CN104107761A - Method for recycling valuable metals from cyanidation slag containing gold - Google Patents
Method for recycling valuable metals from cyanidation slag containing gold Download PDFInfo
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- CN104107761A CN104107761A CN201410174314.3A CN201410174314A CN104107761A CN 104107761 A CN104107761 A CN 104107761A CN 201410174314 A CN201410174314 A CN 201410174314A CN 104107761 A CN104107761 A CN 104107761A
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Abstract
The invention discloses a method for recycling valuable metals from cyanidation slag containing gold. The method comprises the following steps of (1) adding water in the cyanidation slag containing gold, and performing size mixing treatment on the cyanidation slag containing gold so as to obtain ore pulp; (2) adding powdered carbon and sodium sulphide in the ore pulp; (3) adding collecting agents and foaming agents in the ore pulp obtained from the step (2), and performing roughing treatment on the ore pulp so as to obtain roughing concentrate and tailings; (4) stirring and inflating the roughing concentrate, and performing first cleaning treatment on the roughing concentrate so as to obtain first cleaner tailings and first cleaner concentrate; (5) adding lime and collecting agents in the first cleaner concentrate, and performing second cleaning treatment on the first cleaner concentrate so as to obtain sulfur concentrate and second cleaner concentrate; and (6) adding lime in the second cleaner concentrate, and performing third cleaning treatment on the second cleaner concentrate so as to obtain copper concentrate and third cleaning tailings. By the method for recycling the valuable metals from the cyanidation slag containing gold in an embodiment of the invention, the grade and the recycling rate of the valuable metals can be obviously improved.
Description
Technical field
The invention belongs to metallurgical technology field, particularly, the present invention relates to a kind of from the method containing reclaiming valuable metal golden cyanidation tailings.
Background technology
Processing method for " containing reclaiming valuable metal in golden cyanidation tailings " this class material, mainly contains roasting method, lixiviation process, floatation at present, but the most economic method for floating that still belongs to adopts the method comparatively extensive in industry.Conventional method for floating is from reclaiming valuable metal containing golden cyanidation tailings, generally to add clear water simply to wash, size mixing after cyanidation tailings is pressed to worry, size mixing into certain density ore pulp and carry out flotation recovery valuable metal, because cyanidation tailings contains remaining Cymag, sulfide mineral is had to stronger inhibitory action, the floatability of part mineral greatly reduces, and causes that from cyanidation tailings, to reclaim grade and the rate of recovery of valuable metal on the low side.Meanwhile, adopting this process cyanidation tailings not to be carried out to effective reagent removal processing, make medicament remaining in cyanogen slag still have a strong impact on the recovery of copper sulfur mineral, owing to containing higher cyanogen root, there is the problem that discharge is difficult in waste water.
Therefore, develop that a kind of can to eliminate cyanogen root significant to the method for cyanidation tailings flotation or medicament.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, one object of the present invention is to propose a kind of from the method containing reclaiming valuable metal golden cyanidation tailings, and the method can significantly improve grade and the rate of recovery of valuable metal.
In one aspect of the invention, the present invention proposes a kind of method that reclaims valuable metal from contain golden cyanidation tailings.According to embodiments of the invention, the method comprises:
(1) to described containing adding the water processing of sizing mixing in golden cyanidation tailings, to obtain ore pulp;
(2) in the described ore pulp obtaining to step (1), add powdered carbon and vulcanized sodium, to make at least a portion generation vulcanization reaction of metal oxide in described ore pulp, and make described powdered carbon adsorb the cyanide ion in described ore pulp;
(3) in the described ore pulp obtaining to step (2), add collecting agent and foaming agent to roughly select processing, to obtain roughly selecting concentrate and tailings;
(4) described in step (3) being obtained, roughly select after concentrate stirs inflation and carry out the first selected processing, to obtain the first cleaner tailings and the first selected concentrate, and described the first cleaner tailings is returned described in carrying out and roughly selects processing;
(5) in described the first selected concentrate obtaining to step (4), add lime and collecting agent to carry out the second selected processing, to obtain sulphur concentrate and the second selected concentrate; And
(6) in described the second selected concentrate obtaining to step (5), add lime to carry out the 3rd selected processing, to obtain copper concentrate and the 3rd cleaner tailings, and described the 3rd cleaner tailings is returned and carries out described the second selected processing.
According to the method from containing reclaiming valuable metal golden cyanidation tailings of the embodiment of the present invention, by utilizing powdered carbon to adsorb, contain cyanide ion remaining in golden cyanidation tailings, can eliminate the inhibitory action of cyanide ion to copper sulphur ore, simultaneously by adding vulcanized sodium to vulcanize part oxide ore in sulphide ore, play the activation to copper sulphur ore deposit, thereby effectively reclaim containing gold, copper metal in golden cyanidation tailings.
