Process for producing albite

Abstract

The invention discloses a process for producing albite. The process comprises steps of: preparing materials according to weight percentages of raw materials, wherein the raw materials comprises, by weight, 55% of albite and 45% of potash feldspar; milling the prepared raw materials, wherein grain sizes of powder are controlled as follow: powder particles with grain sizes less than 4 microns are present in an amount of less than 10 wt.%, based on the total weight of powder particles, powder particles with grain sizes greater than 22 microns are present in an amount of greater than 50 wt.%, based on the total weight of the powder particles, and powder particles with grain sizes less than 75 microns are present in an amount of greater than 97 wt.%, based on the total weight of the powder particles; removing impurities and mixing slurry by adopting a flocculating agent, wherein the mass concentration of the slurry is in a range from 34.5% to 35.5 %; and filter pressing and dehydrating the slurry to obtain albite powder with a water content less than 15% at last. By selecting the raw material formula, the particle sizes of raw materials and the flocculating agent, and controlling the concentration of the slurry, the process for producing albite provided by the invention can prepare an albite product with a water content less than 15% after filter pressing and dehydrating, and cost of production is reduced by 210 yuan / ton.

Description

technical field [0001] The invention relates to a beneficiation method, in particular to a production method of ultrafine albite with a moisture content of less than 15%. Background technique [0002] Albite is a common feldspar mineral, sodium aluminosilicate (NaAlSi 3 o 8 ), which is the raw material for making glass and ceramics. The preparation of high-grade ceramic glazes has very strict requirements on ultra-fine albite powder. The particle size of the powder should be fine and the particle size distribution should be concentrated. The impurity content in the powder should be low; with the implementation of clean production in the ceramic industry, in order to To reduce dust pollution and facilitate bulk transportation, powdered ceramic raw materials require less than 15% water and the powder should not have agglomeration. In the existing production technology of ultrafine albite powder, the process is complicated and the production cost is high. The production ...

AI Technical Summary

Problems solved by technology

In the existing production technology of ultrafine albite powder, the process is complicated and the production cost is high. The production process of ultrafine albite powder includes grinding, impurity removal, iron removal, precipitation and other processes. The lowest content can only be reduced to less than 25%, and some products will be lost with water during the precipitation process; when dehydration is carried out by conventional pressure filtration or vacuum dehydration, because part of the albite ore is weathered and easy to hydrophilic, When the powder is too fine, it is difficult to reduce the water content below 22%, and the dehydrated powder will be in the form of muddy lumps, which will have a great impact on transportation and use.

Therefore, it is often necessary to dry during the preparation process, and add water after drying; resulting in high dehydration costs and low economic benefits for enterprises

Images