Magnesium alloy waste regenerator

Abstract

A magnesium alloy waste recycling equipment is composed of a furnace body, a feeding and discharging system and a refining system. The equipment adopts a stirrer composed of a stirring rod with a spiral blade and a stirring head, and a through hole is arranged in the stirring rod and the stirring head, and the through hole is connected with the refining gas channel through a fixed flange; Dynamic sealing structure; the feeding device adopts the method of compartment feeding, which is composed of compartment, upper cover that can be turned and opened, and partition that can be drawn out. The invention can realize the mechanical gas composite stirring function in the refining process, and at the same time, the magnesium alloy waste is isolated from the external environment in the melting and refining process. Not only is oxidation and combustion not easy to occur, saving flux and protective gas, but also can significantly enhance the refining effect of magnesium alloy melt, improve the regeneration quality and efficiency of magnesium alloy scrap, reduce regeneration cost, and is beneficial to environmental protection.

Description

technical field [0001] The invention relates to magnesium alloy smelting and magnesium alloy waste regeneration equipment, which belongs to the technical field of material processing equipment. Background technique [0002] As the lightest metal structural material in practical applications, magnesium alloy has a series of advantages such as high specific strength, high specific stiffness, good damping performance, excellent cutting performance, good casting performance, and easier recycling than plastics. With the breakthrough of processing technology and the sharp drop in price, the application in aerospace, automobiles, home appliances, communication products, etc. has expanded rapidly; especially the magnesium alloy die-casting products have developed particularly rapidly, with an annual growth rate of about 15%. [0003] At present, the typical magnesium alloy die-casting process will produce about 50% of the process waste. These wastes have a relatively small surface a...

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Problems solved by technology

Some foreign companies have developed complete sets of magnesium alloy recycling equipment based on flux refining or gas refining, but to varying degrees, there are problems such as high price and poor equipment adaptability, which cannot meet the requirements of waste recycling for emerging magnesium alloy die-casting enterprises in my country.

[0005] At present, individual magnesium alloy raw material factories in China use floor furnaces, gas furnaces or resistance furnaces to remelt and regenerate waste materials, and use fluxes for protection and refining. Magnesium alloy melts are exposed to air, which is prone to oxidation and combustion, which not only wastes fluxes, but also The environment is harsh, and the refining effect is poor, and it is difficult for the recycled ingot to meet the ASTM standard

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