 05.11.2010. JP 2004143492 A, 20.05.2004. (54) СПОСОБ ВЫПЛАВКИ СТАЛИ В КОНВЕРТЕРЕ С КОМБИНИРОВАННОЙ ПРОДУВКОЙ (57) Реферат: Изобретение относится к области черной дополнительно присаживают магнезиальный металлургии, в частности к выплавке стали в флюс в количестве 2-15 кг/т стали, содержащий, конвертере с комбинированной продувкой. мас.%: оксид магния 40,0-70,0, оксид кремния 0,5Способ включает завалку твердой металлошихты 15,0, оксид кальция 1,0-15,0, оксид железа 0,1-5,0, и заливку жидкого чугуна, продувку металла потери при прокаливании 20,0-50,0, примеси ...

METHOD FOR PRODUCING A CEMENT CLINKER AND INSTALLATION FOR THE PRODUCTION OF A CEMENT CLINKER

1. Способ производства цементного клинкера в установке, содержащей: ! циклонный подогреватель (3), предназначенный для предварительного нагрева сырья (2), ! реактор (4) предварительного обжига, оборудованный одной или несколькими горелками, который обеспечивает подачу тепла в циклонный подогреватель (3), ! вращающуюся печь (1), оборудованную горелкой, в которую подают топливо, при этом дымы из указанной печи (1) направляют в реактор (4) предварительного обжига и/или в циклонный подогреватель (3), ! охладитель (5) клинкера, в который нагнетают охлаждающий газ, на уровне выхода из указанной вращающейся печи (1), производящей горячий газ, ! в котором: ! сырье подогревают и из него удаляют углекислоту в указанном циклонном подогревателе (3) и/или в реакторе (4) предварительного обжига, ! в указанном клинкерном охладителе (5) охлаждают клинкер, выходящий из печи (1), ! в указанный реактор (4) предварительного обжига подают газ (9) с высоким содержанием кислорода, в котором содержание азота ниже 30% и который является единственным источником кислорода для указанного реактора (4), ! часть (8a) газов, выходящих из указанного циклонного подогревателя (3), рециркулируют в установку таким образом, чтобы получить соответствующий поток, необходимый для получения взвешенного состояния сырья в указанном подогревателе, тогда как другую часть (8b) с высоким содержанием диоксида углерода адаптируют с целью обработки, позволяющей ограничить выбросы диоксида углерода в атмосферу, в частности, такой как комплексообразование. ! 2. Способ по п.1, в котором часть (8a) газов (8), выходящих из указанного циклонного подогревателя (3), рециркулируют таким образом, чтоб РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2011 107 731 (13) A (51) МПК F27B 7/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): ФИВ ФСБ (FR) (21)(22) Заявка: 2011107731/02, 17.07.2009 Приоритет(ы): (30) Конвенционный приоритет: 01.08.2008 FR 08/04406 (85) Дата начала ...

Method for producing steel in converter

A method of making steel from solid ferrous metal charges in a converter which is provided both with means for blowing oxygen onto the top of the melt surface and with means for injecting carbonaceous fuels beneath the surface of the melt, consists in producing in the converter from between 10% - 30% more molten steel than is required for a desired quantity of steel which is to be tapped from the converter and then, following such tapping of the desired steel quantity, the surplus amount of molten steel which has been produced in the converter is drained into another, separate vessel which acts as an auxiliary or holding ladle, and is subsequently re-introduced into the converter after the preheating of the next solid ferrous metal charge.

