A kind of low-grade diatom original earth purification and enrichment process

Abstract

The invention discloses a low-grade raw diatomite purification and enrichment technology, which comprises the steps of firstly dissociating low-grade raw diatomite through a strong smashing machine, conveying to a rotary drum dryer, drying through hot air at the temperature of 800 DEG C, and sorting through a vibrating screen; combining one part of materials separated from ore fragments and supplemented hot air at the temperature of 350 DEG C to allow the mixture to enter a drying tower for drying; mixing the other part with dried materials directly discharged from the drying tower and the supplemented hot air, conveying the mixture through a pneumatic conveying pulverizer to a two-stage classifier for classification for two times, passing materials discharged from the upper part of the classifier through a 1<#> adjustable cyclone separator, and conveying the materials to a purified diatomite storage silo. According to the low-grade raw diatomite purification and enrichment technology provided by the invention, a continuous drying method is adopted for purification, the hot air at the temperature of 300 to 800 DEG C is used to continuously dry, smash and sort the materials, and by use of a pneumatic conveying method, classified enrichment is performed, so the low-grade raw diatomite is converted into economic purified diatomite containing 80 to 86 percent of diatomite components.

Description

technical field [0001] The invention relates to the technical field of material separation and purification, in particular to a purification and enrichment process of low-grade diatom raw soil. Background technique [0002] Mineral dressing and purification is an important link in the deep processing of diatomite and other non-metallic ores. As we all know, in my country, natural high-purity diatomite resources are less, and most of them are distributed in Linjiang City, Jilin Province. With the depletion of high-quality raw diatom soil resources and the continuous improvement of high-tech application fields for the properties of diatomite products, how to economically and rationally use the lean ore resources with large reserves to enrich the content of diatoms, replace the inferior with the superior, Value-added processing has become the main subject of exploration and research and development by technicians in the industry. [0003] The secondary and tertiary diatom raw ...

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Problems solved by technology

Because of its long process flow, complex process and various equipment, low production efficiency, high water consumption and power consumption, coupled with the use of additives (theophylline, water glass), and the low level of mechanization, the labor intensity of workers is high. Affected by factors such as a large number of personnel, the unit production cost of finished refined soil is relatively high

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