Method for producing multicomponent alloy from coal gangues and various solid wastes

Abstract

The invention relates to a method for producing a multicomponent alloy from coal gangues and various solid wastes. The method is characterized in that reasonable ratios of contents of various elements are determined by adding other industrial wastes into the coal gangues containing main components of Al2O3 and SiO2 and further containing Fe2O3, CaO, MgO, Na2O, K2O, P2O5, SO3 and trace rare elements (gallium, vanadium, titanium and cobalt) that have different amounts, and the coal gangues replace such raw materials as silica and steel cuttings necessary for producing the conventional multicomponent alloy. According to the method, several wastes are thermally mixed and melted in a refining furnace by using beneficial elements in waste slag and waste powder that are produced during smelting production of silicon iron under heat of molten iron in a submerged arc furnace, so that a multicomponent alloy product meeting the requirements of a user is produced. By the use of the method for producing the multicomponent alloy, 0.01 to 0.015 ton of the coal gangues can produce one tonnage of products, so that the power consumption can be reduced by 2,000 to 3,500, 12,498.5 ton of standard coals can be saved every year, and 16,000 ton of each type of waste slag/powder can be handled. According to the method, the production cost is reduced, resources are saved, and the additional value of a product is increased; therefore, a large amount of industrial waste slag can be comprehensively used, and the aims of saving energy and reducing consumption are fulfilled.

Description

technical field [0001] The invention belongs to the field of smelting multi-element alloys, and aims at a method for producing multi-element alloys from coal gangue and other solid wastes peculiar to Ningxia. Background technique [0002] A multi-element alloy is an alloy formed of two or more metal elements. The multi-element alloy referred to in the ferroalloy industry is a multi-element alloy product based on silicon. The multi-component alloy produced by our company mainly contains Si, Ba, Ca, Al, Sr and other elements. This alloy is widely used in metallurgy, machinery manufacturing, transportation, electric power, high-speed rail and other industries. It is a high-end additive for the purification of molten metal in precision casting production. . [0003] The traditional production raw materials of this product are mainly silica, coke, steel shavings, etc., and the high temperature energy generated by the energy of the arc is used to smelt and reduce the metal eleme...

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Problems solved by technology

In the production process, the conversion of electric energy into heat energy consumes a large amount of electricity. At the same time, the recovery rate of elements in raw materials is low, resulting in waste of resources and serious environmental pollution.

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