Chlorination purification process of slag

Abstract

The invention discloses a purification process of mineral slag by a chlorination process. The process comprises the following steps: carrying out low-temperature chlorination and recovering a solid product after reaction through a cyclone separation device; recovering a gaseous product through a first dust collector; carrying out high-temperature chlorination and recovering the gaseous product after reaction through a condenser; and settling the solid product after reaction through a second dust collector to form dust collecting slag. According to the process disclosed by the invention, elements in associated lean ores can be effectively separated to obtain a required corresponding product, so that the utilization mode of lean ore resources is enriched. According to the process disclosed by the invention, a chromium trichloride product of an industrial grade can be obtained, so that a problem of treating chromium slag after extraction of resources is avoided.

Description

technical field

[0001] The invention relates to the field of chemical smelting of minerals, in particular to a chlorination purification process of slag. Background technique

[0002] At present, there is a new situation in the development of vanadium and titanium resources in the Panxi area, that is, the resource distribution in the Hongge ore veins has changed greatly from the previous veins, and the most prominent is that the chromium content has increased greatly. After mining, the slag still contains available vanadium, chromium, iron and titanium resources. If the ironmaking process is directly used, the vanadium, titanium and chromium resources will not be utilized, and the blast furnace slag will contain a relatively high concentration of chromium Oxides cannot be stacked directly, which will greatly increase the cost of post-processing. Contents of the invention

[0003] The invention overcomes the shortcomings of the prior art and provides a chlorination purific...

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