Method for preparing fiber cement slab from industrial tailing slag

Abstract

The invention discloses a method for preparing a fiber cement slab from industrial tailing slag. The preparation method comprises the following steps of putting 5-10 parts by weight of wood pulp fibers, 15-50 parts by weight of cement, 20-55 parts by weight of lithium slag, 10-30 parts by weight of graphite tailings and 3-5 parts by weight of an additive into a crusher and crushing the raw materials into a powdery mixed raw material. According to the method for preparing a fiber cement slab from industrial tailing slag, an intermediate chelating agent is adopted, the chelating effect of heavymetal is utilized, a capillary energy conveying channel is blocked, the activated state of the intermediate chelating agent is converted into a stable state, and then the long-term stability of a stabilized product is improved; and after the solid waste is modified, the kinetic energy of chemical reaction is reduced, the reaction activity of the material is reduced, the weather resistance of the solid waste (graphite tailings, lithium slag and the like) material is improved, and different types of green building construction new materials can be formed according to requirements by using a multistage super-strong consolidation material and a graded reinforced solid waste sealing technology.

Description

technical field [0001] The invention relates to the technical field of plate processing, in particular to a method for preparing a fiber cement plate from industrial tailings. Background technique [0002] The next five years will be a critical period for implementing the strategy of manufacturing a strong country and a critical stage for realizing green industrial development. Resource and environmental issues are common challenges faced by mankind. Promoting green growth and implementing the Green New Deal are the common choices of major economies in the world. The efficiency of resource and energy utilization has also become an important factor in measuring the competitiveness of a country's manufacturing industry. Promoting green development is the key to enhancing international competition. the inevitable path of power. my country's industry as a whole has not yet got rid of the development mode of high investment, high consumption, and high emissions. The consumption ...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the domestic chrysotile fiber cement pressure plates are mainly made of fiber (serpentine asbestos), cement (Portland cement), silica fume and other additional materials. 10,000-ton press pressurization and four maintenance procedures to produce cement slabs for construction. This kind of cement slab has high economic cost and cannot make full use of waste resources.