A method for producing illite powder from illite clay ore

Abstract

The invention belongs to the technical field of chemical engineering and technology, and discloses a method for producing illite powder with illite clay ore. The method includes the steps that firstly, illite clay ore is taken and put into an illite clay ore hydraulic pulping machine to be smashed through high-pressure water impact, large-particle impurities in the illite clay ore are separated, and small-particle illite pulp is obtained; secondly, the illite pulp is put into a plate-and-frame filter to obtain wet powder with the water content of 20-30%, and the wet powder is dried through a dryer to obtain dry powder; or, the illite pulp is put into a multi-outlet cyclone hydraulic separator to obtain pulp of different particle sizes, and then the powder material is obtained through a membrane separator, a plate-and-frame filter and drying equipment. According to the method, as advanced equipment is used, the technological process is more reasonable, more compact, smaller in energy consumption and lower in environmental pollution, and production benefits can be increased with higher efficiency.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering and technology, and in particular relates to a process flow for producing illite powder from illite clay ore. Background technique [0002] Illite has the characteristics of smooth, bright, soft, good insulation, heat resistance and high hiding rate, and is widely used in papermaking, plastics, rubber, paint, cosmetics, cable insulation materials, ceramics and other industrial fields. Illite is also rich in minerals such as potassium and aluminum, and its chemical processing can produce industrial products such as potash fertilizer, activated alumina and activated silica powder. And because illite powder has small particle size, large specific surface area, and unique Zeng bond structure, it can be used as a low-cost adsorbent in environmental fields such as cyanobacteria, nuclear pollution, and industrial wastewater. [0003] Illite mainly exists in nature in two forms, one is a har...

AI Technical Summary

Problems solved by technology

However, there are many problems in this process. One is that illite powder with higher purity cannot be obtained.

When the machine is crushed, all the ore soil entering the crusher cannot be crushed selectively, which makes it difficult for the produced illite powder to meet the needs of some products with higher purity requirements.

Second, the weathering or air-drying site in the process will be very large

First, the material should be crushed before the primary mixing. Otherwise, if the oversized clay ore is loaded into the mixing and beating machine, the machine will not be able to carry it. In severe cases, the motor will be burned out or the knuckle will be biased, or the stirring paddle will be broken, and the production will no longer be possible.

Second, there are stones in the clay mine, and the blades of the mixing paddles are severely worn. Sometimes, the thick and strong paddles are worn away in less than a month.

Sometimes the blocky material on the upper part of the third filter cannot be washed cleanly, and 5-10% of the illite will not be washed off, resulting in waste of raw materials for powder making

Fourth, the particle size range of illite powder is relatively large, and there are many impurities, especially silicate with fine particles, and the product purity is not high

[0010] There are precedents in the production of the above three processes, and each has advantages and disadvantages. The biggest disadvantage is the problem of product purity.

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