Model selection method for industrial type vertical stirring mill and model selection test closed-circuit fine milling system

A stirring mill and vertical technology, which is used in the selection method of industrial vertical stirring mills and the field of closed-circuit fine grinding systems for selection tests, can solve the problems of high data in the selection process, errors in the selection results, and dead ends. , to achieve the effect of good work continuity, accurate and reliable measurement, simple and compact structure

Active Publication Date: 2017-05-10
湖南金磨科技有限责任公司
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  • 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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  • Model selection method for industrial type vertical stirring mill and model selection test closed-circuit fine milling system
  • Model selection method for industrial type vertical stirring mill and model selection test closed-circuit fine milling system
  • Model selection method for industrial type vertical stirring mill and model selection test closed-circuit fine milling system

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Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1 As shown, the type selection test closed-circuit fine grinding system of this embodiment includes a test-type vertical agitated mill 3 and a circulation device connected to form a closed-circuit circulation grinding system. The circulation device includes a slurry circulation tank 4 and a slurry circulation pump 6. The test-type The overflow port on the upper part of the cylinder of the vertical stirring mill 3 is connected to the feed port of the pulp circulation tank 4, the discharge port of the pulp circulation tank 4 is connected to the inlet of the pulp circulation pump 6, and the outlet of the pulp circulation pump 6 is connected to the test type The feed ports at the lower part of the cylinder of the vertical stirring mill 3 are connected, and the closed-circuit fine grinding system for the type selection test is also equipped with a power measuring device for measuring the power of the stirring shaft of the experimental vertical stirring mill 3 ....

Embodiment 2

[0045] The grinding object of the industrial vertical stirring mill to be selected in this embodiment is molybdenum ore, and it is required to be finely ground to a target particle size of -325 mesh, and the target particle size mineral content is 75%.

[0046] The specific steps of the selection method are as follows:

[0047] (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 embodiment 1;

[0048] (B) adjusting the ore powder to be ground into a pulp with a concentration of 65%, adding the pulp into the test-type vertical stirring mill 3, and the addition amount is 120% of the cylinder volume of the test-type vertical stirring mill 3;

[0049] The concrete steps of step (B) are:

[0050] 1) Ball distribution: add pre-weighed and prepared medium balls into the 9L test-type vertical stirring mill 3, the filling rate of the medium...

Embodiment 3

[0063] The grinding object of the to-be-selected industrial vertical stirring mill 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%.

[0064] The specific steps of the selection method are as follows:

[0065] (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 embodiment 1;

[0066] (B) adjusting the ore powder to be ground into a slurry with a concentration of 65%, adding the slurry into the test-type vertical agitating mill 3, and the addition is 130% of the volume of the test-type vertical agitating mill 3;

[0067] The concrete steps of step (B) are:

[0068] 1) Matching balls: add pre-weighed and prepared medium balls into the 50L test-type vertical stirring mill 3, and the filling rate of the medium balls is 60% ...

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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 agitating mills with high grinding efficiency, low energy consumption, and small footprint are gradually replacing The ball mill has become the main equipment for the fine grinding of fine minerals. How to determine the power demand and the model specification of the industrial mill through the experimental method is the key to reduce the investment cost and realize energy saving and consumption reduction of the industrial vertical stirring mill. Traditional selection methods (such as the ...

Claims

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Application Information

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Patent Type & Authority Applications(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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