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Control method for a variety of ore grinding media during ore grinding

A technology of grinding medium and control method, applied in grain processing, etc., can solve problems such as low grinding efficiency, waste of resources and energy, and large fluctuations in technological indicators in the beneficiation process, so as to improve grinding efficiency and reduce unit energy consumption Effect

Inactive Publication Date: 2014-02-26
CENT SOUTH UNIV
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Problems solved by technology

Grinding is the link with the highest energy consumption in the beneficiation process, and its energy consumption accounts for more than 50% of the entire beneficiation process. Moreover, with the scarcity of mineral resources, the grade of some minerals is also continuously decreasing, which leads to low grinding efficiency and low ore beneficiation process. The process index fluctuates greatly, resulting in waste of resources and energy

Method used

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  • Control method for a variety of ore grinding media during ore grinding
  • Control method for a variety of ore grinding media during ore grinding

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Embodiment 1

[0014] Example 1 The present invention can be explained in more detail through the following examples, but the present invention is not limited to the following examples.

[0015] Assume that the automatic control ball adding device contains five kinds of grinding media ball storage bins, and the diameters of the stored grinding media are 50mm, 65mm, 75mm, 90mm and 100mm respectively. According to the composition content of bornite and the particle size requirements after grinding, the mass ratio of the five grinding media is required to be 1:2.5:0.9:2.2:1.2 to achieve the best grinding efficiency. Calculate the corresponding number of the five kinds of grinding media, and put it into the count corresponding to the outlet of the buffer chamber. Turn on the power supply, the control motor of the medium channel controller and the counter at the outlet of the buffer chamber start to work, each time a grinding ball medium is discharged, the counter will be decremented by one, when...

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Abstract

The invention relates to a control method for a variety of ore grinding media during ore grinding. The method includes: firstly classifying 5 ore grinding media with different diameters according to particle size and storing them in a ball storage bin before adding them into a ball grinder, calculating the proportions of the ore grinding media with different diameters according to the nature, ore grinding particle size and ratio requirements of ore, starting an ore grinding device, conducting ore grinding for 12-15h, carrying out sampling every two hours to conduct particle size detection four times, calculating the mass of the ore grinding media according to a proportion of maximum content of particle size in the total proportion under the condition of the ore grinding particle size in the normal distribution, and converting the mass into the corresponding quantity of the ore grinding media with different diameters. According to different effects of the ball grinding media with different thicknesses on minerals, the method provided in the invention adopts a variety of ball grinding media to conduct ball grinding on the minerals in two stages. The needed ball grinding media are re-calculated every time according to the detection results, so that the ratio of the ore grinding media added into the ball grinder can reach an optimal state, thus improving the ore grinding efficiency of the grinder and reducing the unit energy consumption of the grinder.

Description

technical field [0001] The invention relates to a method for controlling the addition of ore grinding media in the beneficiation process, in particular to a method for automatically adding ore grinding media to a ball mill during segmental control. Background technique [0002] In order to improve the grade of the concentrate during the beneficiation process, it is necessary to separate the target minerals and gangue minerals. In order to realize monomer separation, grinding will be added in the beneficiation process. Grinding is the link with the highest energy consumption in the beneficiation process, and its energy consumption accounts for more than 50% of the entire beneficiation process. Moreover, with the scarcity of mineral resources, the grade of some minerals is also continuously decreasing, which leads to low grinding efficiency and low ore beneficiation process. The process index fluctuates greatly, resulting in waste of resources and energy. According to differ...

Claims

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Application Information

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IPC IPC(8): B02C25/00
Inventor 胡燕瑜罗瑞琼吴显金朱利香
Owner CENT SOUTH UNIV
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