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Technology for continuously producing cesium rubidium alum and aluminum potassium sulfate

A technology of cesium rubidium alum and potassium alum, which is applied in the field of continuous production of cesium rubidium alum and potassium alum, can solve the problems of high labor consumption, limited output, inability to carry out mass automation and industrialized production, and achieve simple equipment structure and avoid Blocking pipes in a large area and realizing the effect of large-scale industrial production

Inactive Publication Date: 2016-03-02
CHANGSHA DESIGN & RES INST OF CHEM IND MIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing intermittent production technology cannot carry out large-scale automated and industrialized production, so the labor consumption is large and the output is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045](1) Two-effect vacuum cooling crystallization: the sulfate mother liquor containing cesium, rubidium, potassium, and aluminum (the mass concentrations of cesium, rubidium, potassium, and aluminum components are respectively 2.60wt%, 0.08wt%, 1.25wt%, 1.51 wt%, the temperature of the mother liquor is 110°C), and the second-effect vacuum cooling crystallization is carried out at 346kg / h to obtain cesium rubidium alum crystal slurry; among them, the first-effect vacuum cooling crystallization temperature is 55°C, and the vacuum degree is 0.016MPa (A) (the The "A" at the place means absolute pressure, the same below); the crystallization temperature of the second effect vacuum cooling is 45°C, and the vacuum degree is 0.0096MPa (A);

[0046] (2) cesium rubidium alum crystal slurry centrifugal separation: cesium rubidium alum crystal slurry obtained in step (1) is centrifuged to obtain crude cesium rubidium alum 55kg / h and mother liquor (KAl(SO 4 ) 2 12H 2 O content is 12.5...

Embodiment 2

[0051] (1) Three-effect vacuum cooling crystallization: the sulfate mother liquor containing cesium, rubidium, potassium, and aluminum (the mass concentrations of cesium, rubidium, potassium, and aluminum components are respectively 2.50wt%, 0.07wt%, 1.26wt%, 1.60 wt%, the temperature of the mother liquor is 116°C) at 770kg / h for three-effect vacuum cooling crystallization to obtain cesium rubidium alum crystal slurry; among them, the first-effect vacuum cooling crystallization temperature is 85°C, and the vacuum degree is 0.058MPa (A); The second-effect vacuum cooling crystallization temperature is 60°C, and the vacuum degree is 0.020MPa (A); the third-effect vacuum cooling crystallization final temperature is 35°C, and the vacuum degree is 0.0056MPa (A);

[0052] (2) cesium rubidium alum crystal slurry centrifugal separation: cesium rubidium alum crystal slurry obtained in step (1) was centrifuged to obtain crude cesium rubidium alum 121.4kg / h and mother liquor (KAl(SO 4 ) ...

Embodiment 3

[0057] (1) Three-effect vacuum cooling crystallization: the sulfate mother liquor containing cesium, rubidium, potassium, and aluminum (the mass concentrations of cesium, rubidium, potassium, and aluminum components are respectively 0.09wt%, 0.3wt%, 2.16wt%, 6.10 wt%, the temperature of the mother liquor is 120°C) with 750kg / h for three-effect vacuum cooling crystallization to obtain cesium rubidium alum crystal slurry; among them, the first-effect vacuum cooling crystallization temperature is 80°C, and the vacuum degree is 0.047MPa (A); The second-effect vacuum cooling crystallization temperature is 52°C, and the vacuum degree is 0.014MPa (A); the third-effect vacuum cooling crystallization final temperature is 40°C, and the vacuum degree is 0.0074MPa (A);

[0058] (2) cesium rubidium alum crystal slurry centrifugation: cesium rubidium alum crystal slurry obtained in step (1) is centrifuged to obtain crude cesium rubidium alum 115kg / h and mother liquor (KAl(SO 4 ) 2 12H 2 O...

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Abstract

A technology for continuously producing cesium rubidium alum and aluminum potassium sulfate comprises the following steps: (1) performing single / multiple effect vacuum cooling crystallization on a mother solution containing cesium, rubidium, potassium and aluminium, so as to obtain a cesium rubidium alum crystal slurry; (2) performing centrifugation separation, so as to obtain crude cesium rubidium alum and a mother liquid; (3) performing thermal dissolving, recrystallization and centrifugation separation on crude cesium rubidium alum, so as to obtain the cesium rubidium alum product; (4) performing multi-effect forced circulating refrigeration crystallization on the mother liquid with the aluminum potassium sulfate content of 6 wt% or more according to a forward flow, so as to obtain a aluminum potassium sulfate crystal slurry; and (5) performing centrifugation separation and drying, so as to obtain the aluminum potassium sulfate product. The technology realized continuous large-batch production, the product quality is stable, yield is high, the purity of obtained cesium rubidium alum is 95% or more, and the purity of aluminum potassium sulfate is 97% or more. The solid concentration of each-stage crystallizer is easy to control. Cold energy can be fully utilized, and the energy-saving synergic effect can be reached. The technology effectively prevents large-area obstruction of pipes and obstruction of equipment. Equipment structure is simple, operation and maintenance are convenient, automatic control is easy to realize, and large-scale industrial production can be realized.

Description

technical field [0001] The invention relates to a process for continuously producing cesium rubidium alum and potassium alum, in particular to a process for continuously producing cesium rubidium alum and potassium alum with sulfuric acid decomposition liquid of minerals containing cesium, rubidium, potassium and aluminum as raw materials. Background technique [0002] The production method of existing cesium rubidium alum has following two kinds: [0003] (1) Cesium garnet sulfuric acid decomposition method: [0004] That is, the extraction method of treating cesium garnet with sulfuric acid to produce aluminum rubidium sulfate dodecahydrate. Cesium garnet is a kind of aluminosilicate with a mass content of 20-30% Cs, and its composition is 2Cs 2 O·2Al 2 o 3 9SiO2 2 ·H 2 O, is the main cesium extraction raw material. The method is to mix sulfuric acid with finely ground cesium garnet concentrate. Since the cesium garnet concentrate contains sufficient alumina, after ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/76
CPCC01F7/762C01P2006/80Y02P20/10
Inventor 申军杨官涛戴斌联徐盛袁剑鹏胡赞彭建忠刘方龙曹伟宁晚云
Owner CHANGSHA DESIGN & RES INST OF CHEM IND MIN
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