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

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Применить Всего найдено 15. Отображено 15.
11-08-2023 дата публикации

Trans-crystallized iron phosphate and preparation process thereof

Номер: CN116573626A
Автор: LIU CHAOJIANG, ZENG WEI, LIU FA'AN, FANG JIN, WU JIALING, HAO DELI, HUANG DEMING, NI WEI
Принадлежит:

The invention relates to the technical field of iron phosphate, in particular to crystal-transformed iron phosphate and a preparation process I thereof. The invention discloses a preparation process of crystal-transformed iron phosphate, which comprises the following steps: S1, reacting to obtain an iron phosphate primary solution; s2, filtering to obtain a primary iron phosphate filter cake; s3, the primary iron phosphate filter cake obtained in the step S2 is sequentially subjected to pulping treatment, acidification treatment, heating treatment and filtering treatment, and a secondary iron phosphate filter cake is obtained; and S4, performing drying treatment to obtain an iron phosphate product. The preparation process is mainly characterized in that a crystallization promoting agent is used for promoting crystallization of a primary reaction solution, excessive impurities are prevented from being precipitated into an iron phosphate primary filter cake in a crystallization mode, then ...

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Номер записи: 1
06-06-2023 дата публикации

Method for removing sulfate radicals in phosphoric acid preparation process

Номер: CN116216672A
Автор: LENG WEIGUI, HUANG SHIYING, FANG JIN, CHENG JING, ZHAO GUOJUN, LIU FA'AN, HUA JIANQING
Принадлежит:

The invention relates to the technical field of phosphorite processing, in particular to a method for removing sulfate radicals in the phosphoric acid preparation process. The invention discloses a method for removing sulfate radicals in a phosphoric acid preparation process. The method comprises the following steps: washing an extract liquor containing crude phosphoric acid by using a dilute phosphoric acid solution of barium carbonate; the extraction liquid containing the crude phosphoric acid is obtained by extracting a crude phosphoric acid liquid with an extraction agent; the extraction agent is prepared from the following raw materials in percentage by weight: 30 to 40 percent of tributyl phosphate, 5 to 10 percent of an ether solvent, 5 to 8 percent of oil-based polyoxyethylene ether phosphate, 2 to 5 percent of sodium octyl sulfate, 5 to 8 percent of disodium stearyl sulfosuccinate, 10 to 13 percent of ammonium lauryl sulfate and the balance of an alcohol solvent. According to the ...

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Номер записи: 2
20-07-2016 дата публикации

Multiple spot source spectrum detector

Номер: CN0205388565U
Автор: LIU FAAN, LIU YI, TAN ZHANAO, CHEN JIAN, ZHU ZHAOXIA
Принадлежит:

... 本实用新型提供种多点光源光谱检测仪，包括壳体、光源、滤光片、检测器和处理器，所述处理器设置在所述壳体内，所述检测器设置在所述壳体的端部，所述检测器与所述处理器电连接，所述处理器用于处理所述检测器采集的数据，所述检测器为平面，所述滤光片设置在所述检测器的中部，所述光源设置在所述检测器上，且均匀地环设在所述滤光片的四周，所述光源与所述处理器电连接。与现有技术相比，本实用新型的微型光谱检测仪通过在滤光片的四周设置多个光源，从而使照射到样品上的检测光具有足够的亮度，确保检测器能够采集到稳定的反射光。 ...

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Номер записи: 3
14-07-2023 дата публикации

Method for removing nitric acid and metal impurities simultaneously

Номер: CN116425131A
Автор: LENG WEIGUI, FANG JIN, CHENG JING, SHANG SONG, HUANG SHIYING, ZHAO GUOJUN, LIU FA'AN, HUA JIANQING
Принадлежит:

The invention discloses a method for removing nitric acid and metal impurities at the same time, and relates to the technical field of phosphorite processing. The method for removing the nitric acid and the metal impurities at the same time comprises the following steps that a calcium removal solution is subjected to evaporation treatment under the conditions that the temperature ranges from 60 DEG C to 80 DEG C and the vacuum degree ranges from 20 kpa to 50 kpa, filtering is conducted after evaporation treatment is finished, and a crude phosphoric acid solution is obtained; wherein the total content of metal ions in the crude phosphoric acid solution is less than 100 ppm. According to the method for removing the nitric acid and the metal impurities simultaneously, the acidity of the phosphoric acid solution is reduced while the nitric acid is evaporated, heavy metal ions (calcium ions) originally dissolved in the nitric acid and the phosphoric acid solution are combined with phosphate ...

