CN119076200A - A step-by-step enhanced recovery method for recovering multiple complex copper ores - Google Patents
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Abstract
The invention discloses a step-by-step reinforced recovery method for recovering multiple complex copper ores, which comprises the steps of grinding a sample to a proper granularity, adopting amyl xanthate to directly float copper sulfide, desliming tailings of the copper sulfide, adopting sodium sulfide to activate after desliming, adopting a collector amyl xanthate and butylammonium black drug to float free copper oxide, adopting ethylenediamine phosphate to reinforce and activate, then adding sodium sulfide and the collector amyl xanthate and butylammonium black drug to float combined copper oxide, and finally adopting high-gradient strong magnetic separation to recover weak magnetic combined copper oxide which is difficult to float and is adsorbed or is mixed with minerals such as iron, manganese, cobalt and the like in fine particles. The total copper recovery rate of the invention can reach more than 85 percent, which is more than ten percent higher than the average beneficiation recovery rate of the world copper oxide ore, and the invention can better solve the technical problem of low single process recovery rate of the existing copper oxide ore.
Description
Technical Field
The invention relates to the technical field of mineral separation, in particular to a step-by-step reinforced recovery method for recovering multiple complex copper ores.
Background
Copper oxide is mainly obtained by long-time oxidation reaction accumulation of copper sulfide ore beds, and copper oxide ores generally comprise blue/chalcocite, malachite, silica peacock, cuprite, other combined copper oxide and the like. Copper oxide ores are very complex in nature, large in slime content, and large in copper mineral variety, and each copper mineral is large in floatability difference. Copper oxide has strong surface hydrophilicity, high oxidation rate and binding rate, and useful minerals are often adsorbed or fine particles are mixed with minerals such as iron, manganese, cobalt and the like, so that the difficulty of copper oxide ore flotation is increased to a certain extent, and the problem of low recycling rate always exists. In order to comprehensively utilize the complex copper oxide ore resources, ore dressing workers develop a plurality of ore dressing ways, and common ore dressing methods comprise direct flotation, sulfuration flotation+acid leaching, acid leaching, segregation and dressing and smelting combined treatment methods. The best treatment processes of the copper oxide ores with different properties are different, but the existing copper oxide ore dressing process is generally mainly researched for one or two copper ores, and the comprehensive recovery and utilization processes for a plurality of copper ores are less, so that the aim of comprehensively recovering a plurality of copper ores is difficult to achieve. Therefore, aiming at the mineral separation characteristics of different copper oxide ores, the test development is necessary to strengthen the efficient step-by-step recovery of various copper ores one by one, and the method has very important significance for improving the comprehensive recovery rate of a plurality of complex copper oxide ores.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a step-by-step reinforced recovery method for recovering a plurality of complex copper ores.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A step-by-step reinforced recovery method for recovering a plurality of complex copper ores comprises the following steps:
A. Copper sulfide flotation, namely adding a collector amyl xanthate and a foaming agent 2# oil into ore pulp ground to the target granularity after grinding raw ore, carrying out copper sulfide roughing, wherein roughing tailings obtained by copper sulfide roughing enter copper sulfide scavenging operation, roughing concentrate obtained by copper sulfide roughing enter copper sulfide concentrating operation;
B. desliming, namely desliming the scavenger tailings obtained in the step A by a cyclone, and treating the desliming ore sand in the step C;
C. C, free copper oxide flotation, namely dispersing ore sand obtained in the step B by adopting a dispersing agent sodium fluosilicate, activating sodium sulfide, adding amyl xanthate, butylammonium black powder and No.2 oil, then performing free copper oxide roughing operation, performing free copper oxide concentration operation on roughing concentrate obtained by free copper oxide roughing, performing free copper oxide scavenging operation on roughing tailings obtained by free copper oxide roughing, and performing treatment in the step D on the concentrate obtained by free copper oxide concentration;
D. The scavenging tailings obtained finally through free copper oxide scavenging are subjected to enhanced activation by adopting ethylenediamine phosphate, sodium sulfide, amyl xanthate, butylammonium black powder and No. 2 oil are added for carrying out rough scavenging of combined copper oxide, rough concentrate obtained through rough scavenging of combined copper oxide enters a combined copper oxide concentration operation, rough tailings obtained through rough scavenging of combined copper oxide enter a combined copper oxide scavenging operation;
E. and magnetically combining copper oxide strong magnetic separation, namely performing high-gradient strong magnetic separation on the scavenging tailings obtained finally by combining copper oxide scavenging to obtain copper oxide concentrate III and final tailings.
