Moistureproof titanium gypsum hollow building block and preparation method thereof

Abstract

The invention discloses a moistureproof titanium gypsum hollow building block, comprising the following raw materials in parts by weight: 50-70 parts of titanium gypsum powder (type beta), 15-35 parts of building gypsum powder (beta type), 1-5 parts of excitant, 1-5 parts of neutralizing agent, 0.1-1 part of retarder, 0.2-0.5 part of water reducer, 0.1-0.3 part of waterproofing agent and 25-40 parts of water. The invention also discloses a preparation method of the hollowing building block. The invention has the advantages that a production process flow is simple and direct, cost is low, appearant density is low (800kg / m<3>), softening coefficient of the gypsum hollow building block is more than 0.60, each index completely meets requirements in JC / T698-2010 gypsum block; as the production efficiency is high, one movable pouring gypsum hollow building block production line consumes about 0.3 million tons of titanium gypsum waste slag; industrial policy supported by China can be met, and the requirements on low carbon, environmental protection, energy conservation, consumption reduction and recycling economy can be met; and important significance to ecological environment protection can be achieved.

Description

technical field [0001] The invention belongs to the field of wall building materials, in particular to a moisture-proof titanium gypsum hollow block and a preparation method thereof. technical background [0002] Titanium gypsum is the waste residue with dihydrate gypsum as the main component produced by adding lime (or calcium carbide slag) to neutralize a large amount of acidic wastewater in order to treat acidic wastewater when sulfuric acid method is used to produce titanium dioxide. For every 1 ton of titanium dioxide produced, Just produce 10 tons of titanium gypsum waste residue. The country produces about 8 million tons of titanium gypsum every year, and only a small amount is currently used as a cement retarder. A large amount of the rest are piled up in slag yards and landfills, occupying a large amount of land, polluting the environment, and causing a great economic burden to titanium dioxide enterprises and affecting normal production. Therefore, the treatment a...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome various technical difficulties in producing gypsum hollow blocks (mainly composed of calcium sulfate dihydrate) from chemical waste slag titanium gypsum; to provide a moisture-proof titanium gypsum hollow block and its preparation method to solve the problem of titanium gypsum in my country. The burden on white powder production enterprises is too heavy, and the discharge of titanium gypsum waste is too large. Most of them are landfilled and stacked, which affects the environment and increases the production cost of enterprises.