Method for recovering ilmenite from iron separation tailings

Abstract

The invention discloses a method for recovering ilmenite from iron separation tailings. The method comprises the following steps that S1, strong-magnetic tailing discarding is carried out on the iron separation tailings to obtain strong magnetic concentrate and strong magnetic tailings; S2, the obtained strong magnetic concentrate is subjected to closed-circuit ore grinding; S3, the raw materials obtained through ore grinding are reselected to obtain reselected concentrate and reselected tailings; S4, the obtained reselected concentrate is subjected to flotation desulfurization treatment to obtain flotation concentrate and sulfur concentrate; S5, the obtained flotation concentrate is subjected to iron removal to obtain magnetite concentrate and weak magnetic concentrate; and S6, the weak magnetic concentrate is subjected to roughing and scavenging to obtain titanium concentrate. The method can improve the grade of the titanium concentrate, improve the recovery rate of the titanium concentrate, improve the resource utilization rate and reduce environmental pollution.

Description

technical field [0001] The invention relates to the technical field of ore dressing, in particular to a method for recovering ilmenite from iron dressing tailings. Background technique [0002] my country's ilmenite resources are rich and relatively concentrated, mainly primary ilmenite, and placer only accounts for a small part, accounting for less than 10%. Primary ilmenite is mainly distributed in the Panxi region of my country and Chengde, Hebei, etc. It mainly exists in the form of vanadium-titanium magnetite, and at the same time contains some ilmenite. In the past, due to technical limitations, this part of ilmenite could not be effectively recovered, and it was often discharged into the tailings pond as tailings. Later, with the development of strong magnetic equipment The emergence and development of flotation technology have gradually formed an ilmenite recovery technology based on strong magnetic flotation, that is, firstly use strong magnetic equipment to pre-throw...

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Problems solved by technology

[0003] However, the recovery rate of titanium concentrate in the traditional flotation process is still too low, the resources cannot be fully utilized, affecting the output, and a large amount of flotation reagents need to be invested, which is costly and expensive The environmental pollution is relatively large. With the emphasis of the Chinese government on environmental protection and the enhancement of people's awareness of environmental protection, there is an urgent need to develop a new titanium selection process on the basis of ensuring resource utilization.

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