Metallurgical fluxing agent for serpentinite mine serpentinite type stripped waste rock and preparation method thereof

Abstract

The invention provides a metallurgical fluxing agent for serpentinite mine serpentinite type stripped waste rock and a preparation method thereof. The method comprises the following steps of: performing hand sorting, attribute crushing and screening on a serpentinite mine serpentinite type stripped waste rock raw material to obtain a rough serpentinite fragment; and scrubbing, washing and removing dust to obtain a refined serpentinite fragment serving as the metallurgical fluxing agent, wherein the particle size of the refined serpentinite fragment is 5 to 80mm, and the refined serpentinite fragment comprises the following chemical components in percentage by weight: more than or equal to 35 percent of MgO, more than or equal to 35 percent of SiO2, less than or equal to 1.5 percent of Al2O3 and less than or equal to 0.15 percent of S. By the method, the current situation that the serpentinite mine stripped waste rock is mainly piled up at present can be changed, and the types and supply sources of the metallurgical fluxing agent are expanded; the prepared refined serpentinite fragment metallurgical fluxing agent has the performance of the conventional fluxing agent and also has the advantages of small adding amount, high magnesium content, few harmful ingredients, low environmental pollution and the like; and a prepared building plastering material is safe and environment-friendly and has high fire resistance.

Description

technical field [0001] The invention relates to the technical field of resource utilization of chrysotile mine stripping waste rocks, in particular to a method for preparing metallurgical flux from serpentine-type stripping waste rocks of chrysotile mines, and the metallurgical flux prepared by the method. Background technique [0002] In the mining process of ultrabasic rock-type chrysotile mines, in order to expose and mine ores, the surrounding rock serpentinite around the chrysotile ore body and the non-ore serpentinite in the ore body are stripped and removed to form a chrysotile mine Serpentinite-type exfoliated waste rock. [0003] my country is the largest steel producing country in the world. Benefiting from the domestic demand, my country's steel production has increased year by year in recent years. In order to ensure early slag formation in the steelmaking process, it is necessary to add a certain amount of steelmaking flux, such as fluorite, vanadium, dolomite,...

AI Technical Summary

Problems solved by technology

At present, metallurgical fluxes have exposed many problems in the steelmaking process, such as the release of harmful F elements by fluorite at high temperatures, the high melting point of vanadium clay is not ideal for slag removal, and the continuous slag removal effect of iron-phosphorus fluxes is poor, etc.