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Novel bentonite sodium modification process

A technology of sodium bentonite and a new process, applied in inorganic chemistry, silicon compounds, chemical instruments and methods, etc., can solve the problems of large investment, high energy consumption, and many processes, and achieve the effect of reducing investment, simplifying process, and simple process

Inactive Publication Date: 2014-02-05
湖南飞来峰非金属矿物材料有限公司
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AI Technical Summary

Problems solved by technology

Although the current sodium modification process has a good effect, there are problems such as many procedures, high energy consumption, large investment, and low efficiency.

Method used

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Embodiment Construction

[0019] Below in conjunction with embodiment, the present invention is further illustrated: the applicant has opened a company with an annual output of 200,000 tons of high-quality bentonite in Lixian County, Hunan Province, and the company's bentonite sodium modification process comprises the steps:

[0020] 1. Mineral source screening: Utilizing the local bentonite in Lixian County, which has the characteristics of high water content, low sand content, and soft soil, systematically sample, analyze and test the mines. Product performance requirements, soft soil layer with a moisture content of 20--25%, and bentonite in the mine section are the ore source;

[0021] 2. Rotary cultivator cutting and crushing: use a rotary cultivator on the selected ore source, repeatedly plow and rake bentonite in the mining field, repeat cutting and crushing several times, and cut and crush the wet bentonite to a size of less than 50mm in diameter for use;

[0022] 3. Sodiumization with modifi...

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Abstract

The invention discloses a novel bentonite sodium modification process. The process comprises the following steps of screening mineral resources, cutting and crushing through a rotary cultivator, adding a modifier for mixing and performing sodium treatment, turning and uniformly mixing, ageing, drying, grinding, detecting, metering and packaging, thereby obtaining a finished product. Compared with the prior art, the method has the advantages that indoor crushing is changed into field mine crushing, so that the occupied indoor space is greatly reduced; two processes of double spiral mixing and double-roller extruding are canceled, so that the process can be simplified; devices such as a double spiral mixer, a double-roller extruder and a belt conveyor are saved, and the driving energy consumption of the saved devices is saved. Therefore, the process is simple, practical, efficient, less in environmental pollution, high in sodium treatment efficiency and suitable for the bentonite industry.

Description

technical field [0001] The invention relates to a new process for sodium modification of bentonite, which belongs to the technical field of chemical industry. Background technique [0002] Bentonite, also called bentonite, bentonite or bentonite, is a non-metallic mineral with montmorillonite as the main mineral component. Montmorillonite is a layered aluminosilicate mineral with a 2:1 crystal structure composed of two layers of silicon-oxygen tetrahedron sandwiching a layer of aluminum-oxygen octahedron. Since the silicon in part of the silicon-oxygen tetrahedron in the montmorillonite lattice is replaced by aluminum, and the trivalent aluminum in the aluminum-oxygen octahedron is replaced by magnesium or (and) divalent iron, zinc, manganese and other ions, resulting in charge imbalance, making Na, K, Ca, Mg and other alkali metal and alkaline earth metal ions enter the crystal layer. Some cations existing between the montmorillonite layers have weak bonding force with th...

Claims

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Application Information

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IPC IPC(8): C01B33/40
Inventor 应根其黄剑云
Owner 湖南飞来峰非金属矿物材料有限公司
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