CN1422687A

CN1422687A - Mineral drying agent

Info

Publication number: CN1422687A
Application number: CN 01140222
Authority: CN
Inventors: 吴才来; 王福生
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-06
Filing date: 2001-12-06
Publication date: 2003-06-11
Anticipated expiration: 2021-12-06
Also published as: CN1164350C

Abstract

The prespent invention provides a high-effective mineral drying agent which is made up by using attapulgite and clay as raw material, and has the advantage of high drying efficiency, and it is non-toxic, corrosionless and pollutionless, and can be repeatedly used for several times, and can be extensively used in the various fields of medicine, food, leather and others.

Description

Mineral agent

Technical field

The present invention relates to a kind of mineral agent, more particularly the present invention relates to moisture absorption efficient height, nontoxic, non-corrosiveness and radioactivity, pollution-free, can reusable drier.

Background technology

Present commercially available drier such as silica-gel desiccant, not only drying efficiency is not high enough for montomorillonite drier and quick lime drier etc., and often be corrosive or radioactivity, contaminated environment, the repeated use number of times is low etc., in order to overcome the defective that exists in the current drying agent, the invention provides a kind of moisture absorption efficient height, nontoxic, non-corrosiveness and radioactivity, the novel mineral agent that can be repeatedly used.

Summary of the invention

The inventor has found a kind of efficient mineral agent through further investigation, and this drier has overcome the defective of existing drier, can be widely used in medicine, food, leather, grain and oil goods and book and file keeping, energy-saving door and window is antifog, fields such as transport by sea.

This drier is a raw material with attapulgite and carclazyte, makes through following procedure of processing:

(1) attapulgite is used 16-36% salt acid soak 2-48 hour, stirred then;

(2) add carclazyte, mixture is stirred;

(3) said mixture was placed 2-48 hour in room temperature, in baking oven,, ground to form 150-300 purpose powder after the drying in 100-300 ℃ of baking 12-20 hour;

(4) will in baking oven, toast 12-20 hour again after the powder granulation in 100-300 ℃;

Wherein the weight ratio of attapulgite and carclazyte is 1: 0.15-1: 0.5, and the weight ratio of attapulgite and hydrochloric acid is 1: 0.12-1: 0.72.

The weight ratio of preferred attapulgite and carclazyte is 1: 0.25-1: 0.4.

The weight ratio of preferred attapulgite and carclazyte is 1: 0.25-1: 0.4 and the weight ratio of attapulgite and hydrochloric acid be 1: 0.24-1: 0.36.

Preferred attapulgite is 1 with the weight ratio of carclazyte: 0.25-1: 0.4 and the weight ratio of attapulgite and hydrochloric acid be 1: 0.24-1: 0.36, and the concentration of hydrochloric acid of immersion usefulness is 31%.

The preferred 150-200 of the baking temperature of final step ℃.

Preferred granulation is the spherical shot-like particle of 1-2mm.

Attapulgite and carclazyte all are natural minerals.The attapulgite Main Ingredients and Appearance is a silicate clay mineral, is distributed in China south.The Main Ingredients and Appearance of carclazyte is a calcium carbonate, is sepiolite secondly, is distributed widely in China various places, and both can buy on market.

In above-mentioned manufacture method, attapulgite mainly is to remove impurity in the attapulgite hole such as iron etc. with the salt acid treatment, be acid after the processing, make into neutrality or faintly acid after adding alkaline carclazyte, the calcium chloride that generates has water imbibition, makes the hole of attapulgite be full of water, has enlarged the hole of attapulgite or has increased its specific surface, it is easy to use that product is made spheric granules, can adopt method granulation well known in the art.

Description of drawings

Fig. 1 is mineral agent and silica-gel desiccant and montomorillonite drier hydroscopicity correlation curve figure.

The specific embodiment

Preparation embodiment 1

The 100g attapulgite was soaked 12 hours with 31% hydrochloric acid 20ml, add the 25g carclazyte, stir, room temperature was placed 10 hours, baking is 15 hours in 160 ℃ of drying boxes, grind to form 200 purpose powders after the drying, in 140 ℃ of drying boxes, toasted 15 hours again after the granulation, make the spheric granules product (MD2-4A) of 2mm.