In addition, according to the above embodiment of the present invention can also have following additional technical characterictic from the method containing reclaiming valuable metal golden cyanidation tailings:
In some embodiments of the invention, the concentration of described ore pulp is 33～34 % by weight.Thus, can significantly improve containing copper and the golden rate of recovery in golden cyanidation tailings.
In some embodiments of the invention, described collecting agent is butyl xanthate, and described foaming agent is 2# oil-terpenic oil.Thus, can further improve containing copper and the golden rate of recovery in golden cyanidation tailings.
In some embodiments of the invention, based on per ton described containing golden cyanidation tailings, in described ore pulp, add the described powdered carbon of 100g and the described vulcanized sodium of 500g, to make at least a portion generation vulcanization reaction of metal oxide in described ore pulp, and make described powdered carbon adsorb the cyanide ion in described ore pulp.Thus, can further improve containing copper and the golden rate of recovery in golden cyanidation tailings.
In some embodiments of the invention, based on per ton described containing golden cyanidation tailings, in described ore pulp, add the described butyl xanthate of 100g and described 2# oil-terpenic oil of 30g, to roughly select processing.Thus, can further improve containing copper and the golden rate of recovery in golden cyanidation tailings.
In some embodiments of the invention, based on per ton described containing golden cyanidation tailings, in described the first selected concentrate, add the described lime of 5g and the described butyl xanthate of 20g, to carry out described the second selected processing.Thus, can further improve containing copper and the golden rate of recovery in golden cyanidation tailings.
In some embodiments of the invention, based on per ton described containing golden cyanidation tailings, in described the second selected concentrate, add the described lime of 2.5g, to carry out described the 3rd selected processing.Thus, can further improve containing copper and the golden rate of recovery in golden cyanidation tailings.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is according to an embodiment of the invention from the method flow schematic diagram containing reclaiming valuable metal golden cyanidation tailings.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In one aspect of the invention, the present invention proposes a kind of method that reclaims valuable metal from contain golden cyanidation tailings.Below with reference to Fig. 1, the method from containing reclaiming valuable metal golden cyanidation tailings of the embodiment of the present invention is described in detail.According to embodiments of the invention, the method comprises:
S100: the processing of sizing mixing
According to embodiments of the invention, to containing adding the water processing of sizing mixing in golden cyanidation tailings, thereby can obtain ore pulp.According to embodiments of the invention, the concentration of ore pulp is also not particularly limited, and according to a particular embodiment of the invention, the concentration of ore pulp can be 33～34 quality %.Inventor's discovery, if pulp density is too low, can cause Cymag consumption large, and cost is high, and pulp density is too high, can cause pulp viscosity to increase, and process of the test is difficult to carry out.
S200: sulfuration and absorption
According to embodiments of the invention, in above-mentioned resulting ore pulp, add powdered carbon and vulcanized sodium, to make at least a portion generation vulcanization reaction of metal oxide in ore pulp, and make the cyanide ion in powdered carbon absorption ore pulp.According to embodiments of the invention, in ore pulp, add the quality of powdered carbon and vulcanized sodium and be not particularly limited, according to a particular embodiment of the invention, based on per ton, containing golden cyanidation tailings, in ore pulp, add the powdered carbon of 100g and the vulcanized sodium of 500g.Particularly, because powdered carbon has stronger suction-operated, can adsorb cyanide ion residual in cyanidation tailings, thereby eliminated the inhibitory action of cyanide ion to copper sulphur ore, simultaneously vulcanized sodium by with ore pulp in partial oxide generation vulcanization reaction, can play to copper sulphur ore the effect of activation, thereby by subsequent treatment, effectively separation obtains valuable metal.
