Efficient utilization process of aluminum ash of electrolytic aluminum factory

Abstract

The invention discloses an efficient utilization process of aluminum ash of an electrolytic aluminum factory. The efficient utilization process comprises the following steps that separately crushing and ball-milling the aluminum ash and waste aluminum ash are carried out; 30 to 50 parts by weight of aluminum ash, 5 to 15 parts by weight of waste aluminum ash, 40 to 60 parts by weight of modified and calcined carbide slag and 1.0 to 3.0 parts by weight of boric acid or diboron trioxide are uniformly mixed, then pressing the mixture into granules with the diameter of about 45 to 50 mm is carriedout; and sintering the granules at the high temperature of 1300 to 1500 DEG C for 20 to 80 minutes is carried out, naturally cooling, and crushing are carried out to obtain refining slag. The refining slag can be used for refining molten steel, can deoxidize and desulfurize, and has significant purification effect on the molten steel; and meanwhile, the refining slag is simple in manufacturing process, solid waste is mostly adopted as a raw material, the solid waste utilization rate is ultrahigh, the problems of random waste discharge and pollution of enterprises can be greatly solved, and solid waste and pollutant resource recycling capacity is improved.

Description

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AI Technical Summary

Benefits of technology

This patented technology involves creating new types of material called Calcium Carbonate (CaC2) that could effectively use it without being burnt out beforehand. By placing this type of material into nitrogen gas under certain conditions, they were able to efficiently remove sulfur from molasses while also producing valuable metals like magnesium oxides. These technical results make them more efficient than previous methods such as burning Al2O3 alone.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the efficiency of producing pure alkaline earth from secondary sources such as spent acid liquid plasma circuitry residue (ALPL), which includes various forms like amalgam sinterings, cathode ray tubular crystals, tungsten silicate particles, tantalite flakes, etc., depending upon their specific chemical compositions and particle sizes. These contaminants pose environmental concerns and require proper disposal methods while minimizing impact on both civilian resources and national security interests.