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Column Cationic Reverse Flotation Process for Micro-grained Hematite

A technology of hematite and fine particles, applied in flotation, solid separation, etc., can solve the problems of complex flotation process and reagent system, high-temperature flotation of anion reverse flotation process, large equipment footprint, etc., and achieve reduction The grade of flotation tailings, the suppression effect is good, and the effect of reducing the occupied area

Inactive Publication Date: 2019-03-01
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 Cationic Reverse Flotation Process for Micro-grained Hematite
  • Column Cationic Reverse Flotation Process for Micro-grained Hematite
  • Column Cationic Reverse Flotation Process for Micro-grained Hematite

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Experimental program
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Effect test

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 for cationic reverse flotation is: the amount of starch added in the primary roughing is 1300g / t, a...

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Abstract

The invention discloses a column-type cation reverse flotation process for fine-grained hematite. The flotation equipment adopted is a filled microbubble countercurrent contact type flotation column. The fine-grained hematite first enters the mixing tank, adds chemicals to adjust the slurry and mixes it, and then pumps it to the primary roughing flotation column for primary roughing, and the foam product of the primary roughing flotation column enters the secondary roughing flotation The column is subjected to secondary roughing, the bottom flow of the first roughing flotation column and the second roughing flotation column are combined and then enters the selection flotation column for selection, and the bottom flow of the selection flotation column is the concentrate; the second roughing The foam product of the flotation column enters the scavenging flotation column for scavenging, and the underflow of the scavenging flotation column is combined with the foam product of the selected flotation column, and then returned to the secondary roughing flotation column by the pump; The foam product of the column is tailings. The process simplifies the flotation process and reagent system of hematite, realizes flotation at normal temperature, and reduces 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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Patent Type & Authority Patents(China)
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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