High-strength aerated concrete building block produced by using electrolysis manganese residues and preparation method thereof

Abstract

The invention discloses a high-strength aerated concrete building block produced by using electrolysis manganese residues and a preparation method thereof. The building block is made of: (1) basic raw materials, (2) additives and (3) a solvent, wherein the basic raw materials include 48-58 percent by weight of electrolysis manganese residues, 20-30 percent by weight of silica sand, 5-10 percent by weight of cement and 15-25 percent by weight of quicklime; based on the total amount of the basic raw materials, the additives include 0.05-0.12 percent by weight of aluminum powder, 1-5 percent by weight of water glass, 0.005-0.01 percent by weight of sodium benzene sulfonate washing powder and 0.1-0.4 percent of an aid; the solvent is water; and the weight ratio of water to a water material of the basic raw materials is 0.6-0.7. The preparation method comprises the following steps of: pretreating the raw materials, and forcibly stirring according to a certain proportion as required to obtain slurry; and standing and performing steam curing with a still kettle to obtain a product. The aerated concrete building block produced with the method has the advantages of low volume weight, high strength, simple process, convenience in operating, freeness from pollution, high electrolysis manganese residue consumption and convenience in mechanical production.

Description

technical field [0001] The invention relates to the field of chemical preparation, in particular to an aerated concrete block produced by using electrolytic manganese slag and a preparation method thereof, which belongs to the comprehensive utilization technology of industrial solid waste. technical background [0002] my country is the world's most important producer of manganese metal, with an annual manganese output of more than 90% of the world's total output, and most of its products are obtained through sulfuric acid rhodochrosite (the main active ingredient is MnCO 3 ) after obtaining manganese sulfate in the electrolyte, it is realized by electrolysis, because MnCO in manganese ore in my country 3 The content is only within 20%, and other mineral components in the ore are discharged in the form of electrolytic manganese slag during the compounding reaction. Generally speaking, an average of 7-10 tons of electrolytic manganese slag is produced for every ton of electr...

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Problems solved by technology

This method has problems such as the difficulty of raw material processing and the lack of obvious advantages in material performance, which limits its resource utilization. There are few resource utilization methods for electrolytic manganese slag in my country, and it is very important to study the resource utilization of electrolytic manganese slag.

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