In the step A, copper sulfide roughing, copper sulfide scavenging and four copper sulfide concentration are carried out once, the concentration tailings obtained in the first-stage copper sulfide concentration are returned to copper sulfide roughing, the concentration tailings obtained in the copper sulfide concentration of the other stages are sequentially returned to the previous-stage copper sulfide concentration operation, the concentration concentrate obtained in each stage of copper sulfide concentration is fed to the next-stage copper sulfide concentration operation, and the copper sulfide concentration concentrate obtained in the last-stage copper sulfide concentration is the high-grade copper sulfide concentrate.
In the step A, according to the weight of dry ore of each ton of crude ore, 40g/t of collecting agent amyl xanthate and 30g/t of foaming agent No.2 oil are added in copper sulfide roughing, and 20g/t of amyl xanthate is added in copper sulfide scavenging.
In the step C, free copper oxide roughing, free copper oxide scavenging and free copper oxide scavenging are carried out once, tailings obtained by free copper oxide scavenging are sequentially returned to free copper oxide roughing operation, scavenged ores obtained by first-stage free copper oxide scavenging are sequentially returned to free copper oxide roughing operation, scavenged ores obtained by second-stage free copper oxide scavenging are sequentially returned to first-stage free copper oxide scavenging operation, scavenged tailings obtained by first-stage free copper oxide scavenging enter second-stage free copper oxide scavenging operation, and scavenged tailings obtained by second-stage free copper oxide scavenging enter the treatment of the step D.
And (C) before the sodium sulfide is adopted for activation, adding a dispersing agent sodium fluosilicate into the ore sand obtained in the step (B), and adding sodium sulfide, amyl xanthate and butylammonium black drug into the free copper oxide selection and free copper oxide scavenging.
Further, in the step C, 300g/t of dispersing agent sodium fluosilicate and 2400g/t of sodium sulfide are added into ore sand according to the dry ore weight of each ton of crude ore, 160g/t of collecting agent amyl xanthate, 40g/t of butyl ammonium black and 30g/t of foaming agent No. 2 oil are added into free copper oxide roughing, 100g/t of sodium sulfide, 10g/t of amyl xanthate and 4g/t of butyl ammonium black are added into free copper oxide cleaning, the dosage of the first-stage free copper oxide cleaning agent is 800g/t of sodium sulfide, 80g/t of amyl xanthate and 20g/t of butyl ammonium black, and the dosage of the second-stage free copper oxide cleaning agent is 300g/t of sodium sulfide, 20g/t of amyl xanthate and 10g/t of butyl ammonium black.
Further, in the step D, primary combined copper oxide roughing, secondary combined copper oxide scavenging and secondary combined copper oxide scavenging are carried out, the tailings obtained by first-stage combined copper oxide scavenging are sequentially returned to the combined copper oxide roughing operation, the tailings obtained by second-stage combined copper oxide scavenging are sequentially returned to the first-stage combined copper oxide scavenging operation, concentrate obtained by first-stage combined copper oxide scavenging is sequentially returned to the combined copper oxide roughing operation, the tailings obtained by second-stage combined copper oxide scavenging are sequentially returned to the first-stage combined copper oxide scavenging operation, and the tailings obtained by first-stage combined copper oxide scavenging are sequentially returned to the second-stage combined copper oxide scavenging operation, and tailings obtained by second-stage combined copper oxide scavenging are processed in the step E.
