SU51896A1 - The method of obtaining the average sodium phosphate from ferrophosphorus - Google Patents
The method of obtaining the average sodium phosphate from ferrophosphorusInfo
- Publication number
- SU51896A1 SU51896A1 SU??-2557A SU51896DA SU51896A1 SU 51896 A1 SU51896 A1 SU 51896A1 SU 51896D A SU51896D A SU 51896DA SU 51896 A1 SU51896 A1 SU 51896A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- ferrophosphorus
- sodium phosphate
- obtaining
- average sodium
- hydrochloric acid
- Prior art date
Links
Description
Предметом насто щего изобретени вл етс способ получени среднего фосфорнокислого натри из феррофосфора .The subject of the present invention is a process for the preparation of medium sodium phosphate from ferrophosphorus.
Тонко размолотый феррофосфор тщательно смешивают с размолотым железопиритом из расчета 1 моль Fe.,P на б молей FeS.,, и смесь сплавл етс в закрь1том тигле при температуре 700-800 в течение 2 часов,The finely milled ferrophosphorus is thoroughly mixed with milled ferropyrite at the rate of 1 mole of Fe., P per b moles of FeS., And the mixture is fused in a closed crucible at a temperature of 700-800 for 2 hours,
Полученный сплав обрабатываетс избыточным количеством концентрированной сол ной кислоты, и выдел ющийс при этом сероводород используетс дл тех или иных целей.The resulting alloy is treated with excess concentrated hydrochloric acid, and the hydrogen sulfide released during this process is used for various purposes.
По окончании реакции непрореагировавцдий остаток отфильтровываетс , а фильтрат, после упарки, обрабатываетс концентрированным раствором едкого натра дл осаждени гидрата закиси железа и нейтрализации фосфорной кислоты.At the end of the reaction, the unreacted residue is filtered, and the filtrate, after evaporation, is treated with a concentrated solution of caustic soda to precipitate ferrous oxide and neutralize phosphoric acid.
Осадок гидроокиси железа отфильтровываетс , после чего фильтрат выпариваетс , и из него выкристаллизовываетс фосфорнокислый натрий с примесью соды и хлористого натри .The iron hydroxide precipitate is filtered off, after which the filtrate is evaporated, and sodium phosphate crystallizes out of it, mixed with soda and sodium chloride.
Количество извлеченного этим путем фосфора из феррофосфора достигает 75% от теории.The amount of phosphorus extracted from ferrophosphorus by this way reaches 75% of the theory.
Вместо сол ной кислоты дл обработки фосфиднопиритного сплава может быть применена азотна кислота, в результате чего выдел етс элементарна сера, по отделении которой дальнейша переработка раствора ведетс так же, как в случае применени сол ной кислоты.Instead of hydrochloric acid, nitric acid can be used to treat the phosphide pyrite alloy, as a result of which elemental sulfur is released, after which the further processing of the solution is carried out in the same way as in the case of using hydrochloric acid.
При азотнокислом варианте процент использовани фосфора из феррофосфора повышаетс до 90%. Конечный продукт - фосфат натри содержит примеси соды и селитры.In the case of the nitric acid variant, the percentage of phosphorus from ferrophosphorus rises to 90%. The final product, sodium phosphate, contains impurities of soda and nitrate.
Предмет изобретени .The subject matter of the invention.
1. Способ получени среднего фосфорнокислого натри из феррофосфора , отличающийс тем, что феррофосфор сплавл ют с пиритом, полученный сплав выщелачивают сол ной кислотой с использованием выде1. A process for the preparation of medium sodium phosphate from ferrophosphorus, characterized in that the ferrophosphorus is fused with pyrite, the resulting alloy is leached with hydrochloric acid using selected
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU51896T | 1936-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
SU51896A1 true SU51896A1 (en) | 1937-11-30 |
Family
ID=52054345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU??-2557A SU51896A1 (en) | 1936-12-03 | 1936-12-03 | The method of obtaining the average sodium phosphate from ferrophosphorus |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU51896A1 (en) |
-
1936
- 1936-12-03 SU SU??-2557A patent/SU51896A1/en active
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