CN108525842B - Beneficiation process for floatability treatment of slag middlings - Google Patents
Beneficiation process for floatability treatment of slag middlings Download PDFInfo
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- CN108525842B CN108525842B CN201810265692.0A CN201810265692A CN108525842B CN 108525842 B CN108525842 B CN 108525842B CN 201810265692 A CN201810265692 A CN 201810265692A CN 108525842 B CN108525842 B CN 108525842B
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- middling
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title claims abstract description 24
- 239000002893 slag Substances 0.000 title claims abstract description 23
- 239000012141 concentrate Substances 0.000 claims abstract description 19
- 238000000227 grinding Methods 0.000 claims abstract description 15
- 238000005188 flotation Methods 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000000498 ball milling Methods 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000010949 copper Substances 0.000 abstract description 5
- 230000002000 scavenging effect Effects 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 3
- 229910001779 copper mineral Inorganic materials 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a beneficiation process for floatability treatment of slag middlings, which comprises the following process flows of: the method comprises the following steps of sequentially carrying out ball mill grinding treatment and grading by a grading machine on furnace slag, returning settled sand obtained after grading to a ball mill, carrying out rough concentration on overflow ore pulp obtained after grading to obtain rough concentrate and middling I, carrying out scavenging on the middling I to obtain middling II and tailings, conveying the middling II to a middling feeding device, controlling the concentration of the underflow of the middling II by the middling feeding device to 72% -75%, carrying out ball mill grinding, feeding the ore pulp obtained after ball mill grinding and the ore pulp overflowing by the middling feeding device into a pump pool, pumping the ore pulp in the pump pool to a hydrocyclone for grading, carrying out flotation system recleaning on the ore pulp graded by the hydrocyclone to obtain concentrate I and tailings, and carrying out ball mill grinding on the settled sand graded by the hydrocyclone. The invention adds a middling feeding device for grinding and then separating, thereby effectively improving the recovery rate of copper metal.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of flotation of slag middlings, in particular to a beneficiation process for floatability treatment of the slag middlings.
[ background of the invention ]
In the flotation process, the selected tailings or scavenged froth products are generally called middlings, and the middlings generally have a lower grade than the concentrate and a higher grade than the raw ore, and have a floatability lower than the concentrate and higher than the tailings. For the treatment of middlings, the condition of consortia in middlings is firstly analyzed, the floatability of middlings and the requirement on the quality of concentrate are researched, and then the treatment method of middlings can be determined. Whether the middling treatment method is proper or not directly influences the recovery rate of available resources in the slag, and has a great relation to the improvement of beneficiation indexes. The existing slag middling beneficiation process is as follows: grading the slag middlings by a hydrocyclone, feeding the graded and overflowed ore pulp into a flotation system, and feeding settled sand into a ball mill for regrinding. The process method for treating the middlings in the slag has the defects that the metal copper is difficult to efficiently recover, the recovery rate of available resources in the slag is low, and ideal technical indexes are difficult to achieve. Through analysis, the main influence factors are as follows: firstly, the ore pulp subjected to graded overflow is provided with a flotation reagent, and the monomer dissociation degree of copper minerals is insufficient, so that the floatability of middlings is poor, and the flotation effect is not ideal; secondly, because the concentration of the middlings is about 30%, the middlings cannot directly enter the ball mill for grinding, so that the recovery efficiency of the slag middlings is low, and the energy consumption is high.
[ summary of the invention ]
In view of the above, in order to overcome the defects of the prior art, the invention provides a beneficiation process for floatability treatment of slag middlings, which changes the existing regrinding and recleaning process flow into a process flow of grinding and recleaning, so that the recovery rate of copper in the slag middlings is effectively improved, the comprehensive tailing grade is reduced, and the economic benefit is improved.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a mineral processing technology for floatability treatment of slag middlings comprises the following process flows: the method comprises the following steps of sequentially carrying out ball mill grinding treatment and grading by a grading machine on furnace slag, returning settled sand obtained after grading to the ball mill, carrying out rough concentration on overflow ore pulp obtained after grading to obtain rough concentrate and middling I, carrying out scavenging on the middling I to obtain middling II and tailings, carrying out fine concentration on the rough concentrate to obtain concentrate I and concentrate II, conveying the middling II to a middling feeding device, controlling the concentration of the underflow of the middling II by the middling feeding device to 72% -75%, carrying out ball milling, enabling the ore pulp obtained by the ball milling and the overflow of the middling feeding device to enter a pump pool together, pumping the ore pulp in the pump pool to a hydrocyclone for grading, carrying out flotation system recleaning on the ore pulp obtained by the hydrocyclone grading to obtain concentrate I and tailings, and carrying out ball milling on the settled sand graded by the hydrocyclone.
