SU113092A1 - The method of obtaining metallic chromium - Google Patents

The method of obtaining metallic chromium

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Publication number
SU113092A1
SU113092A1 SU584462A SU584462A SU113092A1 SU 113092 A1 SU113092 A1 SU 113092A1 SU 584462 A SU584462 A SU 584462A SU 584462 A SU584462 A SU 584462A SU 113092 A1 SU113092 A1 SU 113092A1
Authority
SU
USSR - Soviet Union
Prior art keywords
chromate
chromium
metallic chromium
calcium
obtaining metallic
Prior art date
Application number
SU584462A
Other languages
Russian (ru)
Inventor
Н.Г. Крайзман
В.В. Сагиров
Original Assignee
Н.Г. Крайзман
В.В. Сагиров
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Н.Г. Крайзман, В.В. Сагиров filed Critical Н.Г. Крайзман
Priority to SU584462A priority Critical patent/SU113092A1/en
Application granted granted Critical
Publication of SU113092A1 publication Critical patent/SU113092A1/en

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Description

Мста,-1личсский хром обычно получают путем алюмо- или силикотсрмического восстановлени  его пз окиси хрома, котора , в свою очередь , получаетс  в результате сложной химической переработки хромата натри  или других соединений хрома.Msta, lichlis chromium is usually obtained by alumi- num or silicotone reduction of its chromium oxide, which, in turn, is obtained as a result of the complex chemical processing of sodium chromate or other chromium compounds.

Способ этот требует сложной апиаратуры , длительного процесса, а получаемый металлический хром имеет высокую себестоимость.This method requires a complex process, a long process, and the resulting metallic chromium has a high cost.

Предлагаемый способ исключает переработку хромата натри  на окись хрома и этим дает возможность непосредственно получать металлический хром из хромата или хромихромата кальци  по более простой и дешевой схеме, не требующей сложной аппаратуры.The proposed method eliminates the processing of sodium chromate to chromium oxide and thus makes it possible to directly produce metallic chromium from calcium chromate or chromium chromate using a simpler and cheaper scheme that does not require complex equipment.

Технологи  получени  хромата и хромихромата кальци  заключаетс  в следующем:The technology for producing calcium chromate and chromate chromate is as follows:

Полученные по обычной технологии натриевые соли хрома (Na2Cr2O4) подвергаютс  обработке азотнокислым кальцием с последующим отделением осадка хромата кальци  фильтрацией и прокаливанием этого осадка при температуреThe sodium chromium salts (Na2Cr2O4) obtained by conventional technology are treated with calcium nitrate, followed by separation of the precipitate of calcium chromate by filtration and calcining this precipitate at a temperature of

1100 в присутствии избытка окиси кальци  илп без него, в результате чсго образуютс  прокаленные хромат или хромнхромат кальци .1100 in the presence of an excess of calcium oxide or without it, as a result of which calcined chromate or calcium chromate is formed.

Содержание хрома в продукте колеблетс  от 98 до 99%, а выход продукта составл ет 91-95%.The chromium content in the product ranges from 98 to 99%, and the product yield is 91-95%.

Хромат или хромихромат кальци   вл ютс  основным сырьем дл  получени  металлического хрома известными алюмотермическим пли силикотермичсскик способами.Calcium chromate or chromate chromate are the main raw materials for the production of metallic chromium by the known aluminothermic pl silicothermic methods.

Выдел емый при фильтрации хромата раствор азотнокислого натри  после кристаллизации и центрифугировани  подвергаетс  сушке и  вл етс  побочным ценным продуктом .The solution of sodium nitrate that is isolated during the filtration of chromate after crystallization and centrifugation is dried and is a by-product.

Предмет изобретени Subject invention

Способ получени  металлического хрома путем CIMHKO- или алюмотепмического восстанов.ченп  его соединений , о т л и ч а ю 1ц и и с   тел;, что, с целью снижени  себестоимости хрома, в качестве исходного продукта при восстаиовлении примен ют хромат или хромихромат кальци .The method of obtaining metallic chromium by CIMHKO- or alumina-pyrexin reduction of its compounds, which is from the body; that, in order to reduce the cost of chromium, calcium chromate or chromate chromate is used as a starting product.

SU584462A 1957-10-05 1957-10-05 The method of obtaining metallic chromium SU113092A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU584462A SU113092A1 (en) 1957-10-05 1957-10-05 The method of obtaining metallic chromium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU584462A SU113092A1 (en) 1957-10-05 1957-10-05 The method of obtaining metallic chromium

Publications (1)

Publication Number Publication Date
SU113092A1 true SU113092A1 (en) 1957-11-30

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Family Applications (1)

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SU584462A SU113092A1 (en) 1957-10-05 1957-10-05 The method of obtaining metallic chromium

Country Status (1)

Country Link
SU (1) SU113092A1 (en)

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