Method for preparing aluminum ingot using waste aluminum as raw material

Abstract

The invention discloses a method for preparing an aluminum ingot using waste aluminum as a raw material. The method specifically comprises the following steps: an ash collector is arranged beside a conventional smelting furnace; a raw material is pressed to a block shape in production; then, the raw material pressed to the block shape is put into the smelting furnace; meanwhile, a refining agent, a large sand agent, coal slag and sodium silicate are filled and uniformly mixed until all the raw materials are totally dissolved to obtain molten aluminum; on management, the ash collector is used for picking ash in the molten aluminum to guarantee the purity improvement of the molten aluminum; and finally, the molten aluminum is put into a mold, and is cooled to obtain a finished aluminum ingot. Through the method, the raw material is pressed to the block shape, is put into the smelting furnace, and is not liable to be oxidized, so that the recovery rate of the aluminum ingot is improved. The ash collector is used for collecting the ash, so that the ash can be precisely collected, the molten aluminum and the ash can be clearly separated, the collected ash contains no molten aluminum, the molten aluminum contains no ash, nothing is wasted, the purity of the molten aluminum is kept, and the preparation of the aluminum ingot with high quality is guaranteed. The prepared aluminum ingot is high in percentage to 8.8-9%.

Description

technical field [0001] The invention belongs to the technical field of preparing aluminum ingots, and in particular relates to a method for preparing aluminum ingots from waste aluminum. Background technique [0002] Aluminum is a silver-white metal, and its content in the earth's crust ranks third after oxygen and silicon. The density of aluminum is small, only 34.61% of iron and 30.33% of copper, so it is also called light metal. Aluminum is a non-ferrous metal that is second only to steel in terms of output and consumption in the world. The density of aluminum is only 2.7103g / cm3, which is about 1 / 3 of the density of steel, copper or brass. Due to the light material of aluminum, it is often used in the manufacture of land, sea and air vehicles such as automobiles, trains, subways, ships, airplanes, rockets, and spaceships to reduce its own weight and increase its loading capacity. [0003] The raw material in our daily industry is called aluminum ingot, which should be...

AI Technical Summary

Problems solved by technology

[0005] The traditional method of using waste aluminum such as cans as raw materials to produce aluminum ingots is to put the raw materials such as cans into the melting furnace individually. Under high temperature environment, the cans are prone to oxidation and the recovery rate is not high.

At the same time, the traditional production process is to adopt manual ash mining. First, the ash mining is not clean, and the aluminum liquid contains ash slag, and the quality of the prepared aluminum ingots is unstable; second, the mined things contain a lot of aluminum water. Great waste of raw materials; third, high labor intensity and potential safety hazards