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Номер записи: 4
18-07-2023 дата публикации

Method, product and system for co-producing ammonium phosphate salt through nitrophosphate fertilizer device

Номер: CN116444300A
Автор: HUANG DEMING, ZHAO GUOJUN, CHENG JING, FANG JIN, LIU FA'AN, HUANG SHIYING, ZHANG LINGYUN, FENG JUNQIANG, HUA JIANQING
Принадлежит:

The invention discloses a method, a product and a system for co-producing ammonium phosphate salt through a nitrophosphate fertilizer device. The method for co-producing ammonium phosphate salt through the nitrophosphate fertilizer device comprises the following steps: carrying out acidolysis on phosphorite or phosphate concentrate, and separating acid-insoluble substances to obtain an acidolysis solution; the acid comprises nitric acid; freezing and crystallizing the acidolysis solution, and carrying out solid-liquid separation to obtain a first solution; adding a solution containing sulfate radicals into the first solution for decalcification to obtain a second solution; carrying out nitric acid removal treatment on the second solution to obtain a third solution; and adding ammonia into the third solution, and carrying out solid-liquid separation to obtain ammonium phosphate. According to the method, the high-purity ammonium phosphate is produced and prepared from the phosphate ore or ...

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Номер записи: 5
25-07-2023 дата публикации

Method for purifying phosphoric acid

Номер: CN116477588A
Автор: LENG WEIGUI, FANG JIN, HUANG DEMING, ZHANG LINGYUN, ZHAO GUOJUN, LIU FA'AN, HUA JIANQING
Принадлежит:

The invention relates to the technical field of phosphoric acid purification, and discloses a method for purifying phosphoric acid, which specifically comprises the following steps: S11, extracting crude phosphoric acid by using an extracting agent, pre-washing dilute phosphoric acid by using an extracted organic phase obtained by extraction, carrying out primary standing phase splitting on a pre-washed mixed solution, and carrying out secondary standing phase splitting on the pre-washed mixed solution; the water-phase acidic solution after primary standing and phase splitting can be recycled and reused; s12, removing calcium from the organic phase after primary standing and phase splitting by using an aqueous solution containing sulfate radicals, and then carrying out secondary standing and phase splitting; and S13, performing acid radical removal on the organic phase subjected to secondary standing phase separation, and then performing third standing phase separation. The method can effectively ...

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Номер записи: 6
13-06-2023 дата публикации

Process and system for preparing iron phosphate by applying circulating mixing and stirring outside kettle

Номер: CN116251552A
Автор: HUANG DEMING, HAO DELI, FANG JIN, ZHAO GUOJUN, LIU FA'AN, HUA JIANQING
Принадлежит:

The invention relates to the technical field of iron phosphate, in particular to a process and a system for preparing iron phosphate by applying circulating mixing and stirring outside a kettle. The invention discloses a process for preparing iron phosphate by applying circulating mixing and stirring outside a kettle, which comprises the following steps: adding an iron salt solution, a monoammonium phosphate solution and a protective agent into a reaction kettle, and carrying out early-stage reaction on the obtained mixed solution at 90-100 DEG C; after the earlier-stage reaction is finished, performing an out-of-kettle circular reaction at 85-90 DEG C; according to the technology, the reaction speed is high, the yield of the prepared iron phosphate is high, and the content of impurities in the iron phosphate is low.

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Номер записи: 7
25-04-2023 дата публикации

Lithium iron phosphate prepared from iron phosphate and lithium phosphate and preparation method of lithium iron phosphate

Номер: CN116002652A
Автор: HUANG DEMING, HAO DELI, FANG JIN, ZHAO GUOJUN, LIU FA'AN, HUA JIANQING
Принадлежит:

The invention relates to the technical field of lithium iron phosphate, in particular to lithium iron phosphate prepared from iron phosphate and lithium phosphate and a preparation method of the lithium iron phosphate. The invention discloses lithium iron phosphate prepared from iron phosphate and lithium phosphate. The weight ratio of Fe to P in an iron phosphate crystal is 0.95-0.985; the preparation method of the lithium iron phosphate comprises the following steps: mixing iron phosphate, phosphoric acid and lithium phosphate, adding an ethanol solution, carrying out multi-stage mixing and grinding, and then carrying out spray drying to obtain a precursor; and carrying out heat treatment on the precursor under the protection of nitrogen to generate the lithium iron phosphate material. The lithium iron phosphate provided by the invention has the advantages of high compaction density, high specific capacity and long cycle life.

