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Highly suspended mineral gel low in heavy metals and cristobalite and preparation method thereof

A low-heavy metal and mineral gel technology, applied in gel preparation, chemical instruments and methods, colloid chemistry, etc., can solve the problems of water dispersion viscosity to be improved, and achieve the effect of reducing application risk

Active Publication Date: 2021-04-23
江苏圣一纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, the surface modification of the magnesium aluminum silicate inorganic gel is carried out by adding an appropriate amount of organic modifier to achieve the purpose of improving the dispersion speed of the magnesium aluminum silicate inorganic gel in the aqueous system, but its water dispersion viscosity needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Air-dry the attapulgite clay raw ore until the water content is ≤20%, coarsely crush it to 3±1mm particles with a crusher, and then grind it;

[0035] (2) Fully mix the powder obtained in step (1) with a 20% aqueous solution of sodium hydroxide using a continuous powder-liquid dispersing mixer, and then use a three-roll machine (spacing ≦ 2mm) to extrude it into a sheet;

[0036] (3) Cover the flaky clay mixture treated in step (2) with a film, keep the moisture and store it for more than 10 days, dry it until the moisture is ≤18%, then put it into a stainless steel beating tank, and press the soil-water ratio of 1:10, High speed beating;

[0037] (4) After passing the emulsion treated in step (3) through a 325-order vibrating screen with ultrasound, dehydration in a decanter centrifuge above 5000 revolutions;

[0038] (5) Transfer the cake material treated in step (4) into an ultrasonic dispersion kettle, adjust the pH to 3-4 with 10% sulfuric acid, and ultrasonic...

Embodiment 2

[0042] (1) Air-dry bentonite raw ore to moisture ≤ 20%, coarsely crush it to 3 ± 1mm ​​particles with a crusher, and then grind it;

[0043] (2) Fully mix the powder obtained in step (1) with a 20% aqueous solution of sodium hydroxide using a continuous powder-liquid dispersing mixer, and then use a three-roll machine (spacing ≦ 2mm) to extrude it into a sheet;

[0044] (3) Cover the flaky clay mixture treated in step (2) with a film, keep the moisture and store it for more than 10 days, dry it until the moisture is ≤18%, then put it into a stainless steel beating tank, and press the soil-water ratio of 1:10, High speed beating;

[0045] (4) After passing the emulsion treated in step (3) through a 325-order vibrating screen with ultrasound, dehydration in a decanter centrifuge above 5000 revolutions;

[0046] (5) Transfer the cake material treated in step (4) into an ultrasonic dispersion kettle, adjust the pH to 3-4 with 10% sulfuric acid, and ultrasonically disperse for hal...

Embodiment 3

[0050] (1) Air-dry the raw sepiolite until the moisture content is ≤20%, coarsely crush it to 3±1mm particles with a crusher, and then grind it into powder;

[0051] (2) Fully mix the powder obtained in step (1) with a 20% aqueous solution of sodium hydroxide using a continuous powder-liquid dispersing mixer, and then use a three-roll machine (spacing ≦ 2mm) to extrude it into a sheet;

[0052] (3) Cover the flaky clay mixture treated in step (2) with a film, keep the moisture and store it for more than 10 days, dry it until the moisture is ≤18%, then put it into a stainless steel beating tank, and press the soil-water ratio of 1:10, High speed beating;

[0053] (4) After passing the emulsion treated in step (3) through a 325-order vibrating screen with ultrasound, dehydration in a decanter centrifuge above 5000 revolutions;

[0054] (5) Transfer the cake material treated in step (4) into an ultrasonic dispersion kettle, adjust the pH to 3-4 with 10% sulfuric acid, and ultrason...

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PUM

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Abstract

The invention discloses a high-suspension mineral gel low in heavy metals and cristobalite, comprising the following components by weight: 100 parts of clay minerals, 2-8 parts of inorganic alkali, 0.5-2 parts of sodium citrate and sodium pyrophosphate; The clay minerals are selected from one or more of attapulgite clay, bentonite, sepiolite, halloysite and imonite. The preparation method comprises the following steps: pulverizing and grinding clay mineral raw ore, adding an aqueous solution of inorganic alkali to mix, extruding into flakes; covering with a film, keeping the moisture and stacking for more than 10 days, adding water and beating to form an emulsion; passing through a vibrating sieve After dehydration, add water and dilute acid to the cake material to adjust the pH to 3-4, and then ultrasonically disperse; add a mixture of sodium citrate and sodium pyrophosphate and continue to ultrasonically disperse, then add water and alkali to adjust the pH to 7-8, then dehydrate and dry 1. Obtain the high-suspension mineral gel after crushing. The invention has the characteristics of firstly removing cristobalite, then removing heavy metals, and then adjusting charge to prepare gel, and can be applied to the fields of medicine, food, daily chemical and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic gel, in particular to a high-suspension mineral gel and a preparation method thereof. Background technique [0002] Mineral gels are widely used in pesticides, medicines, coatings, chemicals and other fields, mainly to stabilize, disperse, suspend, thicken, etc.; it is a one-dimensional nanomaterial processed from natural minerals, such as bentonite, which can be dispersed in water. A thixotropic gel is formed. [0003] At present, the preparation technology of natural bentonite processing inorganic gel is mainly wet pulping, sodium modification, separation and purification, drying and crushing to obtain products. [0004] CN1363515A discloses a preparation method of natural magnesium aluminum silicate gel, which uses bentonite, smectite, attapulgite or bentonite as raw materials, and proceeds according to the following steps: 1. Pulverize the raw materials; 2. Add water to the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/00
CPCB01J13/0056
Inventor 沈培友梁丽芹章青杭小帅蒋东阳王运军许庆华
Owner 江苏圣一纳米科技有限公司
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