Magnesium alloy waste regenerator

Abstract

The magnesium alloy waste regenerator consists of furnace body, feeding and discharge system and refining system. The apparatus has a stirrer comprising stirring rod with spiral blades and stirring head and these is a through hole in the stirring rod and the stirring head and connected to the refining gas passage via fixing flange. There are dynamic sealing structure in the upper part of the stirring rod and partitioned bin feeder comprising partitioned bin, rotary opened upper cover and withdrawable partition boards. The present invention can realize mechanical composite stirring of gas during refining and isolate magnesium alloy waste in smelting and refining from outside, and these results in less oxidation and combustion, saving in flux and protective gas, improved refining effect, regeneration quality and efficiency, low cost and less environmental pollution.

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...

AI Technical Summary

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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