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Method for preparing desiccative for food-processing apparatus by using attapulgite clay

A technology of attapulgite clay and desiccant, applied in chemical instruments and methods, other chemical processes, etc., to achieve the effects of high moisture absorption rate, simple process requirements and equipment requirements, and no environmental pollution

Inactive Publication Date: 2007-06-13
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Attapulgite clay is a kind of natural adsorbent, and its water absorption capacity can reach 27%, and does not return damp, and the natural attapulgite clay (hereinafter referred to as attapulgite) without toxic and side effects is used to prepare desiccant for this type of application, and there is no report yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0008] Example 1: Select high-quality attapulgite with a purity greater than 70%, dry it naturally, crush it with a crusher to irregular particles with a particle diameter of 2mm, put it in a roasting furnace at 300°C for 1.5 hours, and take it out at a humidity of less than 0.5%. After naturally cooling to room temperature in a dry environment, immerse in saturated calcium chloride solution at 10°C for 4 hours, drain and place in an oven to dry at 120°C for 1 hour, then bake at 260°C for 2 hours to obtain the obtained product Desiccant is required.

example 2

[0009] Example 2: Select high-quality attapulgite with a purity greater than 70%, dry it naturally, crush it with a crusher to irregular particles with a particle diameter of 2 mm, put it in a roasting furnace at 350 ° C for 2 hours, and take it out at a humidity of less than 0.5%. After naturally cooling to room temperature in a dry environment, immerse in saturated calcium chloride solution at 20°C for 4.5 hours, drain and place in an oven for 1 hour at 130°C, then bake at 260°C for 2 hours to obtain the obtained product Desiccant is required.

example 3

[0010] Example 3: Select high-quality attapulgite with a purity greater than 70%, dry it naturally, crush it with a crusher to irregular particles with a particle diameter of 2mm, put it in a roasting furnace at 400°C for 2.5 hours, and take it out at a humidity of less than 0.5%. After naturally cooling to room temperature in a dry environment, immerse in saturated calcium chloride solution at 30°C for 5 hours, drain and place in an oven to dry at 140°C for 1 hour, then bake at 260°C for 2 hours to obtain the obtained product Desiccant is required.

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Abstract

The present invention relates to a method for preparing drying agent for food and instrument by using attapulgite clay. Said method includes the following steps: naturally drying said attapulgite clay in the sun, breaking, roasting, then soaking in CaCl2 or MgCl2 saturated solution, draining and baking in a baking box with a certain temperature so as to obtain the invented product.

Description

Technical field [0001] The invention relates to a method for preparing a desiccant by using natural mineral resources, which belongs to the technical field of natural mineral resource utilization, and specifically relates to a method for preparing a desiccant for food instruments by using attapulgite clay. Background technique [0002] Many natural leather and fiber products and precision instruments must be kept dry from factory to after-sale. The most common method is to put desiccant in bags. At present, silica gel, quicklime or other composite desiccants are mostly used. desiccant. Attapulgite clay is a kind of natural adsorbent, and its water absorption capacity can reach 27%, and does not return damp, and the natural attapulgite clay (hereinafter referred to as attapulgite) without toxic and side effects is used to prepare desiccant for this type of application, and there is no report yet . Contents of the invention [0003] The object of the present invention is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30
Inventor 金叶玲钱运华
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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