Preparation embodiment 2

The 100g attapulgite was soaked 12 hours with 31% hydrochloric acid 30ml, add the 40g carclazyte, stir, room temperature was placed 10 hours, baking is 15 hours in 160 ℃ of drying boxes, grind to form 200 purpose powders after the drying, in 140 ℃ of drying boxes, toasted 15 hours again after the granulation, make the spheric granules product (MD2-5) of 2mm.

Drier of the present invention is the new generation of environment protection drier, is raw material with the natural minerals, and Main Ingredients and Appearance is SiO ₂, Al ₂O ₃, Fe ₂o ₃, FeO, CaO, K ₂O.Compare with present drier, and (1) the moisture absorption efficient that has the following advantages height (＞50%, RH=80%); (2) nontoxic, there is not corrosion and pollution-free, "dead"; (2) except that moisture absorption, can also absorb pernicious gas and peculiar smell; (4) make simply, can be repeatedly used.

The performance of drier of the present invention sees Table 1-2 and accompanying drawing 1.

The comparison of the performance of table 1 and other drier

	Drier of the present invention	Silica-gel desiccant	Quick lime	Cover holder soil
	Drier of the present invention	Silica-gel desiccant	Quick lime	Cover holder soil	Hydroscopicity (RH=80%)	????50-100％	????28-33％	??20-25％	??15-20％
Corrosivity	Do not have	Have	Have	Do not have	Hydroscopicity (RH=80%)	????50-100％	????28-33％	??20-25％	??15-20％
Corrosivity	Do not have	Have	Have	Do not have	Reproducibility	Have	Have	Do not have	Have
Environmental pollution	Do not have	Have	Have	Have	Reproducibility	Have	Have	Do not have	Have

The hydroscopicity of table 2 drier of the present invention under different humidity

Relative humidity	Hydroscopicity (%) *
Relative humidity	Hydroscopicity (%) *	????RH＝20％	????14.60
????RH＝40％	????26.03	????RH＝20％	????14.60
????RH＝40％	????26.03	????RH＝80％	????64.40
????RH＝100％	????84.73	????RH＝80％	????64.40

* weight * 100% before hydroscopicity=(after the moisture absorption weight-moisture absorption before weight)/moisture absorption.

Fig. 1 is drier of the present invention (MD2-4A and MD2-5) and silica-gel desiccant and the correlation curve that covers the hydroscopicity of the native drier of holder when relative humidity 80%.Fig. 1 shows that drier of the present invention hydroscopicity after 96 hours can reach more than 50%, and silica-gel desiccant and Meng Tuo soil drier all can not reach 40%.

In sum, mineral agent of the present invention has moisture absorption efficient height, and is nontoxic, do not have corrosion and pollution-free, "dead", except that moisture absorption, can also absorb pernicious gas and peculiar smell, can be repeatedly used many advantages such as manufacture method is simple, and the field that is widely used, can be used for medicine, food, leather, grain and oil goods and book and file keeping, energy-saving door and window is antifog, fields such as transport by sea, and be used for the precision instrument manufacturing, and handicraft, the drying of toy etc. is handled.

Claims

1. mineral agent, this drier is a raw material with attapulgite and carclazyte, makes through following procedure of processing:

(1) attapulgite is used 16-36% salt acid soak 2-48 hour, stirred then;

(2) add carclazyte, mixture is stirred;

2. according to the drier of claim 1, wherein the weight ratio of attapulgite and carclazyte is 1: 0.25-1: 0.4.

3. according to the drier of claim 2, wherein attapulgite and hydrochloric acid weight ratio are 1: 0.24-1: 0.36.

4. according to the drier of claim 3, the concentration of hydrochloric acid that wherein soaks usefulness is 31%.

5. according to the drier of claim 1, wherein the baking temperature of final step is 150-200 ℃.

6. according to the drier of claim 1, wherein granulation is the spherical shot-like particle of 1-2mm.

7. the drier of claim 1 is at medicine, food, and leather, grain and oil goods and book and file keeping, energy-saving door and window is antifog, and the transport by sea aspect is as the purposes of drier.