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Process for producing lithium carbonate by mixing spodumene and salt lake ore

A technology of spodumene and lithium carbonate, applied in the direction of lithium carbonate;/acid carbonate, etc., can solve the problems of insufficient lithium ore resources, insufficient quality of products produced by salt lake ore resources, etc.

Inactive Publication Date: 2021-05-07
广西雅保锂业有限公司
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcoming of prior art, provide a kind of technology that mixes spodumene and salt lake ore to produce lithium carbonate, this technology mixes spodumene and salt lake ore to produce lithium carbonate, solves the plight of insufficient lithium ore resources , increase the risk of production lines resisting insufficient resources, and at the same time solve the problem of low quality products produced by salt lake ore resources

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  • Process for producing lithium carbonate by mixing spodumene and salt lake ore

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Embodiment Construction

[0031]The invention is further described below with reference to the accompanying drawings, but the scope of the invention is not limited to the following.

[0032]Such asfigure 1As shown, a process for mixing lithium carbonate with lithium glow and salt lake ore, including the following steps:

[0033]S1, sequentially paste the lithium, cool, fine mill, add the acid to the acid, cooled, the product to be added to ≤90 ° C, and the slurry solid content is 10% to 70%, the calcination temperature is 950 ~ 1200 ° C; the particle size of fine mill is 200 mesh; when the acid reacture is added, the concentration of 98% sulfuric acid, the acid material ratio = 2 to 4: 1, and the acid is added to 60 ° C or less;

[0034]S2, adding calcium carbonate slurry to the slurry obtained in step S1, stirring the calcium carbonate, the calcium carbonate slurry is carbonate and water, the solid content is 10% to 55%, and the temperature in the leaching tank is ≤60 ° C, pH is 5.5 ~ 6, after 20 minutes, the calciu...

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Abstract

The invention relates to the technical field of lithium carbonate production, in particular to a process for producing lithium carbonate by mixing spodumene and salt lake ore, which comprises the following steps: sequentially calcining, cooling, finely grinding, adding acid to react, cooling, mixing slurry, leaching, squeezing and separating by a filter press, adding salt lake ore, purifying, filtering, causticizing, freezing to separate sodium sulfate, evaporating and concentrating, carbonizing, centrifugally drying, crushing by air flow and the like. According to the process, the mixed spodumene and salt lake ore are used as raw materials, the content of Li2SO4.H2O in the salt lake ore reaches 80.1-92.1%, the average content is 85.1%, the spodumene and the salt lake ore are mixed to produce lithium hydroxide monohydrate, the dilemma of insufficient lithium ore resources is solved, the risk of insufficient resistance resources of a production line is increased, and meanwhile, the problem of low quality of lithium hydroxide produced from salt lake ore resources is solved.

Description

Technical field[0001]The present invention relates to the technical field of lithium carbonate, in particular, a process of mixing lithium carbonate with lithium glow and salt lake ore.Background technique[0002]Lithium carbonate can be used in ceramic, drugs, catalysts, and the like. Commonly used lithium ion batteries. As the positive material of the lithium ion battery, the high pure grade carbonate used in the electrolyte is increasingly attached to people. The current production of lithium carbonate has lithium carbonate, salted lithium, and lithium salt lakes from seawater. The process is based on lithium glow and salt lake ore as a raw material, which is highly temperature calcined, cooled, ball milling, acidified roasting, cooling, gel, leaching press separation, frozen separation of sodium sulfate, evaporation, carbonization, centrifugal drying and other process steps to produce lithium carbonate .[0003]However, the lithium-glutinous stone resources are not need to find new ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D15/08
CPCC01D15/08
Inventor 何开茂何东利伍震洲汪梨超江莹代道和杨贤丽谭培渊黄剑新
Owner 广西雅保锂业有限公司
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