Method for refining molten steel

본 발명은 용강의 정련방법에 관한 것으로, 전로에 용강을 재장입하는 과정과; 상기 용강에 탄소를 함유하는 첨가물을 투입하는 과정과; 상기 전로 내에 산소를 함유하는 가스를 취입하여 탈탄 반응을 일으키는 과정;을 포함하며, 상기 탈탄 반응이 일어나는 과정에서 상기 용강에 함유된 질소가 제거되고, 이를 통해 전로에 용강이 재장입되는 과정에서 질소가 픽업(pick up)되는 현상을 방지하는 동시에, 용강 중의 질소 농도도 감소시킬 수 있다. The present invention relates to a method for refining molten steel, comprising: recharging molten steel in a converter; Injecting an additive containing carbon into the molten steel; Blowing oxygen-containing gas into the converter to cause a decarburization reaction; wherein the nitrogen contained in the molten steel is removed in the course of the decarburization reaction, and the nitrogen in the process of recharging the molten steel into the converter. At the same time, the concentration of nitrogen in the molten steel can be reduced.

Method for accurately controlling addition amount of temperature regulator in TSC (thyristor switched capacitor) stage of large converter

本发明涉及一种大型转炉精确控制TSC阶段调温剂加入量的方法，属于冶金控制方法技术领域。本发明的技术方案是：冶炼计划下达后，进行调温剂控制系数的计算，根据热平衡模型指导下的BP神经网络计算计划生产炉次的调温剂加入量预测值，根据调温剂系数以及热平衡模型指导下的BP神经网络计算，最终得出调温剂加入量。本发明的有益效果是：构建转炉各影响因素间的内在联系，实现在不同物料条件下，预测大型转炉TSC阶段控制调温剂加入量，解决了大型转炉在物料种类、物料成分变化较大，操作人员工艺操作水平存在差异的不稳定条件下，TSC阶段温度控制问题，减少质量事故和生产事故，降低冶炼成本。

Process for feeding heat energy into a molten metal bath

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Method of producing ferroalloy

FIELD: metallurgy; may be used in production of ferroalloys. SUBSTANCE: method includes charging of materials containing alloying metal and flux to depth of melt based on iron or on its derivatives. Carbon-containing material is introduced at regulated rate to bath and/or to gas space above bath. Oxidizing gas is supplied at regulated rate to surface and/or below the surface of melt. Oxygen-containing gas is supplied to gas space above melt bath with regulated rate. Heat of final combustion of combustible gases is used by its transfer to melt bath. Regulated also are oxidizing-reducing potential, reducing treatment of slag, discharge of melt of ferroalloy reduced from metal phase or from slag phase and slag. EFFECT: reduced power consumption; no using of electric energy due to using chemical energy and physical heat of gaseous products of reaction of smelting unit. 18 cl СУСС ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ” 2 125 112 ' 13) СЛ М С 22 С 33/04 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 5010603102, 30.05.1990 (30) Приоритет: 02.06.1989 АЦ Р.} 4546 (46) Дата публикации: 20.01.1999 (56) Ссылки: 4$ 45655174 А, 20.01.86. 4Р 58-117852 А, 13.07.83. УР 59-107011 А, 21.06.84. АЦ 561686 А, 28.03.87. Гасик М.И. и др. Теория и технология производства ферросплавов. - М.: Металлургия, 1988, с. 367-3715. (85) Дата перевода заявки РСТ на национальную фазу: 29.11.91 (87) Публикация РСТ: \/О/90 15165 (13.12.90) (98) Адрес для переписки: 103735 Москва, ул.Ильинка 5/2, ОПП "Союзпатент" Патентному поверенному Дудушкину СВ. (71) Заявитель: Си-Ар-Эй Сервисиз Лимитед (АЦ) (72) Изобретатель: Робин Джон Баттерхем (АЦ), Родерик Макферсон Грант (АЦ), Джеймс Винсент Хэпп (АЦ), Гленн Эшли Тил (АЦ) (73) Патентообладатель: Си-Ар-Эй Сервисиз Лимитед (АЦ) С1 (54) СПОСОБ ПРОИЗВОДСТВА ФЕРРОСПЛАВА (57) Реферат: Изобретение относится к металлургии и может быть использовано в ферросплавном производстве. Согласно способу вглубь ванны расплава ...

