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Undisturbed switch method for ore feeders of ball mill

A technology of undisturbed switching and feeder, which is applied in the direction of grain processing, etc., can solve the problems of ball mill bulge, fluctuation of grinding particle size, output loss, etc., and achieve the effect of avoiding output loss and stabilizing production indicators

Active Publication Date: 2012-11-28
ANSTEEL GRP MINING CO LTD
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AI Technical Summary

Problems solved by technology

This kind of fluctuation is harmful to the ball mill system that requires stable ore feeding, which may cause the loss of output and the fluctuation of the grinding particle size, and may even cause the ball mill to "bulge" in severe cases.

Method used

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Experimental program
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Effect test

Embodiment

[0025] The two groups of multiple mining machines are four in each group, a total of eight mining machines, and the parameters K** are 16 in total, which are: K15, K25, K35, K45, K16, K26, K36 , K46, K17, K27, K37, K47, K18, K28, K38, K48.

[0026] Take the case of 8 mining machines switching to two at the same time as an example. Each time you switch between 1-4# and 5-8# feeding machines, select one of the mining machines that is allowed to run. For example, the current running is 1# and 5# feeder, during the operation of the feeder, the automatic control system stabilizes the ore supply within the allowable fluctuation range of the set ore quantity (within 1 minute, the average value of the ore supply and the set value The deviation is less than 1%), record the ratio of the set value of the ore supply to the output frequency of the frequency converter of the mining machine (the average value within 1 minute) when the two mining machines are running together, and assign this...

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PUM

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Abstract

The invention belongs to the technical field of a switch method for ore feeders of a ball mill, in particular to an undisturbed switch method for ore feeders of a ball mill. On the premise of realizing ball milling basic automatic control function, namely on the premise of ensuring the normal work of systems of ore feeding amount frequency changing speed regulation of a ball mill, automatic switch of the ore feeders, and the like, the undisturbed switch control part content of the ore feeders is added into the control program. When the switch condition of the ore feeders is met, the system calls a selecting program of the ore feeders, judges the starting of two ore feeders and then calls parameters K** of the two ore feeders; the K** is divided by a set value of the current ore feeding amount to obtain the initial frequency of the ore feeders; the frequency is corrected; and the corrected frequency controls the running of the ore feeders by an executing system in t1 time. Therefore, undisturbed switch is realized.

Description

technical field [0001] The invention belongs to the technical field of ball mill feeding machine switching methods, in particular to a ball mill feeding machine switching method without disturbance. Background technique [0002] Most of the ball mills in the mineral processing plant often use multiple feeders to run in turn to achieve uniform feeding of the silo. At present, the automatic control technology of ball mills has been widely used. The feeding machine generally adopts the method of frequency conversion speed regulation to control the amount of ore feeding, and can realize automatic switching between feeding machines. However, in the production process, the degree of wear of the lower ore mouth of each feeding machine is different, which determines that the feeding amount of each feeding machine is not the same under the same number of revolutions, and some differences can reach more than double. Therefore, when the mining machine is switched, the amount of ore fe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C23/02B02C17/18B02C25/00
Inventor 董文俊陈小艳张文竹
Owner ANSTEEL GRP MINING CO LTD
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