CN101850306B - Method for increasing floatation recovery rate by improving floatation technique - Google Patents
Method for increasing floatation recovery rate by improving floatation technique Download PDFInfo
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- CN101850306B CN101850306B CN2010101917240A CN201010191724A CN101850306B CN 101850306 B CN101850306 B CN 101850306B CN 2010101917240 A CN2010101917240 A CN 2010101917240A CN 201010191724 A CN201010191724 A CN 201010191724A CN 101850306 B CN101850306 B CN 101850306B
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Abstract
The invention relates to a method for increasing floatation recovery rate by improving a floatation technique, which comprises the following steps: adding a floatation agent and a floatation oil into an agitated tank, and agitating so as to thoroughly mix a collecting agent and the floatation oil with ore slurry; introducing the ore slurry flowing out of the agitated tank into a rougher of a first rough floatation machine; introducing foams, which are scraped from the rougher of the first rough floatation machine, into a fine floatation foam tank as concentrates; and introducing the scavenged foam into the rougher of a second rough floatation machine. In the invention, on one hand, the chance of loss of foam of the first floatation machine into gold minerals at the rear part of the fine floatation operation is reduced, and the recovery rate is increased by about 0.40%, on the other hand, the selection grade of the fine floatation is reduced, prolongs the fine floatation time of other rough floatation machine foam products is prolonged, and the environment for fine floatation is improved.
Description
(1), technical field the present invention relates to a kind of floatation process, particularly a kind of improvement technology that is mainly used in mine valuable mineral flotation.
(2), background technology is in recent years because the decline of down-hole geologic grade and to the increasing of stage casing, top remaining ore recovery (receipts) dynamics, bigger variation has also taken place in the character of selecting smelting factory and office to manage ore.Be embodied in that the content of gold, silver and other valuable metal reduces significantly in the ore, the degree of oxidation of back production (receipts) ore is obviously deepened.
Existing floatation process is: one thick a, essence, sweep.Wherein roughly select, scan, selected some in the flotation device that respectively adopts; Flotation oil is: 11# oil.
According to conventional flotation process, the froth pulp that the initial separatory cell of all roughly selecting flotation device is scraped is introduced and is carried out selectedly in the cleaner cell of precision sorting flotation machine, and the selected froth pulp that scrapes gets in the selected foam tank as the concentrate product.The froth pulp of promptly roughly selecting first flotation device gets into selected operation.The major defect of doing like this is: the first, first roughly select the flotation device froth pulp and get into selected operation after, the chance of loss of part gold mineral is more, influences flotation recovery rate.The spot sampling result sees table one.
Table one
| Selected 1# groove | Selected 2# groove | Selected 3# groove | Selected 4# groove | Roughly select the 1# groove | |
| Concentrate grade g/t | 80.10 | 39.90 | 20.11 | 13.20 | 31.80 |
Visible by table one: as to roughly select the concentrate grade that 1# groove concentrate grade (promptly roughly selecting the grade of the froth pulp of first flotation device) is higher than selected 3#, 4# groove.The concentrate grade of this explanation 1# groove has reached the concentrate grade standard of selected operation basically.
Conventional flotation process is the froth pulp that scrapes from the flotation cell of all roughly selecting flotation device to be introduced carry out selectedly the cleaner cell of precision sorting flotation machine, and the selected froth pulp that scrapes gets in the selected foam tank as the concentrate product.The froth pulp of promptly roughly selecting first flotation device gets into selected operation and carries out selected.The major defect of doing like this is: the first, first roughly select the flotation device froth pulp and get into selected operation after, increased the chance of loss of part gold mineral, influence flotation recovery rate.The second, the selected grade of selected operation is higher, and other selected time of roughly selecting the flotation device froth pulp is then shorter relatively, and the load of selected operation is heavier.
In addition, the collecting effect of the flotation oil of prior art employing is undesirable.
(3), summary of the invention technical problem to be solved by this invention is to provide a kind of through improving the method that floatation process improves flotation recovery rate, through improving the floatation process step and introducing new flotation and improve flotation recovery rate with collecting agent.
Technical scheme of the present invention is following:
A kind of through improving the method that floatation process improves flotation recovery rate, it is characterized in that carrying out according to following steps:
(1), ore is after the ore grinding classification, with the qualified products introducing tank diameter formation ore pulp of classifier overflow;
(2), in tank diameter, add flotation collector and flotation oil, through stirring the flotation collector of adding and flotation oil are fully mixed with ore pulp;
The ore pulp that (3), will from tank diameter, flow out is introduced first initial separatory cell of roughly selecting flotation device;
(4), will introduce the selected foam tank as the concentrate product from the foam that first initial separatory cell of roughly selecting flotation device scrapes; The foam that scrapes from second later initial separatory cell of roughly selecting flotation device gets into and carries out selectedly the cleaner cell of precision sorting flotation machine, and the foam after selected is introduced in the selected foam tank as the concentrate product; Scan in the scavenger flotation cell of the ore pulp entering scavenging flotation machine after roughly selecting, second of the froth pulp introducing of scanning roughly selected in the initial separatory cell of flotation device.
