CN104148167A - Reselection recovery method and device for gold - Google Patents
Reselection recovery method and device for gold Download PDFInfo
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- CN104148167A CN104148167A CN201410384136.7A CN201410384136A CN104148167A CN 104148167 A CN104148167 A CN 104148167A CN 201410384136 A CN201410384136 A CN 201410384136A CN 104148167 A CN104148167 A CN 104148167A
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Abstract
The invention discloses a reselection recovery method for gold. The method comprises the following steps that primary ore grinding is carried out on raw ore, ore pulp generated after ore grinding is sorted by a jigging machine, magnetic separation is carried out on jigged concentrates, and jigged tailings enter a classifier; the magnetic concentrates are selected finely to obtain iron ore concentrates, the magnetic tailings enter a table concentrator, and concentrates of the table concentrator are adopted as alloy gold; classification and machine overflowing are carried out on middlings and tailings of the table concentrator, the middlings and the tailings enter the cyclone, and coarse particles return to a first-stage ball grinder to be ground again; the cyclone carries out overflowing, the floatation operation is executed, secondary ore grinding is carried out on cinnabar, and materials obtained after ore grinding enter a Nelson concentrating machine; floatation is carried out on tailings of the Nelson concentrating machine, and concentrates begin to be jigged; the jigged concentrates enter the table concentrator, and jigged tailings return to the cyclone to be classified; the concentrates and the tailings are obtained through flotation. According to the reselection recovery method for the gold, the reselection recovery rate is improved by 22.11 percent, and the total recovery rate of ore dressing is improved by 2.69 percent.
Description
Technical field
The present invention relates to gold ore technical field, relate in particular to a kind of gravity treatment recovery method and device thereof of gold.
Background technology
Floatation Process Theory and research mainly concentrated on the aspect such as flocculating polymer and hydrophobic reunion theory and column-type floatation theory in the solution chemistry theory, fine particles flotation of sulfide flotation electrochemical theory, oxide ore and Saline minerals flotation in the last few years, due to gold mineral and sulfide mineral, particularly the flotation nature of copper sulfide mineral is very similar, so about the Floatation Process Theory of sulphide ore also has and instructs and reference function gold ore flotation, wherein Flotation Electrochemistry theory more has direct using value to golden flotation.The development of electrochemical theory has produced a new application, ore pulp electrochemistry, and it can be realized without collecting agent flotation by controlling pulp potential.To make sulfide mineral appropriateness oxidation by controlling pulp potential without collecting agent flotation, at its Surface Creation elementary sulfur (S) thus the hydrophobicity of bringing out mineral is able to flotation.
Theoretical research finding for gold mineralization flotation is few, there is the method reporting with solvent floatation, that carries out obtaining from chlorination pretreatment extracts golden research containing the chlorinated solution of low-grade gold, (ion flotation) after golden emersion in weak solution directly being entered to organic extractant phase in homemade device reclaims, from containing having reclaimed 99% gold the chlorated liquid of golden 10-6 and only having used 2h, improve gold recovery 23% than ion floatation method, and greatly save time again than simple solvent extraction.Solvent floatation likely for physics and chemistry gold extracting method further combined with new enlightenment is provided.
What adopt is that material after primary grinding enters jigging machine before, and jig concentrate enters shaking table, and table concentrate becomes gold containing material through smelting, and shaking table chats mine tailing enters cyclone; Jigging mine tailing enters grader, and classifier overflow enters eddy flow, and coarse grain enters primary grinding; Cyclone overflow enters flotation operation, and cinnabar returns to Secondary grinding mill and regrinds; Flotation obtains Gold Concentrate under Normal Pressure and mine tailing, exists at present reselection operation and belongs to open circuit, and this part that does not sort out through gravity treatment also needs ore grinding again, has increased ore grinding cost, and has influence on the index of follow-up flotation.
