Gelatinizing agent of mine fillers

Abstract

The invention relates to a low cost gelatinizing agent of mine fillers prepared from water quenched slags, steel slags and waste gypsum. The gelatinizing agent of mine fillers comprises the following components (by weight percentage): 40-85% of water quenched slags, 0.5-20% of waste gypsum and 3-35% of steel slags, wherein the specific surface area of steel slags should be controlled at 4,000-10,000 cm<2> / g; less than 10% of cement, and 0.2-4.0% of one or a random mixture of NaCl, FeCl3, AlCl3 and Al2(SO4). The invention can comprehensively utilize water quenched slags, steel slags and waste gypsum to reduce pollution and land occupation. The gelatinizing agent of mine fillers of the invention has a low cost and can satisfy the requirement of compression strength of mine fillers.

Description

technical field [0001] The invention relates to the comprehensive utilization of smelting slag and power plant waste slag, and specifically belongs to the production of low-cost mine filling material to obtain a gelling agent from water-quenched slag, steel slag and waste gypsum. Background technique [0002] At present, most of the cementitious materials used in filling mining in China are Portland cement. Its shortcoming is that not only the price is high, but more importantly, the energy consumption of the preparation is high, so that the cost of cementitious materials accounts for 60% of the filling cost and 20% to 30% of the mining cost, and the strength of the formed filling material is not high. High, the consumption of cementitious material is greater. [0003] Since the 1980s, China has started to develop cementitious materials that replace cement, such as high-water materials, full-water materials, and red mud cementitious materials. The shortage of high-water ma...

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Problems solved by technology

[0005] At present, it is common to use steel slag in the construction industry, but it has not been found to be used as a raw material in the gelling agent for mine filling. It is believed that the activity of steel slag is poor. The strength of the coagulant is reduced and cannot be used

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