Method and device for producing crystal anhydrous lithium chloride

A production method, lithium chloride technology, applied in the direction of lithium halide, etc., can solve the problems of large equipment footprint, poor site environment, cumbersome operation, etc., and achieve the effects of improved production efficiency, reliable product quality, and convenient operation

Active Publication Date: 2011-05-18
GANFENG LITHIUM CO LTD
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  • Abstract
  • Description
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Problems solved by technology

The process is discontinuous in production, cumbersome in operation, high in energy consumption, low in recovery rate of lithium chloride products, large in area of ​​equipment, poor on-site environment, and high labor intensity of workers

Method used

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  • Method and device for producing crystal anhydrous lithium chloride
  • Method and device for producing crystal anhydrous lithium chloride
  • Method and device for producing crystal anhydrous lithium chloride

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] A kind of crystalline anhydrous lithium chloride production method of the present invention, please refer to Fig. 1, concrete steps are:

[0029] a. Solution mixing: Lithium chloride purification solution and lithium chloride magma separation mother liquor are mixed in feed tank 2, in this step the mother liquor that contains the solution of lithium chloride and the separation of lithium chloride magma separation is in the mother liquor of circulation Mixing in the trough;

[0030] b. Forced circulation evaporative crystallization: pump the mixed solution of lithium chloride solution and lithium chloride magma separation mother liquor into the forced circulation evaporative crystallizer 3 and circulate evaporative crystallization at 170°C-180°C to obtain and discharge the magma concentration It is a crystal slurry of 30%-35% solid lithium chloride. Th...

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Abstract

The present invention provides a preparing method of crystallizing lithium chloride, including following steps, mixing lithium chloride purifying solution and separating mother solution, continuously pump circulation evaporating crystallization, continuous centrifugation and drying after thickening, a cooling packing step. The crystallizing lithium chloride preparing method of the invention is continuous of each steps, lithium chloride crystal mush thickening and continuous centrifugation lithium chloride mother solution are mixed with lithium chloride purifying solution, then entering pump circulation evaporating crystallization to crystallize, energy consumption per unit product of the product device is 20% lower than gap production device, the product recovery rate of lithium chloride increases 2%.

Description

technical field [0001] The present invention relates to a method for producing crystalline anhydrous lithium chloride, and also relates to a device used in the aforementioned method for producing crystalline anhydrous lithium chloride. Background technique [0002] At present, most of the production process of crystalline anhydrous lithium chloride adopts the mode of batch unit operation, and the process is roughly divided into the following parts: Lithium chloride raw material liquid is first filtered by impurity removal, then concentrated and crystallized by the concentration pot, concentrated crystallization Centrifugal separation of crystal slurry is performed intermittently with a three-legged top-discharging centrifuge. Lithium chloride is dried and cooled in batches for packaging. After the mother liquor is cooled, it is mixed with lithium chloride raw material and hydraulically filtered to remove impurities. The process has discontinuous production, cumbersome operat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01D15/04
Inventor 李良彬黄学武胡耐根罗时学曾辉如
Owner GANFENG LITHIUM CO LTD
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