Summary of the invention
The object of the invention is existing golden reselecting method to improve, provide that a kind of cost is low, recovery method and the device of nonhazardous, economic a kind of golden gravity treatment.
The present invention adopts following technical scheme:
The concrete steps of the gravity treatment recovery method of gold of the present invention are as follows:
(1) raw ore is accounted for to 60% be milled to-0.074mm and accounted for 75% by-0.074mm; ;
(2) material that step (1) obtains enters JT5-2 sawtooth wave mode jigging machine, is that 1g/t is that concentrate I and gold grade are the following mine tailing I of 1g/t above through a jigging machine screening point gold grade;
(3) concentrate that step (2) obtains enters under the condition that CTB600*900 magnetic separator is 170Ka/m in magnetic field intensity and carries out magnetic separation, the part that obtains grade after magnetic separation and be more than 12% part and be crude iron concentrate and grade and be below 12% is mine tailing II, and mine tailing I enters grader;
(4) it is that more than 65% iron ore concentrate and grade are below 0.5% to be mine tailing III that the crude iron concentrate that step (3) obtains carries out selected acquisition grade again, step (3) obtains mine tailing II and the selected mine tailing III of crude iron concentrate all enters shaking table, shaking table stroke is 15mm, jig frequency is 360 beats/min, the bed surface gradient is 3 degree, and it is more than 60% for table concentrate II, grade are that 2g/t is that chats and grade are that 0.5g/t is mine tailing IV below below that shaking table screening obtains gold grade;
(5) the table concentrate II that step (4) obtains obtains gold containing material through smelting, and chats and mine tailing IV enter cyclone;
(6) in step (3), enter the material of grader classified after, the above coarse grain of 0.074mm returns to the overflow portion that step (1)-0.074mm accounts for more than 50% and enters cyclone;
(7) in step (6), enter the material of cyclone classified after ,-0.074mm accounts for more than 75% part and enters flotation operation ,-0.074mm accounts for 25% part and enters Secondary grinding mill;
(8) material that enters Secondary grinding mill in step (7) is after ore grinding, enter stl-1200 Knelson concentrator, be 90G at gravity rotating speed, under the condition that liquefied water speed is 3.0L/min, sort, after ore dressing, obtain grade and be more than 5g/t for concentrate III and grade be to be mine tailing V below 5g/t;
(9) in step (8), the concentrate III of Knelson concentrator enters the shaking table in step (5), mine tailing V enters jigging machine, through JT3-1 jigging machine screening obtain grade be more than 5g/t for concentrate IV and grade be that 5g/t is mine tailing VI below;
(10) in step (9), the concentrate IV of jigging machine enters the shaking table in step (5), and mine tailing VI enters the cyclone in step (7);
(11) material that enters flotation operation in step (7) through one roughing, secondary scan, triple cleaning, obtain grade and be 105g/t above for concentrate V and grade are the following mine tailing VII of 0.15g/t.
The device that the gravity treatment of gold of the present invention is reclaimed, comprise ball mill, jigging machine, magnetic separator, grader, cyclone, shaking table, Knelson concentrator, flotation device, the outlet of ore mill connects jigging machine import, jigging machine outlet connects magnetic separator import, magnetic separator concentrate is iron ore concentrate, and the outlet of magnetic separator mine tailing connects shaking table import; Table concentrate outlet is smelted, and through smelting for gold containing material, shaking table chats mine tailing connects cyclone inlets; The outlet of jigging machine mine tailing connects grader import, and classifier overflow connects cyclone inlets, and grader outlet connects the import of primary grinding machine; Cyclone overflow outlet connects flotation device import, and cinnabar connects the import of secondary grinding machine; Ore mill outlet connects Knelson concentrator import, and Nelson's concentrate connects flotation import, and Nelson's mine tailing connects jigging machine import; The outlet of jigging machine concentrate connects shaking table import, and the outlet of jigging machine mine tailing connects cyclone inlets.