Middling feeder includes a feeding section of thick bamboo, ore discharge adjusting valve, ore discharge valve hand wheel, ore discharge adjusting valve support, underflow groove body, back flush water mechanism and ore discharge mouth, a feeding section of thick bamboo set up in one side of ore discharge adjusting valve support upper end, the ore discharge adjusting valve set up in the middle part of ore discharge adjusting valve support upper end, ore discharge valve hand wheel set up in the top of ore discharge adjusting valve support, the underflow groove body set up in the lower extreme of ore discharge adjusting valve support, back flush water mechanism is located the lower extreme of underflow groove body, the ore discharge mouth is located the bottom of ore discharge adjusting valve support, just the lower extreme of ore discharge adjusting valve offset in the upper end of ore discharge mouth. The middling feeding device is used for depositing the middling II and effectively controlling the concentration of the middling II underflow, so that ball milling and grinding are facilitated.
Furthermore, the back flush mechanism includes the water inlet pipe mouth and rotatory water wheels of arranging, the water inlet pipe mouth intercommunication rotatory water wheels of arranging, through the regulation of water inlet pipe mouth aperture realizes the control of inflow, thereby realizes the regulation of middling II underflow concentration.
The middling feeding device is added in the original process flow, the middling feeding device effectively adjusts and controls the concentration of the underflow of the middling II, grinding and dressing are realized, the middling II is ground, stripped, scrubbed and stripped, and floatability of copper minerals is improved, so that the recovery rate of copper in the slag middling is effectively improved, the comprehensive tailing grade is reduced, and economic benefits are improved.
[ description of the drawings ]
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention;
fig. 2 is a schematic structural view of a middling feeding device of the present invention.
In the figure, 01, a middling feeding device, 1, a feeding cylinder, 2, an ore discharge adjusting valve, 3, an ore discharge valve hand wheel, 4, an ore discharge adjusting valve support, 5, an underflow groove body, 6, a back flushing water mechanism, 61, a water inlet pipe opening, 62, a rotary water discharge wheel, 7 and an ore discharge opening.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, a beneficiation process for floatability treatment of slag middlings comprises the following process flows: (1) carrying out ball mill grinding treatment and twice grading by a grading machine on the furnace slag in sequence, returning settled sand obtained after grading to the ball mill, and carrying out a roughing process I on the overflow ore pulp after grading to obtain rough concentrate and middling I; (2) performing scavenging on the middling I to obtain middling II and tailings, performing concentration on the rough concentrate I to obtain concentrate I and concentrate II, wherein the concentrate I is a qualified product, and returning the concentrate II to the rough concentration process I; (3) the middling II is conveyed to a middling feeding device 01, the underflow of the middling II reaches 72-75% after the concentration of the middling II is controlled by the middling feeding device 01, and then ball milling is carried out; (4) the ore pulp of the ball milling and grinding and the ore pulp overflowing through the middling feeding device 01 enter a pump pool together, and the ore pulp in the pump pool is pumped to a hydrocyclone for classification; (5) and performing ball milling on the settled sand classified by the hydrocyclone, and performing a roughing process II, a fine selection process II and a scavenging process II on the ore pulp classified and overflowed by the hydrocyclone to obtain concentrate I and tailings.
The back flushing mechanism 6 comprises a water inlet pipe 61 and a rotary water discharge wheel 62, wherein the water inlet pipe 61 is communicated with the rotary water discharge wheel 62, and the control of water inflow is realized through the adjustment of the opening degree of the water inlet pipe 61, so that the adjustment of the underflow concentration of the middling II is realized.
Taking Australian slag of smelting plants of the company of China as an example, after the flotation process flow is improved, the middling II ore pulp firstly enters a storage tank in a centralized mode and then is conveyed into a feeding cylinder 1, the middling II ore pulp is deposited in an ore discharge adjusting valve bracket 4 and enters an underflow groove body 5, a back flushing mechanism 6 adjusts the underflow concentration of the middling II ore pulp through adjustment of water inflow, the concentration of the middling II ore pulp is controlled to be 72% -75%, and then ball milling is carried out; and on the other hand, the ore pulp of the middling II overflows at the upper end of the ore discharge adjusting valve bracket 4, the overflowing ore pulp and the ball-milling ore discharge enter a pump pool and are pumped to a hydrocyclone for classification, the classified overflowing ore pulp enters a flotation system for recleaning to obtain concentrate I and tailings, and the classified settled sand returns to the ball mill for regrinding.
