Fireproof high-molecular compound colloid material for coal mines

Abstract

The invention discloses a fireproof high-molecular compound colloid material for coal mines, which belongs to fireproof materials. The fireproof high-molecular compound colloid material is compounded from 40-100 portions of high-molecular compound and 52-98 portions of an inorganic material, wherein the high-molecular compound is polyacrylate, or is composed of 40-55 portions of polyacrylate, 0-30 portions of carboxymethyl cellulose and 0-15 portions of polyacrylamide; the inorganic material is composed of 30-50 portions of bentonite, 12-18 portions of alumina shale powder, 10-20 portions of kaolin, 0-5 portions of attapulgite and 0-5 portions of clay; and the fineness of each raw material is less than 120 um. The preparation method of the colloid material comprises the following steps: mixing the high-molecular compound for 3-5 minutes; and after respectively spraying the inorganic material on a dry mixer, sufficiently and uniformly mixing the 8 materials for 8-10 minutes. The colloid material has the advantages of high water content, high moisture retention, high heat absorption capacity, quick fireproof effect taking, favorable effect, low possibility of afterburning and low composite cost, and is suitable for preventing and controlling fire for the spontaneous combustion and inflammation laws of different types of coal; and the downhole operation is simple and safe.

Description

Technical field [0001] The invention relates to a fire-preventing material, in particular to a polymer compound colloidal material for preventing and extinguishing coal spontaneous combustion in coal mines. Background technique [0002] Spontaneous combustion of coal in coal mines is one of the five major disasters in coal mines. my country is a large coal-producing country. At present, 50% of coal mines are threatened with spontaneous combustion of coal. With the development of new lignite coal fields in central and western my country and the deep mining of old mines, the threat of spontaneous coal combustion has become more serious. The basic principles of coal spontaneous combustion fire also obey the burning triangle and quadrilateral. However, its formation process, spontaneous combustion environment, conditions and methods for fire prevention and extinguishing have their own characteristics. Coal spontaneous combustion has a long or short development process, and because ...

AI Technical Summary

Problems solved by technology

However, when the ammonium bicarbonate gels into a gel, a large amount of ammonia gas will be precipitated, which will cause a bad working environment and affect the work and health of the unscrupulous workers.

At the same time, this kind of gel can easily damage the eyes and skin of workers if it is accidentally operated; the gel is formulated with sodium metaaluminate, which requires high operation and is not easily soluble in water. damage to health

The above two gel-forming processes require two sets of equipment to work at the same time (the base material and the coagulant must be proportioned separately), which is inconvenient to operate and requires many people.