CN1079294C - Selectively grading and regrinding process for middlings - Google Patents
Selectively grading and regrinding process for middlings Download PDFInfo
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- CN1079294C CN1079294C CN98113134A CN98113134A CN1079294C CN 1079294 C CN1079294 C CN 1079294C CN 98113134 A CN98113134 A CN 98113134A CN 98113134 A CN98113134 A CN 98113134A CN 1079294 C CN1079294 C CN 1079294C
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- flotation
- frosting
- flotation separation
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Abstract
The present invention relates to a technique for selectively grading and regrinding middlings, which belongs to the technical field of a separation flotation technique. The technique is composed of frosting and flotation separation; a frosting and flotation separation flow system only has a section of grinding mill; the frosting and flotation separation process is divided into two standalone subsystems coarse scavenging work and concentration work; replenishing water of a middling grinding mill returns to form a frosting and flotation separation major cycle to continuously carry out ore grinding, grading and flotation separation to all useful minerals step by step. The technological process has the advantages of simplicity, convenience, easy operation and regulation and small process reforming workload; the present invention can fully use the existing facilities of the original technological process and provide a practicable technical route for further increasing the economic benefit of mines.
Description
The present invention relates to a kind of chats grading and regrinding process, belong to ore dressing floatation process technical field.
The flotation process in existing ore dressing plant mainly contains one section flotation flowsheet, bis flotation flow process or multistage flotation flowsheet.In the flotation, the Treatment of Middling scheme has four kinds basically: (1) returns the suitable place in the floatation process: (2) chats is regrinded: the independent flotation of (3) chats: (4) chats is handled with additive methods such as hydrometallurgys.Wherein, chats is regrinded and highlighted the concentrated and classification of regrinding before is necessary, all is independent regrinding and reconcentration basically, and mill is floating fights separately.The grind grading overflow emphasizes how many-200 order fine particle contents reach, and its essence is exactly once to be ground to, and certainly will cause the overground of some coarse grain valuable minerals, when wherein-300 order content is too much, can cause the overground of some particulate valuable minerals again.In the reality industrial production, because the ore change of properties, valuable mineral disseminated grain size thickness all changes to some extent, is not that an ore grinding just can reach the desirable grinding efficiency that best mineral separate.And the existing disposable floating operation of mill that sorts formation, the recovery that also is unfavorable for not grinding intergrowth, so that cause the rate of recovery of valuable mineral not high.
The object of the present invention is to provide a kind of chats selectively grading and regrinding process, to avoid above-mentioned weak point of the prior art.
For achieving the above object, the present invention makes full use of existing technological process facility, chats adopts a kind of chats selectively grading and regrinding process, it is made of ore grinding, flotation, it is characterized in that: raw ore is divided into coarse scan operation and two independent subsystem of selected operation through ore grinding, classification, after roughly selecting, the chats that obtains turns back in the grind grading flow process selectively, and making influences each other between the subsystem significantly reduces; Chats does not need to concentrate operation, just directly makes the grinding machine ore discharge and adds water and return; By the control of floating agent system, can realize roughly selecting mixing and float, selected diffeential floatation once directly obtains final concentrate; Be no more than under the prerequisite of maximum floatable size, constituting a systemic circulation between ore grinding, the flotation, constantly by easy stages valuable mineral is being carried out ore grinding, classification, flotation, till reaching the required liberation degree of minerals of concentrate grade.
Fig. 1 is one of chats selectively grading and regrinding process schematic flow sheet.
The invention will be further described below in conjunction with accompanying drawing, embodiment.
Embodiment 1: factory is selected in copper mine Sizhou, Dexing, former two sections copper sulphur content are from flotation operation, former flow process internal structure is that thick two essences two are swept, former bis flotation feed ore concentration is 18～20%, and fineness-200 order content is about 90%, and wherein-400 order content is up to about 80%, the operation concentration of roughly selecting of flotation is about 12%, two sections operation copper concentrate grades are greater than 24.2%, the rate of recovery 97.5%, and the mine tailing copper grade is greater than 0.2%.Now adopt chats selective regrinding new technological flow (as shown in Figure 3), with a table grinder grind grading, and former floatation system is coarse scan operation, two subsystems of selected operation.A selected mine tailing directly returns the ball mill mine-discharging terminal, and makes the ball mill ore discharge and add water and return, and constitutes a mill, floating Queensland systemic circulation.After being adjusted into the best come-up condition of copper mineral (mixing floating) on the technology, do not add medicaments such as lime, coarse grain copper mineral and intergrowth thereof fully float roughly selecting operation, single-minded, smart two operation subject matter insured positions, coarse grain is regrinded after being returned classification by the copper mineral lean intergrowth under pressing down, and promptly roughly selects the operation selectivity and floats by all means rate of recovery true tailings copper grade by reducing to 0.134% greater than 0.2%.Selected operation selectivity suppresses, and makes a selected mine tailing selectively grading and regrinding, guarantee grade (
Cu〉=24.2%) each Xingqi duty.The new technology bis flotation gives the ore deposit under the suitable condition of operation concentration-200 order fineness, only is about 67% to-400 order content in the ore deposit, has reduced overground sight significantly and has resembled, and adds water owing to deducted former ball mill, roughly selects operation concentration and brings up to about 19%.Show that through production practices the copper concentrate grade improves 0.24%, two section copper recovery and improves 0.52%, saves new water 0.136T/T raw ore, selects factory to handle 30,000 tons day by the Sizhou, 833.5154 ten thousand yuan of the annual new returns of adopting new technology.
