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Method for activating attapulgite

A technology for activating attapulgite and attapulgite soil, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as high cost and serious waste water pollution, and achieve the effects of improving surface performance, improving environmental protection efficiency, and reducing production costs

Inactive Publication Date: 2017-07-18
安徽省明美矿物化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defects in the prior art, the purpose of the present invention is to provide a method for activating attapulgite to overcome the high cost of thermal activation, acidification and other methods, and serious waste water pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for activating attapulgite provided in this embodiment, the method for activating attapulgite comprises the following steps:

[0026] (1) Purify the attapulgite:

[0027] Grinding and pulverizing the attapulgite, sieving, then mixing the attapulgite with deionized water, stirring, standing still, filtering and drying;

[0028] (2) Activation of attapulgite:

[0029] Heat up the attapulgite prepared in step (1), use an inert gas as a carrier gas to make water vapor and attapulgite contact and react, further increase the temperature, keep it for 4 hours, start to cool down, and stop adding water vapor, wait until the temperature After cooling down to room temperature, take out the attapulgite.

[0030] The step (1) is sieved to be below 3mm.

[0031] In the step (2), after the attapulgite prepared in the step (1) is raised from 25°C to 250°C, the inert gas helium is used as the carrier gas to make the water vapor contact with the attapulgite, and the temperatu...

Embodiment 2

[0036] A method for activating attapulgite provided in this embodiment, the method for activating attapulgite comprises the following steps:

[0037] (1) Purify the attapulgite:

[0038] Grinding and pulverizing the attapulgite, sieving, then mixing the attapulgite with deionized water, stirring, standing still, filtering and drying;

[0039] (2) Activation of attapulgite:

[0040] Heat up the attapulgite prepared in step (1), use an inert gas as a carrier gas to make water vapor and attapulgite contact and react, further increase the temperature, keep it for 2 hours, start to cool down, and stop adding water vapor, wait until the temperature After cooling down to room temperature, take out the attapulgite.

[0041] The step (1) is sieved to be below 3mm.

[0042] In the step (2), after the attapulgite prepared in the step (1) is raised from 25°C to 250°C, the inert gas helium is used as the carrier gas to make the water vapor contact with the attapulgite, and the temperatu...

Embodiment 3

[0047] A method for activating attapulgite provided in this embodiment, the method for activating attapulgite comprises the following steps:

[0048] (1) Purify the attapulgite:

[0049] Grinding and pulverizing the attapulgite, sieving, then mixing the attapulgite with deionized water, stirring, standing still, filtering and drying;

[0050] (2) Activation of attapulgite:

[0051] Heat up the attapulgite prepared in step (1), use an inert gas as a carrier gas to make water vapor and attapulgite contact and react, further increase the temperature, keep it for 4 hours, start to cool down, and stop adding water vapor, wait until the temperature After cooling down to room temperature, take out the attapulgite.

[0052] The step (1) is sieved to be below 3mm.

[0053] In the step (2), after the attapulgite obtained in step (1) is raised from 25°C to 250°C, the inert gas helium is used as the carrier gas to make the water vapor and the attapulgite contact and react, and the temp...

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PUM

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Abstract

The invention belongs to the technical field of sewage treatment and provides a method for activating attapulgite. The method comprises the steps of purification of the attapulgite, namely grinding, crushing and sieving the attapulgite; mixing the attapulgite with deionized water, stirring, standing, filtering and drying; and activation of the attapulgite, heating the attapulgite prepared in the previous step, carrying out contact reaction on vapor and the attapulgite through an inert gas as a carrier gas, further raising the temperature, keeping for 2-4h, beginning to cool, stopping adding the vapor, and taking out the attapulgite after cooling to a room temperature. The disadvantages that the methods such as thermal activation and acidification are high in cost and serious in sewage pollution are overcome.

Description

technical field [0001] The invention belongs to the technical field of attapulgite processing, and in particular relates to a method for activating attapulgite. Background technique [0002] Attapulgite belongs to the sepiolite family in mineralogy, and is a layer-chain structure of hydrous magnesium-rich aluminum silicate clay minerals. Attapulgite is widely used in the fields of chemical industry, light industry, textile, building materials, environmental protection and pharmaceuticals because of its special fiber structure, excellent adsorption and decolorization properties. Under normal circumstances, attapulgite, as a powder material, is difficult to exist in the state of dispersed independent rod crystals, but forms a certain form of crystal aggregates. Therefore, in practical application, attapulgite must be purified and activated. [0003] In the prior art, thermal activation or acid activation process is often used, combined with mechanical stirring, ultrasonic st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30
CPCB01J20/12
Inventor 扈卫珍周慧堂刘玉梅石娟
Owner 安徽省明美矿物化工有限公司
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