S300: roughly select processing
According to embodiments of the invention, in resulting ore pulp in S200 step, add collecting agent and foaming agent to roughly select processing, thereby can obtain roughly selecting concentrate and rougher tailings.According to embodiments of the invention, the concrete kind of collecting agent and foaming agent is also not particularly limited, and according to a particular embodiment of the invention, collecting agent can be butyl xanthate, and foaming agent can be 2# oil-terpenic oil.According to embodiments of the invention, roughly select in processing procedure, the consumption of butyl xanthate and 2# oil-terpenic oil is also not particularly limited, according to a particular embodiment of the invention, based on per ton, containing golden cyanidation tailings, in ore pulp, add the butyl xanthate of 100g and 2# oil-terpenic oil of 30g.In this step, particularly, collecting agent butyl xanthate can dissociate anion ROCCS in ore pulp
-with cation Na
+, wherein, anion has stronger hydrophobic effect, and it has comprised the solid base of hydrophobic group (nonpolar group) and parent.The hydrophobicity why butyl xanthate anion ROCSS-can strengthen mineral surfaces be because: 1. the solid base of parent is the atomic group with mineral surfaces effect, by it, be adsorbed on the surface of mineral, and have an effect with the cation of mineral surfaces, balance a part of residual bonding force, reduced the hydrophily of mineral surfaces; 2. the hydrophobic group of butyl xanthate anion (nonpolar group) R (C4H9) itself is exactly hydrophobic leading reason; 3. because collecting agent forms hydrophobic membrane after the absorption of mineral surfaces, the distance between hydrone and mineral surfaces is increased, greatly weakened the effect between hydrone and mineral surfaces, thereby strengthened the hydrophobicity of mineral surfaces.So, through the ore particle of collecting agent effect, there is good hydrophobic surface, when colliding, this ore particle and bubble can be attached to securely bubble floating.The mechanism of action of foaming agent is the surface active molecules with hydrophilic radical and hydrophobic grouping, and orientation is adsorbed in water-air interface, reduces the surface tension of the aqueous solution, makes to be filled with air in water and is easy to disperse and becomes bubble and stabilise bubbles.Foaming agent and collecting agent gang are adsorbed in mineral grain surface, make to roughly select concentrate yield and can reach 17.34%, and roughly select in concentrate that copper grade is 1.55%, gold grade is that 2.50g/t, copper recovery are 86.67%, gold recovery is 96.33%; And rougher tailings productive rate can reach 82.66%, wherein copper grade is 0.05%, gold grade is that 0.02g/t, copper recovery are 13.33%, gold recovery is 3.67%.
S400: the first selected processing
According to embodiments of the invention, to obtained above roughly selecting in concentrate, after stirring inflation, carry out the first selected processing, thereby can obtain the first cleaner tailings and the first selected concentrate, and the first cleaner tailings is returned and roughly selects processing.According to embodiments of the invention, the first selected concentrate yield can reach 13.46%, and wherein copper grade is 1.98%, gold grade is that 2.44g/t, copper recovery are 86.05%, gold recovery is 72.87%; And the first cleaner tailings productive rate can reach 3.88%, copper grade is 4.95%, gold grade is that 2.72g/t, copper recovery are 0.62%, gold recovery is 23.46%.
S500: the second selected processing
According to embodiments of the invention, in above-mentioned resulting the first selected concentrate, add lime and collecting agent to carry out the second selected processing, thereby can obtain sulphur concentrate and the second selected concentrate.According to embodiments of the invention, in the second selected processing procedure, the consumption of lime and butyl xanthate is also not particularly limited, and according to a particular embodiment of the invention, based on per ton, containing golden cyanidation tailings, in the first selected concentrate, adds the lime of 5g and the butyl xanthate of 20g.In this step, concrete, the second selected concentrate yield can reach 2.15%, and wherein copper grade is 12.23%, gold grade is that 9.12g/t, copper recovery are 84.84%, gold recovery is 43.57%; And the second cleaner tailings productive rate can reach 11.31%, wherein copper grade is 0.11%, gold grade is that 2.59g/t, copper recovery are 1.21%, gold recovery is 29.30%.
S600: the 3rd selected processing
According to embodiments of the invention, in above-mentioned resulting the second selected concentrate, add lime to carry out the 3rd selected processing, thereby can obtain copper concentrate and the 3rd cleaner tailings, and the 3rd cleaner tailings is returned and carries out the second selected processing.According to embodiments of the invention, the consumption of lime being not particularly limited in the 3rd selected processing procedure, according to a particular embodiment of the invention, based on per ton containing golden cyanidation tailings, to the lime that adds 2.5g in the second selected concentrate.In this step, particularly, the 3rd selected concentrate yield can reach 0.86%, wherein copper grade is 29.80%, gold grade is that 19.51g/t, copper recovery are 82.67%, gold recovery is 37.29%, starve the 3rd cleaner tailings productive rate and can reach 1.29%, wherein copper grade is 1.68%, gold grade is that 2.19g/t, copper recovery are 2.17%, gold recovery is 6.28%.
According to the method from containing reclaiming valuable metal golden cyanidation tailings of the embodiment of the present invention, by utilizing powdered carbon to adsorb, contain cyanide ion remaining in golden cyanidation tailings, can eliminate the inhibitory action of cyanide ion to copper sulphur ore, simultaneously by adding vulcanized sodium to vulcanize part oxide ore in sulphide ore, play the activation to copper sulphur ore deposit, thereby effectively reclaim containing gold, copper metal in golden cyanidation tailings.
