Cheto-type bentonite sodium modification method and device thereof

A technology of sodium bentonite and open mill, applied in the direction of aluminum silicate, silicate, etc., can solve the problems of ineffective cheto-type bentonite and increased processing costs, so as to facilitate drying and reprocessing and reduce drying time and cost effects

Inactive Publication Date: 2010-07-14
中国非金属矿工业有限公司 +1
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Problems solved by technology

The methods disclosed above each have their advantages and disadvantages. With continuous improvement from dry sodiumization to wet sodiumization, the product quality is gradually improved, and the processing cost is also gradually increased accordingly. Moreover, the above modification methods are not suitable for Cheto which is difficult to modify. Type bentonite is not very effective

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  • Cheto-type bentonite sodium modification method and device thereof
  • Cheto-type bentonite sodium modification method and device thereof
  • Cheto-type bentonite sodium modification method and device thereof

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Embodiment Construction

[0020] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0021] See figure 1 , a kind of cheto-type bentonite sodium modification method, comprising the following process steps and process parameters:

[0022] 1. Select materials. The medium and high-grade natural cutto-type calcium-based bentonite raw ore with a blue absorption amount of 35g / 100g is air-dried or dried until the moisture content is less than 13%, and then crushed by a hammer crusher until the particle size is less than 5mm.

[0023] 2. Add alkali and mix. Soda ash is mixed with water in the lye barrel to form lye with a concentration of 20%, and then the mineral material is transported to the double-helix mixer, and the lye is sprayed on the surface of the mineral material through the nozzle while stirring, and the amount of lye added is 20% of the mineral material 12% of the volume, stir to mix until uniform.

[0024] 3. Strong extrusi...

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Abstract

The invention discloses a Cheto-type bentonite sodium modification method and a device thereof. The modification method comprises processes such as material selection, alkali adding and mixing, forcible extrusion, drying, pulverization and the like. The modification device comprises an alkali solution barrel, a double-screw agitator, a silo, a belt conveyor and an open mill. The core of the invention is that the open mill used in the rubber industry is used as a main modification device. The open mill is provided with a gearbox which is able to provide enough extrusion force and two differential-speed opposite-rotating steel rolls. After material enters the two rolls, the material receives the strong extrusion force and the shear force generated by the two rolls. Bentonite is instantly extruded, kneaded, delaminated and modified. Compared with the existing modification method and device, the method and the device have obvious advantages and are particularly suitable for the sodium modification of Cheto-type bentonite.

Description

technical field [0001] The invention relates to a bentonite deep processing method and a device thereof, in particular to a sodium modification method and a device of a cheto type bentonite. Background technique [0002] Bentonite is a kind of montmorillonite (montmorillonite, chemical formula: Al 2 o 3 4SiO2 2 ·3H 2 O or [MgCa]O·Al 2 o 3 ·5SiO2 2 ·nH 2 O, the theoretical chemical composition is: SiO 2 66.7%, Al 2 o 3 25.3%, H 2 O 5%, its crystal structure is a clay mineral composed of two layers of silicon-oxygen tetrahedron sandwiching a layer of aluminum-oxygen octahedron as a useful component. It is known as "universal" clay in the industry. At present, bentonite has been used as binder, suspending agent, plasticizer, thickener, thixotropic agent, flocculant, stabilizer, purification and decolorization agent, filling agent, catalyst and carrier in metallurgy, machinery, drilling, petrochemical, light Industry, agriculture, construction and other fields have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26
Inventor 王志强胡勤陶勇郭海盈韩杰宗培新谢爱虎王鸽舒锋刘玉芹宋开森姜文明徐光亮马德印王晓磊朱凡
Owner 中国非金属矿工业有限公司
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