CN1133503C - Dressing process for gold ore - Google Patents
Dressing process for gold ore Download PDFInfo
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- CN1133503C CN1133503C CNB001239848A CN00123984A CN1133503C CN 1133503 C CN1133503 C CN 1133503C CN B001239848 A CNB001239848 A CN B001239848A CN 00123984 A CN00123984 A CN 00123984A CN 1133503 C CN1133503 C CN 1133503C
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Abstract
The present invention discloses a gold mineral processing technology. In the technology, after closed-circuit crushing is carried out at two stages and a half, and double closed circuit grinding is carried out at two stages, differential flotation and concentration are carried out; after separation job of a coarse and a scanning is carried out to the tailings of the present invention, cleaner tailings and scavenger concentrate are concentrated together, raw ores are merged, and are ground and separated. Therefore, the technology has high crushing efficiency, most of fine fraction content of crushed final products is 81.55%; the technology has high crushing processing capacity, and the processing capacity is 53.84 tons per hour; the technology has the advantages of short operation time, good separation effect, high technical index, capability of synchronously improving ore dressing recovery percentage and concentrate grade, and high recovery rate index; the recovery rate is increased by 3.03%, the concentrate grade is increased by 16.57 g/t, the power consumption is reduced by 21.5%, the cost is reduced by 18.9%, and the annual economic benefit is increased by 8601.2 thousand yuan.
Description
(1) technical field: the present invention relates to a kind of ore-dressing technique, relate in particular to a kind of dressing process for gold ore.
(2) background technology: present dressing process for gold ore is two section one a closed circuit crushing technology, one section one closed circuit grinding technology, flotation is an one roughing, triple cleaning, the technological process that secondary is scanned and the flotation chats returns for order, be traditional common process flow process that gold ore adopts, this kind technology crushing efficiency is low, and broken final products fine fraction content only is 66.36% less, and the break process ability is low, per hour disposal ability is 38.97 tons, working time is long, directly have influence on the raising of the floating disposal ability of mill, and sorting result is bad, technical indicator is low, recovery rate in ore-dressing and concentrate grade are improved synchronously, and rate of recovery index is low, the power consumption height, cost height, economic benefit are not remarkable.
(3) summary of the invention: the objective of the invention is to overcome the deficiency of above-mentioned prior art and a kind of crushing efficiency height is provided, improve technique of preparing content and ore dressing main economic and technical indices, little power consumption, the dressing process for gold ore that cost is low.
Purpose of the present invention can reach by following measure: a kind of dressing process for gold ore, its step is as follows: a) raw ore carries out entering the double-deck screen shale shaker screening after first section fragmentation, the upper strata product is by together carrying out second section fragmentation with the middle level product after the fragmentation again, and second section crushed product returns first section crushed product of merging and sieve again.B) final products after the screening carry out ore grinding and constitute closed circuit grinding with classification mechanism by first section ball mill, and its classification overflow enters second section ball mill and regrinds behind cyclone classification, constitute closed circuit grinding with cyclone then.C) diffeential floatation is at first carried out in the cyclone overflow, its froth pulp carries out recleaning, triple cleaning and finally becomes the concentrate product, mine tailing after diffeential floatation is through the flow process that sorts of one roughing, primary cleaning, recleaning, triple cleaning, once purging selection, the mine tailing of primary cleaning and the froth pulp of once purging selection enter cyclone in the lump to carry out classification again, sorts, recleaning and primary cleaning constitute closed circuit sorting, and triple cleaning and recleaning constitute closed circuit sorting.
