Column type positive ion reversed flotation technology of micro-fine particle hematite

A hematite and fine particle technology, applied in flotation, solid separation and other directions, can solve the problems of complex flotation process and chemical system, large equipment area, high temperature flotation in anion reverse flotation process, etc. Flotation tailings grade, reduced floor space, good inhibition effect

Inactive Publication Date: 2017-05-31
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has the disadvantages of large equipment footprint, high temperature flotation, flotation process and complex reagent system in anion reverse flotation process

Method used

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  • Column type positive ion reversed flotation technology of micro-fine particle hematite
  • Column type positive ion reversed flotation technology of micro-fine particle hematite
  • Column type positive ion reversed flotation technology of micro-fine particle hematite

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Embodiment 1

[0036] Embodiment 1: The column type cationic reverse flotation process of the micro-grained hematite adopts the following raw materials and process steps.

[0037] Raw material: select the reverse flotation feed in the hematite treatment process (stage grinding, coarse and fine classification, gravity separation-magnetic separation-reverse flotation) of Sijiaying Iron Ore Concentrator in Tangshan area. The metal minerals of the raw material are mainly hematite, magnetite, semi-pseudo-hematite, and pseudo-hematite; the gangue minerals are mainly quartz. The feed grade of reverse flotation roughing is TFe39.89%, the fineness -200 mesh accounts for 90.46%, and the pulp concentration is 35wt%.

[0038] Process steps: As shown in the figure, the flotation feed ore first enters the mixing tank to add medicine to adjust the slurry and mix. The primary roughing flotation column performs the first roughing, the foam product of the primary roughing flotation column enters the secondar...

Embodiment 2

[0039] Embodiment 2: The column type cationic reverse flotation process of the micro-grained hematite adopts the following raw materials and process steps.

[0040] Raw material: Hematite ore mined from the surface mine of Sijiaying Iron Mine in Tangshan area is selected for reverse flotation feeding in the process of stage grinding, coarse and fine classification, gravity separation-magnetic separation-reverse flotation. The mineral composition of this raw material is simple, mainly hematite and limonite, followed by magnetite, and a small amount of false and half false hematite. The gangue minerals are mainly quartz, followed by actinolite and so on. The feed grade of reverse flotation roughing is TFe42.15%, the fineness -200 mesh accounts for 92.61%, and the pulp concentration is 30 wt%.

[0041]Process step is basically the same as embodiment 1. The specific reagent system in cationic reverse flotation is: the amount of starch added in the primary roughing is 1300g / t, an...

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Abstract

The invention discloses a column type positive ion reversed flotation technology of micro-fine particle hematite; the applied flotation device is a filling type micro-bubble reverse flow contact type flotation pillar. The micro-fine particle hematite enters a stirring bucket firstly and mixes with medicament, and then pumps to a rough selection flotation pillar to perform the rough selection; a foam product of the primary rough selection flotation pillar enters a secondary rough flotation pillar to perform the secondary rough selection; the bottom flows of the primary rough selection flotation pillar and the secondary rough selection flotation pillar are combined and then enter a fine selection flotation pillar to carry out fine selection; the bottom flow of the fine selection flotation pillar is concentrate; the foam product of the secondary rough selection flotation pillar enters a sweeping flotation pillar, and the bottom flow of the sweeping flotation pillar and the foam product of the fine selection flotation pillar are combined and returned to the secondary selection rough flotation pillar by the pump; the foam product of the sweeping flotation pillar is tailings. The technology simplifies the flotation flow and drug preparation of hematite, realizes the constant temperature flotation and reduces the flotation cost.

Description

technical field [0001] The invention relates to a beneficiation process, in particular to a column-type positive ion reverse flotation process of fine-grained hematite. Background technique [0002] As a refractory iron ore resource with large reserves in my country, the study of new technologies for its high-efficiency and low-consumption comprehensive utilization of fine-grained poor hematite has become an important way to expand my country's available resources and reduce its high dependence on imported iron ore; Especially in the current severe mining market situation, it is of great practical significance to improve mine efficiency, extend mine service life, and promote the sustainable development of mines and regional economies by promoting the advancement of iron ore beneficiation technology to increase efficiency and reduce consumption. [0003] In the existing hematite reverse flotation process in our country, most of them adopt anion reverse flotation process of one...

Claims

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Application Information

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IPC IPC(8): B03D1/24
CPCB03D1/24B03D1/245
Inventor 王伟之来有邦张庆丰刘泽伟韩苗苗陈丽平
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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