The reselecting method of gold of the present invention is mainly the principle that adopts stage grinding stage grading, utilizes the method that gravity treatment+magnetic separation combines to sort.
Good effect of the present invention is as follows:
The present invention is directed to the problem of current existence, the iron filings after transformation in gravity treatment Gold Concentrate under Normal Pressure obviously reduce, and gravity concentrate grade just can directly be smelted more than bringing up to 8Og/t by not enough 6Og/t after simple process; Gravity treatment chats and mine tailing stir fully, substantially there is not the phenomenon that slag stock pump stops up, chats and mine tailing turn back to grinding flowsheet very smoothly, reselection operation has been realized closed cycle, not only reduce operating personnel's labour intensity, reduced metal loss, and gravity treatment water can all realize cycling and reutilization, alleviate the contradiction of short water supply.Increase by two sections of gravity treatments, adopt Knelson concentrator to reclaim mustard gold simultaneously, the gravity treatment rate of recovery has improved 22.11%, and ore dressing overall recovery improves 2.69%, 220 tons of year broken steel ball iron ore concentrates of recovery, and correctional effect is very remarkable.
Brief description of the drawings
Fig. 1 is the process chart of the golden gravity treatment recovery method before improving.
Fig. 2 is the process chart of the gravity treatment recovery method of gold of the present invention.
Detailed description of the invention
The following examples are to describe in further detail of the present invention.
Annexation between the each equipment of the present invention is as follows:
The outlet of ore mill connects jigging machine import, and jigging machine outlet connects magnetic separator import, and magnetic separator concentrate is iron ore concentrate, and the outlet of magnetic separator mine tailing connects shaking table import;
Table concentrate outlet is smelted, and through smelting for gold containing material, shaking table chats mine tailing connects cyclone inlets;
The outlet of jigging machine mine tailing connects grader import, and classifier overflow connects cyclone inlets, and grader outlet connects the import of primary grinding machine;
Cyclone overflow outlet connects flotation device import, and cinnabar connects the import of secondary grinding machine;
Ore mill outlet connects Knelson concentrator import, and Nelson's concentrate connects flotation import, and Nelson's mine tailing connects jigging machine import;
The outlet of jigging machine concentrate connects shaking table import, and the outlet of jigging machine mine tailing connects cyclone inlets.
Beneficiation method is as follows:
(1) raw ore is accounted for to 60% be milled to-0.074mm and accounted for 75% by-0.074mm;
(2) material that step (1) obtains enters JT5-2 sawtooth wave mode jigging machine, is that 1g/t is that concentrate I and gold grade are the following mine tailing I of 1g/t above through a jigging machine screening point gold grade;
(3) concentrate that step (2) obtains enters under the condition that CTB600*900 magnetic separator is 170Ka/m in magnetic field intensity and carries out magnetic separation, the part that obtains grade after magnetic separation and be more than 12% part and be crude iron concentrate and grade and be below 12% is mine tailing II, and mine tailing I enters grader;
(4) it is that more than 65% iron ore concentrate and grade are below 0.5% to be mine tailing III that the crude iron concentrate that step (3) obtains carries out selected acquisition grade again, step (3) obtains mine tailing II and the selected mine tailing III of crude iron concentrate all enters shaking table, shaking table stroke is 15mm, jig frequency is 360 beats/min, the bed surface gradient is 3 degree, and it is more than 60% for table concentrate II, grade are that 2g/t is that chats and grade are that 0.5g/t is mine tailing IV below below that shaking table screening obtains gold grade;
(5) the table concentrate II that step (4) obtains obtains gold containing material through smelting, and chats and mine tailing IV enter cyclone;
(6) in step (3), enter the material of grader classified after, the above coarse grain of 0.074mm returns to the overflow portion that step (1)-0.074mm accounts for more than 50% and enters cyclone;
(7) in step (6), enter the material of cyclone classified after ,-0.074mm accounts for more than 75% part and enters flotation operation ,-0.074mm accounts for 25% part and enters Secondary grinding mill;
(8) material that enters Secondary grinding mill in step (7) is after ore grinding, enter stl-1200 Knelson concentrator, be 90G at gravity rotating speed, under the condition that liquefied water speed is 3.0L/min, sort, after ore dressing, obtain grade and be more than 5g/t for concentrate III and grade be to be mine tailing V below 5g/t;
(9) in step (8), the concentrate III of Knelson concentrator enters the shaking table in step (5), mine tailing V enters jigging machine, through JT3-1 jigging machine screening obtain grade be more than 5g/t for concentrate IV and grade be that 5g/t is mine tailing VI below;
(10) in step (9), the concentrate IV of jigging machine enters the shaking table in step (5), and mine tailing VI enters the cyclone in step (7);
(11) material that enters flotation operation in step (7) through one roughing, secondary scan, triple cleaning, obtain grade and be 105g/t above for concentrate V and grade are the following mine tailing VII of 0.15g/t.