Apparatus for tapping molten steel using vacumm and tapping control method using thereof

According to an embodiment of the present invention, a tapping apparatus using vacuum comprises: a sealed chamber which seals up a molten metal outlet formed on a lower portion of the side of a furnace body, accommodates molten metal flowing in through the molten metal outlet, and is configured to adjust an internal pressure thereof; a first tapping port provided in the sealed chamber, has a linear shape to penetrate the lower portion of the sealed chamber to protrude at a predetermined height from the lower portion of the furnace body, and discharges the molten metal flowing into the sealed chamber through the molten metal outlet to the outside; and a pressure adjustment unit which keeps the inside of the sealed chamber in a vacuum state at the time of tapping molten metal such that the height of the molten metal flowing into the sealed chamber is equal to or greater than the protruding height of the first tapping port, thereby discharging the molten metal to the outside through the first tapping port.

An apparatus for manufacturing a molten iron directly using fine or lump coals and fine iron ores, the method thereof, the integrated steel mill using the same and the method thereof

본 발명은 분상 또는 괴상의 일반탄 및 분상의 철함유 광석을 직접 사용한 용철제조장치 및 그 용철제조방법과 이를 이용한 일관제철장치 및 그 일관제철방법에 관한 것이다. 이를 위하여 본 발명에 따른 용철제조방법은, 분상의 철함유 광석 및 부원료를 혼합 및 건조하여 철함유 혼합체를 제조하는 단계, 철함유 혼합체를 순차적으로 연결된 다단의 유동환원로를 통과시키면서 환원 및 소성하여 환원체로 변환하는 단계, 환원체를 고온 괴성화하여 괴성체를 제조하는 단계, 괴성체를 용융시킬 열원으로서 괴탄과 분상의 일반탄을 괴성화한 성형탄을 용융가스화로에 장입하여 석탄충전층을 형성하는 단계, 다단의 유동환원로와 연결된 용융가스화로에 괴성체를 장입하고, 용융가스화로에 산소를 취입하여 용철을 제조하는 단계, 및 용융가스화로에서 배출되는 환원용 석탄가스를 유동환원로에 공급하는 단계를 포함한다. The present invention relates to an apparatus for manufacturing molten iron using powdered or bulky ordinary coal and powdered iron ore directly, a method for manufacturing molten iron thereof, an integrated iron manufacturing apparatus using the same, and an integrated iron manufacturing method thereof. To this end, the method for manufacturing molten iron according to the present invention comprises the steps of preparing and mixing iron powder ore and secondary raw materials to produce an iron-containing mixture, and reducing and calcining the iron-containing mixture while passing through a multi-stage flow reduction reactor. Converting to a reducing body, forming a compacted body by high temperature compacting the reduced body, and charging coal briquettes of compacted coal and powdered ordinary coal as a heat source for melting the compacted material into a molten gasifier to form a coal-filled layer. In the step, the compacted material is charged into a melt gasifier connected to a multi-stage flow reduction reactor, the molten gas is blown into oxygen to produce molten iron, and the reducing coal gas discharged from the melt gasifier is transferred to the fluidized reactor. Supplying. 용철제조방법, 용철제조장치, 일관제철장치, 일관제철방법 Molten iron manufacturing method, molten iron manufacturing equipment, integrated iron making equipment, integrated iron making method

Method of operating converter

본 발명은 전로 조업 방법에 관한 것으로서, 복수의 합금철을 마련하는 과정; 용강의 강종에 따라 조정이 필요한 합금 원소의 함량과 불순물의 함량을 설정하는 과정; 설정된 합금 원소의 함량에 따라 상기 복수의 합금철의 투입량을 각각 산출하는 과정; 설정된 불순물의 함량에 대하여, 복수의 합금철로부터 예비 투입대상을 선정하는 과정; 및 상기 예비 투입대상으로 선정된 합금철 중 원가가 낮은 합금철을 투입대상으로 선정하는 과정;을 포함하고, 전로 출강 시 투입되는 합금철을 선정할 때 합금철 투입 후 용강이 가지는 불순물의 함량과, 합금철 투입에 소요되는 비용을 고려하여 합금철을 선정함으로써 용강의 품질을 향상시키는 동시에 용강의 제조 비용을 절감할 수 있다. The present invention relates to a converter operation method, the process of providing a plurality of alloy iron; The process of setting the content of the alloy element and the content of impurities that need to be adjusted according to the steel type of the molten steel; Calculating the input amounts of the plurality of ferroalloys according to the content of the set alloy elements, respectively; Selecting a pre-injection target from a plurality of ferroalloys with respect to the set content of impurities; And a process of selecting an alloy iron having a low cost among the alloy irons selected as the preliminary injection targets as an input target. , By selecting the alloy iron in consideration of the cost required for the input of the alloy iron, it is possible to improve the quality of the molten steel and reduce the manufacturing cost of the molten steel.

