Magnesium alloy crushing system and method

Abstract

The invention discloses a magnesium alloy crushing system and a magnesium alloy crushing method. The magnesium alloy crushing system comprises a gas source, an upper hopper, an electromagnetic vibration feeder, an upper-section double-roller crusher, a lower-section double-roller crusher, a lower hopper and an oxygen gas detector, wherein the upper hopper, the electromagnetic vibration feeder, the upper-section double-roller crusher, the lower-section double-roller crusher and the lower hopper are sequentially connected from top to bottom; the upper hopper, the upper-section double-roller crusher, the lower-section double-roller crusher and the lower hopper comprise a gas inlet close to the bottom and a gas outlet close to the top; the gas source is connected with the gas inlet through a pipeline; the gas outlet is connected with a gas exhaust tube; the gas exhaust tube is provided with the oxygen gas detector; two pipelines are connected with the gas source, one pipeline is connected with the gas inlet through a pressure reducing valve and a pneumatic ball valve, and the other pipeline is connected with an electromagnetic directional valve. According to the magnesium alloy crushing system, the working environment is safe, a little of gas-source gas is used, the device structure is simple, and the operation is convenient. And requirements on an environment are low, the crushing cost is low and the recycling efficiency is high.

Description

technical field [0001] The invention relates to the field of metal processing, more precisely, to a recycling and processing device and method of a magnesium alloy crushing system. Background technique [0002] The production of magnesium alloy die-casting inevitably produces magnesium alloy waste. Usually, only 30% of the raw materials of magnesium alloy die-casting are used for finished workpieces, and most of the rest are consumed in runners, gates, handles, and overflow tanks. The rest of the primary waste such as handles need to be recycled through secondary smelting. [0003] The most commonly used method for recycling magnesium alloy scrap is the smelting method, and its main process is: scrap pretreatment → melting → iron removal → degassing and slag removal → casting. The process of recovering magnesium in this method is cumbersome and expensive. [0004] And because magnesium is an active metal, if other alloy crushing methods, such as dry state mechanical crushi...

AI Technical Summary

Problems solved by technology

The process of recovering magnesium in this method is cumbersome and expensive

[0004] And because magnesium is an active metal, if other alloy crushing methods are used, such as dry mechanical crushing, the block will be transformed into powder, which will increase the contact area between magnesium metal and oxygen, and it will easily burn or even explode. Mechanical pulverization is more dangerous

Traditional shredders, crushers, etc. are not only dangerous, but also have low recycling efficiency, high manpower and material costs, and difficult operation

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