Copper-molybdenum collecting agent and preparation method and application thereof

Abstract

The invention discloses a copper and molybdenum collecting agent as well as a preparation method and application thereof. The copper and molybdenum collecting agent is prepared from sodium diphenyl dithiocarbamate, sodium butyl dithiocarbamate, 4-amino-1-naphthalene sulfonic acid, sodium diethyl dithiophosphate, lauryl mercaptan and sodium dimethyl butyl xanthate. By means of the copper-molybdenum collecting agent, the copper grade can be improved by 0.5%-2%, the molybdenum grade can be improved by 1%-2%, the copper recovery rate can be improved by 0.5%-1%, and the molybdenum recovery rate can be improved by 1%-2% or above.

Description

Technical Field

[0001] The invention belongs to the technical field of mineral processing, and specifically relates to a copper-molybdenum collector and a preparation method and application thereof. Background Art

[0002] my country has huge reserves of copper-molybdenum ore. However, the current situation of copper-molybdenum resources is that the occurrence state of copper-molybdenum resources is complex, the embedded particle size is fine, the utilization rate of low-grade co-existing copper-molybdenum resources is low, and the recovery of useful minerals is difficult, which seriously affects the efficient utilization of resources. And the existing reagents cannot meet the changes in the properties of the current ore. Therefore, in view of the ever-changing properties of the ore, efficient copper-molybdenum collectors are crucial to the development and utilization of copper-molybdenum resources. Further in-depth research on key technologies for efficient recovery of high-mud-content low-grade co-existing copper-molybdenum resources and the development of more advantageous new collectors are of great significance to the promotion of the copper-molybdenum metal industry. Therefore, in order to improve the flotation efficiency of high-mud-content low-grade copper-molybdenum ores, it is urgent to develop a new type of efficient collector to achieve efficient recovery and utilization of copper-molybdenum ores. Summary of the invention

[0003] The first purpose of the present invention is to provide a copper-molybdenum collector; the second purpose is to provide a method for preparing the copper-molybdenum collector; and the third purpose is to provide an application of the copper-molybdenum collector.

[0004] The first object of the present invention is achieved in that the copper-molybdenum collector is composed of sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate.

[0005] The second object of the present invention is achieved by mixing sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate in a formula ratio to prepare the product.

[0006] The third object of the present invention is achieved by using the copper-molybdenum collector in the efficient flotation process of high-mud-containing low-grade copper-molybdenum ore; including pretreatment, roughing, cleaning and scavenging steps, specifically including: A. Pretreatment: Grind the raw material high-mud-content low-grade copper-molybdenum ore to -200 mesh accounting for more than 60%, and adjust the slurry to a slurry mass percentage concentration of 30-40% to obtain material a; B. Roughing: lime, copper-molybdenum collector and pine oil are sequentially added to material a for flotation to obtain copper-molybdenum mixed roughing concentrate b and copper-molybdenum mixed roughing tailings c; C. Selected: 1) copper-molybdenum collector and pine oil are sequentially added to the copper-molybdenum mixed rougher concentrate b to perform concentration I to obtain concentrated I concentrate d and concentrated I tailings e, and the concentrated I tailings e are returned to the pre-treatment step; 2) Adding copper-molybdenum collector and pine oil to the concentrated ore d in turn to perform concentrated ore Ⅱ to obtain concentrated ore Ⅱ f and concentrated ore Ⅱ tailings g, and the concentrated ore Ⅱ tailings g is returned to the concentrated ore Ⅰ step; the concentrated ore Ⅱ f is a copper-molybdenum mixed concentrate; D. Scan and select: 1) copper-molybdenum collector and pine oil are sequentially added to the copper-molybdenum mixed rougher tailings c to perform scavenging I to obtain scavenging I concentrate i and scavenging I tailings j, and the scavenging I concentrate i is returned to the pre-treatment step; 2) Adding copper-molybdenum collector and pine oil to scavenging I tailings j in sequence to carry out scavenging II to obtain scavenging II concentrate k and scavenging II tailings l, and scavenging II concentrate k returns to scavenging I step; 3) Copper-molybdenum collector and pine oil are sequentially added to scavenging II tailings l to carry out scavenging III to obtain scavenging III concentrate m and scavenging III tailings n. The scavenging III concentrate m is returned to the scavenging II step; the scavenging III tailings n is the final tailings.

