CN102658233A - Method for recovering pyrite from flotation tailings of sulfide ore - Google Patents
Method for recovering pyrite from flotation tailings of sulfide ore Download PDFInfo
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- CN102658233A CN102658233A CN2012101235397A CN201210123539A CN102658233A CN 102658233 A CN102658233 A CN 102658233A CN 2012101235397 A CN2012101235397 A CN 2012101235397A CN 201210123539 A CN201210123539 A CN 201210123539A CN 102658233 A CN102658233 A CN 102658233A
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- mine tailing
- flotation
- ammonium bicarbonate
- sulphur
- pyrite
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Abstract
The invention provides a method for recovering pyrite from flotation tailings of sulfide ore. According to the method, the pyrite can be fully recovered, the problems of environment and safety are solved, the corrosion to equipment is avoided, and the production cost is reduced. The method comprises the detailed steps of: firstly preparing ammonium bicarbonate and water into ammonium bicarbonate solution; and then adding the ammonium bicarbonate solution into the tailings after floation, simultaneously adding a collecting agent and a foaming agent and carrying out sulfur flotation. The method provided by the invention has the advantages that not only can the pyrite be fully recovered, but also the problems of environment and safety are solved, the corrosion to the equipment is avoided; and meanwhile since the unit price of the ammonium bicarbonate is lower and the used amount is less, so the production cost is reduced.
Description
Technical field
The invention belongs to the technique of preparing field, relate to and reclaim pyritous method in a kind of sulfide flotation mine tailing.
Background technology
Sulfur mineral-the pyrite that all contains different grades in most sulfide flotation mine tailings; If sending into tailing dam to this part pyrite does not reclaim; It is a kind of waste of resource; In the long distances process of mine tailing, increased the burden that mine tailing is carried again, reduced the length of service of tailing dam simultaneously.Therefore, the ore dressing plant has increased mine tailing and has selected the sulphur operation, reclaims this part pyrite, economic benefit and obvious social benefit.But sorting in the process of ore; The flotation operation of front has added some medicaments the pyrite in the ore has been suppressed in order to improve concentrate grade; Select the sulphur operation to cause difficulty to mine tailing; So select at mine tailing and to have added the pyritous activator of some activation in the sulphur process, to utilize the pyrite that reclaims in the flotation tailing; But the pyritous method of existing recovery exists environment and safety problem, and equipment corrosion is more serious, has shortened the service life of equipment, and production cost is higher.
Summary of the invention
In order to overcome the problem that exists in the above-mentioned prior art; The purpose of this invention is to provide and reclaim pyritous method in a kind of sulfide flotation mine tailing; Can not only fully reclaim the pyrite in the flotation tailing, and solve environment and safety problem, prolong the service life of equipment.
For realizing above-mentioned purpose; The technical scheme that the present invention adopted is: reclaim pyritous method in a kind of sulfide flotation mine tailing; Can fully reclaim pyrite, solve environment and safety problem, and avoid corrosion on Equipment; Reduce production cost, at first carbonic hydroammonium and water have been mixed with ammonium bicarbonate soln; With in the mine tailing behind this ammonium bicarbonate soln adding flotation operation, add collecting agent and foaming agent simultaneously then, select sulphur.
The concentration of ammonium bicarbonate soln is 10%～15%.
Add the ammonium bicarbonate soln that contains 1.5 kilograms of carbonic hydroammonium in the mine tailing behind the flotation operation per ton.
In the JJF-16 flotation device, select sulphur.
The inventive method is added carbonic hydroammonium as activator when mine tailing selects the sulphur operation, can not only fully reclaim pyrite, and solve environment and safety problem, and avoid corrosion on Equipment; Because the carbonic hydroammonium unit price is lower, consumption is few, has reduced production cost simultaneously.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is elaborated.