Specific embodiments is as follows:
Gold flotation tailing is through 1 φ 2736 ball mill, ball mill discharge enters 3 JT5-2 zigzag jigging machines, jig concentrate enters 2 CTB φ 600 × 900 magnetic separators, magnetic concentrate is iron ore concentrate, grade is 65.2%, mine tailing enters 10 6S shaking tables, and table concentrate is through smelting for gold containing material, and shaking table chats mine tailing enters φ 250 a cluster cyclones; Jigging mine tailing enters FLG-24 grader, and classifier overflow enters φ 250 a cluster cyclones, and sand return enters φ 2736 ball mills; Cyclone overflow enters 13 4m3 flotation devices and carries out flotation, obtains Gold Concentrate under Normal Pressure and mine tailing; Cyclone cinnabar enters φ 2130 ball mill ore grindings, mill discharge enters 1 stl-1200 Knelson concentrator, and Nelson's concentrate enters flotation, and Nelson's mine tailing enters 2 JT3-2 zigzag jigging machines, jigging machine concentrate enters shaking table, and jigging machine mine tailing returns to cyclone.After transformation, gravity treatment rate of recovery increase rate is larger, and according to year processing 210,000 tons of calculating, ore dressing overall recovery improves 2.69%, every year can voluminous gold 24.7kg, reclaim 220 tons of broken steel ball iron ore concentrates, and have a net increase of 2,870,000 yuan of benefits.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present invention is limited by claims and equivalent thereof.
Claims (2)
1. a golden gravity treatment recovery method, is characterized in that: the concrete steps of described method are as follows: (1) is accounted for raw ore 60% be milled to-0.074mm and accounted for 75% by-0.074mm;
(2) material that step (1) obtains enters JT5-2 sawtooth wave mode jigging machine, is that 1g/t is that concentrate I and gold grade are the following mine tailing I of 1g/t above through a jigging machine screening point gold grade;
(3) concentrate that step (2) obtains enters under the condition that CTB600*900 magnetic separator is 170Ka/m in magnetic field intensity and carries out magnetic separation, the part that obtains grade after magnetic separation and be more than 12% part and be crude iron concentrate and grade and be below 12% is mine tailing II, and mine tailing I enters grader;
(4) it is that more than 65% iron ore concentrate and grade are below 0.5% to be mine tailing III that the crude iron concentrate that step (3) obtains carries out selected acquisition grade again, step (3) obtains mine tailing II and the selected mine tailing III of crude iron concentrate all enters shaking table, shaking table stroke is 15mm, jig frequency is 360 beats/min, the bed surface gradient is 3 degree, and it is more than 60% for table concentrate II, grade are that 2g/t is that chats and grade are that 0.5g/t is mine tailing IV below below that shaking table screening obtains gold grade;
(5) the table concentrate II that step (4) obtains obtains gold containing material through smelting, and chats and mine tailing IV enter cyclone;
(6) in step (3), enter the material of grader classified after, the above coarse grain of 0.074mm returns to the overflow portion that step (1)-0.074mm accounts for more than 50% and enters cyclone;
(7) in step (6), enter the material of cyclone classified after ,-0.074mm accounts for more than 75% part and enters flotation operation ,-0.074mm accounts for 25% part and enters Secondary grinding mill;
