Bentonite preparation process with short sand mixing time

Abstract

The invention discloses a bentonite preparation process with short sand mixing time. The bentonite preparation process comprises the following steps: step 1, artificial mineral separation; step 2, ultrasonic cleaning; step 3, ore crushing; step 4, airing and drying; step 5, mineral aggregate heating; step 6, extrusion and sodium modification; step 7, grinding for powder forming; step 8, grading and screening; step 9, comprehensive inspection; and step 10, packaging and warehousing. According to the process, heating and heat preservation are conducted on fine ore, tannic acid is added, the extrusion sodium modification efficiency is improved, the sodium modification time is saved, the working efficiency is greatly improved, primary cleaning and ultrasonic cleaning are conducted on the ore raw materials, soil and impurities on the surfaces of the ore raw materials are greatly reduced, and improvement of the product impurity is facilitated. Cyclone classification is carried out on the semi-finished bentonite product, and re-grinding classification is carried out on the semi-finished bentonite product with unqualified fineness, so that the fineness and uniformity of the product are guaranteed, the sand mixing time is shortened, and sand mixing is facilitated.

Description

technical field [0001] The invention relates to the technical field of bentonite production, in particular to a bentonite preparation process with short sand mixing time. Background technique [0002] Bentonite is a non-metallic mineral with montmorillonite as the main mineral component. The montmorillonite structure is a 2:1 crystal structure composed of two silicon-oxygen tetrahedra sandwiching a layer of aluminum-oxygen octahedron. Due to the formation of montmorillonite unit cells There are some cations in the layered structure, such as Cu, Mg, Na, K, etc., and the interaction between these cations and the montmorillonite unit cell is very unstable, and they are easily exchanged by other cations, so they have good ion exchange properties. It has been used in more than 100 departments in 24 fields of industrial and agricultural production in foreign countries, and there are more than 300 products, so people call it "universal soil". [0003] The performance of bentonite ...

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Problems solved by technology

[0003] The performance of bentonite is extremely excellent, and its application range is extremely wide. It is used in construction, chemical industry, daily necessities production, etc., especially in construction. When bentonite is used in the construction industry, it needs to be mixed with mortar for preparation. However, there are In the sand mixing process of bentonite, the mixing time is long, which reduces the work efficiency. At the same time, in the production process of bentonite on the market, the raw ore contains more impurities, which greatly reduces the purity of the product, and most of the natural bentonite is calcium-based bentonite , the performance is much worse than that of sodium bentonite, so generally sodium bentonite is made into sodium bentonite, but the sodiumization process takes a long time and the sodiumization efficiency is low

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