Aeration block for preparing residual aluminum ash

Abstract

The invention discloses an aeration block for preparing residual aluminum ash. The aeration block is prepared the following raw material components in parts by weight: 45-60 parts of impurity-removedresidual aluminum ash, 3-5 parts of gypsum, 15-20 parts of quick lime, 5-8 parts of silica fume, 5-8 parts of diluted sulphurous acid slurry waste liquid, 5-10 parts of engineering sand and 6-12 partsof ordinary Portland cement; and the aeration block is further prepared from the following raw material components in percentage by weight of the total amount of the ordinary Portland cement and thequick lime: 0.3-0.5% of citric acid, 0.5%-1% of a high-performance water reducer, 0.5%-1% of rock sand crystals and 0.1%-0.3% of calcium lignosulphonate. By adding additives such as the high-performance water reducer, the early strength of the aeration block is high.

Description

technical field [0001] The present disclosure generally relates to the field of building materials, specifically to the field of manufacturing aerated blocks, and in particular to an aerated block prepared from residual aluminum ash. Background technique [0002] With the rapid development of my country's economy, the demand for aluminum continues to increase. my country has become the world's largest aluminum producer. With the wide application of metal aluminum, the production of aluminum ash is also increasing. Aluminum ash is the product of the slag produced in the production process of electrolytic aluminum or cast aluminum after cooling and processing, and it is a renewable resource. At present, the processing method of aluminum ash in my country is mainly based on accumulation. On the one hand, slag piles occupy a large amount of land; [0003] Aluminum ash contains aluminum and a variety of valuable elements, mainly composed of aluminum metal, oxides, chlorides an...

AI Technical Summary

Problems solved by technology

The aluminum ash just out of the furnace contains a large amount of metallic aluminum. Based on the current aluminum slag recycling process, there are certain shortcomings. Only part of the metallic aluminum can be effectively recycled, and the remaining waste aluminum slag is piled up in the factory area or landfilled.