CN1337369A - Gypsum fiber producing process - Google Patents

Abstract

The production method of gypsum fibre includes the following steps: breaking, pulverizing, cleaning, dewatering, drying to obtain finished product. As compared with general gypsum fibre, said invented product is long in whiskers, it can be used as reinforcing agent in the field of plastics, rubber industry, paper-making industry and coating industry. It is superior to general gypsum fibre in purity, whiteness and structure, and in application field and application effect.

Description

A kind of method of producing gypsum fiber

The present invention relates to utilize in the fine chemistry industry class method of Gypsum Mine processing plaster fiber.

The major ingredient of Gypsum Mine is a terra alba, is ten parts of good large nonmetallic minerals of a kind of performance, and its accurately machined product is extensive as ten parts of additive uses.Can replace the additive of white carbon black such as gypsum fiber (also claiming whisker), and performance is more much better than white carbon black as rubber plastic.But the development and utilization for Gypsum Mine mostly rests on the roughing stage at present, common flour, the high-strength powder of gypsum processing in the prior art, it all is granular raw material, can only be as common additives, no matter the gypsum fiber of itself does not reach requirement far away from aspects such as purity, whiteness and tensile strength.

The purpose of this invention is to provide a kind of method of producing gypsum fiber, no matter the gypsum fiber that utilizes this method to produce is in purity, whiteness and configuration aspects, still aspect Application Areas and effect, all is better than the common gypsum fiber.

The object of the present invention is achieved like this:

1, with the gypsum ore fragmentation;

2, the gypsum ore after the fragmentation is pulverized to Powdered;

3, Powdered terra alba is put into container, add liquid scavenging agent, stir then, purify, remove impurity;

4, the terra alba mixed solution after the above-mentioned purification is poured in the airtight stainless steel vessel, under a normal atmosphere, heated, take out then, filter crystallisation by cooling through filter cloth to the 80-100 degree;

5, above-mentioned xln is put into water extracter and carry out processed;

6, the xln after will dewatering carries out drying;

7, dried xln is finished product.

After above-mentioned steps was finished, its physico-chemical property of the crystal that the present invention produced showed as:

1, outward appearance: white trichite

2, whiteness: 〉=90%

3, mean length: 〉=80 μ

4, diameter: 2 μ

5, length-to-diameter ratio: 〉=40

6, tensile strength: 21000Mpa

Adopt the resulting gypsum fiber of aforesaid method, be mainly used in industries such as plastics, rubber, papermaking.During as the plastics toughener, can improve the performance of plastics to greatest extent, and can save the synthetic resins raw material in a large number, reduce cost significantly; When being used as the toughener of rubber, all be better than white carbon black at aspects such as tensile strength, surface smoothness, whiteness and plate curving technologies, and cost is lower than white carbon black; When being used as the toughener of papermaking, can playing enhancing, brighten, add the material triple role, can improve the paper class.

Claims (1)

1, a kind of method of producing gypsum fiber is characterized in that this method comprises following step:

A, with the gypsum ore fragmentation;

B, the gypsum ore after the fragmentation is pulverized to Powdered;

C, Powdered terra alba is put into container, add liquid scavenging agent, stir then, purify, remove impurity;

D, the terra alba mixed solution after the above-mentioned purification is poured in the airtight stainless steel vessel, under a normal atmosphere, heated, take out then, filter crystallisation by cooling through filter cloth to 80-100 °;

E, above-mentioned xln is put into water extracter carry out processed;

F, the xln after will dewatering carry out drying;

G, dried xln are finished product.