SU569531A1 - Method of preparing sodium sulphide - Google Patents

Method of preparing sodium sulphide

Info

Publication number
SU569531A1
SU569531A1 SU7602331082A SU2331082A SU569531A1 SU 569531 A1 SU569531 A1 SU 569531A1 SU 7602331082 A SU7602331082 A SU 7602331082A SU 2331082 A SU2331082 A SU 2331082A SU 569531 A1 SU569531 A1 SU 569531A1
Authority
SU
USSR - Soviet Union
Prior art keywords
sludge
sodium
sodium sulphide
washing
preparing sodium
Prior art date
Application number
SU7602331082A
Other languages
Russian (ru)
Inventor
Маргарита Федоровна Волкова
Анатолий Григорьевич Прохоров
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 SU7602331082A priority Critical patent/SU569531A1/en
Application granted granted Critical
Publication of SU569531A1 publication Critical patent/SU569531A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/22—Alkali metal sulfides or polysulfides
    • C01B17/24—Preparation by reduction
    • C01B17/26—Preparation by reduction with carbon

Description

(54) СПОСОБ ПОЛУЧЕНИЯ СЕРНИСТОГО НАТРИЯ(54) METHOD FOR PRODUCING SULFUR SODIUM

1one

Изобретение относитс  к производству ми еральных солей и может быть использовано в химической промышленности дл  получени  технического сернистого натри .The invention relates to the production of mineral salts and can be used in the chemical industry to produce technical sodium sulphide.

Известен способ получени  сернистого нат ;ри  с одностадийной отмывкой шлама от сернистого натри , включающий восстановление брикетированного сульфата натри  доменным коксом, выщелачивание плава, фильтрацию полученной пульпы и отмывку шлама гор чей водой с последу«ощей фильтрацией . По этому способу шлам, выбрасываемой в отвал содержит до 10% . В пересчёте на сухое вещество шлам содержит 75% растЬорнмых солей натри . На 1 т готового про дукта выбрасываетс  в отвал - 500 кг шлама.A known method of producing sodium sulphide with one-stage washing of sulphur of sodium sulphate involves the recovery of briquetted sulphate with domain coke, leaching of the melt, filtering the resulting slurry and washing the sludge with hot water followed by filtration. In this method, the sludge discharged into the dump contains up to 10%. In terms of dry matter, the sludge contains 75% sodium boron salt. Per 1 ton of finished product is thrown into the dump - 500 kg of sludge.

Известен также способ производства сернистого натри  с двухстадийной отмывкой шлама , Шлам отмывают от сернистого натри  вначале с;лабыми щелоками, содержащими 6-8% , затем гор чей водой с последующей (2-ой и 3-ей) фильтрацией пульпы после каждой отмывки,There is also known a method for the production of sodium sulphide with a two-stage washing of sludge, the sludge is washed from sodium sulphate first with labyly lye containing 6-8%, then hot water followed by (2nd and 3rd) filtration of the pulp after each washing,

По этому способу выбрасываемый в от .вал щдаам должен содержать не более 3% NOfjS- Однако двухстадийна  отмывка шлама не обеспечивает нормированного содержани  сернистого натри  (не более 3%) в щламе, выбрасываемом в отвал. Треть  фильтраци  настолько тормозит процесс производства сернистого натри , что экономичнее исключить из схемы вторую отмывку щлама с поледующей фильтрацией и шлам с содержание . до 10%NO(jS выбрасывать в отвал.According to this method, emitted into the shaft should contain no more than 3% NOfjS- However, the two-stage washing of the sludge does not provide the normalized content of sodium sulfide (no more than 3%) in the mud ejected into the dump. The third filtering so slows down the process of sodium sulfide production that it is more economical to exclude from the scheme the second washing of the slime with the next filtration and slime with content. up to 10% NO (jS to dump.

Целью изобретени ,  вл етс  1штенсификаци  процесса фильтрации пульпы после второй отмывки шлама и повышение степени извлечени  солей из шлама.The aim of the invention is to 1scanify the filtration process of the pulp after the second washing of the sludge and increasing the degree of extraction of salts from the sludge.

Поставленна  цель достигаетс тем, что шлам перед второй отмывкой прокаливают в окислительной атмосфере при 6ОО-85О С а затем уже отмывают гор чей водой от растворимых солей натри .The goal is achieved by the fact that the slurry is calcined before the second washing in an oxidizing atmosphere at 6OO-85 ° C and then washed with soluble water from soluble sodium salts.

Технологи  способа состоит в следукиие Шихта, состо ща  из кускового кокса и брикетированного сульфата натри  в cooi-ноШении 1:2, подаетс  в шахтную поч1 ;иг  восстановлени  сульфата натри , П/сав (;o|i-The technology of the process consists in the following charge, consisting of lump coke and briquetted sodium sulphate in a cooler ratio of 1: 2, supplied to the mine floor; the recovery of sodium sulphate, P / Sav (; o | i-

SU7602331082A 1976-03-09 1976-03-09 Method of preparing sodium sulphide SU569531A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU7602331082A SU569531A1 (en) 1976-03-09 1976-03-09 Method of preparing sodium sulphide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU7602331082A SU569531A1 (en) 1976-03-09 1976-03-09 Method of preparing sodium sulphide

Publications (1)

Publication Number Publication Date
SU569531A1 true SU569531A1 (en) 1977-08-25

Family

ID=20651139

Family Applications (1)

Application Number Title Priority Date Filing Date
SU7602331082A SU569531A1 (en) 1976-03-09 1976-03-09 Method of preparing sodium sulphide

Country Status (1)

Country Link
SU (1) SU569531A1 (en)

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