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Mineral dressing process for improving coarse sand content of mixed iron ore tailings and processing capacity of mill

A technology for iron ore tailings and processing capacity, which is applied in the fields of mechanical material recovery, chemical instruments and methods, solid separation, etc., can solve the problems of low coarse-grained tailings content and high cost of beneficiation methods, and reduce the amount of grinding ore. Effect

Active Publication Date: 2021-09-03
ANHUI JINRISHENG MINING
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a mineral processing process that improves the coarse sand content of mixed iron ore tailings and the processing capacity of the mill, which is used to solve the high cost of mineral processing methods in the prior art described in the background technology and the coarse-grained tailings. Low ore content, how to improve the processing capacity of the mill

Method used

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  • Mineral dressing process for improving coarse sand content of mixed iron ore tailings and processing capacity of mill
  • Mineral dressing process for improving coarse sand content of mixed iron ore tailings and processing capacity of mill

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specific Embodiment approach

[0029] Such as figure 2 ,

[0030] Belt 1 sends -30mm mixed ore raw ore into high pressure roller mill 2, and discharges it into high frequency sieve 1 3 to obtain sieve material 1 and sieve material 1; sieve material 1 is sent to magnetic One-stage magnetic separation is carried out in Separator 1 to obtain Concentrate 1 and Tailings 1; Tailings 1 flows to Magnetic Separator 2 5 for second-stage magnetic separation to obtain Concentrate 2 and Tailings 2, and Tailings 2 is coarse Grade tailings 1; Concentrate 1 and concentrate 2 are combined and returned to high-pressure roller mill 2 as ore feeding through the belt;

[0031] The underscreen material 1 flows into the pump pool 1 by itself, and is transported by the pump 7 to the magnetic separator 3 8 for three-stage magnetic separation to obtain the concentrate 3 and tailings 3; the tailings 3 are sent to the magnetic separator 4 9 Carry out four-stage magnetic separation to obtain concentrated ore four and tailings four; ...

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Abstract

The invention discloses a mineral dressing process for improving coarse sand content of mixed iron ore tailings and processing capacity of a mill, and relates to the technical field of ore dressing. After mixed iron ore is subjected to high-pressure roller milling, first-stage screening is conducted at the ore discharging position of a high-pressure roller mill; first-stage magnetic separation is performed on a first oversize material to obtain first concentrate and first tailings; the first tailings are subjected to second-stage magnetic separation to obtain second concentrate and second tailings, wherein the second tailings are first coarse-fraction tailings; and the first concentrate and the second concentrate are combined and returned to the high-pressure roller mill through a belt for ore feeding. The method has the advantages that the coarse sand content of tailings and the processing capacity of the mill can be improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of ore beneficiation, in particular to a beneficiation process for increasing the content of mixed iron ore coarse-grained tailings and the processing capacity of a mill. Background technique [0002] At present, my country is gradually implementing the tailings pond exit plan, and is committed to building tailing-free mines and green mines, which is the general trend of national policies. The beneficiation method for the recovery of mixed iron ore resources of magnetite and specularite generally adopts the stage grinding-weak magnetic field-strong magnetic field-reverse flotation process. However, the tailings obtained are all fine-grained tailings, and only part The tailings are filled underground, and most of the tailings still need to be discharged into the tailings pond. It is difficult to achieve a balance between mining and filling, which directly affects the normal production and operation of the ent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/06B03B7/00B03B1/00
CPCB03B9/06B03B7/00B03B1/00Y02W30/52
Inventor 张杰石云良章镇岳文龙谢广东郭锐唐言生谢钟声
Owner ANHUI JINRISHENG MINING
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