SU402307A1 - METHOD OF EXTRACT SELENA - Google Patents

METHOD OF EXTRACT SELENA

Info

Publication number
SU402307A1
SU402307A1 SU1732887A SU1732887A SU402307A1 SU 402307 A1 SU402307 A1 SU 402307A1 SU 1732887 A SU1732887 A SU 1732887A SU 1732887 A SU1732887 A SU 1732887A SU 402307 A1 SU402307 A1 SU 402307A1
Authority
SU
USSR - Soviet Union
Prior art keywords
selenium
selena
extract
compounds
acid
Prior art date
Application number
SU1732887A
Other languages
Russian (ru)
Inventor
А. А. Жукова В. С. Епифанов Л. В. Кон хина
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 filed Critical
Priority to SU1732887A priority Critical patent/SU402307A1/en
Application granted granted Critical
Publication of SU402307A1 publication Critical patent/SU402307A1/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B19/00Selenium; Tellurium; Compounds thereof
    • C01B19/02Elemental selenium or tellurium

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

1one

Изобретение относитс  к области извлечени  селена из концентрированных растворов серной кислоты.This invention relates to the recovery of selenium from concentrated solutions of sulfuric acid.

Известен способ извлечени  селена из концентрированных растворов серной кисло - 5 ты восстановлением окисных соединений селена маркаптаном.A known method for extracting selenium from concentrated solutions of sulfuric acid is the recovery of oxide compounds of selenium by marcaptan.

Недостатком известного способа 5тл етс  то, что получаемый при этом селеновый шлам загр знен серой. Кроме того, меркап- 10 таны относ тс  к токсичным соединени м.The disadvantage of the known method 5 is that the selenium sludge thus obtained is contaminated with sulfur. In addition, mercap-10 tans are toxic compounds.

Отличительной особенностью предложенного способа  вл етс  то, что восстановление провод т жидким цикл oreксаноном при температуре 65-85- С.15A distinctive feature of the proposed method is that the reduction is carried out by a liquid cycle with orexanone at a temperature of 65-85 ° C.15

Это позвол ет повысить качество продукта и улучшить услови  труда.This allows for improved product quality and improved labor conditions.

Сущность способа заключаетс  в том, то концентрированную 85-92% серную кислоту, содержащую растворенные соеди- 20 нени  селена, при температуре 65-85°С обрабатывают жидким циклогексаноном, добавл емым к кислоте в стехиометричес- ком количестве по отношению к растворенному селену в соответствии со схемой:25The essence of the method lies in the fact that concentrated 85-92% sulfuric acid containing dissolved selenium compounds at 65-85 ° C is treated with liquid cyclohexanone added to the acid in stoichiometric amount relative to the dissolved selenium in accordance with with scheme: 25

2Си( + 3 S 2Cu (+ 3 S

- 3SV+ (СН ).СООН- 3SV + (CH) .COOH

л l

Процесс восстановлени  соединений селен на 92-94% проходит за 1О-15 мин.The reduction process of compounds selenium at 92-94% takes place in 1O-15 minutes.

П р и м а р. 1 л серной кислоты (уд. вес. 1,82 г/см), содержащий 24О г/нм соединений сеггена в пересчете на селен, вьщерживают при перемешивании и при температуре 75ОС с О,2г циклогексанона , добавленного к кислоте. Через 15 мин перемешивание прекращают, кислоту отфильтровьтают. Селеновый шлам, извлеченный из кислоты на 92-94%, после отделени  от КИС310ТЫ содержал около 9О% селена.PRI m and p. 1 liter of sulfuric acid (sp. Weight, 1.82 g / cm), containing 24 O g / nm of seggen compounds in terms of selenium, is kept under stirring and at a temperature of 75 ° C with O, 2 g of cyclohexanone added to the acid. After 15 min, stirring is stopped, the acid is filtered off. Selenium slurry, extracted from 92-94% acid, after separation from KIS310TY contained about 9O% selenium.

Предмет изобретени  Способ извлечени  селена из концентированных растворов серной кислоты восстановлением окисных соединений селена, отличающийс  тем, что, с целью повышени  качества продукта, и улучшени  условий труда, восстановление провод т жидким циклогексаноном при температуре 65-85°С.The subject of the invention is a method for extracting selenium from concentrated solutions of sulfuric acid by reducing the oxide compounds of selenium, characterized in that, in order to improve the quality of the product and improve working conditions, the reduction is carried out with liquid cyclohexanone at a temperature of 65-85 ° C.

SU1732887A 1972-01-03 1972-01-03 METHOD OF EXTRACT SELENA SU402307A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1732887A SU402307A1 (en) 1972-01-03 1972-01-03 METHOD OF EXTRACT SELENA

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1732887A SU402307A1 (en) 1972-01-03 1972-01-03 METHOD OF EXTRACT SELENA

Publications (1)

Publication Number Publication Date
SU402307A1 true SU402307A1 (en) 1974-05-15

Family

ID=20498658

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1732887A SU402307A1 (en) 1972-01-03 1972-01-03 METHOD OF EXTRACT SELENA

Country Status (1)

Country Link
SU (1) SU402307A1 (en)

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