As mentioned above, according to the method from containing reclaiming valuable metal golden cyanidation tailings of the embodiment of the present invention, can have and be selected from following advantage one of at least:
According to the embodiment of the present invention from the method containing reclaiming valuable metal golden cyanidation tailings compared with conventional flotation method, the grade of the copper from the copper concentrate containing reclaiming golden cyanidation tailings, gold can improve 5～10 percentage points, and the rate of recovery can improve 5～8 percentage points.
According to a large amount of cyanide ion from pass through employing powdered carbon absorption cyanidation tailings containing the method that reclaims valuable metal golden cyanidation tailings of the embodiment of the present invention, eliminated cyanide ion in flotation backwater, thereby made draining reach discharging standards.
Below with reference to specific embodiment, present invention is described, it should be noted that, these embodiment are only descriptive, and do not limit the present invention in any way.
Embodiment 1
Raw material forms: the Au of 0.45g/t, the S of the Cu of 0.31wt%, 10.34wt% are, the Fe of 44.7wt%.
Method for floating: will add water containing golden cyanidation tailings and size mixing to concentration 33～34wt%, and add powdered carbon, vulcanized sodium in the ore pulp of sizing mixing, and then add butyl xanthate and 2# oil-terpenic oil to roughly select processing, and obtain roughly selecting concentrate and tailings; To obtain roughly select concentrate Aerated stirring after carry out the first selected processing, to obtain the first cleaner tailings and the first selected concentrate, and the first cleaner tailings is returned and roughly selects processing; In the first selected concentrate obtaining, add lime and collecting agent to carry out the second selected processing, to obtain sulphur concentrate and the second selected concentrate; In the second selected concentrate obtaining, add lime to carry out the 3rd selected processing, to obtain copper concentrate and the 3rd cleaner tailings, and the 3rd cleaner tailings is returned and carries out the second selected processing.
Embodiment 2
Raw material forms: the S of the Au of 1.77g/t, the Cu of 1.66wt%, 47.99wt%.
Method for floating: with embodiment 1.
Comparative example 1
Raw material forms: the Au of 0.45g/t, the S of the Cu of 0.31wt%, 10.34wt% are, the Fe of 44.7wt%.
Method for floating: will add water containing golden cyanidation tailings and size mixing to concentration 33～34wt%, and add lime in the ore pulp of sizing mixing, and then add butyl xanthate and 2# oil-terpenic oil to roughly select processing, and obtain roughly selecting concentrate and sulphur concentrate; To roughly selecting in concentrate of obtaining, add lime to carry out selected processing, to obtain cleaner tailings and copper concentrate, and cleaner tailings is returned and roughly selects processing.
Comparative example 2
Raw material forms: the S of the Au of 1.77g/t, the Cu of 1.66wt%, 47.99wt%.
Method for floating: with comparative example 1.
Evaluate:
1, copper, gold grade and copper, gold recovery in resulting copper concentrate, mine tailing and slag in embodiment 1-2 and comparative example 1-2 are evaluated.
2, evaluation index and method of testing:
Copper grade evaluation method: atomic absorption spectrophotometry
Gold grade evaluation method: atomic absorption spectrophotometry
Test result is as shown in table 1-2.
Table 1 floatation indicators
Table 2 floatation indicators
Conclusion: from table 1,2 data, embodiment 1 forms identical with comparative example 1 raw material, embodiment 2 forms identical with comparative example 2 raw materials, embodiment 1 and embodiment 2 are before roughly selecting processing by ore pulp, add powdered carbon and vulcanized sodium, and comparative example 1 and comparative example 2 are directly roughly selected processing by ore pulp.
Contrast knownly, in embodiment 1, in gained tailings, copper concentrate and mine tailing, copper and gold grade are in comparative example 1, and copper and the golden rate of recovery are also apparently higher than comparative example 1; In embodiment 2, in gained tailings, copper concentrate and mine tailing, copper and gold grade are also in comparative example 2, and copper and the golden rate of recovery are apparently higher than comparative example 2.In flotation system, before roughly selecting processing, add appropriate powdered carbon and vulcanized sodium, can substantially eliminate the inhibitory action of cyanogen root to copper sulphur ore, in activation sulphide ore, the effect of part oxide ore is obvious; Not only copper grade, gold grade are improved, and the rate of recovery is also improved, and for enterprise creates good economic benefit,, to improving the comprehensive utilization of resource, develop a circular economy significant meanwhile, have good application value.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.
