Pelletizing method of titanium concentrate

Abstract

The invention provides a pelletizing method of titanium concentrate. The pelletizing method includes the following steps that the titanium concentrate and a reinforcer are mixed, and an initial mixture is obtained; the reinforcer is prepared from polyvinyl alcohol, pitch and a plant adhesive; the initial mixture is pelletized in an oscillatory type forming device, and titanium concentrate formed wet particles are obtained; and the titanium concentrate formed wet particles are dried, and titanium concentrate formed dry particles are obtained. According to the hydrophobic nature of the titanium concentrate, the organic forming reinforcer completely in physical adhesion is used for pelletizing, the percentage of the prepared titanium concentrate particles with the grain diameters ranging from 3 mm to 8 mm is larger than 90%, the drop strength is larger than 5 times per meter, the problem of flying dust generated in the titanium concentrate transferring and electric furnace smelting process is effectively solved, the normal smelting rate is guaranteed, and the electric furnace equipment operating rate and the material yield are increased.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a granulation method of titanium concentrate. Background technique [0002] Titanium concentrate is generally used as raw material for smelting acid-soluble titanium slag in electric furnace, and the flotation process of titanium concentrate results in extremely poor hydrophilicity and fine particle size. Production experience shows that the pretreatment effect of titanium concentrate raw material before smelting in electric furnace is not good , currently only powder into the furnace can be used. [0003] In the actual smelting production, on the one hand, due to the too fine particle size distribution of titanium concentrate, direct smelting into the electric furnace for a long time leads to the fine powder entering the flue with the furnace gas, resulting in the blockage of the flue and furnace gas treatment system, which affects the smooth production and dust collection. ...

AI Technical Summary

Problems solved by technology

Around 2000, Ren Chaocheng and others carried out the experimental research on the forming of fine-grained titanium concentrate. The forming process mainly includes five steps: batching, mixing, moistening, pelletizing and drying; the research results show that the compressive strength can be obtained The maximum can reach 1700N / a pellet, but there are three problems: one is that the wet ore produced on site cannot be directly used (the moisture is too high to meet the requirements of pelletizing, and pre-drying treatment is required), and the other is that it needs to be added in the process means, the unit molding cost increases; the third is that the proportion of the composite binder used is too high to reach 6%, and the impurities in it will reduce the quality of the pellets

However, there are the following problems: the size of the titanium concentrate pellets obtained by the briquetting process is relatively large, which puts forward higher requirements for the subsequent electric furnace smelting control; and the comprehensive unit forming cost of the briquetting process is relatively high, and the preliminary calculation of the briquetting cost of the pellets reaches more than 120 yuan / t

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