含锶废渣制备氯化锶新工艺研究

doi:10.11962/1006-4990.2019-0105

Abstract

Abstract:

At present,the waste residue produced by factories producing strontium carbonate and other strontium salts contains up to 10%（mass fraction） strontium,which is not used and causes both environmental pollution and resource waste.With these strontium waste as raw material,high economic value of strontium chloride products was developed.The process route was determined through experiments,and the effects of the extraction time and the extraction temperature on the extraction rate were investigated respectively.The optimum technological conditions were determined by single factor experiment as follows：the leaching time was 4 h and the leaching temperature was 80 ℃.The method of removing impurities in the strontium chloride solution was studied,and the problem of separating magnesium and calcium from a large amount of strontium was solved.The final test samples reached the quality requirements of the products.

Key words: strontium residue, hydrochloric acid, strontium chloride

CLC Number:

TQ132.33

Li Chang′e,Li Guoting. Study on new technology of preparing strontium chloride from strontium-containing waste residue[J]. Inorganic Chemicals Industry, 2020, 52(1): 79-81.

指标名称	w （氯化锶）	w （碱金属）	w （硫酸根）	w （铁）	w（水不溶物）
企业标准^[6]	≥99.0	≤0.6	≤0.01	≤0.005	≤0.05
实验结果	99.2	0.5	0.01	0.003	0.02

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National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on new technology of preparing strontium chloride from strontium-containing waste residue

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