Online recovery treatment device and treatment process of magnesium alloy pressure casting excess material waste
A technology of recycling and processing magnesium alloys, which is applied in the direction of improving process efficiency and reducing gas emissions, can solve problems such as unsuitable for on-site processing, high equipment requirements, and environmental pollution, and is conducive to recycling, high degree of automation, and Good product quality
Pending Publication Date: 2018-06-22
JIANGSU FAVOUR AUTOMOTIVE NEW STUFF SCI TECH +2
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Problems solved by technology
The use of flux smelting will produce harmful hydrogen halide gas and magnesium slag during the smelting process, forming more flux inclusions, which not only reduces the yield of magnesium metal, but also pollutes the environment and cannot guarantee the performance of the alloy.
Distillation and electrolysis have high requirements on equipment and are not suitable for on-site treatment of magnesium alloy die-casting enterprises
Method used
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[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0020] Such as figure 1 As shown, an on-line recycling and processing device for magnesium alloy die-casting waste, including a pretreatment chamber, a smelting chamber, a refining chamber and a static chamber.
[0021] The pretreatment chamber performs degreasing, for example, using high-temperature steam and other degreasing methods, and the present invention is not limited to other degreasing methods.
[0022] The smelting chamber includes a feeding port, and the charge enters the smelting chamber from the feeding port, and a heating device is installed in the smelting chamber, and the heating device is used to melt the charge; in order to make the alloy composition in the smelting chamber uniform, the melting chamber A stirring device is installed, preferably an electromagnetic stirring device, and the stirring device is used for...
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Abstract
The invention discloses an online recovery treatment device and treatment process of magnesium alloy pressure casting excess material waste. The device comprises a pretreatment chamber, a smelting chamber, a refining chamber and a standing chamber. The pretreatment chamber carries out oil removal. The smelting chamber smelts a furnace material. A filter device is arranged between the smelting chamber and the refining chamber. The refining chamber carries out gas refining. The refining chamber communicates with the standing chamber. The standing chamber is provided with a pouring system for pouring. During treatment, (1) oil removal is carried out in the pretreatment chamber; (2) smelting is carried out under protection of CO2+SF6 mixed gas, and the temperature of the smelting chamber is controlled to range from 670 DEG C to 720 DEG C; (3) inert gas is introduced to the refining chamber through a gas inlet pipe for gas refining; and (4) a refined material is poured through the pouring system at the temperature ranging from 660 DEG C to 700 DEG C after being subjected to heat preservation in the standing chamber. According to the online recovery treatment device and treatment process, the requirement for timely recovery of the excess material waste on the current pressure casting field can be met, resource cyclic utilization is facilitated, the material utilization rate is increased, and the production cost is reduced.
Description
technical field [0001] The invention relates to an on-line recycling and processing device for magnesium alloy die-casting waste, which belongs to the technical field of metal smelting. The invention also relates to an online recovery and treatment process for magnesium alloy die-casting waste. Background technique [0002] Magnesium alloys have the advantages of low density, high specific strength and specific stiffness, and excellent casting properties, and can be recycled and recycled. They have broad application prospects in the fields of electronic information, aerospace, and automobiles. At present, about 90% of magnesium alloy products are obtained by casting, and die casting is the main forming method. In the production process of die casting, risers, ladles, runners and unqualified die castings often account for 40-60% of the total charge. Such die-casting residues and wastes are generally supplied to magnesium alloy smelters with recycling and processing capabili...
Claims
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IPC IPC(8): C22B7/00C22B26/22C22B1/00
CPCC22B1/005C22B7/003C22B26/22Y02P10/146Y02P10/20
Inventor 彭立明李娟郑飞燕李健
Owner JIANGSU FAVOUR AUTOMOTIVE NEW STUFF SCI TECH