A method of washing powder or powder materials

Abstract

The invention discloses a method and equipment for efficiently washing powder or powder materials. The method comprises the following steps that washing liquid and powder or powder materials to be washed are added into washing equipment, in addition, inert solid particulate matter media are added into the washing equipment, the mechanical force is utilized for realizing the relative movement between the powder or powder materials to be washed and the inert solid particulate matter media, the inert solid particulate matter media generate the kneading, rolling compaction, stirring and dispersion effects on the powder or powder materials to be washed, the mass transfer efficiency and the velocity between the powder or powder materials and the washing liquid are improved, and soluble salt carried by the powder or powder materials can be fast dissolved into the washing liquid. The equipment comprises a stirring tank, a settlement separating device and the like, wherein the stirring tank carries the powder or powder materials to be washed, the washing liquid and the inert solid particulate matter media, and the settlement separating device is communicated with the stirring tank. The method and the equipment have the advantages that the operation is simple, the washing efficiency is high, the washing effect is good, the consumption of the washing liquid is low, the washing energy consumption is low, and meanwhile, the continuous washing and the intermittent washing can be carried out.

Description

technical field [0001] The invention relates to washing of powder or powder materials, in particular to a method for efficiently washing powder or powder materials by an intervention method. Background technique [0002] Washing of powder or powder materials is a problem that must be faced in the production of various insoluble metal salts, metal oxides or insoluble non-metal salts, non-metal oxides or other insoluble powder materials. Liquid phase deposition reaction is the main method for producing various insoluble powder materials. In order to obtain pure products, the soluble salt absorbed by powder or powder materials must be washed and removed by washing. [0003] At present, the washing of powder or powder materials is usually performed by slurry washing or washing by filtering equipment. Slurry washing is to put the powder or powder material to be washed into the stirring tank, then add washing water, start stirring, carry out stirring washing, and then filter, and...

AI Technical Summary

Problems solved by technology

However, for powder or powder materials with fine particle size or difficult to filter, there are still problems of low washing efficiency, large amount of washing water, and high washing energy consumption.

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