(8) material that enters Secondary grinding mill in step (7) is after ore grinding, enter stl-1200 Knelson concentrator, be 90G at gravity rotating speed, under the condition that liquefied water speed is 3.0L/min, sort, after ore dressing, obtain grade and be more than 5g/t for concentrate III and grade be to be mine tailing V below 5g/t;
(9) in step (8), the concentrate III of Knelson concentrator enters the shaking table in step (5), mine tailing V enters jigging machine, through JT3-1 jigging machine screening obtain grade be more than 5g/t for concentrate IV and grade be that 5g/t is mine tailing VI below;
(10) in step (9), the concentrate IV of jigging machine enters the shaking table in step (5), and mine tailing VI enters the cyclone in step (7);
(11) material that enters flotation operation in step (7) through one roughing, secondary scan, triple cleaning, obtain grade and be 105g/t above for concentrate V and grade are the following mine tailing VII of 0.15g/t.
2. the device that golden gravity treatment is reclaimed, comprise ball mill, jigging machine, magnetic separator, grader, cyclone, shaking table, Knelson concentrator, flotation device, it is characterized in that: the outlet of ore mill connects jigging machine import, jigging machine outlet connects magnetic separator import, magnetic separator concentrate is iron ore concentrate, and the outlet of magnetic separator mine tailing connects shaking table import; Table concentrate outlet is smelted, and through smelting for gold containing material, shaking table chats mine tailing connects cyclone inlets; The outlet of jigging machine mine tailing connects grader import, and classifier overflow connects cyclone inlets, and grader outlet connects the import of primary grinding machine; Cyclone overflow outlet connects flotation device import, and cinnabar connects the import of secondary grinding machine; Ore mill outlet connects Knelson concentrator import, and Nelson's concentrate connects flotation import, and Nelson's mine tailing connects jigging machine import; The outlet of jigging machine concentrate connects shaking table import, and the outlet of jigging machine mine tailing connects cyclone inlets.
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Cited By (13)
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| CN104874471A (en) * | 2015-06-09 | 2015-09-02 | 湖南辰州矿业股份有限公司 | Process for beneficiation and separation of low-grade gold, antimony and tungsten coexistence raw ore |
| CN105797841A (en) * | 2014-12-29 | 2016-07-27 | 北京有色金属研究总院 | Beneficiation process for increasing recovery rate of gold of refractory gold ores |
| CN106669963A (en) * | 2015-11-11 | 2017-05-17 | 沈阳有色金属研究院 | Pre-concentration method for ore separation of gold tailings |
| CN107115959A (en) * | 2017-05-10 | 2017-09-01 | 吉林吉恩镍业股分有限公司 | The method that packed in gangue micro-fine-grained gold in mine tailing is reclaimed with Nelson's gravitational separation equipment |
| CN107694743A (en) * | 2016-08-09 | 2018-02-16 | 文县白杨林矿业有限公司 | A kind of system of processing and its method that barite is separated from mine tailing |
| CN108300868A (en) * | 2018-01-12 | 2018-07-20 | 灵宝金源矿业股份有限公司 | A kind of method that gold ore leaches tailing high efficiente callback low content gold |