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Номер записи: 8
25-08-2023 дата публикации

Process and system for preparing iron phosphate by applying circulating mixing and stirring outside kettle

Номер: CN116639671A
Автор: HUANG DEMING, HAO DELI, FANG JIN, ZHAO GUOJUN, LIU FA'AN, HUA JIANQING
Принадлежит:

The invention relates to the technical field of iron phosphate, in particular to a process and a system for preparing iron phosphate by applying circulating mixing and stirring outside a kettle. The invention discloses a process for preparing iron phosphate by applying circulating mixing and stirring outside a kettle, which comprises the following steps: adding an iron salt solution, a monoammonium phosphate solution and a protective agent into a reaction kettle, and carrying out early-stage reaction on the obtained mixed solution at 90-100 DEG C; after the earlier-stage reaction is finished, performing an out-of-kettle circular reaction at 85-90 DEG C; according to the technology, the reaction speed is high, the yield of the prepared iron phosphate is high, and the content of impurities in the iron phosphate is low.

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Номер записи: 9
25-04-2023 дата публикации

Method for preparing and purifying calcium sulfate in nitric acid solution

Номер: CN116002740A
Автор: LENG WEIGUI, CHENG JING, FANG JIN, LI XIUFU, ZHAO GUOJUN, LIU FA'AN, HUA JIANQING
Принадлежит:

The invention discloses a method for preparing and purifying calcium sulfate in a nitric acid solution, and relates to the technical field of phosphorite processing. The method for preparing and purifying calcium sulfate in the nitric acid solution comprises the following steps: adding a decalcifying agent and a settling promoting agent into the nitric acid solution containing calcium ions, preserving heat at 60-80 DEG C for 10-15 minutes, cooling to 5-10 DEG C after heat preservation is finished, and filtering to obtain an insoluble substance; and carrying out post-treatment on the insoluble substance to obtain purified calcium sulfate. According to the method for preparing and purifying the calcium sulfate in the nitric acid solution, the sedimentation of calcium ions is improved by adding the sedimentation promoting agent, and meanwhile, the acidity of the calcium sulfate is reduced by crushing and washing.

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Номер записи: 10
21-07-2023 дата публикации

Iron phosphate crystal and preparation method thereof

Номер: CN116462171A
Автор: HUANG DEMING, HAO DELI, FANG JIN, ZHAO GUOJUN, LIU FA'AN, HUA JIANQING
Принадлежит:

The invention relates to the technical field of iron phosphate, in particular to an iron phosphate crystal and a preparation method thereof. The invention discloses an iron phosphate crystal. The weight ratio of Fe to P in the iron phosphate crystal is 0.96-0.985; the preparation method of the iron phosphate comprises the following steps: adding an iron salt solution, a monoammonium phosphate solution and hydrogen peroxide into a reaction kettle, and carrying out early-stage reaction on the obtained mixed solution at 90-100 DEG C; after the earlier-stage reaction is finished, performing an out-of-kettle circular reaction at 85-90 DEG C; the prepared iron phosphate with the weight ratio of Fe to P being 0.95-0.985 is beneficial to preparation of high-performance lithium iron phosphate.

