SU51896A1 - The method of obtaining the average sodium phosphate from ferrophosphorus - Google Patents

The method of obtaining the average sodium phosphate from ferrophosphorus

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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
Application number
SU??-2557A
Other languages
Russian (ru)
Inventor
А.П. Крешков
Я.И. Михайленко
Original Assignee
А.П. Крешков
Я.И. Михайленко
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 А.П. Крешков, Я.И. Михайленко filed Critical А.П. Крешков
Application granted granted Critical
Publication of SU51896A1 publication Critical patent/SU51896A1/en

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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

SU??-2557A 1936-12-03 1936-12-03 The method of obtaining the average sodium phosphate from ferrophosphorus SU51896A1 (en)

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

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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)

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