A method for preparing ultra-high water filling materials by using iron-aluminum series high-activity materials in conjunction with industrial solid waste

Abstract

The invention provides a method for preparing iron aluminate based ultrahigh water filling material through cooperation of a solid waste based high-activity material serving as a main material and multiple types of bulk solid wastes serving as auxiliary materials. According to the method, bulk industrial solid wastes are used as raw materials of the ultrahigh water filling material, the productioncost of the ultrahigh water filling material is reduced while a large quantity of stacked solid wastes are consumed, and besides, the prepared ultrahigh water filling material has excellent performance than traditional filling materials and can better adapt to the requirements of backfill of karst subsidence areas and mine exploitation areas. The method comprises simple steps and is convenient tooperate and high in practicability.

Description

technical field [0001] The invention discloses a method for preparing a ferro-aluminate ultra-high water filling material by using solid waste-based high-activity materials in cooperation with various types of industrial solid waste, and relates to the fields of chemistry, solid waste recycling and environmental protection, especially It is suitable for filling in deep pits, foundation pits, subsidence areas in karst areas, and goafs in metal and non-metal mines. Background technique [0002] With the continuous development of my country's economical and industrialized production, industries such as electric power, metallurgy, and mining have produced a large amount of industrial waste in the production process, which is often treated by repairing storage or simple stacking, which occupies precious land resources. At the same time, it also caused huge pollution to the surrounding environment. [0003] At the same time, with the rapid development of social economy and urban p...

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Problems solved by technology

[0005] However, with the increase in the depth and breadth of karst subsidence areas and mine mining, the problems of high-water filling materials in the construction and application process are becoming more and more obvious: 1. The initial and final setting time of traditional high-water filling materials cannot be adjusted, and are more affected by the environment. 2. Traditional high-water filling materials have poor pumpability, and engineering problems such as early setting and pipe plugging often occur during ultra-long-distance construction; 3. However, due to the large treatment area of ​​karst caves, goafs, and subsidences, one-time filling consumes Excessive filling materials with high water will increase the project cost, and to a certain extent, cause waste of resources such as gypsum, limestone, clay, etc., and aggravate ecological damage

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