RU95114712A - METHOD FOR PRODUCING SODIUM TRIPOLYPHOSPHATE - Google Patents

METHOD FOR PRODUCING SODIUM TRIPOLYPHOSPHATE

Info

Publication number
RU95114712A
RU95114712A RU95114712/25A RU95114712A RU95114712A RU 95114712 A RU95114712 A RU 95114712A RU 95114712/25 A RU95114712/25 A RU 95114712/25A RU 95114712 A RU95114712 A RU 95114712A RU 95114712 A RU95114712 A RU 95114712A
Authority
RU
Russia
Prior art keywords
sodium
sodium tripolyphosphate
tripolyphosphate
producing sodium
per
Prior art date
Application number
RU95114712/25A
Other languages
Russian (ru)
Other versions
RU2159212C2 (en
Inventor
А.А. Кузнецов
Б.Д. Гуллер
М.А. Шапкин
Е.В. Горбачев
В.В. Буксеев
Original Assignee
Акционерное общество закрытого типа "Невохим"
Filing date
Publication date
Application filed by Акционерное общество закрытого типа "Невохим" filed Critical Акционерное общество закрытого типа "Невохим"
Priority to RU95114712/12A priority Critical patent/RU2159212C2/en
Priority claimed from RU95114712/12A external-priority patent/RU2159212C2/en
Publication of RU95114712A publication Critical patent/RU95114712A/en
Application granted granted Critical
Publication of RU2159212C2 publication Critical patent/RU2159212C2/en

Links

Claims (2)

1. Способ получения триполифосфата натрия, включающий нейтрализацию фосфорной кислоты кальцинированной содой до мольного отношения Na2O : P2O5 = 1,63 - 1,71 распыливание образовавшегося раствора на частицы ретурной смеси ортофосфатов и/или триполифосфата с последующей сушкой и прокалкой гранул во вращающихся печах при температуре 100 - 450oС и их дроблением, отличающийся тем, что в раствор перед распыливанием вводят пирофосфаг натрия в количестве 0,5 - 4 мас.ч. на 100 мас.ч. готового продукта.1. A method of producing sodium tripolyphosphate, including the neutralization of phosphoric acid with soda ash to a molar ratio of Na 2 O: P 2 O 5 = 1.63 - 1.71 spraying the resulting solution onto particles of a retur mixture of orthophosphates and / or tripolyphosphate, followed by drying and calcination of the granules in rotary kilns at a temperature of 100 - 450 o C and their crushing, characterized in that before spraying is injected sodium pyrophosphage in an amount of 0.5 to 4 wt.h. per 100 parts by weight finished product. 2. Способ по п. 1, отличающийся тем, что одновременно с пирофосфатом натрия вводят пирофосфат калия, взятый в количестве 0,05 - 0,1 мас.ч. на 1 мас.ч. пирофосфата натрия. 2. The method according to p. 1, characterized in that at the same time as sodium pyrophosphate, potassium pyrophosphate is introduced, taken in an amount of 0.05 - 0.1 wt.h. per 1 part by weight sodium pyrophosphate.
RU95114712/12A 1995-08-15 1995-08-15 Method of preparing sodium tripolyphosphate RU2159212C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU95114712/12A RU2159212C2 (en) 1995-08-15 1995-08-15 Method of preparing sodium tripolyphosphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU95114712/12A RU2159212C2 (en) 1995-08-15 1995-08-15 Method of preparing sodium tripolyphosphate

Publications (2)

Publication Number Publication Date
RU95114712A true RU95114712A (en) 1997-10-10
RU2159212C2 RU2159212C2 (en) 2000-11-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU95114712/12A RU2159212C2 (en) 1995-08-15 1995-08-15 Method of preparing sodium tripolyphosphate

Country Status (1)

Country Link
RU (1) RU2159212C2 (en)

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