Method for delivery of thermal energy to iron or alloy melt and container for carrying out same

Использование: в черной металлургии, в способах подвода тепловой энергии в расплав железа или сплава. Сущность изобретени : в расплав железа или сплава подают загруженный в выполненные из стального листа газопроницаемые контейнеры углерод , сверху загружают твердую металло- шихту, преимущественно стальной скрап, который удерживает контейнеры под уровнем расплава. Затем продувают расплав кислородом. Контейнеры с углеродом и твердую металлошихту предварительно нагревают отход щими из металлургической емкости газами, содержащими СО, которые дожигают перед подачей в подогреватель. Контейнер выполнен в виде трубообразно- го элемента с концами, закрытыми газопроницаемым материалом. 2 с. и 2 э. п. ф-лы, 2 ил.

Treatment of molten iron or molten steel

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Converter blowing method

PURPOSE: A converter blowing method is provided in which ladle slag and manganese ore are properly injected into molten steel to substitute for an existing flux of fluorite when manufacturing molten steel in converter. CONSTITUTION: In a converter blowing for refining hot metal into molten steel, the converter blowing method comprises the process of injecting a flux prepared by mixing 4 to 6 wt.% of ladle slag containing 30 to 50 wt.% of Al2O3 with 6 to 4 wt.% of manganese ore containing 40 to 60 wt.% of total manganese into converter, thereby improving fluidity of converter slag to promote slagmaking power and suppress oxidation loss of manganese contained in hot metal at the same time.

Method for preliminary chartering and control device for chartering

탈인 처리 후의 용선 중의 탄소 농도를 고정밀도로 추정하는 것. 전로를 사용한 용선 예비 처리에 있어서, 탈인 처리 전의 용선에 관한 용선 데이터, 그리고 탈인 처리 시에 상기 전로로부터 배출된 배출 가스 성분 및 배출 가스 유량을 포함하는 배출 가스 데이터를 취득하는 데이터 취득 스텝과, 상기 배출 가스 데이터에 기초하여 산출되는 탈인 처리 시의 탈탄량을, 상기 탈인 처리 시의 조업 요인에 기초하여 산출되는 보정값을 사용하여 보정하고, 보정된 탈탄량과 상기 용선 데이터에 기초하여 탈인 처리 후의 탄소 농도를 추정하는 탄소 농도 추정 스텝을 포함하는 용선 예비 처리 방법이 제공된다. Estimating the carbon concentration in molten iron after dephosphorization treatment with high precision. In a preliminary chartering process using a converter, a data acquisition step of acquiring charter data relating to the charter before the dephosphorization process and exhaust gas data including the exhaust gas component and the exhaust gas flow rate discharged from the converter during dephosphorization process, and The decarburization amount at the time of dephosphorization treatment calculated based on the exhaust gas data is corrected using a correction value calculated based on the operating factor at the time of dephosphorization, and after the dephosphorization treatment based on the corrected decarburization amount and the chartered data. A method for pre-melting molten iron is provided, comprising a carbon concentration estimation step for estimating carbon concentration.