[0007] The specific operations are as follows: (1) The Cu grade of a copper-molybdenum mine is 0.24% and the Mo grade is 0.0061%, of which -10μm accounts for 20%, which is a high-mud low-grade copper-molybdenum mine. The high-mud low-grade copper-molybdenum mine with a grinding fineness of -200 mesh and a proportion of 63% is slurried to a slurry mass percentage concentration of 30%~45%; (2) adding 350 g / t of lime, 90-120 g / t of combined collector and 30-40 g / t of pine oil to the slurry in step (1) in sequence, and performing a roughing operation to obtain a copper-molybdenum mixed roughing concentrate and a copper-molybdenum mixed roughing tailings; (3) adding 10-20 g / t of combined collector and 10-20 g / t of pine oil to the copper-molybdenum mixed rougher concentrate in step (2) in sequence, and performing a series of concentration operations I to obtain a copper-molybdenum mixed concentration I concentrate and a copper-molybdenum mixed concentration I tailings; (4) adding 0-10 g / t of combined collector and 0-10 g / t of pine oil to the copper-molybdenum mixed concentration I concentrate in step (3) in sequence, and performing series concentration II operations to obtain a copper-molybdenum mixed concentrate and a copper-molybdenum mixed concentration I tailings; (5) Adding 40-50 g / t of combined collector and 10-20 g / t of pine oil to the copper-molybdenum mixed roughing tailings in step (2) in sequence, and performing a series of scavenging operations I to obtain copper-molybdenum mixed scavenging I concentrate and copper-molybdenum mixed scavenging I tailings.

[0008] (6) Adding 30-40 g / t of combined collector and 10-20 g / t of pine oil to the copper-molybdenum mixed scavenging I tailings in step (5) in sequence, and performing a series of scavenging II operations to obtain a copper-molybdenum mixed scavenging II concentrate and a copper-molybdenum mixed scavenging II tailings.

[0009] (7) Adding 30-40 g / t of combined collector and 10-20 g / t of pine oil to the copper-molybdenum mixed scavenging II tailings in step (6) in sequence, and performing a series of scavenging III operations to obtain a copper-molybdenum mixed scavenging III concentrate and a copper-molybdenum mixed tailings.

[0010] The novel collector is sodium diphenyl dithiocarbamate, ammonium butyl dithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyl dithiophosphate, dodecyl mercaptan, and sodium dimethyl butyl xanthate.

[0011] The combined collector is prepared by mixing sodium diphenyl dithiocarbamate, ammonium butyl dithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyl dithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate in an amount of 40%: 20%: 20%: 10%: 5%: 5%.

[0012] The amount of the combined collector added in step (2) is 90-120 g / t.

[0013] The amount of the combined collector added in step (3) is 10-20 g / t.

[0014] The amount of the combined collector added in step (4) is 0-10 g / t.

[0015] The amount of the combined collector added in step (5) is 40-50 g / t.

[0016] The amount of the combined collector added in step (6) is 30-40 g / t.

[0017] The amount of the combined collector added in step (7) is 30-40 g / t.

[0018] The advantages and beneficial effects of the present invention are as follows: 1. The copper-molybdenum collector of the present invention realizes the efficient flotation of high-mud-content low-grade copper-molybdenum ore, effectively solves the problem of insufficient separation ability of conventional reagents for high-mud-content low-grade copper-molybdenum ore, and reduces the loss of copper and molybdenum resources.

[0019] 2. The copper-molybdenum collector of the present invention is used to enhance the collection capacity of low-grade copper-molybdenum ore with high mud content, reduce the dosage of reagents, and reduce the separation cost.

[0020] 3. In addition, compared with the case where the copper-molybdenum collector of the present invention is not added, at the same dosage of the reagent, the use of this combined collector can increase the copper grade by 0.5-2 percentage points, the molybdenum grade by 1-2 percentage points, the copper recovery rate by 0.5-1%, and the molybdenum recovery rate by more than 1-2%.

[0021] The technical principle of the copper-molybdenum collector is as follows: The copper-molybdenum collector of the present invention includes sodium diphenyl dithiocarbamate (copper-molybdenum collector), sodium butyl dithiocarbamate (copper-molybdenum collector), 4-amino-1-naphthalenesulfonic acid (dye intermediate pigment), sodium diethyl dithiophosphate (copper-molybdenum collector), dodecyl mercaptan (molybdenum collector) and sodium dimethylbutyl xanthate (copper-molybdenum collector). Under the synergistic effect of each agent, the application effect on high-mud-containing low-grade copper-molybdenum ore is remarkable, which can significantly improve the molybdenum grade and the recovery rate of copper and molybdenum, and reduce the viscosity of the ore pulp. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the process flow of the present invention. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the embodiments, but the present invention is not limited in any way. Any changes or substitutions made based on the teachings of the present invention belong to the protection scope of the present invention.

[0024] The copper-molybdenum collector of the present invention is composed of sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate.

[0025] The mass ratio of sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate is (30-50): (10-30): (10-30): (5-15): (3-7): (3-7).

[0026] The mass ratio of sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate is (35-45): (15-25): (15-25): (8-12): (4-6): (4-6).

