Method for preparing strontium chloride by using strontium slag

A strontium chloride and strontium slag technology, applied in the direction of calcium/strontium/barium chloride, calcium/strontium/barium halide, etc., can solve the problems of strontium slag treatment difficulties, environmental pollution, etc., and achieve easy control of process parameters and equipment The effect of low requirements and convenient operation

Inactive Publication Date: 2014-09-24
MINLE FUYUAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, strontium slag is difficult to deal with, long-term stacking pollutes the environment and other problems, so it is of great significance to find a way to deal with strontium slag, comprehensive utilization of resources and environmental protection

Method used

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  • Method for preparing strontium chloride by using strontium slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) first strontium slag is ground, and then the ground strontium slag is passed through a 100-mesh sieve;

[0025] (2) adding hydrochloric acid to the sieved strontium slag powder, the addition of hydrochloric acid is 1.25 times of the weight of the strontium slag powder, then stirred, reacted for 2h, and filtered after the reaction to obtain clear liquid;

[0026] (3) add sulfuric acid to the clear liquid that step (2) makes, detect the barium content in the strontium slag, add sulfuric acid according to 1.2 times of the theoretical value of sulfuric acid for barium removal, then stir, and react for 1h;

[0027] (4) After the reaction is over, add strontium hydroxide to the solution, adjust the pH of the solution to 6.5, let it stand, and wait for complete precipitation, then filter to obtain the filtrate;

[0028] (5) Step (4) is heated, evaporated and crystallized to obtain strontium chloride.

Embodiment 2

[0030] (1) first strontium slag is ground, and then the ground strontium slag is passed through a 100-mesh sieve;

[0031] (2) Adding hydrochloric acid to the strontium slag powder after sieving, the addition of hydrochloric acid is 1.25 times of the weight of the strontium slag powder, then stir, react for 4h, filter after the reaction to obtain clear liquid;

[0032] (3) add sulfuric acid to the clear liquid that step (2) makes, detect the barium content in the strontium slag, add sulfuric acid according to 1.5 times of the theoretical value of sulfuric acid for barium removal, then stir, and react for 2h;

[0033] (4) After the reaction is over, add strontium hydroxide to the solution, adjust the pH of the solution to 7.5, let it stand, and wait for complete precipitation, then filter to obtain the filtrate;

[0034] (5) Step (4) is heated, evaporated and crystallized to obtain strontium chloride.

Embodiment 3

[0036] (1) first strontium slag is ground, and then the ground strontium slag is passed through a 100-mesh sieve;

[0037] (2) adding hydrochloric acid to the sieved strontium slag powder, the addition of hydrochloric acid is 1.25 times of the weight of the strontium slag powder, then stirred, reacted for 3h, and filtered after the reaction to obtain clear liquid;

[0038] (3) add sulfuric acid to the clear liquid that step (2) makes, detect the barium content in the strontium slag, add sulfuric acid according to 1.3 times of the theoretical value of sulfuric acid used for barium removal, then stir, and react for 1.5h;

[0039] (4) After the reaction is over, add strontium hydroxide to the solution, adjust the pH of the solution to 7.0, let it stand, and wait for complete precipitation, then filter to obtain the filtrate;

[0040] (5) Step (4) is heated, evaporated and crystallized to obtain strontium chloride.

[0041] According to the statistics of the company's preliminary...

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Abstract

The invention discloses a method for preparing strontium chloride by using strontium slag. The method specifically comprises the following steps: (1), firstly grinding the strontium slag into powder, then sieving the ground strontium slag through a 100-mesh sieve; (2), adding hydrochloric acid in the sieved strontium slag powder, wherein the weight ratio of hydrochloric acid to the strontium slag powder is 1.25:1; then stirring, reacting for 2-4h, filtering to obtain supernate after the reaction is ended; (3), adding sulfuric acid in the supernate prepared in the step (2), stirring, and reacting for 1-2h; (4), after the reaction is ended, adding strontium hydroxide in the solution, regulating pH of the solution to 6.5-7.5, standing, and filtering to obtain filtrate after completely settling; and (5), heating, evaporating and crystallizing the filtrate obtained in the step (4) to obtain the strontium chloride. The method provided by the invention has the advantages of simplicity, low requirement on equipment, safety, environment friendliness, high yield, and the like.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for preparing strontium chloride by utilizing strontium slag. Background technique [0002] Strontium slag is the waste slag produced in the process of producing metal strontium. The main content is strontium, so it is collectively called strontium slag. Strontium slag is collectively sealed and stacked. [0003] At present, strontium slag is difficult to deal with, long-term stacking pollutes the environment and other problems, so it is of great significance to find a way to deal with strontium slag, comprehensive utilization of resources and environmental protection. Contents of the invention [0004] The invention provides a method for preparing strontium chloride by utilizing strontium slag. [0005] The present invention adopts following technical scheme: [0006] The concrete steps of the method utilizing strontium slag to prepare strontium chloride o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/24
Inventor 马文清汤如赟王之中穆好贵刘悦文武英
Owner MINLE FUYUAN CHEM
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