A kind of method of refining of low cost production potassium steel

本发明涉及一种低成本生产高锰钢的精炼方法，该精炼方法分别在转炉出钢前和钢水精炼过程中加入锰合成渣，并在钢水精炼过程中加入还原剂进行脱硫处理，并加入添加料。按本发明方法制得的高锰钢，其磷杂质含量明显降低，生产高锰钢的过程明显降低了成本，而且减少了锰铁合金的使用，避免了生产锰铁合金时造成污染或消耗过多的劳动力。

Converter operating method

How to blow converter into ladle slag

본 발명은 레이들 슬래그를 매용제로 투입하여 취련하는 전로취련방법에 관한 것으로써, 레이들 슬래그가 슬래그 탈산 및 개질기술의 향상으로 융점이 낮고 염기도가 높은 특성을 갖고 있음에도 불구하고 재활용되지 못하고 대부분 매립되어지고 있다는데 착안하여 폐기물인 레이들 슬래그를 전로 매용제로 재활용하고자 하는데, 그 목적이 있다. 본 발명은 전로취련방법에 있어서, Al 2 O 3 의 함량이 20~50중량%인 레이들 슬래그를 전로 매용제로 전로에 투입하고; 그리고 상기 레이들 슬래그의 투입량을 취련이 끝난후 전로슬래그중의 Al 2 O 3 의 함량이 8중량% 이하가 되도록 조절되는 전로취련방법을 그 요지로한다.

Process for producing chromium containing molten iron

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Production method for controlling large-size hard inclusions in spring steel wire rod

本发明公开了一种控制弹簧钢盘条中大尺寸硬质夹杂物的生产方法，其包括转炉冶炼、LF精炼、连铸和加热开坯工序；所述转炉冶炼工序：转炉出钢脱氧合金化过程中，采取先碳脱氧后锰硅复合脱氧，锰硅复合脱氧时加入的合金中Mn含量与Si含量的重量比≥5.0；所述LF精炼工序：采用预熔精炼合成渣造渣，目标碱度w(CaO)/w(SiO 2 )为0.8～1.2，渣中w(Al 2 O 3 )≤3%、w(MnO)+w(MgO)≤10%，其余占比≤5%。采用本方法生产的弹簧钢热轧盘条，盘条横截面上氧化物夹杂直径得到有效减小；盘条经拉拔、热处理、喷丸后，弹簧钢丝的旋转弯曲疲劳寿命达到1×10 7 次以上，加工成的高强度汽车悬架簧疲劳寿命达到1×10 6 以上。

Method for refining hot metal

본 발명에 따른 전로 내 용선으로 산소 취입을 개시하여, 취련을 개시하는 과정, 취련 개시 시점부터 상기 취련 종료 지점 사이의 취련 구간 중, 용선 취련 75% 이상 시점 내지 85% 미만 시점에서 상기 용선의 성분 함량 및 온도를 측정하는 과정 및 측정된 상기 용선 중 탄소(C) 함량에 따라 KR 지금 투입 여부를 결정하는 과정을 포함한다. 따라서, 본 발명의 실시형태에 의하면, 전로 취련 시에 탄소 농도에 따라 KR 지금을 투입하여 탄소(C)를 제공함으로써, 취련 말기에 노내 압력이 부압(-)이 되는 것을 방지할 수 있고, 이에 따라 전로 내로 외부 공기가 유입되는 것을 방지할 수 있다. 따라서, 외부 공기 흡입에 따른 용선으로의 흡질을 방지할 수 있으며, 저질소강의 제조가 용이하다.

Process for the manufacture of an agent to form a granular basic slag in the steel industry

Control the production method of large scale hard inclusions object in spring steel wire rod

本发明公开了一种控制弹簧钢盘条中大尺寸硬质夹杂物的生产方法，其包括转炉冶炼、LF精炼、连铸和加热开坯工序；所述转炉冶炼工序：转炉出钢脱氧合金化过程中，采取先碳脱氧后锰硅复合脱氧，锰硅复合脱氧时加入的合金中Mn含量与Si含量的重量比≥5.0；所述LF精炼工序：采用预熔精炼合成渣造渣，目标碱度w(CaO)/w(SiO 2 )为0.8～1.2，渣中w(Al 2 O 3 )≤3%、w(MnO)+w(MgO)≤10%，其余占比≤5%。采用本方法生产的弹簧钢热轧盘条，盘条横截面上氧化物夹杂直径得到有效减小；盘条经拉拔、热处理、喷丸后，弹簧钢丝的旋转弯曲疲劳寿命达到1×10 7 次以上，加工成的高强度汽车悬架簧疲劳寿命达到1×10 6 以上。

