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The method of determining the amount of additional steel balls by controlling the power of a large overflow ball mill

A power determination, ball mill technology, applied in grain processing and other directions, can solve problems such as misjudgment

Active Publication Date: 2019-12-17
DONGGUASHAN COPPER MINE TONGLING NONFERROUS METALS GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing method for adding steel balls to a ball mill is susceptible to misjudgment due to the interference of other factors. Therefore, a method for determining the amount of added steel balls by controlling the power of a large overflow ball mill is provided

Method used

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  • The method of determining the amount of additional steel balls by controlling the power of a large overflow ball mill

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Experimental program
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Effect test

Embodiment 1

[0013] Embodiment 1: the method for determining the amount of additional steel balls by controlling the power of a large-scale overflow type ball mill is characterized in that it comprises the following steps: (1), determining the optimal filling rate of the large-scale overflow type ball mill; (2), in When the ball mill is working normally, record the best operating power W of the ball mill under the best filling rate 1 ; (3), when working normally within the rated power of the ball mill, add a certain quality of steel ball δ to the ball mill 1 , record the running power W of the ball mill at this time 2 ; (4), according to the formula W a =(W 2 -W 1 ) / δ 1 Calculate the change value of the operating power of the ball mill per ton of steel balls added on average, where W a It is the added value of the operating power of the unit steel ball mill, the unit is kW / t, to ensure that W a The accuracy of the three repeated measurements, calculations, to obtain the average value...

Embodiment 2

[0014] Embodiment 2: The difference with Embodiment 1 is that in step (4) to ensure that W a The accuracy of the measurement and calculation were repeated 4 times, and the average value was obtained

[0015] The specific operation of step (1) of the present invention can refer to the Chinese invention patent application number CN201310677487.2. The patent name is a method for determining the filling rate of a mill. The fineness of the grinding product changes, and the required grinding fineness is restored during the period of increasing the filling rate. The downhill method of reducing the filling rate is used to find the best filling rate through on-site exploration and production tests; the grinding fineness of the mill is used as the control The goal is to comprehensively determine the best filling rate based on fineness and sorting indicators.

[0016] The ultimate purpose of adding steel balls in the present invention is to ensure a constant filling rate of steel ball...

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Abstract

The invention discloses a method for determining the added steel ball quantity by controlling the power of a large-scale overflow ball mill. The method comprises the steps of acquiring the operating power of the mill at the optimal filling ratio through targeted experimental research as a reference value of the operating power during normal production; deducing changes of the filling ratio of theball mill by monitoring changes of the operating power of the ball mill in real time to realize accurate tracking on the ball added quantity and guarantee stable operation of the ball mill under the optimal operating power. By means of the method, good operation of the ball mill at the optical filling ratio is guaranteed with a specific change value of the operating power as the calculation basisof the ball added quantity, and the reasonability, scientificity and advanced performance of the ball mill ball adding method are achieved.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a method for determining the amount of additional steel balls by controlling the power of a large overflow ball mill. Background technique [0002] As a traditional grinding equipment, the grinding machine is widely used in metallurgy, chemical industry, cement, ceramics, construction, thermal power and national defense industries. Especially in the beneficiation department in the metallurgical industry, the grinding operation has a very important position. Ball mills are divided into grid type ball mills and overflow type ball mills according to different ore discharge methods, which are the most common ore grinding machines used in mineral processing plants at present. The overflow ball mill is mainly composed of cylinder body, end cover, main bearing, hollow journal, transmission gear and mine feeder. The ore discharge of the mill is due to the fact that the diamet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C25/00B02C17/10
Inventor 邓禾淼姚道春康怀斌
Owner DONGGUASHAN COPPER MINE TONGLING NONFERROUS METALS GRP CO LTD