| CN108355829A (en) * | 2018-02-09 | 2018-08-03 | 内蒙古金陶股份有限公司 | The reselecting method of gold |
| CN108380381A (en) * | 2018-05-02 | 2018-08-10 | 陕西冶金设计研究院有限公司 | A kind of Quartz Vein Type slightly in the pure gravity concentration apparatus of grain gold mine and method |
| CN110013918A (en) * | 2019-01-15 | 2019-07-16 | 中国地质科学院郑州矿产综合利用研究所 | Method for improving gold recovery rate of semi-primary semi-oxidized gold ore by full flotation process |
| CN110292990A (en) * | 2019-07-11 | 2019-10-01 | 河南省岩石矿物测试中心 | Method for improving gold recovery rate and beneficiation efficiency |
| CN112138859A (en) * | 2020-08-29 | 2020-12-29 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Beneficiation process for gold-containing oxidized ore |
| CN112570137A (en) * | 2020-05-20 | 2021-03-30 | 汕头市国富锆钛实业有限公司 | Beneficiation method for separating zirconite by using grading jigger |
| CN112844816A (en) * | 2021-03-18 | 2021-05-28 | 河南金源黄金矿业有限责任公司 | Gravity separation regrinding process and equipment for treating Nielsen products |
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| CN105797841A (en) * | 2014-12-29 | 2016-07-27 | 北京有色金属研究总院 | Beneficiation process for increasing recovery rate of gold of refractory gold ores |
| CN105797841B (en) * | 2014-12-29 | 2018-03-16 | 北京有色金属研究总院 | A kind of ore-dressing technique for the rate of recovery for improving difficult-treating gold mine gold |
| CN104874471A (en) * | 2015-06-09 | 2015-09-02 | 湖南辰州矿业股份有限公司 | Process for beneficiation and separation of low-grade gold, antimony and tungsten coexistence raw ore |
| CN106669963A (en) * | 2015-11-11 | 2017-05-17 | 沈阳有色金属研究院 | Pre-concentration method for ore separation of gold tailings |
| CN107694743A (en) * | 2016-08-09 | 2018-02-16 | 文县白杨林矿业有限公司 | A kind of system of processing and its method that barite is separated from mine tailing |
| CN107115959A (en) * | 2017-05-10 | 2017-09-01 | 吉林吉恩镍业股分有限公司 | The method that packed in gangue micro-fine-grained gold in mine tailing is reclaimed with Nelson's gravitational separation equipment |
| CN108300868A (en) * | 2018-01-12 | 2018-07-20 | 灵宝金源矿业股份有限公司 | A kind of method that gold ore leaches tailing high efficiente callback low content gold |
| CN108355829A (en) * | 2018-02-09 | 2018-08-03 | 内蒙古金陶股份有限公司 | The reselecting method of gold |
| CN108380381A (en) * | 2018-05-02 | 2018-08-10 | 陕西冶金设计研究院有限公司 | A kind of Quartz Vein Type slightly in the pure gravity concentration apparatus of grain gold mine and method |
| CN110013918A (en) * | 2019-01-15 | 2019-07-16 | 中国地质科学院郑州矿产综合利用研究所 | Method for improving gold recovery rate of semi-primary semi-oxidized gold ore by full flotation process |
| CN110292990A (en) * | 2019-07-11 | 2019-10-01 | 河南省岩石矿物测试中心 | Method for improving gold recovery rate and beneficiation efficiency |
| CN112570137A (en) * | 2020-05-20 | 2021-03-30 | 汕头市国富锆钛实业有限公司 | Beneficiation method for separating zirconite by using grading jigger |
| CN112138859A (en) * | 2020-08-29 | 2020-12-29 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Beneficiation process for gold-containing oxidized ore |
| CN112844816A (en) * | 2021-03-18 | 2021-05-28 | 河南金源黄金矿业有限责任公司 | Gravity separation regrinding process and equipment for treating Nielsen products |
| CN112844816B (en) * | 2021-03-18 | 2024-01-19 | 河南金源黄金矿业有限责任公司 | Gravity dressing regrinding process and equipment for treating Nelson products |
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