In the step D, according to the dry ore weight of each ton of crude ore, the scavenging tailings obtained by scavenging free copper oxide are firstly activated by adopting 200g/t of ethylenediamine phosphate and 400g/t of sodium sulfide, the collecting agents of 30g/t of amyl xanthate, 10g/t of butyl ammonium black and 10g/t of No. 2 oil are added in the scavenging process of the combined copper oxide, the dosage of the agents selected by the first-stage combined copper oxide is 100g/t of sodium sulfide, 10g/t of amyl xanthate and 5g/t of butyl ammonium black, the dosage of the agents selected by the second-stage combined copper oxide is 100g/t of sodium sulfide, 10g/t of amyl xanthate and 4g/t of butyl ammonium black, the dosage of the agents selected by the first-stage combined copper oxide scavenging is 300g/t of sodium sulfide, 20g/t of amyl xanthate and 10g/t of butyl ammonium black, and the dosage of the agents selected by the second-stage combined copper oxide is 200g/t of sodium sulfide, 20g/t of amyl xanthate and 10g/t of butyl ammonium black.
The method has the advantages that aiming at the difference of the properties of different copper minerals, the method mainly adopts a step flotation process for copper sulfide and different copper oxide ores, the inhibition effect of sodium sulfide on copper sulfide can be reduced, meanwhile, high-grade copper sulfide concentrate is obtained, free copper oxide is directly subjected to activation flotation by adopting a sodium sulfide and combined collector to obtain high-grade copper oxide concentrate I, the combined copper oxide difficult to be subjected to activation flotation is subjected to reinforcement activation by adopting ethylenediamine phosphate and then can be subjected to flotation recovery by adopting the sodium sulfide and combined collector, and weak magnetic combined copper oxide of minerals such as iron, manganese, cobalt and the like which are adsorbed or mixed with fine particles is subjected to strong magnetic separation recovery. The method of the invention aims at the step-by-step reinforced separation of the copper ores containing various copper ore species by adopting different processes, thereby achieving the purpose of efficiently and comprehensively recovering different copper ores and forming a mineral separation innovative process for treating the type of refractory copper oxide ores. The total copper recovery rate of the invention can reach more than 85 percent, which is more than ten percent higher than the average beneficiation recovery rate of the world copper oxide ore, and the invention can better solve the technical problem of low single process recovery rate of the existing copper oxide ore.
Drawings
Fig. 1 is a process flow diagram of examples 1 and 2 of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that, while the present embodiment provides a detailed implementation and a specific operation process on the premise of the present technical solution, the protection scope of the present invention is not limited to the present embodiment.
Example 1
Some raw ore is copper oxide ore, copper content is 6.05%, sulfur is 0.18%. The main gangue is quartz (68.11%), and the secondary gangue is calcite, dolomite, apatite, etc. Copper ores are more classified, and mainly comprise copper oxide minerals such as malachite (6.5%), silphite (3.9%), pseudomalachite (0.05%) and copper sulfide (0.96%). Cu is mainly deposited in malachite, and then deposited in silica peacock and copper sulfide, and partially dispersed in other minerals (manganese-cobalt-containing copper silicate ore, limonite, pyrolte, etc.).