The method of iron charge consumption when reducing steel-making

一种降低炼钢时铁料消耗的方法，属于炼钢领域。该降低炼钢时铁料消耗的方法包括以下步骤：将含钒铁水进行除硫作业后输送至转炉中；对转炉中的含钒铁水进行吹炼；排出半钢进行冶炼得到钢水，并回收钒渣；其中，除硫作业是将含钒铁水加热至1270℃以上后加入脱硫剂处理。本发明提供的降低炼钢时铁料消耗的方法能够降低脱硫剂用量，从而降低脱硫处理时的铁损耗。

COATING OF REFRACTORY OVENS PROCESS TO EXTEND THE LIFE OF AOD

A kind of method of duplex technique productions low-carbon welding wire steel

本发明涉及一种双联工艺生产低碳焊丝钢的方法，包括以下步骤：机械搅拌法对铁水脱硫、脱硫后的铁水通过脱磷转炉冶炼、脱磷转炉的出钢送入脱碳转炉冶炼、脱碳转炉的出钢进行循环脱气法精炼、循环脱气法精炼后的钢水进行钢包精炼、钢包精炼后的钢水进行板坯连铸。该双联工艺生产低碳焊丝钢的方法能保证焊丝性能良好，提高焊丝的冶金质量。

PROCESS FOR THE REMOVAL OF CONTAMINATING CHEMICAL ELEMENTS FROM CAST IRON, STEEL, OTHER METALS AND METALLIC ALLOYS

Process for manufacturing cement clinker in a plant, and cement clinker manufacturing plant as such

The invention relates to a process for manufacturing cement clinker in a plant having a cyclone preheater, a precalcination reactor, a rotary furnace and a clinker cooler. In the process, the flue gases from the furnace are conducted to the precalcination reactor, or even to the cyclone preheater. According to the invention, the precalcination reactor is fed with an oxygen-rich gas, the nitrogen content of which is less than 30%, constituting the sole oxygen source for said reactor, and a portion leaving the cyclone preheater is recycled into the plant so as to obtain a suitable flux necessary for suspending matter in said preheater, while the other portion, rich in carbon dioxide, is adapted for the purpose of a treatment for limiting the amount of carbon dioxide discharged into the atmosphere, such as particularly sequestration.

Method for Refining Return Molten Steel

본 발명은 반송 용강의 처리방법에 관한 것으로, 빈 전로에 합탕 용선을 장입시키는 단계와, 상기 전로에 합탕 용선 장입 후 반송 용강을 장입시키는 단계를 포함하는 반송 용강의 처리방법이 제공된다. 이에 따라서 반송 용강 및 합탕 용선의 전로 장입에 따른 대기 시간을 감소시켜 조업의 생산성을 향상시킬 수 있고, 용강 중 질소의 유입을 억제하여 저취에서 공급되는 교반 가스 중 질소 가스의 공급량을 감소시킬 수 있어 제조 원가를 낮출 수 있는 효과가 있다. 반송 용강, 합탕 용선, 전로, 정련, 취련

Method of operating a metallurgical furnace and a metallurgical furnace apparatus

TITLE METHOD OF OPERATING A METALLURGICAL FURNACE AND A METALLURGICAL FURNACE APPARATUS A B S T R A C T A method of operating a metallurgical furnace, and a furnace apparatus capable of using this method, in which coal is pulverized in a pulverizer vessel by interparticle collisions in at least one stream of gaseous medium, to produce ultrafine pulverized coal and feeding a mixture of the ultrafine pulverized coal and gaseous medium directly and continuously from the pulverizer vessel to the metallurgical furnace.

Method and installation for the separation of air.