The existing pyritous method that reclaims in the sulfide flotation mine tailing all is in flotation tailing, to add activator, eliminates in the floatation process in order to improve medicament that concentrate grade adds to pyritous inhibition in the ore, and what be beneficial to mine tailing selects the sulphur operation.General sulfuric acid or the copper sulphate of adopting is as activator, but sulphuric acid is a strong corrosive, and can produce SO in the adding ore pulp
2Gas exists environment and safety problem in the production; Copper sulphate is corrosive to equipment, shortens the service life of equipment, and the unit price of copper sulphate medicament is high, and production cost is high.In order to overcome the problem that exists in the prior art; The invention provides a kind of pyritous method that from the sulfide flotation mine tailing, reclaims, can not only fully reclaim pyrite, and solve environment and safety problem; And avoided corrosion on Equipment; Reduced production cost, this method is specially: at first that carbonic hydroammonium is soluble in water, be mixed with concentration and be 10～15% ammonium bicarbonate soln; Then in the ratio that adds 1.5 kilograms of carbonic hydroammonium in the mine tailing behind the flotation operation per ton; In the mine tailing behind the ammonium bicarbonate soln adding flotation operation of the corresponding weight of preparing; And add collecting agent and foaming agent simultaneously, and in the JJF-16 flotation device, the mine tailing behind the flotation operation being selected sulphur, the foam that obtains is the sulphur concentrate; Underflow is for selecting mine tailing behind the sulphur, this is selected sulphur after mine tailing send into tailing dam.
The concentration of the ammonium bicarbonate soln that adopts in the inventive method is 10～15%.Because mine tailing selects the addition of the carbonic hydroammonium that needs in the sulphur operation to fix in the unit interval; If ammonium bicarbonate soln concentration is lower than 10%, ammonium bicarbonate soln concentration reduces, can the unit of making the addition of the corresponding ammonium bicarbonate soln of mine tailing strengthen; Unit interval intracellular bicarbonate ammonium dissolving number of times also increases; Labour intensity strengthens, and the water consumption of dissolving carbonic hydroammonium increases the unit consumption of increase water.If ammonium bicarbonate soln concentration is higher than 15%, because 20
oThe solubility of carbonic hydroammonium in water is 21.7% during C, and produced on-site generally all is lower than 20 with coolant-temperature gage
oC, so the solubility of carbonic hydroammonium in water is lower than 21.7%, if not fully dissolving of carbonic hydroammonium can cause drug delivery pump and pipeline blockage, normally carries out in order to guarantee to produce, the upper limit of concentration of ammonium bicarbonate soln is 15%.
Add 1.5 kilograms of carbonic hydroammonium in the mine tailing behind the flotation operation per ton and can reclaim the pyrite in the mine tailing to greatest extent; If the carbonic hydroammonium consumption is greater than 1.5 kg/ton; The carbonic hydroammonium consumption increases and the pyritous rate of recovery increases not obviously, causes the waste of carbonic hydroammonium; If the carbonic hydroammonium consumption is less than 1.5 kg/ton, just fully the pyrite in the activation mine tailing reclaims the pyrite in the mine tailing to greatest extent, causes the pyrite loss.
Collecting agent is a butyl xanthate, and the tailing dry ore deposit amount consumption behind the corresponding flotation operation is the 100g/ ton; Foaming agent is the 2# flotation oil, and the tailing dry ore deposit amount consumption after the corresponding operation flotation is the 5g/ ton.
Added lime in a kind of copper, lead, zinc polymetal ore bulk flotation process pyrite is suppressed, so still the grade of sulfur-bearing is about 5% ~ 12% in the bulk flotation operation mine tailing, this mine tailing pulp density is 30%.Owing to formed alkaline medium condition after in flotation pulp, adding lime, thereby made pyrite surface adsorb hydrophily thing film CaO, the Ca (OH) of calcic
2And CaSO
4, under the highly basic condition, pyrite surface is oxidized simultaneously, and current potential reduces, and the surface generates hydrophilic Fe (OH)
2, make pyrite in alkaline medium, be suppressed.
With carbonic hydroammonium (NH
4HCO
3) add in the flotation operation mine tailing ore pulp of high-alkali high calcium the anion HCO that carbonic hydroammonium is contained
3 -Can form difficulty soluble salt CaCO with the calcium ion in this mine tailing ore pulp
3, make the hydrophilic calcium film Ca (OH) of pyrite surface
2From the pyrite surface desorption, pyrite is exposed generate unsalted surface, recover its natural floatability, realize pyritous active flotation.Simultaneously, the contained ion NH of carbonic hydroammonium
3 +Can with OH
-Effect, the stability of reduction solid phase surface hydrated sheath, the alkalescence of reduction ore pulp also helps FLOTATION OF PYRITE.