The embodiment provides a step-by-step reinforced recovery method for recovering a plurality of complex copper ores, as shown in fig. 1, comprising the following steps:
A. Copper sulfide flotation, namely grinding raw ore according to the dry ore weight of each ton of raw ore, adding 40g/t of collecting agent amyl xanthate and 30g/t of foaming agent No. 2 oil into ore pulp which is ground to be-74 mu m and accounts for 65% of fineness, carrying out primary copper sulfide roughing, concentrating the obtained copper sulfide roughing concentrate for 4 times, returning the concentrate tailings obtained in the first stage of copper sulfide concentration to copper sulfide roughing, returning the concentrate tailings obtained in the other stages of copper sulfide concentration to the previous stage of copper sulfide concentration operation in sequence, enabling the concentrate obtained in each stage of copper sulfide concentration to enter the next stage of copper sulfide concentration operation, and obtaining copper sulfide concentrate obtained in the last stage of copper sulfide concentration to be high-grade copper sulfide concentrate. Adding 20g/t amyl xanthate into copper sulfide roughing tailings for primary copper sulfide scavenging, returning copper sulfide roughing from copper sulfide scavenging ore, and desliming the copper sulfide scavenging tailings;
B. desliming, namely desliming copper sulfide scavenging tailings by a cyclone, and allowing ore sand to enter free copper oxide flotation;
C. And C, free copper oxide flotation, namely dispersing ore slurry by adopting 300g/t of dispersing agent sodium fluosilicate, activating by adopting 2400g/t of sodium sulfide, adding 160g/t of combined collector amyl xanthate and 40g/t of butylammonium black powder, adding 30g/t of foaming agent 2# oil, performing primary free copper oxide roughing to obtain free copper oxide roughing concentrate, adding 100g/t of sodium sulfide into the free copper oxide roughing concentrate, and performing primary free copper oxide concentration after adding 10g/t of combined collector amyl xanthate and 4g/t of butylammonium black powder to obtain high-grade copper oxide concentrate 1. The free copper oxide roughing tailings are subjected to two-time free copper oxide scavenging, the dosage of the first-stage free copper oxide scavenging agent is 800g/t of sodium sulfide, 80g/t of combined collector amyl xanthate and 20g/t of butylammonium black powder, the dosage of the second-stage free copper oxide scavenging agent is 300g/t of sodium sulfide, 20g/t of combined collector amyl xanthate and 10g/t of butylammonium black powder, the first-stage free copper oxide scavenging ore sequentially returns to the free copper oxide roughing operation, the second-stage free copper oxide scavenging ore sequentially returns to the first-stage free copper oxide scavenging operation, each-stage free copper oxide scavenging tailings enter the next-stage free copper oxide scavenging operation, and the second-stage free copper oxide scavenging tailings enter the combined copper oxide floatation operation.
D. The free copper oxide scavenging tailings are subjected to enhanced activation by adopting 200g/t of ethylenediamine phosphate, then 400g/t of sodium sulfide, 30g/t of combined collector amyl xanthate and 10g/t of butylammonium black powder and 10g/t of foaming agent 2# oil are added, primary copper oxide rough concentration is carried out to obtain copper oxide rough concentration concentrate, secondary copper oxide rough concentration is carried out on the copper oxide rough concentration concentrate, the dosage of the first-stage copper oxide concentration agent is 100g/t of sodium sulfide, 10g/t of combined collector amyl xanthate and 5g/t of butylammonium black powder, the dosage of the second-stage copper oxide concentration agent is 100g/t of sodium sulfide, 10g/t of combined collector amyl xanthate and 4g/t of butylammonium black powder, the first-stage copper oxide concentration tailings sequentially return to the copper oxide rough concentration operation, the second-stage copper oxide concentration tailings sequentially return to the first-stage copper oxide concentration operation, the copper oxide concentrate of each stage enters the next-stage copper oxide concentration operation, and the final-stage copper oxide concentration concentrate is the low-grade copper oxide concentrate. The method comprises the steps of carrying out twice scavenging of combined copper oxide by combining copper oxide rough tailings, wherein the dosage of a reagent for scavenging of the first-stage combined copper oxide is 300g/t of sodium sulfide, 20g/t of a combined collector amyl xanthate and 10g/t of a butylammonium black drug, the dosage of a reagent for scavenging of the second-stage combined copper oxide is 200g/t of sodium sulfide, 20g/t of a combined collector amyl xanthate and 10g/t of a butylammonium black drug, the scavenged ores for scavenging of the first-stage combined copper oxide return to the operation of scavenging of the combined copper oxide in sequence, the scavenged ores for scavenging of the second-stage combined copper oxide return to the operation of scavenging of the first-stage combined copper oxide in sequence, each stage of scavenged tailings for scavenging of the combined copper oxide enters the next-stage combined copper oxide scavenging operation, and the scavenged tailings for scavenging of the last-stage combined copper oxide scavenging enter magnetic combined copper oxide high-intensity magnetic separation.
