CN205146435U - Ore grinding secondary grading system - Google Patents
Ore grinding secondary grading system Download PDFInfo
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- CN205146435U CN205146435U CN201520984591.0U CN201520984591U CN205146435U CN 205146435 U CN205146435 U CN 205146435U CN 201520984591 U CN201520984591 U CN 201520984591U CN 205146435 U CN205146435 U CN 205146435U
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- cyclone
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- scalping
- grinding
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Abstract
The utility model discloses an ore grinding secondary grading system belongs to the technical field of ore -dressing technique, goes up on the basis that does not change present ore grinding flow that to carry out the secondary to extension overflow product hierarchical, improvement grinding fineness, including adopt swirler carry on twice hierarchical, the overflow gets into the flotation flowsheet, the sand setting merges with the scalping sand setting and gets into overflowball mill, the ore grinding operation constitutes closed circulation with hierarchical operation, solves that the cost of technological transformation cost is higher, grinding fineness is not enough leads to the undulant and problem not up to standard of flotation index.
Description
Technical field
The utility model relates to the technical field of ore dressing, in particular to a kind of ore grinding secondary grading system.
Background technology
Ore grinding, classification are the important component parts in the middle of modern technique of preparing, for the ready work of downstream process flow process provides qualified grain size product, ore grinding, graded operation are requisite operations in ore-dressing technique, and for improving grinding process efficiency, technological transformation is also a kind of conventional means.
Existing equipment design treatment ability 6000t/D, picks horsestone based on copper mine excavating plant, and process chats average grade presses copper 0.30%, molybdenum 0.016%, cobalt 0.016%, iron 14%.The existing grinding flowsheet of enrichment plant is that two series respectively adopt a MQY3660 overflowball mill to carry out primary grinding operation, every table grinder ore milling product one group two φ 710 cyclones carry out classification, overflow enters flotation flowsheet, sand setting returns ball mill, and grinding operation and graded operation form closed cycle.Existing grinding grading technique belongs to ore dressing circle and uses ripe, a most the most frequently used ore grinding scalping, and ball mill and grader configure one to one.But the existing grinding process flow process in workshop also exists some problems, can not meet need of production, mainly contain following 4 points:
(1) technique of preparing economic indicator is optimized further and is improved; As improved mog, metal recovery rate etc.;
(2) φ 500 cyclone leaves unused, former grinding flowsheet technological transformation, and φ 500 cyclone of replacing after introducing φ 710 cyclone leaves unused, and is underutilized, and for production, is that asset optimization configuration is not enough;
(3) mog is not enough, causes floatation indicators to fluctuate and not up to standard, shows that mineral monomer dissociates deficiency, causes workshop leading indicator fluctuation, as metal recovery rate is on the low side, there is slight metal loss;
(4) mog is improved by existing mature technology, primary grinding technique need be increased, adopt new ore grinding and classifying equipoment, but can problems be caused, cross to pulverize as ore and produce argillization, serious harm is caused to follow-up floatation process, affects metal recovery, thus reduce production and technical indication, after increasing grinding attachment, whole plant process process-oriented layout can have an impact, take a large amount of construction area and installation space, and the improvement cost that can significantly develop skill.
Utility model content
The purpose of this utility model is the object providing a kind of ore grinding secondary grading system to produce configuration to reach optimization, make full use of idle hydrocyclone, improve mog, reduce technological transformation cost, and solution technological transformation cost expenses is higher, mog is not enough causes floatation indicators to fluctuate and problem not up to standard.
For realizing the utility model object, the technical scheme adopted is: a kind of ore grinding secondary grading system, it is characterized in that, comprise ball mill, scalping cyclone, secondary grading cyclone and numerical control variable frequency pump, the output of described ball mill is connected with the input of numerical control variable frequency pump, and numerical control variable frequency delivery side of pump is connected with the input of scalping cyclone; Described scalping cyclone and secondary grading cyclone are equipped with underflow end and effluent head, and the effluent head of scalping cyclone is connected with the input of secondary grading cyclone; The underflow end of described scalping cyclone and secondary grading cyclone is all connected with ore pulp pipe, and ore pulp pipe is connected with the input of mixing sand return pipe, and the output of mixing sand return pipe is connected with the input of spheroidal graphite machine.
Further, described scalping cyclone is φ 710 cyclone, and secondary grading cyclone is φ 500 cyclone.
Further, the central axis of described scalping cyclone and secondary grading cyclone all and horizontal plane.
The utility model tool is adopted to have the following advantages:
1, technique of preparing economic indicator one-step optimization and raising, easy to operate, regulates simple, and by force, equipment is convenient to Maintenance and Repair for flow process and equipment controllability; Be convenient to timely adjustment, prevent flow process short circuit, keep fineness, steady production, reduce subsequent affect;
2, twice classification uses numerical control variable frequency pump to ore deposit, make full use of automatic control technology, be convenient to regulate flow process in time, make cyclone feed force extremely stable, effectively prevent flow process short circuit, keep fineness to greatest extent, graded operation stable operation, reduce follow-up flow process negative effect to greatest extent, at utmost for providing high-quality ore milling product for subsequent production;
3, solve mog deficiency and prevent the too high ore that causes of mog overground, cause floatation indicators to fluctuate and problem not up to standard, mog improves obviously, and accumulative mog improves more than 6 percentage points on year-on-year basis;
4, without the need to improving mog by existing mature technology, new primary grinding technique need not be increased, without the need to adopting new ore grinding and classifying equipoment, problems can be avoided, cross to pulverize as prevented ore and produce argillization, serious harm is caused to follow-up floatation process, affects metal recovery, thus reduce production and technical indication; Not increasing grinding attachment, can not produce whole plant process process-oriented layout. considerable influence, takies construction area and installation space significantly reduces, and can significantly reduce technological transformation cost;
5, the more existing ore-dressing technique of the utility model, all has stronger feasibility technically and economically, and the most important thing is that the feasibility on mineral processing technology is stronger.
