CN105013572A - Sphere adding method for large-scaled semi-autogenous mill with diameter being 10 meters - Google Patents
Sphere adding method for large-scaled semi-autogenous mill with diameter being 10 meters Download PDFInfo
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Abstract
The invention relates to the field of sphere adding of large-scaled semi-autogenous mills, in particular to a sphere adding method for a large-scaled semi-autogenous mill with the diameter being 10 meters. By controlling the power of the mill and the mine returning quantity, the optimum sphere adding effect is achieved. In addition, the proportion of the volume of a sphere to the volume of the mill is checked at any time. When the proportion of the volume of the sphere to the volume of the mill is lower than 9%, the volume of the sphere should be replenished up to 9%. According to the sphere adding method, the granularity qualified rate of mine grinding products and the mine grinding efficiency of the mill are improved, the sphere consumption and the power consumption are lowered, and the final aim that the mine separating cost is lowered is achieved.
Description
Technical field
The present invention relates to large-scale semi-autogenous mill and add ball field, specifically a kind of diameter is that the large-scale semi-autogenous mill of 10 meters adds ball method.
Background technology
Ore hardness is high, complicated component, and iron mineral disseminated grain size is fine, and mill selects difficulty very big; Ore-sorting system Grinding procedure 10 rice diameter semi-autogenous mills used are the maximum semi-autogenous mills of China's specification.Because ore hardness is high, mill diameter large, cause milling medium consumption to remain high, in the face of the severe situation that international ore deposit valency plummets, seek one and reasonably add ball method, reduce ball consumption, improve beneficiating efficiency, reduce beneficiation cost, significant.
Summary of the invention
Technical problem to be solved by this invention is: how to determine rationally to add the ball time, add ball amount, accurate control milling medium pack completeness, prevent the overlapping excessive wear of ball milling ball, stop low material level sky and pound liner plate, reduce liner plate consumption, realize reducing ball consumption, liner plate consumption, power consumption, thus reduce mineral processing production cost.
The technical solution adopted in the present invention is: a kind of diameter is that the large-scale semi-autogenous mill of 10 meters adds ball method,
Step one, if mill power be less than 9500 kilowatts simultaneously quantity of return mines be less than 180 tons/hour and go to step two, if mill power is more than or equal to 9500 kilowatts or quantity of return mines is more than or equal to 180 tons/hour, add ball immediately once, adding ball amount is 4 tons, after four hours, again observe, if mill power is still more than or equal to 9500 kilowatts or quantity of return mines is still more than or equal to 180 tons/hour, add ball more once, adding ball amount is 4 tons, so repeatedly until after four hours, again observe, mill power be less than 9500 kilowatts simultaneously quantity of return mines be less than 180 tons/hour, go to step two,
Step 2, if mill power be less than 8500kw kilowatt simultaneously quantity of return mines be less than 120 tons/hour and go to step three, if mill power is more than or equal to 8500 kilowatts or quantity of return mines is more than or equal to 120 tons/hour, add ball immediately once, adding ball amount is 4 tons, after five hours, again observe, if mill power is more than or equal to 9500 kilowatts or quantity of return mines is more than or equal to 180 tons/hour, return step, if mill power is more than or equal to 8500 kilowatts or quantity of return mines is more than or equal to 120 tons/hour, add ball more once, adding ball amount is 4 tons, so repeatedly until after five hours, mill power be less than 8500kw kilowatt simultaneously quantity of return mines be less than 120 tons/hour and go to step three,
If step 3 mill power be less than 8500kw kilowatt simultaneously quantity of return mines be less than 120 tons/hour, add ball immediately once, adding ball amount is 4 tons, after six hours, goes to step one.
As a kind of preferred embodiment: in step one, step 2, step 3, check the volume of grinding machine shared by sphere volume at any time, if when the volume that the volume of ball accounts for grinding machine is less than 9%, should 9% be added.
The invention has the beneficial effects as follows: add ball method by the present invention, improve ore milling product granularity qualification rate and grinding machine grinding efficiency, reduce ball consumption and power consumption, reach the final purpose reducing beneficiation cost.Pilot production shows: when diameter be the large-scale semi-autogenous mill disposal ability of 10 meters basically identical, the granularity qualification rate adding ball by the present invention reaches 94.95%, ball consumption is 0.61kg/ t raw ore, ore grinding power consumption 8.49kwh/t raw ore, and adopt the existing granularity qualification rate adding ball to be 91.61%, ball consumption is 1.03kg/ t raw ore, ore grinding power consumption is 9.13kwh/t raw ore, ball consumption reduction by 0.42 kg/ t raw ore, reduce 40.78%, power consumption reduces 0.64kwh/t raw ore, and power saving rate is 7.54%.