The present invention compared with prior art has following advantage:
1, take full advantage of the existing facility of former technological process, the workflow reengineering workload is little, and New technology is to ore change of properties strong adaptability, and easy operating is regulated;
2, the intergrowth that is rich in the chats that the intergrowth optimum returns is regrinded, fully monomer dissociation:
3, chats is added water as grinding machine and is returned, and reduces or the former water of adding of cancellation grinding machine ore discharge, and the operation mineral slurry flux of roughly selecting with the section flotation is reduced, increased the flotation time of valuable mineral, improve the floatation concentration of this operation simultaneously, reduced dosing, saved water.
4, new technology has been improved classification, and the effect of regrinding has reduced the overground phenomenon of particulate significantly, has improved the rate of recovery high.
This technology is applicable to the flotation of metalliferous mineral and nonmetallic ore.
Claims (1)
1, a kind of chats selectively grading and regrinding process, it is made of ore grinding, flotation, it is characterized in that: raw ore is divided into coarse scan operation and two independent subsystem of selected operation after ore grinding, classification, primary election, the chats that obtains turns back in the grind grading flow process selectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113134A CN1079294C (en) | 1998-02-23 | 1998-02-23 | Selectively grading and regrinding process for middlings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113134A CN1079294C (en) | 1998-02-23 | 1998-02-23 | Selectively grading and regrinding process for middlings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1194887A CN1194887A (en) | 1998-10-07 |
| CN1079294C true CN1079294C (en) | 2002-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98113134A Expired - Fee Related CN1079294C (en) | 1998-02-23 | 1998-02-23 | Selectively grading and regrinding process for middlings |
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| Country | Link |
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| CN (1) | CN1079294C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537387B (en) * | 2009-04-21 | 2012-05-30 | 广州有色金属研究院 | Beneficiation method of copper-sulphur aeonite |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081378B (en) * | 2007-05-23 | 2012-04-18 | 华锡集团车河选矿厂 | Novel technics of rough-flotation high concentration high-efficient flotation |
| CN101468330B (en) * | 2007-12-24 | 2012-06-06 | 鞍钢集团矿业公司 | Technique for processing mixed type iron ore |
| CN106000625A (en) * | 2016-08-12 | 2016-10-12 | 楚雄滇中有色金属有限责任公司 | Method for regrinding copper slag flotation middling |
| CN110732403A (en) * | 2018-07-19 | 2020-01-31 | 中国瑞林工程技术有限公司 | Beneficiation method for copper smelting furnace slag |
| CN109482333B (en) * | 2018-11-22 | 2020-02-14 | 中国矿业大学 | Dry-wet combined enrichment process for copper ore |
| CN110711645A (en) * | 2019-11-08 | 2020-01-21 | 长春黄金研究院有限公司 | Beneficiation method for gold-bearing sulfide ore |
| CN113304888B (en) * | 2021-05-26 | 2023-03-31 | 广西中金岭南矿业有限责任公司 | Speed-division flotation process for sphalerite |
| CN113351357A (en) * | 2021-05-27 | 2021-09-07 | 浙江紫晶矿业有限公司 | Recovery process of fluorite secondary fine powder |
| CN115155794B (en) * | 2022-06-17 | 2024-01-12 | 白银有色集团股份有限公司 | Flotation process for recycling and producing sulfur concentrate from flotation tailings |
| CN115921095B (en) * | 2023-01-03 | 2024-06-07 | 湖南新龙矿业有限责任公司 | Enrichment method of gold in gold-antimony bulk concentrate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107769A (en) * | 1986-11-13 | 1988-05-25 | 范昌海 | Valuable mineral selective milling and stage grading process |
| CN1080568A (en) * | 1992-06-30 | 1994-01-12 | 北京矿冶研究总院 | Flotation method for reducing content of iron and titanium impurities in bauxite |
-
1998
- 1998-02-23 CN CN98113134A patent/CN1079294C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107769A (en) * | 1986-11-13 | 1988-05-25 | 范昌海 | Valuable mineral selective milling and stage grading process |
| CN1080568A (en) * | 1992-06-30 | 1994-01-12 | 北京矿冶研究总院 | Flotation method for reducing content of iron and titanium impurities in bauxite |
Non-Patent Citations (1)
| Title |
|---|
| 金属矿山 1997.7.1 叶涛，萤石矿浮选厂利用选择性磨矿的探讨 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537387B (en) * | 2009-04-21 | 2012-05-30 | 广州有色金属研究院 | Beneficiation method of copper-sulphur aeonite |
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| Publication number | Publication date |
|---|---|
| CN1194887A (en) | 1998-10-07 |
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