Processing method for preventing mouldness of lichen on surface of desulfurized plaster block

Abstract

The invention provides a processing method for preventing mouldness of lichen on the surface of a desulfurized plaster block, which comprises the following steps: mixing various compositions in a mouldproof chemical agent formula in proportion, evenly stirring for 15 minutes and filling in a sealing bag for sealing; when the mouldproof chemical agent is used, directly adding 0.3 percent of the dosage into a block releasing agent for dissolution, and directly spraying the solution on a clapboard and a bottom die of a die cavity of the desulfurized plaster block; and adding 2 percent of quicklime in the process of adding water and stirring a raw material of the desulfurized plaster block, namely 98 percent of desulfurized plaster powder, pouring the stirred desulfurized plaster slurry into the die cavity of the block, ejecting and demoulding when the desulfurized plaster slurry is initially set, and directly airing the die. The processing method for preventing the mouldness of the lichen on the surface of the desulfurized plaster block saves troubles of manually processing the lichen, and reduces the mass loss rate of products.

Description

Technical field [0001] The invention relates to a process method capable of preventing moss and mildew on the surface of a gypsum block, in particular to a treatment method for preventing moss and mildew on the surface of a desulfurized gypsum block. Background technique [0002] Gypsum block is a non-load-bearing internal partition wall material, and its raw materials include natural gypsum and chemical gypsum. Chemical gypsum includes construction gypsum produced by calcining industrial waste such as desulfurization gypsum, phosphogypsum, and fluorine gypsum. Desulfurization gypsum is an industrial waste of flue gas desulfurization in power plants. If desulfurization gypsum is not treated, it will cause very serious pollution to the environment. Now, these industrial tailings are processed to produce building gypsum powder, which can produce gypsum building materials such as gypsum blocks and gypsum strips. The building materials produced with desulfurized gypsum have su...

AI Technical Summary

Problems solved by technology

However, because desulfurized gypsum is acidic, and the pH value is generally between 5 and 6, the gypsum blocks produced by building gypsum powder calcined with desulfurized gypsum are prone to moss and mildew

At present, there are many fungicides at home and abroad, and the prices are relatively expensive. They are generally used in products with high added value. If they are used in gypsum blocks with low added value, the cost will be too high.

Therefore, the current domestic method of dealing with moss and mildew on gypsum blocks is mainly manual treatment, which is not only complicated, time-consuming, and costly, but also affects the appearance quality of gypsum blocks after treatment.

At present, in the gypsum block industry, there is no treatment method for preventing moss and mildew on the surface of gypsum blocks