A preparation process of bentonite additive based on pellet production

Abstract

The invention relates to a preparation process of bentonite additive based on pellet production, comprising: injecting sodium silicate and soda ash into a first reaction chamber through a first feed port for stirring and mixing to generate a bonding composition; the bonding composition is passed through The first discharge port is injected into the second reaction chamber, aluminum sulfate, cellulose and flocculant are injected into the second reaction chamber through the second feed port and stirred and mixed with the bonding composition to form a coagulated composition; the coagulated composition is passed through the second outlet The feed port is injected into the third reaction chamber, and the magnesium oxide is injected into the third reaction chamber through the third feed port and stirred and mixed with the solidified composition to generate bentonite additive; the bentonite additive is injected into the fourth reaction chamber through the third discharge port, and the pellet raw material It is injected into the fourth reaction chamber through the fourth feed port and mixed with the bentonite additive to produce pellets. The invention sets a central control unit to adjust various parameters so that the production efficiency and compressive strength of the produced pellets with preset particle sizes meet the preset standards.

Description

technical field [0001] The invention relates to the field of bentonite additives, in particular to a preparation process for bentonite additives based on pellet production. Background technique [0002] Bentonite is a kind of clay rock, also known as montmorillonite, which has strong hygroscopicity, can be dispersed in colloidal suspension in water medium, and has certain viscosity, thixotropy and lubricity. The blend has plasticity and cohesiveness, and has strong cation exchange capacity and adsorption capacity. Therefore, bentonite is widely used in industrial production, such as drilling mud, iron ore pellets and foundry three major industries. [0003] Bentonite is widely used as a pellet binder at home and abroad. The average amount of bentonite in my country's pellet factories is 1.5% to 3.5%. Compared with the level of less than 1% in foreign countries, the gap is obvious. There are two reasons for the strength: one is that the colloidal substances in the bentonite ...

AI Technical Summary

Problems solved by technology

[0005] For this reason, the present invention provides a kind of bentonite additive preparation process based on pellet production, which can solve the technical problem of being unable to control the hardness of pellet production

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