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A beneficiation process for improving the quality and reducing silicon of iron concentrate

A technology of iron concentrate and process, which is applied in the field of beneficiation process for improving the quality of iron concentrate and reducing silicon, which can solve the problems of failing to meet the requirements of pipeline transportation, resource loss, and high silicon grade, so as to improve production efficiency and reduce environmental pollution , the effect of low requirements

Active Publication Date: 2017-01-11
YUXI DAHONGSHAN MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid development of my country's industrialization, the demand for mineral resources is increasing day by day, but in the process of utilization of mineral resources, the loss and waste of resources are also quite serious, which has brought many adverse effects on environmental protection and smelting production
Some iron concentrates have high iron grades, but also high silicon grades, and the grinding fineness -200 mesh accounts for 70~75%, which cannot meet the requirements of pipeline transportation

Method used

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  • A beneficiation process for improving the quality and reducing silicon of iron concentrate
  • A beneficiation process for improving the quality and reducing silicon of iron concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The iron grade is 58%, the silicon grade is 10%, and the iron concentrate with a particle size of -200 mesh accounts for 72% is finely ground to the ore powder with a particle size of -325 mesh accounting for 80%. The ore powder after grinding is magnetically separated by a CTB / N / S-1230 magnetic separator with a magnetic induction intensity of 800T to obtain a section of weak magnetic concentrate and a section of weak magnetic tailings. A section of weak magnetic tailings is magnetically separated by a SLon-2000 magnetic separator with a magnetic induction intensity of 12000T to obtain a section of strong magnetic concentrate and a section of strong magnetic tailings. The first stage of weak magnetic concentrate is magnetically separated by CTB / N / S-1230 magnetic separator with a magnetic induction intensity of 1000T to obtain the second stage of weak magnetic concentrate and the second stage of weak magnetic tailings, and the second stage of weak magnetic tailings is ret...

Embodiment 2

[0043] The iron grade is 60%, the silicon grade is 9%, and the iron concentrate with a particle size of -200 mesh accounts for 75% is finely ground to a particle size of -325 mesh and accounts for 80% of the ore powder. The ore powder after grinding is magnetically separated by a CTB / N / S-1024 magnetic separator with a magnetic induction intensity of 1000T to obtain a section of weak magnetic concentrate and a section of weak magnetic tailings. A section of weak magnetic tailings is magnetically separated by a SLon-1500 magnetic separator with a magnetic induction intensity of 14000T to obtain a section of strong magnetic concentrate and a section of strong magnetic tailings. The first stage of weak magnetic concentrate is magnetically separated by a CTB / N / S-1024 magnetic separator with a magnetic induction intensity of 1200T to obtain the second stage of weak magnetic concentrate and the second stage of weak magnetic tailings, and the second stage of weak magnetic tailings is r...

Embodiment 3

[0045] The iron grade is 59%, the silicon grade is 8%, and the iron concentrate with a particle size of -200 mesh accounts for 70% is finely ground to the ore powder with a particle size of -325 mesh accounting for 80%. The ore powder after grinding is magnetically separated by a CTB / N / S-924 magnetic separator with a magnetic induction intensity of 900T to obtain a section of weak magnetic concentrate and a section of weak magnetic tailings. A section of weak magnetic tailings is magnetically separated by a SLon-1000 magnetic separator with a magnetic induction intensity of 10000T to obtain a section of strong magnetic concentrate and a section of strong magnetic tailings. The first stage of weak magnetic concentrate is magnetically separated by a CTB / N / S-924 magnetic separator with a magnetic induction intensity of 800T to obtain the second stage of weak magnetic concentrate and the second stage of weak magnetic tailings, and the second stage of weak magnetic tailings is retur...

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Abstract

The invention discloses a mineral processing process for improving the quality and reducing silicon of iron ore concentrate. The process comprises the following steps: finely grinding raw ores to obtain ore powder or ore pulp of which the ore powder or ore pulp with the granularity of 325 meshes accounts for 80%, performing magnetic separation by using a 800-1000T magnetic separator to obtain a section of inferior fine magnetite concentrate and a section of inferior magnetic tailing, performing magnetic separation on the section of inferior magnetic tailing by using a 10000-14000T magnetic separator to obtain a section of high fine magnetic concentrate and a section of high magnetic tailing, performing magnetic separation on the section of inferior fine magnetite concentrate by using a 800-1200T magnetic separator to obtain two sections of inferior fine magnetite concentrate and two sections of inferior magnetic tailing, feeding back the two sections of inferior magnetic tailing to an ore grinding procedure for fine grinding, and performing magnetic separation on the section of high fine magnetic concentrate by using a 6000-10000T magnetic separator to obtain two sections of high fine magnetite concentrate and two sections of high magnetic tailing; and combing the two sections of inferior fine magnetite concentrate and the two sections of high fine magnetite concentrate to obtain total fine concentrate, and combining the section of high magnetic tailing and the two sections of high magnetic tailing to obtain total tailing. By adoption of the process, the grade of the iron ore concentrate can be increased by about 8.5%, the grade of a silicon product can be reduced by about 6.5%, the fineness of the iron ore concentrate can be improved, the abrasion of a conveying pipeline can be reduced, and the process is short in process procedure, low in operation cost and applicable to industrial popularization and application.

Description

technical field [0001] The invention belongs to the technical field of mineral engineering, and in particular relates to a beneficiation process for improving the quality and reducing silicon of iron concentrate. Background technique [0002] Mineral resources are an extremely important material basis for human development and survival, and are non-renewable and irreplaceable in the short term. With the rapid development of my country's industrialization, the demand for mineral resources is increasing day by day, but in the process of utilization of mineral resources, the loss and waste of resources are also quite serious, which has brought many adverse effects on environmental protection and smelting production. Some iron concentrates have high iron grades, but also high silicon grades, and the grinding fineness -200 mesh accounts for 70~75%, which cannot meet the requirements of pipeline transportation. With the deepening of the development and utilization of mineral reso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03C1/00B03B1/00
Inventor 覃澧洋董慧琳温海滨邓琴李鲜
Owner YUXI DAHONGSHAN MINING