Process and tool for preparing sodium metasilicate pentahydrate by utilizing crystallization and crushing method

Abstract

The invention discloses a process and a tool for preparing sodium metasilicate pentahydrate by utilizing a crystallization and crushing method. The tool comprises a raw material storage system, a batching system, a vacuum concentration system, a cooling and crystallizing system, a pulverizing system, a packaging and weight checking system and a control system, wherein a first feeding pipeline is arranged between the raw material storage system and the batching system; a second feeding pipeline is arranged between the batching system and the vacuum concentration system; a third feeding pipeline is arranged between the vacuum concentration system and the cooling crystallization system; a fourth feeding pipeline is arranged between the cooling and crystallizing system and the pulverizing system; the diameter of the fourth feeding pipeline is larger than the diameter of the first feeding pipeline, the diameter of the second feeding pipeline and the diameter of the third feeding pipeline; the raw material storage system comprises a storage box body; and supporting legs, the first feeding pipeline, the third feeding pipeline and the fourth feeding pipeline are arranged on the lower portion of the storage box body. The method has the beneficial effects that the anhydrous sodium metasilicate is prepared by using a method for replacing a traditional mother liquor circulation method and a continuous granulation method, preparation efficiency is improved, and cost is reduced.

Description

technical field [0001] The invention relates to the technical field of sodium metasilicate pentahydrate, in particular to a process and tooling for preparing sodium metasilicate pentahydrate by using a crystal crushing method. Background technique [0002] The traditional sodium metasilicate pentahydrate mainly consists of mother liquor circulation method and continuous granulation method. The mother liquor circulation method consumes a large amount of cooling water. After the mother liquor is recycled for many times, the product turns yellow and black, and the product crystal grains show that there is a lot of adsorbed water. , Once the packaging is damaged, the product is easy to agglomerate, and it will produce a salt bridge effect after being mixed with other raw materials, and the mixture will be integrated, and the development will affect the use. Continuous granulation needs to be roasted to complete the production of the product, the energy consumption is relatively ...

AI Technical Summary

Problems solved by technology

[0002] The traditional sodium metasilicate pentahydrate mainly consists of mother liquor circulation method and continuous granulation method. The mother liquor circulation method consumes a large amount of cooling water. After the mother liquor is recycled for many times, the product turns yellow and black, and the product crystal grains show that there is a lot of adsorbed water. , Once the packaging is damaged, the product is easy to agglomerate, and it will produce a salt bridge effect after mixing with other raw materials, and the mixture will be integrated, which will affect the use of the product.

Continuous granulation needs to be roasted to complete the production of the product, the energy consumption is relatively high, and the cost of waste gas emission control is high. The sodium metasilicate pentahydrate produced by these two processes has low cost performance in the ceramic debonding agent industry. lacks competitiveness

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