Method for producing inorganic cementing material by using solid wastes such as fly ash, mineral powder and desulfurized gypsum

Abstract

The invention relates to an inorganic cementing material produced from solid wastes such as fly ash, mineral powder and desulfurized gypsum. According to the invention, the solid wastes such as the fly ash, the mineral powder and the desulfurized gypsum are adopted, and a large amount of silicon dioxide and other raw materials for producing building materials such as cement exist in the solid wastes; a retarder of a cement raw material is prepared from a small part of the desulfurized gypsum to delay solidification of cement, and the desulfurized gypsum is used as an excitant of the fly ash and the mineral powder to excite the pozzolanic activity of the fly ash and the mineral powder so as to allow the fly ash and the mineral powder to react with water, thereby preparing the inorganic cementing material; and the inorganic cementing material can be prepared through simple process steps, cost is low, the wastes are turned into the \wealth, the environment is protected, and the method issuitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an inorganic gelling material produced from solid wastes such as fly ash, mineral powder, desulfurized gypsum and the like. Background technique [0002] Among building materials, any instrument that undergoes a series of physical and chemical actions by itself or mixed with other substances (such as water, etc.) can change from a slurry to a hard solid, and can convert granular materials (such as stone sand, etc.) or blocks, sheet materials (such as bricks, stones, etc.) cemented into a whole substance, called cementitious material. Gel materials that do not contain carbon atom compounds are called inorganic gel materials. In early human construction activities, lime and gypsum were the earliest inorganic gel materials used, and the structures built with them were strong and durable. [0003] However, these traditional materials have shortcomings such as low tensile...

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Problems solved by technology

[0003] However, these traditional materials have shortcomings such as low tensile and impact strength, poor impermeability and corrosion resistance. According to the needs of modern civil engineering development, the development trend of inorganic gel materials needs to be based on the old varieties. , and constantly develop new varieties; materials such as fly ash are used as solid waste discharged from coal-fired power plants. The raw material of inorganic gel can be utilized and turned into treasure