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Type selection method of industrial vertical stirring mill and type selection test closed circuit fine grinding system

A stirring mill and vertical technology, which is applied in the selection method of industrial vertical stirring mills and the closed-circuit fine grinding system of the selection test, which can solve the problems of high data in the selection process, dead angles, and errors in selection results. , to achieve the effect of simple and convenient operation, simple and compact structure, accurate and reliable measurement

Active Publication Date: 2019-04-05
湖南金磨科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) Due to the batch grinding, there is a certain gap between the agitator of the vertical stirring mill and the bottom of the cylinder, so there will be a dead angle; The mining effect is also different, which will cause the particle size distribution of the grinding product to be different from that of the industrial site, the data in the selection process is too high, and the selected industrial mill model is too large
[0005] 2) Grinding power is measured by using a power meter to measure the power P at the input end of the motor 0 (that is, the total power) to estimate, rather than the useful power P directly consumed by the minerals to be ground 有效 , due to the low efficiency of the motor and reducer transmission system of the experimental mill, P 0 much larger than P 2 , resulting in large errors in the selection results

Method used

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  • Type selection method of industrial vertical stirring mill and type selection test closed circuit fine grinding system
  • Type selection method of industrial vertical stirring mill and type selection test closed circuit fine grinding system
  • Type selection method of industrial vertical stirring mill and type selection test closed circuit fine grinding system

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Experimental program
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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the type selection test closed-circuit fine grinding system of this embodiment includes an experimental vertical agitating mill 3 and a circulating device connected to form a closed-circuit circulating grinding system. The circulating device includes a slurry circulating tank 4 and a slurry circulating pump 6. The experimental type The overflow port on the upper part of the cylinder of the vertical mixing mill 3 is connected with the feed port of the slurry circulating tank 4, the discharge port of the slurry circulating tank 4 is connected with the inlet of the slurry circulating pump 6, and the outlet of the slurry circulating pump 6 is connected to the test type The vertical agitating mill 3 is connected to the feed inlet at the lower part of the cylinder, and the closed-circuit fine grinding system for the selection test is also equipped with a power measuring device for measuring the power of the agitating shaft of the experimental vertical...

Embodiment 2

[0044] The grinding object of the industrial vertical stirring mill to be selected in this embodiment is molybdenum ore, which requires fine grinding to a target particle size of -325 mesh, and the target particle size mineral content is 75%.

[0045] The specific steps of the selection method are as follows:

[0046] (A) Prepare the type selection test closed circuit fine grinding system, the type selection test closed circuit fine grinding system is the type selection test closed circuit fine grinding system of Example 1;

[0047] (B) The ore powder to be ground is prepared into a slurry with a concentration of 65%, and the slurry is added to the experimental vertical agitating mill 3 in an amount of 120% of the cylinder volume of the experimental vertical agitating mill 3;

[0048] The specific steps of step (B) are:

[0049] 1) Ball allocation: Add the previously weighed and prepared media balls into the 9L experimental vertical agitating mill 3. The filling rate of the media balls ...

Embodiment 3

[0062] The grinding object of the industrial vertical agitating mill to be selected in this embodiment is iron ore, and it is required to be finely ground to a target particle size of -400 mesh, and the target particle size mineral content is 95%.

[0063] The specific steps of the selection method are as follows:

[0064] (A) Prepare the type selection test closed circuit fine grinding system, the type selection test closed circuit fine grinding system is the type selection test closed circuit fine grinding system of Example 1;

[0065] (B) The ore powder to be ground is prepared into a slurry with a concentration of 65%, and the slurry is added to the experimental vertical agitating mill 3 in an amount of 130% of the cylinder volume of the experimental vertical agitating mill 3;

[0066] The specific steps of step (B) are:

[0067] 1) Ball allocation: add the previously weighed and prepared media balls into the 50L experimental vertical agitating mill 3, the filling rate of the media ...

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Abstract

The invention discloses a model selection method for an industrial type vertical stirring mill and a model selection test closed-circuit fine milling system. The model selection method comprises the following steps: preparing a model selection test closed-circuit fine milling system, mixing ore slurry, feeding the slurry, performing an ore milling test, repeatedly sampling, calculating according to the content of minerals of the target particle size in the samples and the fine milling consumed power, drawing a unit energy consumption curve, and calculating the required power of an industrial vertical stirring mill of a model to be selected. The model selection test closed-circuit fine milling system comprises a test type vertical stirring mill and a circulating device which are connected to form a closed-circuit circulation ore milling system, and the model selection test closed-circuit fine milling system is provided with a power determination device for determining the power of a stirring shaft of the test type vertical stirring mill. The invention is applicable to model selection of industrial type vertical stirring mills for iron ores, molybdenum ores, copper ores, lead-zinc ores, gold ores and other metal minerals, and has the advantages of simple and convenient operation, small error and the like.

Description

Technical field [0001] The invention relates to the technical field of mineral processing, in particular to a type selection method of an industrial vertical stirring mill and a type selection test closed-circuit fine grinding system. Background technique [0002] As the mineral resources available for development and utilization tend to be poor, fine, and miscellaneous, fine-grained refractory minerals have gradually become the main body of mineral resources to be processed, and vertical mixing mills with high grinding efficiency, low energy consumption and small footprint are gradually replacing The ball mill becomes the main equipment for the fine grinding of fine minerals. How to determine the power requirements and the specifications of industrial mills through experimental methods is the key to reducing investment costs and achieving energy saving and consumption reduction for industrial vertical stirring mills. Traditional selection methods (such as Bond method) are no lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28B02C17/16
CPCB02C17/16G01N1/286G01N2001/2866
Inventor 肖骁张国旺赵湘黄礼龙石立龙渊李文明刘瑜桑艳伟
Owner 湖南金磨科技有限责任公司
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