Micro-fine particle hematite selective flocculation flotation method

A hematite and selective technology, which is applied in the field of selective flocculation flotation of fine-grained hematite, can solve the problems of low grade and low recovery rate of flotation concentrate, so as to solve production difficulties, improve grade and recovery rate , Reduce the effect of desliming operation

Active Publication Date: 2019-03-29
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of low grade and low recovery rate of hematite flotation concentrate in the prior art, and provides a selective flocculation flotation method for fine-grained hematite, which can reduce desliming operations At the same time, it ensures the effective separation of the target minerals, alleviates the problems of low grade and low recovery rate of hematite flotation concentrate, and enables the industrial production of fine-grained hematite flotation to go smoothly

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  • Micro-fine particle hematite selective flocculation flotation method

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Embodiment 1

[0036] A kind of fine particle hematite selective flocculation flotation method of the present invention, carry out according to the following steps:

[0037] S1. Grinding the hematite into a slurry, the slurry flows into the stirring tank, first adding the hematite flocculant and stirring; specifically, starch is used as the hematite flocculant and inhibitor in this embodiment, and the starch includes but Not limited to corn starch, sweet potato starch, wheat starch, tapioca starch and the modified products of the aforementioned starches; the dosage A of hematite flocculant and inhibitor starch is 500-5000g / t raw ore;

[0038]S2, adding gangue flocculants, collectors and foaming agents to adjust the slurry, and the slurry after the adjustment flows into the flotation machine for hematite reverse flotation to obtain hematite coarse concentrate; specifically, this In the embodiment, polyoxyethylene is used as the gangue flocculant, dodecylamine is used as the collector, and ter...

Embodiment 2

[0046] A kind of selective flocculation flotation method of fine-grained hematite in this embodiment is basically the same as in Embodiment 1. Further, the molecular weight of polyethylene oxide in this embodiment is 300-12 million, which can realize the detection of gangue minerals. The effective flocculation and good selectivity can effectively reduce the impurity content in the flocs, and the use effect is excellent. Specifically, in this embodiment, the molecular weight of polyethylene oxide is 3 million; and in this embodiment, adding red After stirring the iron ore flocculant for 2 minutes, add the gangue flocculant, collector and foaming agent.

[0047] In this embodiment, the amount A of the hematite flocculant and the amount B of the gangue flocculant are controlled as Wherein coefficient a is (6-30), and the consumption C1 of coarse selection collector and the consumption A of hematite flocculant control in S2 step are Wherein the coefficient b is (10-25), the coe...

Embodiment 3

[0050] A kind of fine-grained hematite selective flocculation flotation method of the present embodiment is basically the same as embodiment 2, the difference is that the molecular weight of polyoxyethylene in the present embodiment is 12 million, in the present embodiment adding hematite After stirring the flocculant for 1 min, add gangue flocculant, collector and foaming agent.

[0051] The consumption A of hematite flocculant starch in the present embodiment is 3000g / t raw ore; The roughing foaming agent dosage D1 in the step is 26g / t raw ore; the sweeping collector dosage C2 in the S3 step is 200g / t raw ore; the sweeping foaming agent dosage D2 in the S3 step is 20g / t raw ore; The amount A of the ore flocculant and the amount B of the gangue flocculant are controlled as In the S2 step, the consumption C1 of the coarse collector and the consumption A of the hematite flocculant are controlled as In step S2, the ratio of the amount D1 of the roughing foaming agent to the ...

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Abstract

The invention discloses a micro-fine particle hematite selective flocculation flotation method, and belongs to the field of hematite mineral processing. The micro-fine particle hematite selective flocculation flotation method comprises the following steps that S1, hematite is levigated to form ore pulp, the ore pulp flows into a stirring tank, and a hematite flocculating agent is firstly added tobe stirred; S2, a gangue flocculating agent, a collector and a foaming agent are added for pulp mixing, and the ore pulp obtained after pulp mixing flows into a flotation machine to be subjected to hematite reverse flotation to obtain hematite coarse concentrate; S3, a collector and a foaming agent are continuously added to be used in the flotation machine to conduct scavenging on rougher tailings, and hematite scavenging middlings and tailings are obtained; and S4, the hematite coarse concentrate is finely selected to obtain hematite concentrate and finely-selected medium ore. The micro-fineparticle hematite selective flocculation flotation method overcomes the defects of low hematite flotation concentrate grade and low recovery rate in the prior art, effective separation of objective mineral is guaranteed while desliming operation is reduced, and the problems of the low hematite flotation concentrate grade and the low recovery are solved.

Description

technical field [0001] The invention relates to the technical field of hematite mineral processing, in particular to a selective flocculation and flotation method for fine-grained hematite. Background technique [0002] China's iron ore resources are abundant but not rich, and they have the characteristics of low-grade raw ore, complex components, and fine particle size. At present, the refractory iron ore in my country has the largest reserves of hematite, reaching 95.93×10 8 t, accounting for 72.55% of complex refractory ores, while the utilization rate is only 6.27%. With the further development and utilization of refractory iron ore resources in our country, the development of low-grade fine-grained hematite is increasingly becoming the focus. [0003] Flotation is an important means of processing fine-grained hematite. Usually, the industry adopts flocculation of certain minerals in the mixture, and then separates the unflocculated fine-grained minerals through deslim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D3/06B03D1/008B03D103/02
CPCB03D1/008B03D3/06B03D2201/002B03D2203/02
Inventor 李明阳代献仁胡义明皇甫明柱张颖异
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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