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A kind of medicinal montmorillonite and its preparation process

A preparation process, montmorillonite technology, applied in the direction of inorganic chemistry, non-metallic elements, silicon compounds, etc., can solve problems such as difficult control of process parameters, difficulty in obtaining montmorillonite quality, unstable production process, etc., to ensure quality Effect

Active Publication Date: 2018-03-27
四川维奥制药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process parameters of the preparation process of the montmorillonite are not easy to control, the production process is unstable, and the quality of the montmorillonite is difficult to meet the requirements of the medicinal montmorillonite.

Method used

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  • A kind of medicinal montmorillonite and its preparation process

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Comparison scheme
Effect test

Embodiment 1

[0042] A preparation process of medicinal montmorillonite, comprising the following steps:

[0043] S1. Pretreatment: dry the raw montmorillonite ore, coarsely crush it, and sterilize it at 160°C under a pressure of 4.3Kg for 18 minutes to obtain montmorillonite ore powder;

[0044] S2. Add purified water and a dispersant to the montmorillonite mineral powder, stir and mix evenly, let stand, the suspension is divided into three layers, take the middle suspension and pass through a 400-mesh sieve to obtain a montmorillonite suspension;

[0045] Among them, the mass ratio of montmorillonite ore powder to purified water is 1:13; the dispersant is a mixture of sodium hexametaphosphate and sodium chloride, the mass ratio of the two is 2:1, and the added amount is 0.12wt% of raw ore powder ;

[0046] S3. The montmorillonite suspension was ultrasonically dispersed at a temperature of 75° C. for 6 minutes, and classified by a decanter with a flow rate of 2.9 cubic meters per hour. Af...

Embodiment 2

[0052] A preparation process of medicinal montmorillonite, comprising the following steps:

[0053] S1. Pretreatment: Dry the raw montmorillonite ore, coarsely crush it, and sterilize it at 162°C for 10 minutes under a pressure of 4.2Kg to obtain montmorillonite ore powder;

[0054] S2. Add purified water and dispersant to the montmorillonite ore powder, stir and mix evenly, let stand, the suspension is divided into three layers, take the middle suspension and pass through a 300-mesh sieve to obtain the montmorillonite suspension;

[0055] Among them, the mass ratio of montmorillonite ore powder to purified water is 1:14; the dispersant is a mixture of sodium hexametaphosphate and sodium chloride, the mass ratio of the two is 2.5:1, and the addition amount is 0.1wt% of raw ore powder ;

[0056] S3. The montmorillonite suspension is ultrasonically dispersed at a temperature of 80° C. for 5 minutes, and classified by a decanter with a flow rate of 3.0 cubic meters per hour. Aft...

Embodiment 3

[0062] A preparation process of medicinal montmorillonite, comprising the following steps:

[0063] S1. Pretreatment: dry the raw montmorillonite ore, coarsely crush it, and sterilize it at 155°C for 30 minutes under a pressure of 4Kg to obtain montmorillonite ore powder;

[0064] S2. Add purified water and dispersant to the montmorillonite mineral powder, stir and mix evenly, let stand, the suspension is divided into three layers, take the middle suspension and pass through a 500 mesh sieve to obtain the montmorillonite suspension;

[0065] Among them, the mass ratio of montmorillonite ore powder to purified water is 1:12; the dispersant is a mixture of sodium hexametaphosphate and sodium chloride, the mass ratio of the two is 2:1, and the addition amount is 0.05wt% of raw ore powder ;

[0066] S3. The montmorillonite suspension is ultrasonically dispersed at a temperature of 70° C. for 10 minutes, and classified by a decanter with a flow rate of 2.8 cubic meters per hour. A...

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Abstract

The invention relates to montmorillonite and a preparation process thereof and particularly discloses pharmaceutical montmorillonite and a preparation process thereof. The preparation process comprises the following steps of: (S1) pretreating: drying montmorillonite raw ores and coarsely crushing; (S2) adding the pretreated raw ore powder into purified water, stirring and mixing uniformly, standing, taking middle-layer suspension liquid, sieving and obtaining montmorillonite suspension liquid; (S3) carrying out ultrasonic dispersion on the montmorillonite suspension liquid, grading by a horizontal snail machine, obtaining light phases after grading and removing heavy phases; (S4) filtering the light phases by a sieve with the meshes of less than 5mum and centrifuging; (S5) spraying and drying filtrate; (S6) carrying out secondary drying; and (S7) filtering powder after secondary drying using a sieve with 400-800 meshes, thereby obtaining the pharmaceutical montmorillonite. The invention also discloses montmorillonite obtained by adopting the preparation process and a composition including the montmorillonite. The montmorillonite obtained by the preparation process is high in purity, has the indexes such as particle diameter, BET surface area and cation exchange capacity and the like conforming to the indexes of the pharmaceutical montmorillonite, and is especially suitable for medical application.

Description

technical field [0001] The invention relates to a preparation process of montmorillonite, in particular to a medicinal montmorillonite and a preparation process thereof. Background technique [0002] Montmorillonite mainly exists in bentonite in nature and is the main component of natural bentonite. Bentonite in nature also contains minerals such as quartz, feldspar, calcite, kaolinite and illite. The content of montmorillonite is usually 50%-70%, and the content of some rich minerals can reach 80%-90%. The purity is poor. [0003] The unit cell of montmorillonite is two silicon-oxygen tetrahedra sandwiching an aluminum-oxygen octahedron, connected into sheets, and then stacked into layers. With a frame structure, it has many properties, such as expansion, adsorption and thixotropy, and has a wide range of uses. With the improvement of the purity of montmorillonite and the improvement of preparation process, montmorillonite has been widely used in medicine, feed, machinery...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/40
CPCC01B33/40C01P2006/12C01P2006/80C01P2006/90
Inventor 高帆庞国强谢景涛吴庆杨华承冯隽颖董波杨文玉
Owner 四川维奥制药有限公司