Wherein, the flotation collector in (2) step is by 50～80% dibutyl phosphordithiic acid sodium, the composition that 10～15% diamyl disulfides are formed for the second sulphur ammoniacum of sodium phosphate and 5～40%; Described percentage is percentage by weight; The addition of collecting agent is 10-30g/t.
Good effect of the present invention is: (1), ore fully mix at tank diameter with flotation oil, medicine through the qualified products that ore grinding, graded operation produce; After first flotation device roughly selected in entering; Some floatabilities preferably; As: rusty gold, electrum, contain the higher mineral such as chalcopyrite of gold grade at first by mineralising emersion in first flotation device, its froth pulp need not pass through and selectedly can directly get into next process as Gold Concentrate under Normal Pressure.This technology and traditional handicraft (all roughly select froth pulp all get into selected operation selected) are compared, and the one, reduce first and roughly selected the chance of loss that the flotation device froth pulp gets into selected operation rear section gold mineral, improved flotation recovery rate.The 2nd, prolong other and roughly selected the selected time of flotation device froth pulp, improved the environment of selected operation.(2), the composition formed by a certain percentage for sodium phosphate and second sulphur ammoniacum by dibutyl phosphordithiic acid sodium, diamyl disulfide of collecting agent.Add in the tank diameter of this collecting agent before roughly selecting, under the prerequisite that does not influence concentrate grade, can assist the raising recovery rate in ore-dressing.
(4), the specific embodiment is below in conjunction with the practical implementation method, further specifies the present invention.
Embodiment one
(1), ore is after the ore grinding classification, with classifier overflow (certified products) adding tank diameter formation ore pulp;
(2), in tank diameter, add collecting agent and flotation oil, stir down the collecting agent of adding and flotation oil fully mixed with ore pulp;
Wherein flotation oil is according to conventional formulation and consumption.
Wherein, Collecting agent is by 65% dibutyl phosphordithiic acid sodium, the composition that 12% diamyl disulfide is formed for the second sulphur ammoniacum of sodium phosphate and 23%; Under the situation that does not change original flotation oil kind, consumption, to add in the tank diameter of this collecting agent before roughly selecting, addition is 10-30g/t; The adding mode is dropping, and stirs with ore pulp.
The ore pulp that (3), will from tank diameter, flow out is introduced in first initial separatory cell of roughly selecting flotation device and is roughly selected;
(4), will introduce the selected foam tank as the concentrate product from the foam that first initial separatory cell of roughly selecting flotation device scrapes.The foam that scrapes from second later initial separatory cell of roughly selecting flotation device get into carry out the cleaner cell of precision sorting flotation machine selected; Foam after selected is introduced in the selected foam tank as the concentrate product.Scan in the scavenger flotation cell of the ore pulp entering scavenging flotation machine after roughly selecting, second of the foam introducing of scanning roughly selected in the initial separatory cell of flotation device; Ore pulp after scanning is a mine tailing.
Wherein, roughly select flotation device and be provided with at least three, the flow direction of ore pulp flows into second successively by first initial separatory cell of roughly selecting flotation device and roughly selects the initial separatory cell of flotation device, the 3rd initial separatory cell of roughly selecting flotation device, and the like.Precision sorting flotation machine is provided with at least three, and the flow direction of ore pulp flows into the cleaner cell of second precision sorting flotation machine, the cleaner cell of the 3rd precision sorting flotation machine successively by the cleaner cell of first precision sorting flotation machine, and the like.Scavenging flotation machine is provided with at least three, and the flow direction of ore pulp flows into the scavenger flotation cell of second scavenging flotation machine, the scavenger flotation cell of the 3rd scavenging flotation machine successively by the scavenger flotation cell of first scavenging flotation machine, and the like.
According to the process conditions (four flotation devices of selected employing) of present embodiment, the spot sampling result sees table two.
Table two
| Selected 1# groove | Selected 2# groove | Selected 3# groove | Selected 4# groove | Roughly select the 1# groove | |
| Concentrate grade g/t | 92.20 | 58.60 | 41.80 | 31.80 | 89.00 |
Five groove bulk concentrate grade: 71.6g/t.
Visible by table two, owing to added collecting agent, the concentrate grade that the present invention roughly selects the 1# groove is bigger than table one raising, only is lower than the concentrate grade of selected 1# groove and is higher than five groove bulk concentrate grades, and this explains that collecting agent effect of the present invention is very obvious.