The present invention can produce following good effect compared with the prior art: because the present invention adopts two and half one closed circuit crushings, two section two closed circuit grinding is then again through diffeential floatation, selected, its mine tailing through one slightly sweep sorting operation after, cleaner tailings and scavenger concentrate are concentrated in together merging raw ore regrinding and reconcentration, so this kind technology crushing efficiency height, broken final products fine fraction content mostly is 81.55%, break process ability height, per hour disposal ability is 53.84 tons, the working time is short, and sorting result is good, the technical indicator height can make recovery rate in ore-dressing and concentrate grade improve synchronously, rate of recovery index height, improved 3.03%, concentrate grade has improved 16.57g/t, and power consumption has reduced by 21.5%, and cost has reduced by 18.9%, year, economic benefit increased by 860.12 ten thousand yuan, and this invention contrasts as following table with the technical indicator of prior art:
| Project | Existing technical indicator | Existing technical indicator |
| Head grade | 3.85g/t | 3.87g/t |
| Concentrate grade | 43.81g/t | 60.38g/t |
| Tailings grade | 0.26g/t | 0.13g/t |
| The rate of recovery | 93.71％ | 96.7％ |
| Power consumption | 31.73 kilowatt hour/ton | 24.91 kilowatt hour/ton |
| Beneficiation cost | 33.34 unit/ton | 27.04 unit/ton |
| The break process ability | 38.97 ton/hour | 53.84 ton/hour |
| Broken final products dynamics-8mm | 66.36％ | 81.55％ |
(4) description of drawings:
Fig. 1 is the process chart of prior art;
Fig. 2 is a process chart of the present invention.
(5) specific embodiment: optimum implementation of the present invention is elaborated below in conjunction with accompanying drawing:
Embodiment: a kind of dressing process for gold ore, its flow process is as follows: raw ore enters crude ore bin by the glazing bar sieve of 250*250mm, the glazing bar sieve is provided with the pneumatic pick of broken bulk, after smashing with pneumatic pick greater than the bulk of 250mm, give people's jaw crusher by electric vibrating feeder, carry out first section fragmentation, particle size after cracking is less than 60mm, its product is delivered to the double-deck circular vibrating screen screening that sieve aperture is 10mm through adhesive tape conveyor, the upper strata product gives heavy powerful physical pendulum disintegrating machine through electric vibrating feeder, by broken back and middle level product together carry out second section fragmentation for people's gyratory crusher through adhesive tape conveyor again, particle size after cracking 10mm, second section crushed product returns first section crushed product of merging and sieves again, constitutes two and half one closed circuit crushing technological processes.Final products after the screening enter first section grid ball mill through belt conveyer and carry out ore grinding after the nuclear weigh instrument weighing, and constitute closed circuit grinding with classification mechanism, its classification overflow enters second section ball mill and regrinds behind cyclone classification, constitute closed circuit grinding with cyclone then.The cyclone overflow is at first carried out diffeential floatation by flotation device, mine tailing after diffeential floatation is through one roughing, primary cleaning, recleaning, triple cleaning, the process that sorts of once purging selection, the froth pulp of one roughing carries out primary cleaning, the product from failing of one roughing carries out once purging selection, the froth pulp of primary cleaning carries out recleaning, the mine tailing of primary cleaning and the froth pulp of once purging selection enter cyclone in the lump and carry out classification again, entering the secondary grinding operation after classified regrinds, merging raw ore selects again, the froth pulp of recleaning carries out triple cleaning, the mine tailing of recleaning returns primary cleaning and primary cleaning constitutes closed circuit sorting, the concentrate of triple cleaning is final products, and the mine tailing of triple cleaning returns recleaning and recleaning constitutes closed circuit sorting.After carrying out recleaning, triple cleaning, the froth pulp of diffeential floatation finally becomes the concentrate product.
