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Method for improving boron concentrate grade by adopting high-gradient vertical ring magnetic separator through deironing

A boron concentrate and magnetic separator technology, which is applied in the field of low-grade uranium-boron associated ore beneficiation technology, can solve the problem of insufficient dissociation of iron and boron monomers, failure to meet uranium dissociation conditions, and poor quality of uranium concentrate. Stability and other issues, to achieve the effect of improving grindability, simplifying the re-selection process, and high comprehensive utilization rate

Active Publication Date: 2018-06-12
LIAONING SHOUGANG BORON IRON
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Problems solved by technology

The outstanding problems of this process are high grinding power consumption, low processing capacity of the mineral processing process, insufficient dissociation of iron and boron monomers, especially when the processing capacity of the mineral processing process is increased, the coarsening of the grinding particle size results in coarse particle size of the magnetic separation tailings , the dissociation conditions of uranium cannot be reached, and the quality of uranium concentrate is unstable. At the same time, due to ore depletion, the boron grade of the raw ore entering the mill is only 4-5%, and the boron grade of a section of weak magnetic tailings is only 5-6%. The second-stage weak magnetic tail is discarded after the synthesis of boron concentrate affects the grade of boron concentrate, resulting in a waste of resources

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  • Method for improving boron concentrate grade by adopting high-gradient vertical ring magnetic separator through deironing
  • Method for improving boron concentrate grade by adopting high-gradient vertical ring magnetic separator through deironing
  • Method for improving boron concentrate grade by adopting high-gradient vertical ring magnetic separator through deironing

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] Such as figure 1 Shown, the present invention comprises the following steps:

[0029] (1), the crushed 12-0mm iron grade 25.14% diboron trioxide grade 4.14% uranium grade 0.0052% raw ore material is sent to the high pressure roller mill for rolling, and the high pressure roller mill discharge adds 2-3 Double the volume of water is mixed to become pulp, and the pulp is sent to the wet screening machine, the coarse particles on the screen are mixed with the raw materials and then sent to the high-pressure roller mill for rolling, and the screened pulp is sent to the next process as ultra-fine crushed products;

[0030] (2), the ore slurry of step (1) is carried out coarse-grained tailings magnetic separation, wherein the gangue mineral containing 27.85% of the surrounding rock is used as tailings I, and the rest is magnetite concentrate I selected, magn...

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Abstract

The invention relates to the technical field of mineral processing, in particular to a method for improving the boron concentrate grade by adopting a high-gradient vertical ring magnetic separator through deironing. The method is characterized by comprising the following steps that firstly, rough boron concentrates in a pulp form are conveyed to the high-gradient vertical ring magnetic separator;secondly, the current of the high-gradient vertical ring magnetic separator in the first step is adjusted to make the background field intensity be 0.6T; and thirdly, weakly magnetic mineral verticalring concentrates adsorbed out by vertical ring media in the second step are collected as boron tailings, and vertical ring tailing pulp which is not adsorbed by the media is final boron concentrate pulp. The mineral separation processing cost is reduced, and meanwhile the comprehensive utilization level of low-grade uranium-boron-iron associated minerals is improved.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a beneficiation process of low-grade uranium-boron-iron associated ore using a high-pressure roller mill. Background technique [0002] The boron ore deposit where boron and iron are symbiotic, the main ore minerals are magnetite and boronite, followed by fibrous boronite, Suianite, and crystalline uranium ore. Iron, boron, and uranium are important raw materials for steel, chemical industry, and energy. However, the primary ore and useful minerals are finely distributed and have complex intergenerational characteristics, which cause many difficulties for the comprehensive utilization of ore. [0003] The existing beneficiation process mainly adopts two-stage grinding and classification-two-stage magnetic separation process to recover iron ore concentrate. The two-stage magnetic separation comprehensive tailings are screened into two particle sizes and then re-selected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03C1/025B03B1/00
CPCB03B1/00B03B7/00B03C1/002
Inventor 周弘强况盛阳鄂继涛张义民祝枝彬籍延广张浩靳跃栋
Owner LIAONING SHOUGANG BORON IRON
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