[0027] The mass ratio of sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate is 40:20:20:10:5:5.

[0028] The preparation method of the copper-molybdenum collector of the present invention is to mix sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate in a formula ratio to prepare the collector.

[0029] The application of the copper-molybdenum collector described in the present invention is the application of the copper-molybdenum collector in the efficient flotation process of high-mud content low-grade copper-molybdenum ore.

[0030] The high-efficiency flotation process for high-mud-content low-grade copper-molybdenum ore includes pre-treatment, roughing, cleaning and scavenging steps, specifically including: A. Pretreatment: Grind the raw material high-mud-content low-grade copper-molybdenum ore to -200 mesh accounting for more than 60%, and adjust the slurry to a slurry mass percentage concentration of 30-40% to obtain material a; B. Roughing: lime, copper-molybdenum collector and pine oil are sequentially added to material a for flotation to obtain copper-molybdenum mixed roughing concentrate b and copper-molybdenum mixed roughing tailings c; C. Selected: 1) copper-molybdenum collector and pine oil are sequentially added to the copper-molybdenum mixed rougher concentrate b to perform concentration I to obtain concentrated I concentrate d and concentrated I tailings e, and the concentrated I tailings e are returned to the pre-treatment step; 2) Adding copper-molybdenum collector and pine oil to the concentrated ore d in turn to perform concentrated ore Ⅱ to obtain concentrated ore Ⅱ f and concentrated ore Ⅱ tailings g, and the concentrated ore Ⅱ tailings g is returned to the concentrated ore Ⅰ step; the concentrated ore Ⅱ f is a copper-molybdenum mixed concentrate; D. Scan and select: 1) copper-molybdenum collector and pine oil are sequentially added to the copper-molybdenum mixed rougher tailings c to perform scavenging I to obtain scavenging I concentrate i and scavenging I tailings j, and the scavenging I concentrate i is returned to the pre-treatment step; 2) Adding copper-molybdenum collector and pine oil to scavenging I tailings j in sequence to carry out scavenging II to obtain scavenging II concentrate k and scavenging II tailings l, and scavenging II concentrate k returns to scavenging I step; 3) Copper-molybdenum collector and pine oil are sequentially added to scavenging II tailings l to carry out scavenging III to obtain scavenging III concentrate m and scavenging III tailings n. The scavenging III concentrate m is returned to the scavenging II step; the scavenging III tailings n is the final tailings.

[0031] In step B, the amount of lime added is 300-400 g / t; the amount of copper-molybdenum collector added is 90-120 g / t; and the amount of pine oil added is 30-40 g / t.

[0032] In step C 1), the amount of copper-molybdenum collector added is 10-20 g / t; the amount of pine oil added is 10-20 g / t; in step C 2), the amount of copper-molybdenum collector added is 0-10 g / t; the amount of pine oil added is 0-10 g / t.

[0033] In step D 1), the amount of copper-molybdenum collector added is 40-50 g / t; the amount of pine oil added is 10-20 g / t; in step D 2), the amount of copper-molybdenum collector added is 30-40 g / t; the amount of pine oil added is 10-20 g / t; in step D 3), the amount of copper-molybdenum collector added is 30-40 g / t; the amount of pine oil added is 10-20 g / t.

[0034] The present invention is further described below with specific implementation cases: Example 1 (1) The high-mud-content low-grade copper-molybdenum ore with a grinding fineness of -200 mesh accounting for 63% is slurried to a slurry mass percentage concentration of 35%; among which, the Cu grade is 0.24%, the Mo grade is 0.0061%, and the -10μm accounts for 20%.

[0035] (2) In step (1), 350 g / t of lime, 90-120 g / t of combined collector and 30-40 g / t of pine oil are sequentially added to the ore pulp, and a roughing operation is performed to obtain a copper-molybdenum mixed roughing concentrate and a copper-molybdenum mixed roughing tailings; wherein the combined collector is a mixture of sodium diphenyldithiocarbamate, ammonium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate in a ratio of 40%:20%:20%:10%:5%:5%.

[0036] (3) Add 10-20 g / t of combined collector and 10-20 g / t of pine oil to the copper-molybdenum roughing concentrate in step (2) in sequence, carry out the selection I operation to obtain the selection I concentrate and the selection I tailings, and the selection I tailings are returned for slurry adjustment and incorporated into the roughing operation; carry out the selection I concentrate for the selection II operation, and obtain the selection II concentrate and the selection II tailings in the selection II operation, and the selection II tailings are returned for slurry adjustment and incorporated into the selection I operation. After one roughing, two fines and three sweeps, a copper-molybdenum mixed concentrate is obtained; wherein the combined collector is a mixture of sodium diphenyl dithiocarbamate, ammonium butyl dithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyl dithiophosphate, dodecyl mercaptan, and sodium dimethylbutyl xanthate in a ratio of 40%: 20%: 20%: 10%: 5%: 5%.

