SU583098A1 - Method of preparing chromous hydroxide - Google Patents

Method of preparing chromous hydroxide

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Publication number
SU583098A1
SU583098A1 SU7502122009A SU2122009A SU583098A1 SU 583098 A1 SU583098 A1 SU 583098A1 SU 7502122009 A SU7502122009 A SU 7502122009A SU 2122009 A SU2122009 A SU 2122009A SU 583098 A1 SU583098 A1 SU 583098A1
Authority
SU
USSR - Soviet Union
Prior art keywords
chromium
hydroxide
sodium
alkaline solution
chromous
Prior art date
Application number
SU7502122009A
Other languages
Russian (ru)
Inventor
Гурий Дмитриевич Мазалецкий
Владимир Иванович Дейнеженко
Сергей Михайлович Голодов
Юрий Ефимович Важенин
Original Assignee
Предприятие П/Я А-7125
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 Предприятие П/Я А-7125 filed Critical Предприятие П/Я А-7125
Priority to SU7502122009A priority Critical patent/SU583098A1/en
Application granted granted Critical
Publication of SU583098A1 publication Critical patent/SU583098A1/en

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Description

1one

Изобретение относитс  к области пЪлучени  хромовых соединений - сырь  дл  выпплавки технического хрома силикотермией.The invention relates to the field of emission of chromium compounds, a raw material for melting technical chromium by silicothermia.

Известен способ получени  гидроокиси хрома путем восстановлени  хромата натри  5 водородом в присутствии куприта натри  l. Недостатками его  вл ютс  необходимость ведени  процесса при высоком давлении в реакционном пространстве ( л 30 атм); загр знение гидроокиси хрома меаыо, кото- ю ра ,  вл  сьНежелательной примесью, при выплавке хрома целиком переходит в сплав.A known method for producing chromium hydroxide by reducing sodium chromate 5 with hydrogen in the presence of sodium cuprite is l. Its disadvantages are the necessity of conducting the process at high pressure in the reaction space (l 30 atm); Contamination of chromium hydroxide, which is an undesirable impurity, during the smelting of chromium is completely converted into an alloy.

Известен также способ получени  гидроокиси хрома, включающий восстановление 15 хромата натри  серой, отделение фильтрацией гидроокиси хрома от щелочного раствора тиосульфата натри  и последующую промывку гидроокиси 2.There is also known a method for producing chromium hydroxide, which includes the reduction of sodium chromate 15 by sulfur, the separation of chromium hydroxide by filtration from an alkaline solution of sodium thiosulfate and the subsequent washing of hydroxide 2.

Однако содержание воды в такой гидро- 20 окиси весьма высоко ( 6О %), что делает невозможным ее использование при выплавке силикохрома и силикотермического хрома.However, the content of water in such hydro-oxide is very high (6O%), which makes it impossible to use it in the smelting of silicon-chrome and silicone-thermal chromium.

Целью изобретени   вл етс  получение продукта, пригоднотО цп  использовани  в 25The aim of the invention is to obtain a product suitable for use in 25

качестве сырь  при выплавке силикохрома и силикотермическэт о хрома.as raw material in the smelting of silicochrome and silicothermiccat chromium.

Поставленна  пель. достигаетс  предлагаемым способом получени  гидроокиси хрома, включаквдим восстановление хромата натри  серой, отделение гидроокиси хрома от щелочного раствора тиосульфата натри  и сушку ее при температуре 2ОО25О°С .Put pell. This is achieved by the proposed method for the preparation of chromium hydroxide, including the reduction of sodium chromate with sulfur, the separation of chromium hydroxide from an alkaline solution of sodium thiosulfate and its drying at a temperature of 2OO25O ° C.

Отличительным признаком способа  вл етс  сушка./отделенной от щелэчного раствора тиосульфата натри  гидроокиси хрома ; при температуре 20О-25О с.A distinctive feature of the method is drying. / Chromium hydroxide separated from the alkaline solution of sodium thiosulfate; at a temperature of 20 ° -25 ° C.

Пример. 1ОО в.ч. пасты гидроокиси хрома, полученной в результате восстановлени  хромата натри  серой при 102 С и отделенной от щелочного раствора тиосульфата натри , содержащей 33,4% Ог ji Оз, a MdaSjOi , 4%NQ ОН, 0,02% FeO, остальное воца, просущили при температуре После сушки получено 44,4 в.ч продукта, содержащего 71,8% Сг2 4,3 %Na2S20.j; 8,5%МйОН; 0,04% FeO; 1,2% в.р. С Оз и используемого при выплавке хрома силикстврмией .Example. 1OO v.ch. chromium hydroxide paste obtained by reducing sodium chromate with sulfur at 102 ° C and separated from alkaline sodium thiosulfate solution containing 33.4% Og ji Oz, a MdaSjOi, 4% OH NQ, 0.02% FeO, After drying, 44.4 hp of product was obtained, containing 71.8% Cr2 and 4.3% Na2S20.j; 8.5% MION; 0.04% FeO; 1.2% ip With oz and used in the smelting of chromium silicometry.

.( - , -у:iBi /-. :Д«|у...ц. (-, -y: iBi / -.: D “| y ... c

.. .. - .- -ifcf %.«J.. .. - .- -ifcf%. "J

3434

Claims (2)

Формула изобретени отделенную от щелочного раствора тиосульСпособ получени  гиароокисв хрома,температуре 2ОО-250 СClaims of the Invention Separated from an Alkaline Solution of Thiosoul Chromium Hydrooxides in a Temperature of 2OO-250 ° C включающий восстановление.хромата натри Источники информации, прин тые во внисерой и отделение гидроокиси хрома от5 мание при экспертизе;including the restoration of sodium chromate. Sources of information taken at the heading and separation of chromium hydroxide are considered for examination; щелочного раствора тиосульфата натри ,i. Авторское свидетельство СССРsodium thiosulfate alkaline solution, i. USSR author's certificate о т л и ч а ю ш и и с   тем, что, с це-№ 173208, кл, С 01 G-37/O2, 29.05.63About tl and h and y and with the fact that, with tse-№ 173208, class, With 01 G-37 / O2, 29.05.63 лью получени  продукта, пригодного дл  ис- to obtain a product suitable for use 2. Авербух Г. Д., Павлов П. Г.Технолопользовани  в качестве сырь  при выплавкеги  соединений хрома. Л., Хими , 19732. Averbukh GD, Pavlov P.G. Techno-use as a raw material in the production of chromium compounds. L., Himi, 1973 силикохрома и силйкотермического хрома, с.218.silicochrome and silothermic chromium, p. 583098583098 фата натри  гидроокись хрома сушат приsodium hydroxide chromium hydroxide is dried at
SU7502122009A 1975-04-07 1975-04-07 Method of preparing chromous hydroxide SU583098A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU7502122009A SU583098A1 (en) 1975-04-07 1975-04-07 Method of preparing chromous hydroxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU7502122009A SU583098A1 (en) 1975-04-07 1975-04-07 Method of preparing chromous hydroxide

Publications (1)

Publication Number Publication Date
SU583098A1 true SU583098A1 (en) 1977-12-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU7502122009A SU583098A1 (en) 1975-04-07 1975-04-07 Method of preparing chromous hydroxide

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SU (1) SU583098A1 (en)

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