Concave-convex rod clay composite drying agent

A technology of attapulgite clay and composite drying, which is applied in other chemical processes, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of limited application fields and low drying efficiency, and achieve low production costs, high dehydration efficiency, It is conducive to the effect of general promotion and application

Inactive Publication Date: 2005-01-05
杜建中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, natural clay minerals are directly used as a desiccant, and its drying effici

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: The "attapulgite clay composite desiccant" of this embodiment uses attapulgite clay as the main raw material, and the raw ore is dried and crushed until it passes through a 60-mesh sieve, and 15% calcium chloride (Cacl 2 ) after mixing and granulating and then drying. The granulation method is generally rolling granulation in a disc granulator, cylinder granulator or sugar coating machine, and can also be granulated by an extrusion granulator. Calcium chloride (Cacl 2 ) into water in proportion, when the powdery attapulgite clay rolls in the granulator, calcium chloride (Cacl 2 ) solution evenly sprayed in to make it agglomerate and reach the required particle size; it is also possible to mix the raw materials evenly in proportion first, then add water to granulate; after the granulation is completed, the required The product.

[0010] Test and use results show that the static moisture absorption rate of the desiccant produced by this method is about 40...

Embodiment 2

[0012] Embodiment 2: The "attapulgite clay composite desiccant" of this embodiment uses attapulgite clay as the main raw material, and the raw ore is dried and crushed until it passes through a 60-mesh sieve, and 15% magnesium sulfate (MgSO 4 ) after mixing and granulating and then drying. The granulation method is generally rolling granulation in a disc granulator, cylinder granulator or sugar coating machine, and can also be granulated by an extrusion granulator. Magnesium sulfate (MgSO 4 ) into water in proportion, when the powdery attapulgite clay rolls in the granulator, magnesium sulfate (MgSO 4 ) solution evenly sprayed in to make it agglomerate and reach the required particle size; it is also possible to mix the raw materials evenly in proportion first, then add water to granulate; after the granulation is completed, the required The product.

[0013] Test and use results show that the desiccant produced by this method has a static moisture absorption rate of about ...

Embodiment 3

[0015] Embodiment 3: The "attapulgite clay composite desiccant" of this embodiment uses attapulgite clay as the main raw material, and the raw ore is dried and crushed until it passes through a 60-mesh sieve, and 15% sodium sulfate (Na 2 SO 4 ) after mixing and granulating and then drying. The granulation method is generally rolling granulation in a disc granulator, cylinder granulator or sugar coating machine, and can also be granulated by an extrusion granulator. Sodium sulfate (Na 2 SO 4 ) into water in proportion, when the powdery attapulgite clay rolls in the granulator, sodium sulfate (Na 2 SO 4 ) solution evenly sprayed in to make it agglomerate and reach the required particle size; it is also possible to mix the raw materials evenly in proportion first, then add water to granulate; after the granulation is completed, the required The product.

[0016] The results of testing and use show that the desiccant produced by this method has a static moisture absorption r...

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PUM

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Abstract

A composite drying agent is prepared from attapulgite and the strong water absorbent of water-soluble salt through proportional mixing, granulating, and baking or slight sinter.

Description

technical field [0001] The invention relates to a composite adsorption desiccant, in particular to an environmentally friendly clay composite adsorption desiccant with low cost, high adsorption efficiency and wide application, in particular to an attapulgite clay composite desiccant. Background technique [0002] Traditional adsorption desiccants have always been represented by silica gel. However, silica gel desiccants are difficult to decompose for a long time after being discarded. With the improvement of environmental protection requirements, many countries and regions have increasingly restricted the application of silica gel desiccants. Under such a market background, the clay mineral desiccant with low production cost, easy to decompose, and environmental protection function caters to the new demand of the market. However, natural clay minerals are directly used as a desiccant, and its drying efficiency is much lower than that of silica gel, so the application field ...

Claims

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Application Information

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IPC IPC(8): B01D53/28B01J20/12
Inventor 杜建中
Owner 杜建中
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