Through the production practice, the grade of the tailings can be effectively reduced by 0.01 percent.
According to the invention, the floatability of copper minerals is improved by additionally arranging the middling feeding device, so that the recovery rate of copper in the slag middling is effectively improved, the comprehensive tailing grade is reduced, and the economic benefit is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. A mineral processing technology for floatability treatment of slag middlings comprises the following process flows: the method is characterized in that the middling II is conveyed to a middling feeding device, the underflow of the middling II reaches 72% -75% after being controlled by the concentration of the middling feeding device, and then ball milling and grinding are carried out; the ore pulp of the ball milling and grinding and the ore pulp overflowing through the middling feeding device enter a pump pool together, and the ore pulp in the pump pool is pumped to a hydrocyclone for classification; carrying out flotation system recleaning on the ore pulp which is graded and overflowed by the hydrocyclone to obtain concentrate I and tailings, and carrying out ball milling on settled sand which is graded by the hydrocyclone;
middling feeder includes a feeding section of thick bamboo, ore discharge adjusting valve, ore discharge valve hand wheel, ore discharge adjusting valve support, underflow groove body, back flush water mechanism and ore discharge mouth, a feeding section of thick bamboo set up in one side of ore discharge adjusting valve support upper end, the ore discharge adjusting valve set up in the middle part of ore discharge adjusting valve support upper end, ore discharge valve hand wheel set up in the top of ore discharge adjusting valve support, the underflow groove body set up in the lower extreme of ore discharge adjusting valve support, back flush water mechanism is located the lower extreme of underflow groove body, the ore discharge mouth is located the bottom of ore discharge adjusting valve support, just the lower extreme of ore discharge adjusting valve offset in the upper end of ore discharge mouth.
2. The beneficiation process for floatability treatment of slag middlings according to claim 1, wherein the backwash water mechanism comprises a water inlet pipe and a rotary water discharge wheel, and the water inlet pipe is communicated with the rotary water discharge wheel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810265692.0A CN108525842B (en) | 2018-03-28 | 2018-03-28 | Beneficiation process for floatability treatment of slag middlings |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810265692.0A CN108525842B (en) | 2018-03-28 | 2018-03-28 | Beneficiation process for floatability treatment of slag middlings |
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| CN108525842A CN108525842A (en) | 2018-09-14 |
| CN108525842B true CN108525842B (en) | 2020-08-25 |
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| 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 |
| CN113441286B (en) * | 2021-06-17 | 2022-07-29 | 南京银茂铅锌矿业有限公司 | Process method beneficial to improving recovery rate of lead and silver in lead concentrate |
| CN115318809B (en) * | 2022-08-24 | 2024-04-26 | 中南大学 | Collaborative grinding and flotation de-ashing quality improving method for coal gasification fine slag-oil-based drilling cuttings |
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| CN102284369B (en) * | 2011-06-09 | 2014-01-22 | 北京矿冶研究总院 | Method for improving flotation recovery rate |
| CN102513204A (en) * | 2011-12-21 | 2012-06-27 | 大冶有色设计研究院有限公司 | Beneficiation method of sieving and flotation combination process for recycled copper of copper smelting converter slag |
| RU120648U1 (en) * | 2012-05-12 | 2012-09-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | TECHNOLOGICAL COMPLEX FOR COAL PROCESSING |
| CN102974453A (en) * | 2012-11-28 | 2013-03-20 | 浙江和鼎铜业有限公司 | Technology for processing copper melting converting furnace slag |
| CN104525360B (en) * | 2014-12-24 | 2017-04-05 | 中冶长天国际工程有限责任公司 | The method and apparatus of pulp density control during a kind of grind grading |
| CN104646172A (en) * | 2015-01-13 | 2015-05-27 | 黄石大江集团有限公司 | Method for floating copper from electric furnace slag |
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Address after: 435000 No.5 Daguang connecting line, Xialu District, Huangshi City, Hubei Province Patentee after: China National Chemical Dajiang Environmental Protection Technology Co.,Ltd. Address before: 435000 No.5 Daguang connecting line, Xialu District, Huangshi City, Hubei Province Patentee before: HUBEI DAJIANG ENVIRONMENTAL TECHNOLOGY CO.,LTD. |
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