E. and D, carrying out strong magnetic separation on the magnetic combined copper oxide, namely recycling weak magnetic combined copper oxide by adopting secondary strong magnetic separation with the magnetic field strength of 1.75T for the scavenging tailings subjected to scavenging of the last-stage combined copper oxide in the step D, and obtaining copper oxide concentrate 3 and final tailings.
Example 2
Some raw ore is copper oxide ore, copper content is 5.40%, sulfur is 0.16%. The main gangue is quartz (77.36%), and the secondary is dolomite, calcite, muscovite and the like. Copper ores are more classified, and mainly comprise copper oxide minerals such as malachite (5.73%), silphite (3.51%), pseudomalachite (0.06%) and copper sulfide (0.86%). Cu is mainly deposited in malachite, secondly deposited in beggar's nest and copper sulfide, and is partially dispersed in manganese cobalt copper silicate mineral.
In this example, the raw ore was treated in the same manner as in example 1.
Comparative example 1
Some raw ore is copper oxide ore, copper content is 4.79%, and sulfur content is 0.14%. The main gangue is quartz (75.90%), and the second is muscovite, chlorite, dolomite, etc. Copper ores are more in species, and mainly comprise copper oxide minerals such as malachite (5.15%), silphite (3.11%), pseudomalachite (0.04%) and copper sulfide (0.77%). Cu is mainly deposited in malachite, and secondly deposited in silica peacock and copper sulfide, and partially dispersed in other silicate minerals.
In the comparative example, copper sulfide ore is selected in advance from the raw ore, sodium sulfide is adopted for activation after desliming, and then amyl xanthate is adopted for floatation of copper oxide.
The results of the implementation of example 1, example 2 and comparative example 1 are shown in table 1.
As shown in the results of example 1 and example 2 in Table 1, the copper grade of the raw ore in example 1 was 6.05%, and a high-grade copper sulfide concentrate having a yield of 1.19%, a copper grade of 58.50% and a copper recovery rate of 11.51%, a high-grade copper oxide concentrate 1 having a yield of 10.63%, a copper grade of 28.74% and a copper recovery rate of 50.53%, a low-grade copper oxide concentrate 2 having a yield of 6.55%, a copper grade of 17.56% and a copper recovery rate of 19.02%, and a low-grade copper oxide concentrate 3 having a yield of 3.32%, a copper grade of 7.62% and a copper recovery rate of 4.18% were obtained. The comprehensive recovery rate of copper reaches 85.25 percent.
In example 2, a high-grade copper sulfide concentrate having a yield of 1.09%, a copper grade of 59.88% and a copper recovery rate of 12.08%, a high-grade copper oxide concentrate 1 having a yield of 9.89%, a copper grade of 27.74% and a copper recovery rate of 50.76%, a low-grade copper oxide concentrate 2 having a yield of 5.82%, a copper grade of 16.71% and a copper recovery rate of 17.99%, and a low-grade copper oxide concentrate 3 having a yield of 3.41%, a copper grade of 7.11% and a copper recovery rate of 4.49% were obtained. The comprehensive recovery rate of copper reaches 85.32 percent.