Embodiment 1
Carbonic hydroammonium is soluble in water, be mixed with concentration and be 10% ammonium bicarbonate soln; Then in the ratio that adds 1.5 kilograms of carbonic hydroammonium in the mine tailing behind the flotation operation per ton; In the mine tailing behind the ammonium bicarbonate soln adding flotation operation of the corresponding weight of preparing; And add collecting agent and foaming agent simultaneously, and in the JJF-16 flotation device, the mine tailing behind the flotation operation being selected sulphur, the foam that obtains is the sulphur concentrate; Underflow is for selecting mine tailing behind the sulphur, this is selected sulphur after mine tailing send into tailing dam.
Adopt the inventive method to carry out mine tailing and select sulphur to carry out the data contrast that mine tailing selects sulphur with adopting existing method, as shown in table 1.Reclaim ore deposit sulphur
Table 1 the inventive method and existing method mine tailing select the sulphur comparative test result
| Activator | Consumption (Kg/t) | Raw ore sulphur grade (%) | Concentrate sulphur grade (%) | The rate of recovery (%) |
| Copper sulphate | 3 | 13.36 | 43.85 | 87.66 |
| Copper sulphate | 2.5 | 13.02 | 40.7 | 92.92 |
| Carbonic hydroammonium | 1.5 | 12.47 | 40.45 | 94.64 |
Table 1 shows, adopts the inventive method to select the lower raw ore of sulphur sulphur grade, and the sulphur grade of the concentrate that obtains selects the sulphur grade of the concentrate that the higher raw ore of sulphur sulphur grade obtains close with adopting existing method; And the inventive method pyritous rate of recovery when the pyritous rate of recovery is higher than existing method and selects sulphur when selecting sulphur, can make full use of resource, cut the waste, reduce cost; Simultaneously, when the inventive method was selected sulphur, the amount of the amount of used activator used activator of mine tailing ore pulp per ton in the existing method had further reduced cost in the mine tailing ore pulp per ton.
Embodiment 2
Carbonic hydroammonium is soluble in water, be mixed with concentration and be 15% ammonium bicarbonate soln; Then in the ratio that adds 1.5 kilograms of carbonic hydroammonium in the mine tailing behind the flotation operation per ton; In the mine tailing behind the ammonium bicarbonate soln adding flotation operation of the corresponding weight of preparing; And add collecting agent and foaming agent simultaneously, and in the JJF-16 flotation device, the mine tailing behind the flotation operation being selected sulphur, the foam that obtains is the sulphur concentrate; Underflow is for selecting mine tailing behind the sulphur, this is selected sulphur after mine tailing send into tailing dam.
Embodiment 3
Carbonic hydroammonium is soluble in water, be mixed with concentration and be 12.5% ammonium bicarbonate soln; Then in the ratio that adds 1.5 kilograms of carbonic hydroammonium in the mine tailing behind the flotation operation per ton; In the mine tailing behind the ammonium bicarbonate soln adding flotation operation of the corresponding weight of preparing; And add collecting agent and foaming agent simultaneously, and in the JJF-16 flotation device, the mine tailing behind the flotation operation being selected sulphur, the foam that obtains is the sulphur concentrate; Underflow is for selecting mine tailing behind the sulphur, this is selected sulphur after mine tailing send into tailing dam.
Embodiment 4
Carbonic hydroammonium is soluble in water, be mixed with concentration and be 11% ammonium bicarbonate soln; Then in the ratio that adds 1.5 kilograms of ammonium bicarbonate solns in the mine tailing behind the flotation operation per ton; In the mine tailing behind the ammonium bicarbonate soln adding flotation operation of the corresponding weight of preparing; And add collecting agent and foaming agent simultaneously, and in the JJF-16 flotation device, the mine tailing behind the flotation operation being selected sulphur, the foam that obtains is the sulphur concentrate; Underflow is for selecting mine tailing behind the sulphur, this is selected sulphur after mine tailing send into tailing dam.
