A method for reducing aluminum slag generation in aluminum processing and smelting process

Abstract

The invention discloses a method for reducing the generation of aluminum slag in the process of aluminum processing and smelting, which comprises the following steps: preparing and adding materials: selecting raw aluminum and aluminum ingots with a purity of more than 99.70%, the liquid-solid ratio is greater than 1.2, and no residual volatile liquid is used for refining Refining agent, batching using master alloy, first evenly into the furnace solid material, then into the raw aluminum, finally evenly and gently push the master alloy required for alloying from the furnace threshold, the solid material is buried in the aluminum liquid, among them, the aluminum ingot and The master alloy is preheated in the flue gas waste heat furnace before being put into the furnace. This method of reducing the generation of aluminum slag in the aluminum processing and smelting process, through the design and innovation of the overall process, effectively reduces the generation of aluminum slag in the smelting process, improves the effective use of metal, reduces the generation of tail waste, and reduces the aluminum Meltdown and production costs.

Description

technical field [0001] The invention relates to the technical field of aluminum processing, in particular to a method for reducing the generation of aluminum dross in the aluminum processing and smelting process. Background technique [0002] In the process of aluminum processing and smelting, aluminum slag is inevitably produced. Aluminum slag is mainly composed of metal and non-metallic impurities, which come from: electrolytic aluminum liquid, aluminum ingots, impurities in aluminum waste, and cosolvents in various alloying agents , solvents for refining and slag removal, aluminum oxide formed by contacting molten aluminum with air during the smelting process, and fallen charge, etc. The wettability of slag and melt is good, and the wetting angle is less than 90°. There is a considerable amount of melt mixed in the slag. This part of the melt is dispersed in the slag in the form of particles and adheres to the slag. The aluminum produced during smelting The more slag, th...

AI Technical Summary

Problems solved by technology

This part of the aluminum loss has a great impact on the production cost of aluminum processing. In addition, aluminum slag is a solid tailing waste. The greater the production volume, the more tailing waste after aluminum slag treatment, and the greater the pressure on the environment. It will also cost a considerable amount of money to do harmless treatment

[0003] At present, there are many methods and processes for the treatment of aluminum slag, but there is a lack of comprehensive research and innovation on reducing the generation of aluminum slag in the source smelting process, which leads to the low effective use rate of metals in most aluminum processing enterprises and the large amount of waste generated. High production costs

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