Dry and wet type cyclic magnetic separation method

A dry-wet type, magnetic separation technology, applied in the field of magnetic separation, can solve the problems of large footprint, inconvenient management, and long process, and achieve the effect of small footprint, easy management, and short process

Active Publication Date: 2014-06-18
黄山市开发投资集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defects of the existing wet and dry magnetic separators, the purpose of the present invention is to provide a kind of magnetic separation capable of circulation, which can improve the utilization rate of the mixed solution or mixture of non-metallic fine particles and iron impurities in river sand and ore pulp, and the mineral The circulation channel is simple and not easy to block, and can meet the requirements of dry and wet magnetic separation. It is a dry-wet cycle magnetic separation method for closed processing of feed materials. Disadvantages such as ease of management

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  • Dry and wet type cyclic magnetic separation method
  • Dry and wet type cyclic magnetic separation method
  • Dry and wet type cyclic magnetic separation method

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Embodiment Construction

[0031] Referring to the accompanying drawings, a dry-wet circulating magnetic separation method includes the following steps:

[0032] 1) Grinding, cleaning and removing impurities. If it is dry ore, the ore should be put into a ball mill, and at least 80% of the mineral particle size is less than 0.08mm. If it is a wet slurry, it should be cleaned and removed first. The visible impurity content in the pulp should be controlled below 10%;

[0033] 2) Filter and pre-screen, pass the mineral material or pulp through the 60-400 mesh sieve in advance, and select the finer particle mineral powder or pulp;

[0034] 3), reduction roasting, for dry ore, the roasting temperature is 700-750 ℃, the added weight of reducing agent is 13-15% of the dry ore, and the roasting time is 70-90 minutes, so that the weak magnetic iron minerals become Strong magnetic magnetite;

[0035] 4) Feeding, inject the mixed mineral material or mixed pulp into the magnetic separator;

[0036] 5) Magnetic s...

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Abstract

The invention discloses a dry and wet type cyclic magnetic separation method. A dry type magnetic separation method comprises the steps of a, grinding ores; b, performing pre-screening; c, performing reducing roasting; d, feeding materials; e, performing magnetic separation through an upper magnetic separation barrel; f, enabling the upper magnetic separation barrel to rotate to clean a storehouse; g, performing magnetic separation through a lower magnetic separation barrel; h, enabling the lower magnetic separation barrel to rotate to clean the storehouse; i, performing cyclic reciprocating magnetic separation; and j, rotating to discharge slag. A wet type magnetic separation method comprises the steps of a, cleaning impurities; b, performing filtering and pre-screening; c, feeding materials; d, performing magnetic separation through an upper magnetic separation barrel; e, enabling the upper magnetic separation barrel to rotate to clean a storehouse; f, performing magnetic separation through a lower magnetic separation barrel; g, enabling the lower magnetic separation barrel to rotate to clean the storehouse; h, performing cyclic reciprocating magnetic separation; and i, rotating to discharge slag. The device adopts a unique double-barrel circulating structure; when the circulating structure rotates to different positions under the driving of a driving device, river sand or metal mortar can be cyclically separated between the two hollow barrels. The whole process of the method is automatically controlled by a circuit, so that the waste of human resources is reduced, and the problems that a separation method is complicated, a separation process is long and the like are solved.

Description

technical field [0001] The invention relates to a magnetic separation method for beneficiation, in particular to a dry-wet circulating magnetic method for selecting iron sand and removing iron impurities from river sand and ore pulp, and from the mixture or mixture of non-metal fine particles and iron impurities. Choose method. Background technique [0002] Magnetic separation is the main beneficiation method for iron ore processing. After beneficiation of metal ores, especially iron ore, the grade is improved and the impurity content is reduced, which is beneficial to the smelting process. According to our country's practice, for every 1% increase in iron concentrate grade, the blast furnace utilization factor can be increased by 2% to 3%, the coke consumption can be reduced by 1.5%, and the limestone consumption can be reduced by 2%. Many non-ferrous and rare metal minerals have different magnetic properties. When the final concentrate cannot be obtained by gravity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/12B02C21/00B02C23/08
Inventor 刘凯黄思路金灿陈一锴张卫华甘敏王芳郭德栋
Owner 黄山市开发投资集团有限公司
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