Thermal insulation mortar containing semidry method desulfurized fly ash and preparation method therefor

Abstract

Provided is thermal insulation mortar containing semidry method desulfurized fly ash. The thermal insulation mortar containing semidry method desulfurized fly ash comprises the following raw materials, by weight, 10-15% of ore slag with a granularity of being less than or equal to 0.074mm, 36-42% of thermal insulation sands with a granularity of being less than 2mm, 0.5-4% of semidry method desulfurized fly ash with a granularity of being less than 1mm, 36-44% of steel slag with a granularity of being less than 2mm, 3-8% of cement and 0.2-0.5% of additives. In addition, water with a weight of being 85-100% of the total weight of the added glass bead thermal insulation sands is added. The preparation method is as follows: the semidry method desulfurized fly ash and the steel slag are dried; the semidry method desulfurized fly ash and the steel slag are crushed; the semidry method desulfurized fly ash, the steel slag, the cement, the ore slag and the additives are stirred and mixed; water is added and the mixture is stirred uniformly; glass bead thermal insulation sands are added and the mixture is stirred uniformly; packaging is carried out and the product is standby. The defect can be overcome that the stability is poor when steel slag is employed as an inorganic thermal insulation mortar materials, the pollution problem caused by desulfurized fly ash stockpiling can be solved effectively, and the desulfurized fly ash integration utilization is raised.

Description

technical field [0001] The invention relates to a building material, in particular to a thermal insulation mortar containing semi-dry desulfurization ash and a preparation method thereof. Background technique [0002] With the increase of semi-dry desulfurization projects, the production of semi-dry desulfurization ash is increasing year by year. According to statistics, a 360m 2 The sintering machine adopts full flue gas desulfurization, which produces 40,000 to 50,000 tons per year. The main components of desulfurization ash are calcium sulfite, calcium sulfate, calcium carbonate and calcium hydroxide. At present, desulfurization ash is mostly used as an additive to prepare cement, bricks or inorganic materials. Due to the high content of calcium sulfite in desulfurization ash, its practical application is subject to various restrictions. At the same time, steel slag is a kind of industrial waste slag produced during steelmaking, and its quantity is generally 10-20% of t...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the deficiencies in the prior art, and provides a method that can solve the problem of poor stability when steel slag is used as the inorganic thermal insulation mortar material, and can effectively solve the pollution problem caused by desulfurization ash stockpiling, and improve the comprehensive performance of desulfurization ash. Utilized insulating mortar containing semi-dry desulfurization ash and preparation method

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