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Номер записи: 11
01-08-2023 дата публикации

Method for purifying ammonium phosphate

Номер: CN116514082A
Автор: LENG WEIGUI, CHENG JING, FANG JIN, HUANG SHIYING, ZHAO GUOJUN, LIU FA'AN, HUA JIANQING
Принадлежит:

The invention relates to the technical field of phosphoric acid treatment after denitration, in particular to a method for purifying ammonium phosphate. The invention discloses a method for purifying ammonium phosphate, which comprises the following steps: S1, adding a purifying agent into a crude phosphoric acid solution obtained after denitration treatment at the temperature of 50-60 DEG C for purification reaction to obtain purified slurry after the purification is finished; ammonia gas is introduced into the purified slurry for a neutralization reaction, and the pH of the purified slurry is regulated and controlled; after the neutralization reaction is finished, neutralized slurry is obtained; s2, carrying out filter pressing treatment on the neutralized slurry to obtain refined ammonium phosphate filtrate; s3, the refined ammonium phosphate filtrate is subjected to triple-effect countercurrent evaporation concentration treatment, and a third-stage ammonium phosphate concentrated solution ...

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Номер записи: 12
22-08-2023 дата публикации

Method for preparing high-quality iron phosphate by improving calcining conditions and ball-milling treatment

Номер: CN116621142A
Автор: LIU CHAOJIANG, LIU FA'AN, ZENG WEI, FANG JIN, WU JIALING, HAO DELI, HUANG DEMING, NI WEI
Принадлежит:

The invention relates to the technical field of iron phosphate, in particular to a method for preparing high-quality iron phosphate by improving calcination conditions and ball milling treatment. The invention discloses a method for preparing high-quality iron phosphate by improving calcination conditions and ball-milling treatment. The method comprises the following steps: preparing iron phosphate dihydrate powder; the method comprises the following steps: fully mixing iron phosphate dihydrate powder and a fluxing agent, and sequentially carrying out flash evaporation treatment and calcination treatment to obtain calcined iron phosphate; and carrying out ball milling treatment on the calcined iron phosphate, and washing and drying the iron phosphate subjected to ball milling to obtain an iron phosphate finished product. According to the method for preparing the high-quality iron phosphate by improving the calcination conditions and ball milling treatment, the fluxing agent is added in ...

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Номер записи: 13
18-07-2023 дата публикации

Method, product and system for co-producing iron phosphate through nitrophosphate fertilizer device

Номер: CN116443832A
Автор: HUANG DEMING, ZHAO GUOJUN, FANG JIN, HUANG SHIYING, LIU FA'AN, CHENG JING, ZHANG LINGYUN, FENG JUNQIANG, HUA JIANQING
Принадлежит:

The invention discloses a method, a product and a system for co-producing iron phosphate through a nitrophosphate fertilizer device. The method comprises the following steps: carrying out acidolysis on phosphorite or phosphate concentrate by using nitric acid, and separating acid-insoluble substances to obtain an acidolysis solution; freezing and crystallizing the acidolysis solution, and carrying out solid-liquid separation to obtain a first solution; adding the first solution into a solution containing sulfate radicals for reaction to obtain a second solution; carrying out nitrate removal treatment on the second solution to obtain a third solution; adding ammonia into the third solution for neutralization, performing solid separation on the neutralized solution to obtain an ammonium phosphate salt solution, and adding an iron source into the ammonium phosphate salt solution for reaction to obtain iron phosphate. According to the method, the high-purity iron phosphate is prepared from ...

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Номер записи: 14
18-07-2023 дата публикации

Method, product and system for co-producing phosphoric acid through nitrophosphate fertilizer device

Номер: CN116443829A
Автор: HUANG DEMING, ZHAO GUOJUN, HUANG SHIYING, FANG JIN, LIU FA'AN, CHENG JING, ZHANG LINGYUN, FENG JUNQIANG, HUA JIANQING
Принадлежит:

The invention discloses a method, a product and a system for co-producing phosphoric acid through a nitrophosphate fertilizer device. The method for co-producing phosphoric acid through the nitrophosphate fertilizer device comprises the following steps: carrying out acidolysis on phosphorite or phosphate concentrate by using nitric acid, and separating acid insoluble substances to obtain an acidolysis solution; freezing and crystallizing the acidolysis solution, and carrying out solid-liquid separation to obtain a first solution; adding the first solution into a sulfuric acid solution for decalcification to obtain a second solution; carrying out nitric acid removal treatment on the second solution to obtain a third solution; extracting the third solution through an extraction solvent to obtain an extraction phase; and carrying out reverse extraction on the extraction phase to obtain a phosphoric acid solution. According to the method, the high-purity phosphoric acid is prepared from the ...

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Номер записи: 15