Comprehensive utilization process of rutile middlings

Abstract

A comprehensive utilization process of rutile middlings comprises the following steps that the rutile middlings are ground, and first ore pulp is obtained; the first ore pulp is filtered to obtain first filter residues, and then the first filter residues are dried to obtain sample ore; a first reducing agent is added into the sample ore to obtain reduced products; the reduced products are subjected to ore grinding and then manufactured into second ore pulp; the second ore pulp is subjected to magnetic separation, and iron ore concentrates and non-magnetic products are obtained; the non-magnetic products are subjected to gravity sorting to obtain decarbonizing products; the decarbonizing products are dried, then the decarbonizing products and alkaline matter are subjected to fused salt decomposition, and silicate and metatitanic acid salt are obtained; the products obtained after fused salt decomposition are leached, and filter liquor and second filter residues are obtained through filtering; the second filter residues are subjected to acid pickling and then filtered, and third filter residues are obtained; the third filter residues are subjected to acid solution, a second reducing agent is added, and solid products are obtained through filtering; and the solid products are roasted, and high-grade titanium dioxide is obtained. According to the comprehensive utilization process, the comprehensive utilization rate of the rutile middlings can be effectively increased.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a process for comprehensive utilization of rutile middle ore. Background technique [0002] Judging from the current production, rutile mines in southern Shaanxi generally use combined processes such as gravity separation, magnetic separation, and electric separation to recover rutile. However, the rutile resources in southern Shaanxi have the mineralogical characteristics of complex ore composition and fine particle size distribution of valuable minerals. Conventional gravity separation, magnetic separation, and electric separation processes have to produce a large amount of rutile in order to select high-grade rutile concentrates. Medium ore, because the price of the rutile medium ore is relatively low, the concentrator generally adopts off-site natural stockpiling to dispose of this part of the product. In addition, this type of rutile medium ore contains not only ...

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Problems solved by technology

In addition, this type of rutile medium ore contains not only rutile, but also a large amount of magnetite, hematite and quartz. The stockpiling and backlog of products cause a lot of waste of valuable resources

For a long time, the idea of ​​mineral processing workers to deal with this kind of products is generally to grind the rutile medium ore to a certain size and then use flotation process to process it. selection index

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