Detailed description of the invention
1, diameter is the large-scale semi-autogenous mill study mechanism of 10 meters
Diameter is that the large-scale semi-autogenous mill medium of 10 meters has two classes: one is lump ore, and two is supplementary part steel balls.The main body of general ore grinding is lump ore, and the object of adding steel ball is the deficiency of milling medium in supplementary ore, eliminates difficult abrasive particle (i.e. hard rock).
Because ore soft or hard degree there are differences, phase commute ore grinding stone, soft mineral treating capacity is about 2 times of hard ore, is even up to 3 times.Tradition adds ball method for determining pack completeness adds ball at regular time and quantity, and under treating capacity, the two definite value prerequisite of ball pack completeness, easy ore grinding stone holdup time in grinding machine is very short, and discharge from grinding machine faster, in grinding machine, ore pack completeness can reduce; The movement locus of major diameter ore mill milling medium is very long, when ore pack completeness is lower, adds the probability of ball milling ball and empty mill lining plate, the main cause that this is ball consumption, liner plate consumption remains high.
2, by field trial, seek the best and add ball node, realize adding ball as required
How many Semi-Autogenous ball amounts that adds is advisable, and depend on the easy mill degree of ore difficulty mill, ore hardness is a variable, and ball pack completeness also will change thereupon.When ore easily grinds, even if steel ball pack completeness is very low, as long as there are enough impact energys, guaranteeing also should not add ball under treating capacity and granularity qualification rate prerequisite, the impact energy of steel ball being performed to ultimate attainment, making full use of its residue potential
,reach ultimate attainment ball consumption; During ore difficulty mill, Mill power rate rises, and when reaching certain limiting value, adds steel ball by specified quantity, after adding ball, if Mill power rate still falls less than setting, then continues to increase, till being added to normal power always.In addition, when quantity of return mines rises always, reach a certain amount of, after adjustment feed preparation unit size, when quantity of return mines goes up not down, no matter how much power must add ball at once this moment, otherwise easily occurs production accident.Add ball as required according to ore properties, play steel ball impact energy to greatest extent, prevent ball milling ball, excessive wear.So should dynamically add ball and dynamic pack completeness with ore soft or hard degree, should not artificially set.
The present invention adds ball effect by controlling to reach the best to mill power and quantity of return mines, when power be greater than mill power be more than or equal to 9500 kilowatts simultaneously quantity of return mines be more than or equal to 180 tons/hour, need to add ball immediately once, adding ball amount is 4 tons, then again check in the short period (4 hours), if still like this, need to add ball once in 4 hours, adding ball amount is 4 tons, until be greater than mill power be less than 9500 kilowatts simultaneously quantity of return mines be less than 180 tons/hour; When power be greater than mill power be more than or equal to 8500 kilowatts be less than 9500 kilowatts simultaneously quantity of return mines be more than or equal to 120 tons/hour and be less than 180 tons/hour, need to add ball immediately once, adding ball amount is 4 tons, then again check after 5h, if still like this, need to add ball once in 5 hours, adding ball amount is 4 tons, until be greater than mill power be less than 8500 kilowatts simultaneously quantity of return mines be less than 120 tons/hour, now only need within 6 hours, add a ball, adding ball amount is 4 tons.According to ore soft or hard degree, add ball as required, this does not add and must not add, this Jia Bijia, and this adds to add, to meet ore grinding treating capacity and stable quantity of return mines.Ball pack completeness should not establish upper and lower limit, measures the pack completeness value volume lower than grinding machine shared by 9%(sphere volume when shutting down) time, should 9% be added.
Claims (2)
1. diameter is that the large-scale semi-autogenous mill of 10 meters adds a ball method, it is characterized in that:
Step one, if mill power be less than 9500 kilowatts simultaneously quantity of return mines be less than 180 tons/hour and go to step two, if mill power is more than or equal to 9500 kilowatts or quantity of return mines is more than or equal to 180 tons/hour, add ball immediately once, adding ball amount is 4 tons, after four hours, again observe, if mill power is still more than or equal to 9500 kilowatts or quantity of return mines is still more than or equal to 180 tons/hour, add ball more once, adding ball amount is 4 tons, so repeatedly until after four hours, again observe, mill power be less than 9500 kilowatts simultaneously quantity of return mines be less than 180 tons/hour, go to step two,
Step 2, if mill power be less than 8500kw kilowatt simultaneously quantity of return mines be less than 120 tons/hour and go to step three, if mill power is more than or equal to 8500 kilowatts or quantity of return mines is more than or equal to 120 tons/hour, add ball immediately once, adding ball amount is 4 tons, after five hours, again observe, if mill power is more than or equal to 9500 kilowatts or quantity of return mines is more than or equal to 180 tons/hour, return step, if mill power is more than or equal to 8500 kilowatts or quantity of return mines is more than or equal to 120 tons/hour, add ball more once, adding ball amount is 4 tons, so repeatedly until after five hours, mill power be less than 8500kw kilowatt simultaneously quantity of return mines be less than 120 tons/hour and go to step three,
If step 3 mill power be less than 8500kw kilowatt simultaneously quantity of return mines be less than 120 tons/hour, add ball immediately once, adding ball amount is 4 tons, after six hours, goes to step one.