Claims (7)
1. from the method containing reclaiming valuable metal golden cyanidation tailings, it is characterized in that, comprising:
(1) to described containing adding the water processing of sizing mixing in golden cyanidation tailings, to obtain ore pulp;
(2) in the described ore pulp obtaining to step (1), add powdered carbon and vulcanized sodium, to make at least a portion generation vulcanization reaction of metal oxide in described ore pulp, and make described powdered carbon adsorb the cyanide ion in described ore pulp;
(3) in the described ore pulp obtaining to step (2), add collecting agent and foaming agent to roughly select processing, to obtain roughly selecting concentrate and tailings;
(4) described in step (3) being obtained, roughly select after concentrate stirs inflation and carry out the first selected processing, to obtain the first cleaner tailings and the first selected concentrate, and described the first cleaner tailings is returned described in carrying out and roughly selects processing;
(5) in described the first selected concentrate obtaining to step (4), add lime and collecting agent to carry out the second selected processing, to obtain sulphur concentrate and the second selected concentrate; And
(6) in described the second selected concentrate obtaining to step (5), add lime to carry out the 3rd selected processing, to obtain copper concentrate and the 3rd cleaner tailings, and described the 3rd cleaner tailings is returned and carries out described the second selected processing.
2. the method that reclaims valuable metal from contain golden cyanidation tailings according to claim 1, is characterized in that, the concentration of described ore pulp is 33～34 % by weight.
3. the method that reclaims valuable metal from contain golden cyanidation tailings according to claim 1, is characterized in that, described collecting agent is butyl xanthate, and described foaming agent is 2# oil-terpenic oil.
4. according to claim 3 from the method containing reclaiming valuable metal golden cyanidation tailings, it is characterized in that, based on per ton described containing golden cyanidation tailings, in described ore pulp, add the described powdered carbon of 100g and the described vulcanized sodium of 500g, to make at least a portion generation vulcanization reaction of metal oxide in described ore pulp, and make described powdered carbon adsorb the cyanide ion in described ore pulp.
5. according to claim 3 from the method containing reclaiming valuable metal golden cyanidation tailings, it is characterized in that, based on per ton described containing golden cyanidation tailings, in described ore pulp, add the described butyl xanthate of 100g and described 2# oil-terpenic oil of 30g, to roughly select processing.
6. according to claim 3 from the method containing reclaiming valuable metal golden cyanidation tailings, it is characterized in that, based on per ton described containing golden cyanidation tailings, in described the first selected concentrate, add the described lime of 5g and the described butyl xanthate of 20g, to carry out described the second selected processing.
7. the method that reclaims valuable metal from contain golden cyanidation tailings according to claim 3, is characterized in that, based on per ton described containing golden cyanidation tailings, adds the described lime of 2.5g, to carry out described the 3rd selected processing in described the second selected concentrate.
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| CN104550205A (en) * | 2015-01-19 | 2015-04-29 | 福建省双旗山矿业有限责任公司 | Clean conversion and comprehensive utilization method for cyanided tailings |
| CN109604049A (en) * | 2018-12-17 | 2019-04-12 | 招金矿业股份有限公司 | A method of for recycling copper mineral in refined gold ore cyaniding tailings |
| CN109632976A (en) * | 2018-12-29 | 2019-04-16 | 紫金矿业集团股份有限公司 | Golden diagnostic method in gold mine pressure pre-oxidation cyanide residue |
| CN111940148A (en) * | 2020-07-27 | 2020-11-17 | 莱州市鸿铖矿业环保开发有限公司 | Comprehensive utilization and harmless treatment method for cyanidation tailings |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104550205A (en) * | 2015-01-19 | 2015-04-29 | 福建省双旗山矿业有限责任公司 | Clean conversion and comprehensive utilization method for cyanided tailings |
| CN109604049A (en) * | 2018-12-17 | 2019-04-12 | 招金矿业股份有限公司 | A method of for recycling copper mineral in refined gold ore cyaniding tailings |
| CN109632976A (en) * | 2018-12-29 | 2019-04-16 | 紫金矿业集团股份有限公司 | Golden diagnostic method in gold mine pressure pre-oxidation cyanide residue |
| CN109632976B (en) * | 2018-12-29 | 2021-08-24 | 紫金矿业集团股份有限公司 | Diagnosis method for gold in gold ore pressurized pre-oxidation cyanide slag |
| CN111940148A (en) * | 2020-07-27 | 2020-11-17 | 莱州市鸿铖矿业环保开发有限公司 | Comprehensive utilization and harmless treatment method for cyanidation tailings |
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