In comparative example 1, a high-grade copper sulfide concentrate having a yield of 0.89%, a copper grade of 57.88% and a copper recovery of 10.76%, and a copper oxide concentrate having a yield of 11.43%, a copper grade of 26.04% and a copper recovery of 62.14% were obtained. The comprehensive recovery rate of copper reaches 72.90 percent. The process of comparative example 1 is directed to copper oxide activated by sodium sulfide and then floated, and is mainly directed to the process in which malachite has a flotation recovery effect, wherein copper in silicon malachite and copper-containing silicate minerals is difficult to activate, float and recover, and is lost in tailings. Eventually resulting in low recovery.
Various modifications and variations of the present invention will be apparent to those skilled in the art in light of the foregoing teachings and are intended to be included within the scope of the following claims.
Claims (8)
1. A step-by-step reinforced recovery method for recovering a plurality of complex copper ores is characterized by comprising the following steps:
A. Copper sulfide flotation, namely adding a collector amyl xanthate and a foaming agent 2# oil into ore pulp ground to the target granularity after grinding raw ore, carrying out copper sulfide roughing, wherein roughing tailings obtained by copper sulfide roughing enter copper sulfide scavenging operation, roughing concentrate obtained by copper sulfide roughing enter copper sulfide concentrating operation;
B. desliming, namely desliming the scavenger tailings obtained in the step A by a cyclone, and treating the desliming ore sand in the step C;
C. C, free copper oxide flotation, namely activating ore sand obtained in the step B by sodium sulfide, adding amyl xanthate, butylammonium black powder and No. 2 oil, then performing free copper oxide roughing operation, performing free copper oxide concentration operation on roughing concentrate obtained by free copper oxide roughing, performing free copper oxide scavenging operation on roughing tailings obtained by free copper oxide roughing, wherein the concentrate obtained finally by free copper oxide concentration is copper oxide concentrate I, and performing treatment on scavenging tailings obtained finally by free copper oxide scavenging in the step D;
D. The scavenging tailings obtained finally through free copper oxide scavenging are subjected to enhanced activation by adopting ethylenediamine phosphate, sodium sulfide, amyl xanthate, butylammonium black powder and No. 2 oil are added for carrying out rough scavenging of combined copper oxide, rough concentrate obtained through rough scavenging of combined copper oxide enters a combined copper oxide concentration operation, rough tailings obtained through rough scavenging of combined copper oxide enter a combined copper oxide scavenging operation;
E. and magnetically combining copper oxide strong magnetic separation, namely performing high-gradient strong magnetic separation on the scavenging tailings obtained finally by combining copper oxide scavenging to obtain copper oxide concentrate III and final tailings.
2. The method of claim 1, wherein in step A, one copper sulfide roughing, one copper sulfide scavenging and four copper sulfide beneficiation are performed, the tailings obtained in the first stage copper sulfide beneficiation are returned to the copper sulfide roughing, the tailings obtained in the other stages of copper sulfide beneficiation are sequentially returned to the previous stage copper sulfide beneficiation operation, the concentrate obtained in each stage of copper sulfide beneficiation is fed to the next stage copper sulfide beneficiation operation, and the concentrate obtained in the last stage copper sulfide beneficiation is the copper sulfide concentrate.
3. The method according to claim 1 or 2, wherein in the step A, 40g/t of the amyl xanthate as a collecting agent and 30g/t of the No. 2 oil as a foaming agent are added in the roughing of copper sulfide, and 20g/t of the amyl xanthate is added in the scavenging of copper sulfide, based on the weight of dry ore of each ton of raw ore.
4. The method according to claim 1, wherein in the step C, free copper oxide roughing, free copper oxide scavenging and free copper oxide scavenging are performed once, tailings obtained by free copper oxide scavenging are sequentially returned to the free copper oxide roughing operation, scavenged ores obtained by first-stage free copper oxide scavenging are sequentially returned to the free copper oxide roughing operation, scavenged ores obtained by second-stage free copper oxide scavenging are sequentially returned to the first-stage free copper oxide scavenging operation, scavenged tailings obtained by first-stage free copper oxide scavenging are subjected to the second-stage free copper oxide scavenging operation, and scavenged tailings obtained by second-stage free copper oxide scavenging are subjected to the treatment of the step D.
