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2 779 661

(13)

(51)

IPC

C01D3/08(2006-01-01)

C01D3/24(2006-01-01)

C22B26/10(2006-01-01)

(21) (22)

Application

2021135944, 2021-12-07

(24)

Start date

2021-12-07

(22)

Actual filing date

2021-12-07

(45)

Published

2022-09-12

(72)

Inventor

Poilov Vladimir ZotovichKuzminykh Konstantin GennadevichAliferova Svetlana Nikolaevna

(73)

Holder

Federalnoe Gosudarstvennoe Avtonomnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniia Natsionalnyi Issledovatelskii Politekhnicheskii Universitet»

METHOD FOR OBTAINING POTASSIUM CHLORIDE FROM SILVINITE ORE Russian patent published in 2022 - IPC C01D3/08 C01D3/24 C22B26/10

Abstract RU 2779661 C1

FIELD: chemical industry.

SUBSTANCE: invention relates to the production of potassium chloride by hot leaching technology by the method for dissolution of sylvinite ore and crystallization of KC1 and can be used in the chemical industry to improve the commodity characteristics of the product. The production of potassium chloride from sylvinite ore includes grinding, dissolution of the ore to obtain a saturated solution, which is crystallized in multi-stage vacuum crystallizers, followed by thickening and crystallization, after which the resulting potassium chloride is dried. After thickening of the crystallization product, an acute unsaturated steam with a temperature of at least 200°C and a flow rate of at least 8 kg/t of condensed pulp is introduced into the pulp.

EFFECT: method makes it possible to increase the quality of the finished product while reducing the impurity content and the dust fraction.

1 cl, 1 tbl, 6 ex

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RU 2 779 661 C1

Authors

Poilov Vladimir Zotovich

Kuzminykh Konstantin Gennadevich

Aliferova Svetlana Nikolaevna

Dates

2022-09-12—Published

2021-12-07—Filed