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Method for preparing heavy-viscous organophilic bentonite

A bentonite and high-viscosity technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as unstable quality, limited application fields, and low viscosity, so as to improve drying efficiency and avoid product quality. good stability effect

Inactive Publication Date: 2008-07-23
苏州中材非金属矿工业设计研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a preparation method of high-viscosity organic bentonite, the purpose of which is to solve the problem that the existing organic bentonite products in my country have low viscosity and unstable quality, which leads to the problem that the application field is not wide

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  • Method for preparing heavy-viscous organophilic bentonite

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Embodiment 1

[0030] Embodiment one: a kind of preparation method of high-viscosity organobentonite, as shown in accompanying drawing 1, is made up of following steps successively:

[0031] (1) Sodiumization of bentonite raw ore: Add bentonite raw ore, water and sodiumizing agent into a ф1000×1000 sodiumization tank with a stirrer and mix, and stir at a stirring speed of 300r / min, and keep the sodiumization reaction for 60min Wherein, the mass ratio of water and bentonite raw ore is 13:1, and the mass ratio of sodiumizing agent and bentonite raw ore is 4%; sodium carbonate is selected as the modifying agent.

[0032] (2) Purification: ф50 hydrocyclone and WLB-350 horizontal screw centrifuge are connected in series; the sodiumized material enters ф50 hydrocyclone from the feed port of ф50 hydrocyclone, and passes through ф50 hydrocyclone in turn flow device and WLB-350 decanter centrifuge. The diameter of the overflow port of the ф50 hydrocyclone is 10mm, the diameter of the bottom flow por...

Embodiment 2

[0036] Embodiment two: a kind of preparation method of high-viscosity organobentonite, as shown in accompanying drawing 1, is made up of following steps successively:

[0037] (1) Sodiumization of bentonite raw ore: Add bentonite raw ore, water and sodiumizing agent into a ф1000×1000 sodiumization tank with a stirrer and mix, and stir at a stirring speed of 200r / min, and keep the sodiumization reaction for 40min The sodiumized material is obtained; wherein, the mass ratio of water to bentonite raw ore is 20:1, and the mass ratio of sodiumizing agent to bentonite raw ore is 8%; the sodiumizing modifying agent is a mixture of sodium carbonate and sodium chloride.

[0038] (2) Purification: ф50 hydrocyclone and WLB-350 horizontal screw centrifuge are connected in series; sodiumized material enters ф50 hydrocyclone from the feed port of ф50 hydrocyclone, and passes through ф50 hydrocyclone in turn And WLB-350 horizontal centrifuge. The diameter of the overflow port of the ф50 hyd...

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Abstract

The invention provides a method for preparing high viscosity organophilic bentonite, which carries out steps of sodium treatment, purification, hydrothermal synthesis, dewatering by filter pressing, crashing and drying operation to bentonite raw ore to obtain the high viscosity organophilic bentonite. The invention can be directly applied to oil paint, printing ink, petroleum drilling slurry and heavy polymer and so on as a thickening suspension agent, a fluid deformation agent and an anti-sagging agent. Through systematic study on technologies of the sodium treatment modification, purification, organic compound and so on of the bentonite, the invention prepares organophilic bentonite jelly glue with stable product quality and excellent performance and determines a proper technical process flow and technical parameters.

Description

technical field [0001] The invention relates to a method for preparing high-viscosity organic bentonite. After performing sodiumization, purification, synthesis, dehydration and drying operations on bentonite raw ore, the viscosity of the obtained organic bentonite can reach 8000-10000mPa.s, which can be directly applied to Paints, inks, oil drilling mud and high molecular polymers are used as thickening suspension, rheology and anti-sagging agents. Background technique [0002] Bentonite (Bentonite) is also called bentonite or bentonite. It is a clay mineral mainly composed of montmorillonite. The content of montmorillonite is generally 85-90%. Therefore, some properties of bentonite are determined by montmorillonite. The structural formula of montmorillonite is Na x (H 2 O) 4 {(AI 2-x Mg 0.33 )[Si 4 o 10 ](OH) 2}, the unit crystal layer consists of two layers of silicon-oxygen tetrahedron and one layer of silicon-oxygen octahedron, the tetrahedron and octahedron ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/44C09C1/42
Inventor 雷东升王学群
Owner 苏州中材非金属矿工业设计研究院有限公司
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