5. The method according to claim 1 or 4, wherein in the step C, before the activation by sodium sulfide, a dispersing agent sodium fluosilicate is added into the ore sand obtained in the step B, and sodium sulfide, amyl xanthate and butylammonium black drug are added into the free copper oxide refining and free copper oxide scavenging processes.
6. The method according to claim 5, wherein in the step C, 300g/t of dispersing agent sodium fluosilicate and 2400g/t of sodium sulfide are added into ore sand according to the dry ore weight of each ton of crude ore, 160g/t of collecting agent amyl xanthate, 40g/t of butyl ammonium black and 30g/t of foaming agent 2# oil are added into free copper oxide roughing, 100g/t of sodium sulfide, 10g/t of amyl xanthate and 4g/t of butyl ammonium black are added into free copper oxide cleaning, the dosage of the first-stage free copper oxide scavenging agent is 800g/t of sodium sulfide, 80g/t of amyl xanthate and 20g/t of butyl ammonium black, and the dosage of the second-stage free copper oxide scavenging agent is 300g/t of sodium sulfide, 20g/t of amyl xanthate and 10g/t of butyl ammonium black.
7. The method according to claim 1, wherein in the step D, one-time combined copper oxide roughing, two-time combined copper oxide scavenging and two-time combined copper oxide scavenging are carried out, the tailings obtained by first-stage combined copper oxide scavenging are sequentially returned to the combined copper oxide roughing operation, the tailings obtained by second-stage combined copper oxide scavenging are sequentially returned to the first-stage combined copper oxide scavenging operation, the concentrate obtained by first-stage combined copper oxide scavenging is carried into the second-stage combined copper oxide scavenging operation, the tailings obtained by first-stage combined copper oxide scavenging are sequentially returned to the combined copper oxide scavenging operation, the tailings obtained by first-stage combined copper oxide scavenging are carried into the second-stage combined copper oxide scavenging operation, and the tailings obtained by second-stage combined copper oxide scavenging are carried into the treatment of the step E.
8. The method of claim 7, wherein in the step D, according to the dry ore weight of each ton of raw ore, the scavenging tailings obtained by scavenging free copper oxide are firstly activated by adopting 200g/t of ethylenediamine phosphate and 400g/t of sodium sulfide, the collecting agents of 30g/t of amyl xanthate, 10g/t of butylammonium black drug and 10g/t of No. 2 oil are added in the coarse copper sulfide, the dosage of the agents selected by the first-stage copper oxide is 100g/t of sodium sulfide, 10g/t of amyl xanthate and 5g/t of butylammonium black drug, the dosage of the agents selected by the second-stage copper oxide is 100g/t of sodium sulfide, 10g/t of amyl xanthate and 4g/t of butylammonium black drug, the dosage of the agents selected by scavenging the first-stage copper oxide is 300g/t of sodium sulfide, 20g/t of amyl xanthate and 10g/t of butylammonium black drug, and the dosage of the agents selected by the second-stage copper oxide is 200g/t of sodium sulfide, 20g/t of amyl xanthate and 10g/t of butylammonium black drug.
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| CN106824545A (en) * | 2017-02-17 | 2017-06-13 | 湖南有色金属研究院 | A kind of method that amino acid promotes cupric oxide ore sulfide flotation |
| CN107486338A (en) * | 2017-08-30 | 2017-12-19 | 厦门紫金矿冶技术有限公司 | A kind of floatation process of high efficiente callback complex copper oxide ore |
| CN110681477A (en) * | 2018-07-06 | 2020-01-14 | 厦门紫金矿冶技术有限公司 | Dressing and smelting combined treatment method for recovering complex copper oxide ore |
| CN111790517A (en) * | 2020-06-02 | 2020-10-20 | 中国恩菲工程技术有限公司 | Method for sorting copper oxide and copper sulfide mixed ore |
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