Claims (1)
1, a kind of dressing process for gold ore, its flow process is as follows:
A) raw ore carries out entering the double-deck screen shale shaker screening after first section fragmentation, and the upper strata product is by together carrying out second section fragmentation with the middle level product after the fragmentation again, and second section crushed product returns first section crushed product of merging and sieve again;
B) final products after the screening carry out ore grinding and constitute closed circuit grinding with classification mechanism by first section ball mill, and its classification overflow enters second section ball mill and regrinds behind cyclone classification, constitute closed circuit grinding with cyclone then;
C) diffeential floatation is at first carried out in the cyclone overflow, its froth pulp carries out recleaning, triple cleaning and finally becomes the concentrate product, mine tailing after diffeential floatation is through the flow process that sorts of one roughing, primary cleaning, recleaning, triple cleaning, once purging selection, the mine tailing of primary cleaning and the froth pulp of once purging selection enter cyclone in the lump to carry out classification again, sorts, recleaning and primary cleaning constitute closed circuit sorting, and triple cleaning and recleaning constitute closed circuit sorting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001239848A CN1133503C (en) | 2000-10-29 | 2000-10-29 | Dressing process for gold ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001239848A CN1133503C (en) | 2000-10-29 | 2000-10-29 | Dressing process for gold ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1302697A CN1302697A (en) | 2001-07-11 |
| CN1133503C true CN1133503C (en) | 2004-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001239848A Expired - Fee Related CN1133503C (en) | 2000-10-29 | 2000-10-29 | Dressing process for gold ore |
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| Country | Link |
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| CN (1) | CN1133503C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012006937A1 (en) * | 2010-07-15 | 2012-01-19 | 广西有色金属集团汇元锰业有限公司 | Method for grinding manganese dioxide ore |
| CN101927236B (en) * | 2009-06-24 | 2012-05-23 | 鞍钢集团矿业公司 | Lean hematite dressing fine sieve-table gravity separation process |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1911523B (en) * | 2005-08-09 | 2010-04-28 | 郝志刚 | Technological method capable of enhancing ore dressing efficiency and ore dressing index |
| CN101028612B (en) * | 2007-04-02 | 2011-08-24 | 紫金矿业集团股份有限公司 | Closed-circuit method for improving refractory gold ore concentrate quality and recovery rate |
| CN101898167A (en) * | 2010-07-17 | 2010-12-01 | 孙宝海 | Dressing process of gold ores |
| CN103894276A (en) * | 2014-03-03 | 2014-07-02 | 武平紫金矿业有限公司 | Grinding separation technology for silver-containing polymetallic ore |
| CN104148168A (en) * | 2014-08-06 | 2014-11-19 | 哈巴河金坝矿业有限公司 | Ore grinding method and device for gold |
| CN104148188A (en) * | 2014-08-06 | 2014-11-19 | 哈巴河金坝矿业有限公司 | Method and device for gold extraction through cyanide-leaching residues |
| CN104148167A (en) * | 2014-08-06 | 2014-11-19 | 哈巴河金坝矿业有限公司 | Reselection recovery method and device for gold |
| CN106269526A (en) * | 2015-05-22 | 2017-01-04 | 宝山钢铁股份有限公司 | For ore sizing and the device of pulverizing and screening breaking method based on this device |
| CN105562192A (en) * | 2016-01-29 | 2016-05-11 | 武汉理工大学 | Ore dressing and classifying method |
| CN107952571B (en) * | 2016-06-15 | 2019-11-19 | 江苏银服智能装备有限公司 | A kind of production method of Machine-made Sand |
| CN108722881A (en) * | 2018-04-24 | 2018-11-02 | 福建金东矿业股份有限公司 | A kind of metal in chamber box settling sand captures beneficiation method |
| CN109225612B (en) * | 2018-09-20 | 2021-11-12 | 陕西太白黄金矿业有限责任公司 | Novel environment-friendly gold ore dressing process |
| CN111298933B (en) * | 2018-12-12 | 2022-05-27 | 中蓝连海设计研究院有限公司 | Multi-stage crushing method for blocky solids |
| CN109622197A (en) * | 2019-01-31 | 2019-04-16 | 阿勒泰正元国际矿业有限公司 | A kind of beneficiation method and device of gold raw ore |
| CN114534907A (en) * | 2022-03-09 | 2022-05-27 | 中国矿业大学 | Enrichment method and system of low-grade gold ore |
-
2000
- 2000-10-29 CN CNB001239848A patent/CN1133503C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927236B (en) * | 2009-06-24 | 2012-05-23 | 鞍钢集团矿业公司 | Lean hematite dressing fine sieve-table gravity separation process |
| WO2012006937A1 (en) * | 2010-07-15 | 2012-01-19 | 广西有色金属集团汇元锰业有限公司 | Method for grinding manganese dioxide ore |
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| Publication number | Publication date |
|---|---|
| CN1302697A (en) | 2001-07-11 |
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