Embodiment 5
Carbonic hydroammonium is soluble in water, be mixed with concentration and be 14% ammonium bicarbonate soln; Then in the ratio that adds 1.5 kilograms of ammonium bicarbonate solns in the mine tailing behind the flotation operation per ton; In the mine tailing behind the ammonium bicarbonate soln adding flotation operation of the corresponding weight of preparing; And add collecting agent and foaming agent simultaneously, and in the JJF-16 flotation device, the mine tailing behind the flotation operation being selected sulphur, the foam that obtains is the sulphur concentrate; Underflow is for selecting mine tailing behind the sulphur, this is selected sulphur after mine tailing send into tailing dam.
Therefore, select the sulphur operation to add carbonic hydroammonium, can play the effect identical, and carbonic hydroammonium is with low cost, environmental protection with sulfuric acid or copper sulphate as activator at mine tailing.It is both solved environmental protection and safety problem as activator, reduced production cost again.
Claims (4)
1. reclaim pyritous method in a sulfide flotation mine tailing, can fully reclaim pyrite, solved environment and safety problem; And avoided corrosion on Equipment; Reduced production cost, it is characterized in that, this method is specially: at first carbonic hydroammonium and water are mixed with ammonium bicarbonate soln; With in the mine tailing behind this ammonium bicarbonate soln adding flotation operation, add collecting agent and foaming agent simultaneously then, select sulphur.
2. reclaim pyritous method in the sulfide flotation mine tailing as claimed in claim 1, it is characterized in that the concentration of said ammonium bicarbonate soln is 10%～15%.
3. reclaim pyritous method in the sulfide flotation mine tailing as claimed in claim 1, it is characterized in that, add the ammonium bicarbonate soln that contains 1.5 kilograms of carbonic hydroammonium in the mine tailing behind the flotation operation per ton.
4. reclaim pyritous method in the sulfide flotation mine tailing as claimed in claim 1, it is characterized in that, in the JJF-16 flotation device, select sulphur.
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| CN2012101235397A CN102658233A (en) | 2012-04-25 | 2012-04-25 | Method for recovering pyrite from flotation tailings of sulfide ore |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149100A (en) * | 2015-08-07 | 2015-12-16 | 广州有色金属研究院 | Method for recovering barite from lead and zinc tailings |
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| CN101224443A (en) * | 2007-12-28 | 2008-07-23 | 北京矿冶研究总院 | Comprehensive utilization method of iron sulfide minerals |
| CN101623674A (en) * | 2009-08-03 | 2010-01-13 | 北京矿冶研究总院 | Method for floating inhibited iron sulfide minerals |
| CN101693225A (en) * | 2009-09-30 | 2010-04-14 | 北京矿冶研究总院 | Separation method of lead-zinc sulfide minerals |
-
2012
- 2012-04-25 CN CN2012101235397A patent/CN102658233A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101003029A (en) * | 2007-01-18 | 2007-07-25 | 北京矿冶研究总院 | Method for floating inhibited iron sulfide minerals |
| CN101224443A (en) * | 2007-12-28 | 2008-07-23 | 北京矿冶研究总院 | Comprehensive utilization method of iron sulfide minerals |
| CN101623674A (en) * | 2009-08-03 | 2010-01-13 | 北京矿冶研究总院 | Method for floating inhibited iron sulfide minerals |
| CN101693225A (en) * | 2009-09-30 | 2010-04-14 | 北京矿冶研究总院 | Separation method of lead-zinc sulfide minerals |
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| Title |
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| 邓海波: "铅锌尾矿中被石灰强烈抑制的黄铁矿活化浮选回收研究", 《有色金属（选矿部分）》, 28 February 1998 (1998-02-28) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149100A (en) * | 2015-08-07 | 2015-12-16 | 广州有色金属研究院 | Method for recovering barite from lead and zinc tailings |
| CN105149100B (en) * | 2015-08-07 | 2018-01-19 | 广州有色金属研究院 | A kind of method that barite is reclaimed from Pb-Zn tailings |
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Application publication date: 20120912 |