The applicant is through 5 months production practices, obtains industrial the key technical indexes before and after the technological transformation, sees table three
Table three
| Time | Head grade (g/t) | Concentrate grade (g/t) | Tailings grade (g/t) | The rate of recovery (%) | Concentration ratio (doubly) |
| Adopt common process (in January, 2009-April) | 2.13 | 73.42 | 0.109 | 95.04 | 34.47 |
| Adopt technology of the present invention (in May, 2009-September) | 2.14 | 75.62 | 0.100 | 95.44 | 35.28 |
Visible by table three, under the constant basically situation of head grade, concentrate grade has improved 2.2g/t, and tailings grade has reduced 0.09g/t, and flotation recovery rate has improved 0.40%.
Embodiment two
Wherein, collecting agent is by 80% dibutyl phosphordithiic acid sodium, the composition that 10% diamyl disulfide is formed for the second sulphur ammoniacum of sodium phosphate and 10%.
Embodiment three
Wherein, collecting agent is by 50% dibutyl phosphordithiic acid sodium, the composition that 15% diamyl disulfide is formed for the second sulphur ammoniacum of sodium phosphate and 35%.
Claims (2)
1. one kind is passed through to improve the method that floatation process improves flotation recovery rate, it is characterized in that carrying out according to following steps:
(1), ore is after the ore grinding classification, with the qualified products introducing tank diameter formation ore pulp of classifier overflow;
(2), in tank diameter, add flotation collector and flotation oil, through stirring the flotation collector of adding and flotation oil are fully mixed with ore pulp;
The ore pulp that (3), will from tank diameter, flow out is introduced first initial separatory cell of roughly selecting flotation device;
(4), will introduce the selected foam tank as the concentrate product from the foam that first initial separatory cell of roughly selecting flotation device scrapes; The foam that scrapes from second later initial separatory cell of roughly selecting flotation device gets into and carries out selectedly the cleaner cell of precision sorting flotation machine, and the foam after selected is introduced in the selected foam tank as the concentrate product; Scan in the scavenger flotation cell of the ore pulp entering scavenging flotation machine after roughly selecting, second of the froth pulp introducing of scanning roughly selected in the initial separatory cell of flotation device.
2. according to claim 1 through improving the method that floatation process improves flotation recovery rate; It is characterized in that: wherein, the flotation collector in (2) step is by 50～80% dibutyl phosphordithiic acid sodium, the composition that 10～15% diamyl disulfides are formed for the second sulphur ammoniacum of sodium phosphate and 5～40%; Described percentage is percentage by weight; The addition of collecting agent is 10-30g/t.
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| CN101850306B true CN101850306B (en) | 2012-09-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105022302B (en) * | 2015-08-11 | 2018-01-09 | 中国黄金集团内蒙古矿业有限公司 | Mix featured goods level controlling system and control method |
| CN107716131B (en) * | 2016-08-11 | 2019-09-10 | 丹东丹银矿冶有限责任公司 | Grind grading and flotation carbon removal system |
| CN112237986A (en) * | 2020-11-12 | 2021-01-19 | 力上资源科技开发有限公司 | Mineral flotation process |
| CN115178346A (en) * | 2022-07-18 | 2022-10-14 | 山东黄金矿业科技有限公司选冶实验室分公司 | Ore grinding quality control method for pyrite in gold ore |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562491A (en) * | 2004-04-06 | 2005-01-12 | 南京栖霞山锌阳矿业有限公司 | Multiple step flotation technique for raising rate of reclaiming silver in plumbum |
| CN1680042A (en) * | 2004-04-05 | 2005-10-12 | 黎东明 | Stepped flotation of tin, lead and zinc sulfide mine |
| CN1799698A (en) * | 2006-01-09 | 2006-07-12 | 昆明理工大学 | Method for reclaiming valuable mineral from concentrated tailings of stannum-contained multi-metal sulphide ore |
| CN1321746C (en) * | 2005-09-02 | 2007-06-20 | 青海金瑞矿业发展股份有限公司 | Deslim-floatation celestite inished ore process |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680042A (en) * | 2004-04-05 | 2005-10-12 | 黎东明 | Stepped flotation of tin, lead and zinc sulfide mine |
| CN1562491A (en) * | 2004-04-06 | 2005-01-12 | 南京栖霞山锌阳矿业有限公司 | Multiple step flotation technique for raising rate of reclaiming silver in plumbum |
| CN1321746C (en) * | 2005-09-02 | 2007-06-20 | 青海金瑞矿业发展股份有限公司 | Deslim-floatation celestite inished ore process |
| CN1799698A (en) * | 2006-01-09 | 2006-07-12 | 昆明理工大学 | Method for reclaiming valuable mineral from concentrated tailings of stannum-contained multi-metal sulphide ore |
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