Production method of bentonite and calcium chloride compound drying agent

A technology of composite drying and production methods, applied in chemical instruments and methods, separation methods, other chemical processes, etc., can solve the problems of loss of drying effect, easy return of water, etc., and achieve the effect of good moisture absorption, difficult to return, and low price.

Inactive Publication Date: 2018-05-15
建昌县建元澎润土有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the montmorillonite desiccant is used at a temperature higher than 50°C, the adsorbed water is easy to return and loses the drying effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] Bentonite powder processing: crush the mined bentonite, pass through a 1000-mesh sieve, and then add it to the air separator for air selection, and the fine powder selected by air is used as the raw material of bentonite;

[0007] Add calcium chloride compound:

[0008] Add 15-25% water to the fine bentonite powder after winnowing, stir it into mud, then add 30% calcium chloride powder (mass ratio) of mud bentonite, and then stir and mix to become composite bentonite mud;

[0009] Producer:

[0010] Add the composite bentonite clay between the pair of rollers of the pair of roller tablet press, and form a thin sheet through the pair of rollers. The thickness of the sheet is controlled between 1-3mm, and then the sheet is chopped into a standard shape or an irregular shape. Composite desiccant tablets;

[0011] Composite desiccant sheet drying:

[0012] Put the composite desiccant sheet into the roller dryer, and carry out rolling drying. The drying temperature is con...

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PUM

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Abstract

The invention provides a production method of a bentonite and calcium chloride compound drying agent. The bentonite compound drying agent finished product is formed by the processes of processing bentonite powder, adding calcium chloride for compounding, flaking the obtained compound to obtain compound drying agent pieces, and drying. The compound drying agent is prepared by taking the bentonite as a raw material and adding the calcium chloride for compounding; the compound drying agent has the advantages of having a good moisture absorption effect, enabling moisture not easily to return, andbeing low in price, safe and non-toxic, thus being suitable for being used as a drying agent.

Description

technical field [0001] The invention provides a production method of bentonite and calcium chloride composite desiccant in the field of chemical industry. Background technique [0002] Currently widely used food-grade desiccants include calcium chloride and montmorillonite. Calcium chloride has a high water absorption rate and forms a gel after absorbing water, so the water is not easy to return. The montmorillonite desiccant is granular and has a high water absorption rate. High, low price. However, when the montmorillonite desiccant is used at a temperature higher than 50°C, the adsorbed water is easy to return and loses the drying effect. Contents of the invention [0003] In order to overcome the shortcomings of the montmorillonite desiccant, the invention proposes a production method of the bentonite and calcium chloride composite desiccant. In the method, the bentonite is pulverized and air-selected, moistened with water, added with calcium chloride, and then dried...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/04B01J20/30B01D53/28A23L3/3427A23L3/358
CPCA23L3/3427A23L3/358A23V2002/00B01D53/28B01D2253/11B01D2253/112B01J20/046B01J20/12A23V2250/1578A23V2250/156
Inventor 韩庆欣
Owner 建昌县建元澎润土有限责任公司
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