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Method for extracting lithium from fly ash

A technology for fly ash and lithium extraction, applied in the direction of improving process efficiency, can solve problems such as inability to guarantee lithium purity, increase production costs, and incompatibility with reuse, and achieve the effects of avoiding waste, saving production costs, and increasing benefits

Inactive Publication Date: 2020-01-03
广西中煤地质有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a method for extracting lithium from fly ash, which has the advantages of being able to avoid waste of resources, save production costs, and increase the benefits of the enterprise, and solves the problems obtained by the current lithium extraction method. There are no corresponding recycling measures for the sediment, which does not conform to the concept of reuse, resulting in waste of resources, increased production costs, and ultimately the problem that the purity of lithium cannot be guaranteed

Method used

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Embodiment Construction

[0027] The invention discloses a method for extracting lithium from fly ash. Those skilled in the art can refer to the content of this article and appropriately improve the process parameters to realize it. It should be pointed out that all similar replacements and modifications are obvious to those skilled in the art, and they are all considered to be included in the present invention. The method for extracting lithium of the present invention has been described through preferred embodiments, and relevant personnel can obviously modify or appropriately change and combine the method for extracting lithium described herein without departing from the content, spirit and scope of the present invention to achieve and Apply the technology of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. Below in ...

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Abstract

The invention relates to the technical field of lithium extraction from fly ash, and discloses a method for extracting lithium from fly ash. The method comprises the first step of taking of fly ash, the second step of leaching treatment, the third step of leachate acidification, the fourth step of filtering treatment, the fifth step of heating and crystallization, the sixth step of drying treatment and the seventh step of adding of carbon dioxide. By means of method for extracting lithium from fly ash, waste of resources can be avoided, the production cost is saved, and enterprise benefits areincreased.

Description

technical field [0001] The invention relates to the technical field of extracting lithium from fly ash, in particular to a method for extracting lithium from fly ash. Background technique [0002] With the development of my country's coal power industry, the output of fly ash has increased rapidly year by year, so the utilization of fly ash has become an urgent issue of comprehensive utilization of environmental protection resources. In recent years, with the gradual deepening of research on fly ash, especially high-alumina fly ash, it was found that coal and fly ash in Inner Mongolia and Shanxi and other places contain a relatively high content of lithium, and the content of lithium oxide in some fly ash As high as 8000g / t, it has reached the industrial grade of pegmatite independent lithium ore, and has a high extraction value. [0003] Lithium is the lightest metal in nature and has extremely strong electrochemical activity. Its metals and compounds are widely used in gl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B26/12C22B7/02
CPCC22B7/006C22B7/02C22B26/12Y02P10/20
Inventor 廖家隆韦梦蝶梁兴东唐胜群潘艳明
Owner 广西中煤地质有限责任公司
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