Method for recycling rubidium from iron tailings

A technology of iron tailings and magnetic separation tailings, applied in the direction of improving process efficiency, etc., can solve the problems that tailings can only be used as building materials and the comprehensive utilization rate of iron tailings is low

Inactive Publication Date: 2014-12-03
湖南鑫生矿冶废弃物综合利用科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for recovering rubidium from iron tailings, so as to solve the technical problems in the prior art that the comprehensive utilization rate of iron tailings is low and tailings can only be used as building materials

Method used

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  • Method for recycling rubidium from iron tailings
  • Method for recycling rubidium from iron tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1) Classification: Classify the iron tailings to obtain the first mineral of +10 microns;

[0043] 2) Flotation: Sequentially carry out sulfur removal flotation and recovery flotation on the first mineral to obtain rubidium concentrate; sulfur removal flotation: add 80g / ton to the magnetic separation tailings in sequence The butyl xanthate and 100g / ton pine alcohol oil are used for one rough cleaning and two sweeps, and then four blank separations are carried out to obtain sulfur concentrate and second tailings;

[0044] Recovery flotation: Slurry the second tailings to pH 2, add 400g / ton of water glass and collector in sequence, wherein the collector consists of 300g / ton of stearylamine acetate and 100g / ton of terpineol oil Composition, one rough sweep and two sweeps, followed by four blank beneficiation to obtain rubidium concentrate;

[0045] 3) Roasting: adding sodium chloride to the rubidium concentrate and roasting at 900°C to obtain a roasted product;

[0046] ...

Embodiment 2

[0048] 1) Classification: Firstly, the iron tailings are classified by a hydrocyclone to obtain -400 mesh minerals, and then the minerals are classified again to obtain the first minerals of +10 microns, and the rubidium grade in the first minerals is 0.015%.

[0049] 2) Magnetic separation: After the first mineral is slurried, a rough and a sweep magnetic separation is carried out, the magnetic field strength is 15000Gs, the tailings obtained are magnetic separation tailings, and the total iron grade in the magnetic separation tailings is 0.9%.

[0050] 3) Desulfurization flotation: Add 100g / ton of ethyl xanthate and 100g / ton of terpineol oil to the magnetic separation tailings in order to carry out a rough sweep and two sweeps, and then perform four blank separations to obtain sulfur concentrate and the second Second tailings;

[0051] 4) Recovery flotation: Slurry the second tailings until the pH is 2, add 400g / ton of water glass and collector in sequence, wherein the colle...

Embodiment 3

[0057] 1) Classification: Firstly, the iron tailings are classified by a hydrocyclone to obtain -400 mesh minerals, and then the minerals are classified again to obtain the first minerals of +10 microns, and the rubidium grade in the first minerals is 0.02%.

[0058] 2) Magnetic separation: After the first mineral is slurried, it is subjected to rough and sweep magnetic separation, the magnetic field strength is 18000Gs, the tailings obtained are magnetic separation tailings, and the total iron grade in the magnetic separation tailings is 0.8%.

[0059] 3) Desulfurization flotation: add 200g / ton of ethyl xanthate and 150g / ton of terpineol oil to the tailings of magnetic separation in order to carry out a rough sweep and two sweeps, and then carry out four blank separations to obtain sulfur concentrate and the second Second tailings;

[0060] 4) Recovery flotation: Slurry the second tailings to pH 3, add 800g / ton of water glass and collector in sequence, wherein the collector c...

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Abstract

The invention provides a method for recycling rubidium chloride from iron tailings. The method comprises the following steps of: classification: the iron tailings are classified to obtain a first mineral of +10 microns; flotation: the flotation is performed for the first mineral to obtain rubidium concentrate; roasting: the rubidium concentrate is roasted to obtain a roasting product; the leaching and the extraction-back extraction are performed for the roasting product in sequence to obtain a water phase as a rubidium ore solution. The flotation at least comprises sulfur removal flotation and recycling flotation which are performed in sequence; and each of the sulfur removal flotation and the recovery flotation comprises one time of rough concentration, two times of scavenging and four times of concentration. The method, through classification of the iron tailings, can obtain the mineral with the particle size of +10 microns, and the rubidium accumulates in the mineral with the particle size; and the content of the rubidium is 8-10 times higher than that of the rubidium in the raw material of iron tailings, so that the subsequent separation and purification treatment is facilitated.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of iron tailings, in particular to a method for recovering rubidium from iron tailings. Background technique [0002] The molecular formula of rubidium chloride is RbCl, a white crystal, and there are sodium chloride octahedral crystals and cesium chloride cubic crystals. The relative density is 3.72. In the gaseous state, RbCl is a diatomic molecule, and the bond length increases when it is in the cubic crystal system. At present, rubidium is extracted as a by-product of extracting lithium from lepidolite, and the extraction process is relatively mature. [0003] At present, most of the comprehensive utilization of iron tailings only recycles the iron in it. The secondary tailings after iron recovery are basically used as bricks or building materials. The added value of the product is low, and the comprehensive utilization rate of iron tailings is low. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B26/10C22B7/00
CPCY02P10/20
Inventor 陈述明王杨
Owner 湖南鑫生矿冶废弃物综合利用科技有限公司
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