Calcination-free functional desulphurization gypsum putty powder for interior and exterior walls and preparation method thereof

Abstract

The invention discloses calcination-free functional desulphurization gypsum putty powder for interior and exterior walls, which comprises the following components in percentage by weight: 65 to 80 percent of desulphurization gypsum, 5 percent of other aggregate, 10 to 25 percent of excitation material, 4 to 7 percent of functional material and 2.8 to 3.3 percent of admixture, wherein the functional material may be one or the mixture of two of SI90-0 type mineral powder releasing elements which a human body needs, far-infrared ray releasing fibrous rock flour and crystal-equivalent rock flour with the fineness of 2,000 meshes; the excitation material comprises steel slag, calcination alums and sodium silicates; and the admixture comprises dispersible polymer powder, methyl hydroxyethyl cellulose and a 3060 type seaweed additive. The invention also discloses a preparation method for the calcination-free functional desulphurization gypsum putty powder for the interior and exterior walls. The calcination-free functional desulphurization gypsum putty powder for the interior and exterior walls has the advantages of releasing far-infrared rays, keeping healthy the human body, invigorating the health of the human body, decomposing a plurality of toxic gases and eliminating unusual smell, along with a good waterproof effect, the effect of adjusting the ionic equilibrium of the human body, a plurality of trace elements beneficial to the human body, and the like.

Description

technical field [0001] The invention relates to a desulfurized gypsum-free calcined functional putty powder for interior and exterior walls and a preparation method thereof. Used in the field of construction. Background technique [0002] my country is the country with the highest coal consumption in the world, and thermal power generation accounts for more than 90% of the total power generation. The content of SO2 in the air, and the negative impact of acid rain on human survival, the country has adopted mandatory desulfurization technology; however, SO2 in the air is reduced, but it is transferred from the air to the pollution of the ground - desulfurization gypsum, which is harmful to soil, Pollution of water sources and air, and increase the burden of land purchase and storage for enterprises. The annual discharge of desulfurized gypsum is 50 million tons, and the utilization rate is extremely low. It can only be calcined to make paper-faced gypsum board or dry powder ...

AI Technical Summary

Problems solved by technology

The traditional production method of desulfurization gypsum to produce putty powder is: desulfurization gypsum, investing 10 million yuan in equipment, drying - calcining - grinding - aging - building gypsum; then adding retarder and chemical additives to make dry powder Mortar, the biggest disadvantage of the product is: low strength, water resistance, difficult control of initial setting time, and high cost; this greatly affects its promotion and use, and the replacement rate of cement is very low, only 3%; at the same time, it causes secondary energy consumption , secondary pollution; through the Chinese patent network search application number is 200810117381 "a kind of desulfurization gypsum wall scraping putty that can purify the air". The desulfurization gypsum used in their preparation method is the calcined gypsum