2. a kind of diameter according to claim 1 is that the large-scale semi-autogenous mill of 10 meters adds ball method, it is characterized in that: in step one, step 2, step 3, check the volume of grinding machine shared by sphere volume at any time, if when the volume that the volume of ball accounts for grinding machine is less than 9%, should 9% be added.
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| CN201510350126.6A CN105013572B (en) | 2015-06-24 | 2015-06-24 | A kind of a diameter of 10 meters of large-scale semi-autogenous mill ball feeding method |
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| CN201510350126.6A CN105013572B (en) | 2015-06-24 | 2015-06-24 | A kind of a diameter of 10 meters of large-scale semi-autogenous mill ball feeding method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107626433A (en) * | 2017-08-28 | 2018-01-26 | 铜陵有色金属集团股份有限公司冬瓜山铜矿 | Method by controlling large-scale overflowball mill power to determine to add steel ball amount |
| CN108654763A (en) * | 2017-04-01 | 2018-10-16 | 北京环磨科技有限公司 | A kind of semi-autogenous mill rationally adds method-dynamic ball adding method of steel ball |
| CN108787050A (en) * | 2017-09-14 | 2018-11-13 | 北京环磨科技有限公司 | Semi-Autogenous range optimization ball adding method |
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| US3688992A (en) * | 1970-04-15 | 1972-09-05 | Stauffer Chemical Co | Process and apparatus for the activation of catalysts |
| JPH10113569A (en) * | 1996-10-15 | 1998-05-06 | Mitsubishi Heavy Ind Ltd | Horizontal crushing mill |
| US6016981A (en) * | 1991-04-23 | 2000-01-25 | Kurimoto, Ltd. | Apparatus for producing hydrogen adsorption alloy |
| CN1546237A (en) * | 2003-12-06 | 2004-11-17 | �Ϻ���ͨ��ѧ | Ball grinder accurate ball loading method |
| CN102600958A (en) * | 2012-03-30 | 2012-07-25 | 西安艾贝尔科技发展有限公司 | Dynamical system for loadage of grinding body in cylinder type ball mill and application method of dynamical system |
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- 2015-06-24 CN CN201510350126.6A patent/CN105013572B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3688992A (en) * | 1970-04-15 | 1972-09-05 | Stauffer Chemical Co | Process and apparatus for the activation of catalysts |
| US6016981A (en) * | 1991-04-23 | 2000-01-25 | Kurimoto, Ltd. | Apparatus for producing hydrogen adsorption alloy |
| JPH10113569A (en) * | 1996-10-15 | 1998-05-06 | Mitsubishi Heavy Ind Ltd | Horizontal crushing mill |
| CN1546237A (en) * | 2003-12-06 | 2004-11-17 | �Ϻ���ͨ��ѧ | Ball grinder accurate ball loading method |
| CN102600958A (en) * | 2012-03-30 | 2012-07-25 | 西安艾贝尔科技发展有限公司 | Dynamical system for loadage of grinding body in cylinder type ball mill and application method of dynamical system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108654763A (en) * | 2017-04-01 | 2018-10-16 | 北京环磨科技有限公司 | A kind of semi-autogenous mill rationally adds method-dynamic ball adding method of steel ball |
| CN107626433A (en) * | 2017-08-28 | 2018-01-26 | 铜陵有色金属集团股份有限公司冬瓜山铜矿 | Method by controlling large-scale overflowball mill power to determine to add steel ball amount |
| CN108787050A (en) * | 2017-09-14 | 2018-11-13 | 北京环磨科技有限公司 | Semi-Autogenous range optimization ball adding method |
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Effective date of registration: 20180822 Address after: 033504 Suo Jia Po village, Liang Jia Zhuang Township, Lan county, Shanxi Patentee after: TISCO Lanxian Mining Co. Ltd. Address before: 030003 2 tipped lawn street, pointed lawn area, Taiyuan, Shanxi Patentee before: Taiyuan Iron & Steel (Group) Co., Ltd. |