Molten aluminum slag remover and preparation method and application thereof

Abstract

The invention discloses a molten aluminum slag remover and a preparation method and application thereof, and belongs to the technical field of molten aluminum refining. The slag remover comprises the following raw materials in parts by weight: 30-50 parts of sodium chloride, 20-40 parts of potassium chloride, 10-20 parts of sodium fluosilicate and 4-8 parts of fluorite. The preparation method comprises the following steps of: preparing 35 parts of sodium chloride, 25 parts of potassium chloride, 12 parts of sodium fluosilicate and 7 parts of fluorite into the slag remover; mixing the slag remover and inputting into molten aluminum in a furnace for stirring; inputting gas D into the molten aluminum while stirring; and finally, filtering out dross to complete refined aluminum purification. The infiltration effect of the molten aluminum is guaranteed by using sodium chloride and potassium chloride, and separation of hydrogen in the molten aluminum is guaranteed by using potassium chloride; and as the partial pressures of the gas D and hydrogen in the molten aluminum are different, hydrogen generated in the molten aluminum enters bubbles and then escapes from the liquid surface, so that hydrogen generated in the molten aluminum can be removed, generation of pores is avoided, and the separation effect is strong.

Description

technical field

[0001] The invention relates to the technical field of aluminum liquid refining, in particular to a liquid aluminum slag remover and its preparation method and application. Background technique

[0002] When aluminum alloy is smelted, due to the reaction between aluminum and water or oxygen in the air, harmful gases or solid particles will be produced. Such aluminum liquid will produce a series of quality problems such as pores, knives, and slag during deep processing and casting. Therefore, the aluminum liquid must be refined and purified. At present, inert gas is generally introduced into molten aluminum to bring out impurities, and the separation effect of this method is poor. Contents of the invention

[0003] The purpose of the present invention is to provide a liquid aluminum slag remover and its preparation method and application, to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the pr...