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Equipment for preparing regenerated fluoride salt or alumina from waste of aluminium electrolysis

A technology for waste and fluoride salt, which is applied in the field of devices for producing regenerated fluoride salt and alumina from aluminum electrolysis waste, can solve the problems of inability to automatically discharge materials, unfavorable industrial production, and short service life of air distribution panels. , to achieve the effect of simple operation, elimination of fusible furnace agglomeration, and good product quality

Inactive Publication Date: 2003-02-12
抚顺铝厂科学研究所
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Problems solved by technology

However, it has been found in production practice that due to the limitations of the furnace body structure of the above-mentioned patented device, there are still many problems in the recovery of fluoride salts and alumina in waste slags such as anode carbon slag and spent cathode carbon blocks discharged in aluminum electrolysis production. : When the anode carbon slag, waste cathode carbon block and other massive wastes discharged in aluminum electrolysis production are roasted in the ZL96115111.0 device, the time required for ignition is as long as 3 hours, which is not good for industrial production; Make it impossible to automatically discharge materials; the air distribution plate has a short service life and is easy to burn out, which affects production efficiency

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  • Equipment for preparing regenerated fluoride salt or alumina from waste of aluminium electrolysis
  • Equipment for preparing regenerated fluoride salt or alumina from waste of aluminium electrolysis
  • Equipment for preparing regenerated fluoride salt or alumina from waste of aluminium electrolysis

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Embodiment Construction

[0014] figure 1 , image 3 As shown, the present invention is formed on the basis of the main furnace with waste heat complementary structure in the ZL96115111.0 patent by adding a pneumatic bulking device 30. The pneumatic bulk feeder 30 is installed at the discharge port of the feeder 10 of the main furnace 17 .

[0015] figure 2 As shown, the present invention is based on the ZL96115111.0 patent with the main and auxiliary furnace waste heat complementary structure to add a pneumatic bulking device 30. The pneumatic bulk feeder 30 is installed at the discharge port of the feeder 10 of the main furnace 17 .

[0016] The pneumatic bulk feeder 30 of the present invention is composed of a compressed air pipeline with a flow meter; the air outlet of the compressed air pipeline is arranged at the material outlet of the feeder 10, and Nozzles are provided at the tuyere. Increase the height of the main furnace 17 of the device of the present invention to 5.5 meters, and its d...

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Abstract

An apparatus for prepairng the regenerated fluoride salt and alumina from the waste generated by aluminium electrolysis is an improvement to the patent ZL96115111.0, and features that an additional crush-screen system composed hammer crusher and sieve set is used in the front of the said apparatus. Its advantages are low consumption of electric energy, no secondary pollution, high recovery rate and high quality of products.

Description

(1) Technical field [0001] The present invention relates to a device for treating solid waste produced in the production of non-ferrous metals by means of a fire-method boiling roasting process—a device for producing regenerated fluoride salt and alumina from aluminum electrolysis waste. The device is suitable for aluminum electrolysis anode carbon Slag, waste cathode carbon block, casting aluminum ash, aluminum electrolysis flue ash, dirty material, adsorbed pitch alumina, thermal insulation filler and other wastes, the above wastes treated by this device can regenerate fluoride salt, alumina, Make it reused in the production of aluminum electrolysis. (2) Background technology [0002] At present, the smelting of metal aluminum in various countries in the world is mainly produced by the molten salt electrolysis process of Hall-Elu method, because the anode and cathode of the electrolytic cell are made of carbon products, and due to the effect of molten salt and magnetic fie...

Claims

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Application Information

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IPC IPC(8): C01B7/00C01B9/08C22B1/10C22B7/00C25C3/06
CPCY02P10/20
Inventor 衣庆波陈德元刘毅斌王兰李玉成曲爱民张并立姜宝伟张颖王德辉马明启岳增利佟利华王旸刘伟王庆华付天宝邵君张静杨和
Owner 抚顺铝厂科学研究所
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