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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 6. Отображено 6.
05-02-2014 дата публикации

Porous manganese slag-vitrified microsphere composite thermal-insulation mortar

Номер: CN103553516A
Автор: CHEN PING, ZOU XIAOPING, LIU RONGJIN, WEI JIAZHAN, ZHAO YANRONG, WEI HUAIJUN, JIANG HAN
Принадлежит:

The invention discloses a porous manganese slag-vitrified microsphere composite inorganic thermal-insulation mortar. The thermal-insulation mortar employs lightweight thermal-insulation aggregate (a vitrified microsphere and porous manganese slag), cementing materials and modification additives as main raw materials, wherein the vitrified microsphere and the porous manganese slag are used as a thermal-insulation main body, cement, micro steel slag powder, fly ash and limestone are used as the cementing materials, and dispersible latex powder, hydroxypropyl methyl cellulose, a wood fiber, a polypropylene fiber and a sisal fiber are used as the modification additives; the above-mentioned materials are mixed to form a pre-mixed dry powder thermal-insulation mortar. The raw materials of the thermal-insulation mortar comprise, by mass, 35 to 65% of the inorganic cementing materials, 15 to 45% of the vitrified microsphere, 20 to 45% of a manganese slag particle and the additives with total mass ...

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Номер записи: 1
02-05-2023 дата публикации

Two-roller dragging one-mill semi-finish grinding cement process system and production method thereof

Номер: CN116037287A
Автор: WEI HUAIJUN, ZENG RONG, TAO CONGXI, HUANG WEI, SONG YANG, ZHONG YU
Принадлежит:

The invention provides a two-roller dragging one-mill semi-finish grinding cement process system and a production method thereof, and belongs to the technical field of cement production, the system comprises two sets of roller press grinding systems and coarse material secondary ball milling systems, a roller press system online particle size distribution instrument, a ball mill system online particle size distribution instrument, a control device and a conveying chute. Two sets of roller press systems and one set of ball mill system are combined to grind cement, so that the installed power ratio of the roller press to the ball mill is greatly improved, the acting ratio of the roller press in the system is improved, and necessary conditions are provided for reducing the grinding power consumption.

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Номер записи: 2
02-05-2023 дата публикации

Cement grinding process and process system for combined separation of powder concentrator and settling chamber

Номер: CN116037306A
Автор: WEI HUAIJUN, ZENG RONG, ZHANG YUNJUN, FENG SENHONG, WEI YINGCHU, HUANG GUIMING, LUO YUN, WENG SONG
Принадлежит:

The invention discloses a cement grinding process and process system adopting combined separation of a powder concentrator and a settling chamber, and solves the technical problems of low powder concentration efficiency, high failure rate of a beater and high maintenance cost in the prior art. The device comprises a batching system (1), a feeding belt (2), a steady-flow weighing bin (3), a roller press (4), a first material elevator (5), a first-stage V-shaped powder concentrator (6), a screen (7), a second-stage V-shaped powder concentrator (8), a first-stage settling chamber (9), a second-stage settling chamber (10), a mill (15) and a second material elevator (16). According to the invention, a new powder selecting process is adopted to modify an existing system, the failure shutdown frequency and the maintenance cost of the system are reduced, the powder selecting efficiency of a roller press system and the fineness of materials entering a mill are improved, and the loading capacity ...

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Номер записи: 3
04-06-2014 дата публикации

Method for preparing high-iron cement by utilizing red mud

Номер: CN103833245A
Автор: ZHAO YANRONG, CHEN PING, ZHANG JUNFENG, LIU RONGJIN, WEI JIAZHAN, WEI HUAIJUN
Принадлежит:

The invention discloses a method for preparing high-iron cement by utilizing red mud. The cement clinker comprises the following minerals in percentage by weight: 25-40% of C4A3, 25-50% of C2S, 25-40% of C4AF and 0.01-2% of CT (perovskite). The method comprises the following steps of (1) respectively drying the red mud, limestone, aluminium materials, silicon materials and gypsum till the water content is less than 1%; (2) grinding the materials in a ball mill and then sieving with a square-hole sieve having meshes being 80mum for spare use; (3) batching the materials according to the preset composition of the minerals, adding a mineralizing agent with the mass being 1-3% of the total mass of the materials for batching, mixing uniformly and pressing; (4) sintering the obtained materials in the step (3) for 1-2 hours under the temperature of 1220-1300 DEG C, and quenching; and (5) adding gypsum with the mass being 5-15% of that of the obtained materials in the step (4), and grinding the ...

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Номер записи: 4
06-08-2014 дата публикации

Method for preparing belite-sulphate aluminium cement by using coal ashes and bayer-process red mud

Номер: CN103964713A
Автор: CHEN PING, WEI HUAIJUN, ZHAO YANRONG, LIU RONGJIN, HUANG XIAOQING, WEI JIAZHAN
Принадлежит:

The invention discloses a method for preparing belite-sulphate aluminium cement by using coal ashes and bayer-process red mud. The method comprises the following steps: separately crushing and grinding limestone, coal ashes, bayer-process red mud, flue gas desulfurization gypsum and bauxite and sieving; preparing raw materials according to the rate value of the clinker in which Cm is 0.95-1.0, P is 3.50-3.82 and N is 0.8-1.1, wherein the f-(SO3) content in a clinker controlled to be 1-1.5% and f-(CaO) content is controlled to be greater than -2.0%; mixing and tabletting the prepared raw materials; carrying out heat preservation at 1250-1300 DEG C for 0.5-1 hour, and then quenching to obtain the clinker; crushing the clinker and grinding the crushed clinker, gypsum and portland cement clinker together into the specification of 400+/-10m<2>/kg and preparing into cement. The mechanical property and the setting time of the cement disclosed by the invention can meet the requirements of 425 early-strength ...

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Номер записи: 5
24-06-2015 дата публикации

Preparation method of low-heat-consumption low-silicon-rate and high-strength silicate cement clinker

Номер: CN104724959A
Автор: ZENG RONG, ZHAO GUODONG, JI YOUHONG, ZHONG KEHUI, LI GUOJUN, FU GUIFANG, LU CAIKE, WEI HUAIJUN
Принадлежит:

The invention discloses a preparation method of a low-heat-consumption low-silicon-rate and high-strength silicate cement clinker. According to the preparation method, when a cement clinker is calcined on a new dry process line, the silicon rate of the clinker breaks a traditional range of a new dry process kiln and is decreased to be 2.0+/-0.1, so that the content of flux minerals in the calcining of the clinker is increased, the content of liquid phase quantity is increased, the burnability of a raw material is improved, and the calcining coal consumption of the clinker is reduced; meanwhile, the saturation ratio of the clinker is increased, and aluminum rate is adjusted to be applicable to an operation state of a rotary kiln, so that the content of C3S in the clinker is increased, and the strength of the clinker is guaranteed; by virtue of optimization and improvement of a calcining process, the agglomeration in the kiln caused by high liquid phase quantity is prevented; the energy consumption ...

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Номер записи: 6