Accompanying drawing explanation
Fig. 1 is the process chart of the ore grinding secondary grading system that the utility model provides.
Detailed description of the invention
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
Fig. 1 illustrates the schematic diagram of the ore grinding secondary grading system that the utility model provides, comprise ball mill 1, scalping cyclone 2, secondary grading cyclone 3 and numerical control variable frequency pump 4, it is characterized in that, raw ore enters from the input of ball mill 1, the output of ball mill 1 is connected with the input of numerical control variable frequency pump 4, the output of numerical control variable frequency pump 4 is connected with the input of scalping cyclone 2, by numerical control variable frequency pump 4, pumps into scalping cyclone 2; Described scalping cyclone 2 and secondary grading cyclone 3 are equipped with underflow end and effluent head, most crude particle (or heavy phase) is discharged through cyclone underflow end, and most of fine grained (or light phase) is discharged by effluent head, the effluent head of scalping cyclone 1 is connected with the input of secondary grading cyclone 3, by numerical control variable frequency pump 4, pump into secondary grading cyclone 3; The underflow end of described scalping cyclone 1 and secondary grading cyclone 3 is all connected with ore pulp pipe 6, ore pulp pipe 6 is connected with the input of mixing sand return pipe 5, the output of mixing sand return pipe 5 is connected with the input of spheroidal graphite machine 1, mixes sand return pipe 5 and the frosted of the underflow end of scalping cyclone 1 and secondary grading cyclone 3 is turned back in spheroidal graphite machine 1 and carry out regrind.
Scalping cyclone 2 is φ 710 cyclone, secondary grading cyclone 3 is φ 500 cyclone, after flow process is got through in test run, carry out long-time tracking sampling, the each product design of timely detection, fineness, analyze data, find scalping to ore deposit frequency conversion at about 41Hz, effluent concentration is at 60%-65%, secondary grading is to ore deposit frequency conversion about 40Hz, effluent concentration is about 45% time, grinding process process flow operation is comparatively steady, secondary grading overflow product 200 order fineness can reach about 58%, Ball mill throughput slightly rises, indices is good, substantially re-set target is reached, mineral processing production technical indicator is optimized and is improved obviously, above-mentioned gives ore deposit frequency conversion, adopts VFC to ore deposit motor, by regulating electric machine frequency, regulating to ore deposit belt lace speed, regulating the size of mine-supplying quantity with this, realizes automatically regulating mine-supplying quantity size.
The central axis of scalping cyclone 2 and secondary grading cyclone 3 all and horizontal plane, refer to scalping cyclone 2 and secondary grading cyclone 3 and fixing rear center axis is installed all and horizontal plane, scalping cyclone 2 and secondary grading cyclone 3 are installed on support, support makes scalping cyclone 2 mutually vertical with horizontal plane with the central axis of secondary grading cyclone 3 by regulating, and is at right angle setting; This setting angle is a specific embodiment of the application, and installing cyclone inclination angle is 90 degree, i.e. at right angle setting, to grading, equipment installation, repair and maintenance all advantageously.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. an ore grinding secondary grading system, it is characterized in that, comprise ball mill, scalping cyclone, secondary grading cyclone and numerical control variable frequency pump, the output of described ball mill is connected with the input of numerical control variable frequency pump, and numerical control variable frequency delivery side of pump is connected with the input of scalping cyclone; Described scalping cyclone and secondary grading cyclone are equipped with underflow end and effluent head, and the effluent head of scalping cyclone is connected with the input of secondary grading cyclone; The underflow end of described scalping cyclone and secondary grading cyclone is all connected with ore pulp pipe, and ore pulp pipe is connected with the input of mixing sand return pipe, and the output of mixing sand return pipe is connected with the input of spheroidal graphite machine.
2. ore grinding secondary grading system according to claim 1, is characterized in that, described scalping cyclone is φ 710 cyclone, and secondary grading cyclone is φ 500 cyclone.
3. ore grinding secondary grading system according to claim 1, is characterized in that, the central axis of described scalping cyclone and secondary grading cyclone all and horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520984591.0U CN205146435U (en) | 2015-12-02 | 2015-12-02 | Ore grinding secondary grading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520984591.0U CN205146435U (en) | 2015-12-02 | 2015-12-02 | Ore grinding secondary grading system |
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| Publication Number | Publication Date |
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| CN205146435U true CN205146435U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520984591.0U Expired - Fee Related CN205146435U (en) | 2015-12-02 | 2015-12-02 | Ore grinding secondary grading system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167595A (en) * | 2019-12-30 | 2020-05-19 | 东营方圆有色金属有限公司 | Process method for improving qualified material granularity ratio by secondary classification of cyclone of concentrating mill |
-
2015
- 2015-12-02 CN CN201520984591.0U patent/CN205146435U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167595A (en) * | 2019-12-30 | 2020-05-19 | 东营方圆有色金属有限公司 | Process method for improving qualified material granularity ratio by secondary classification of cyclone of concentrating mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20181202 |