[0037] (4) adding 40-50 g / t of combined collector and 10-20 g / t of pine oil to the copper-molybdenum roughing tailings in step (2) in sequence, and performing scavenging I operation to obtain scavenging I concentrate and scavenging I tailings, and returning the scavenging I concentrate to the roughing operation; Add 30-40 g / t of combined collector and 10-20 g / t of pine oil to scavenging I tailings, carry out scavenging II operation to obtain scavenging II concentrate and scavenging II tailings, and incorporate scavenging II concentrate into scavenging I operation; add 30-40 g / t of combined collector and 10-20 g / t of pine oil to scavenging II tailings, carry out scavenging III operation to obtain scavenging III concentrate and tailings, and incorporate scavenging III concentrate into scavenging IⅠ operation; wherein, the combined collector is a mixture of sodium diphenyl dithiocarbamate, ammonium butyl dithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyl dithiophosphate, dodecyl mercaptan, and sodium dimethylbutyl xanthate in a ratio of 40%:20%:20%:10%:5%:5%.

[0038] In this embodiment, the copper grade of the copper-molybdenum mixed concentrate is 21.02%, the copper recovery rate is 86.78%, the molybdenum grade is 0.26%, and the molybdenum recovery rate is 86.07%.

[0039] Example 2 (1) The high-mud-content low-grade copper-molybdenum ore with a grinding fineness of -200 mesh accounting for 63% is slurried to a slurry mass percentage concentration of 35%; among which, the Cu grade is 0.24%, the Mo grade is 0.0061%, and the -10μm accounts for 20%.

[0040] (2) adding 350 g / t of lime, collector Z200, 90-120 g / t of butyl xanthate and 30-40 g / t of pine oil to the slurry in step (1) in sequence, and performing a roughing operation to obtain a copper-molybdenum mixed roughing concentrate and a copper-molybdenum mixed roughing tailings; (3) Collector Z200, 10-20 g / t of butyl xanthate and 10-20 g / t of pine oil are added to the copper-molybdenum roughing concentrate in step (2) in sequence, and the concentrating operation I is carried out to obtain the concentrating concentrate I and the concentrating tailings I, and the concentrating tailings I are returned for slurry adjustment and incorporated into the roughing operation; the concentrating concentrate I is carried out to obtain the concentrating concentrate II and the concentrating tailings II, and the concentrating tailings II are returned for slurry adjustment and incorporated into the concentrating operation I. After one roughing, two concentrating and three sweeping, a copper-molybdenum mixed concentrate is obtained; (4) adding collector Z200, 40-50 g / t of butyl xanthate and 10-20 g / t of pine oil to the copper-molybdenum roughing tailings in step (2) in sequence, and performing scavenging I operation to obtain scavenging I concentrate and scavenging I tailings, and returning the scavenging I concentrate to the roughing operation; Collector Z200 and pine oil 10-20g / t are added to scavenging Ⅰ tailings, and scavenging Ⅱ operation is carried out to obtain scavenging Ⅱ concentrate and scavenging Ⅱ tailings, and scavenging Ⅱ concentrate is incorporated into scavenging Ⅰ operation; collector Z200 and pine oil 10-20g / t are added to scavenging Ⅰ tailings, and scavenging ⅡI operation is carried out to obtain scavenging ⅡI concentrate and tailings, and scavenging ⅡI concentrate is incorporated into scavenging Ⅰ operation; In this embodiment, the copper grade of the copper-molybdenum mixed concentrate is 19.33%, the copper recovery rate is 84.78%, the molybdenum grade is 0.20%, and the molybdenum recovery rate is 84.21%.

[0041] Example 3 (1) The high-mud-content low-grade copper-molybdenum ore with a grinding fineness of -200 mesh accounting for 63% is slurried to a slurry mass percentage concentration of 35%; among which, the Cu grade is 0.24%, the Mo grade is 0.0061%, and the -10μm accounts for 20%.

[0042] (2) In step (1), 350 g / t of lime, 90-120 g / t of combined collector and 30-40 g / t of pine oil are sequentially added to the ore pulp, and a roughing operation is performed to obtain a copper-molybdenum mixed roughing concentrate and a copper-molybdenum mixed roughing tailings; wherein the combined collector is a mixture of sodium diphenyldithiocarbamate, ammonium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate in a ratio of 45%:15%:20%:10%:5%:5%.

[0043] (3) Add 10-20 g / t of combined collector and 10-20 g / t of pine oil to the copper-molybdenum roughing concentrate in step (2) in sequence, carry out the concentration I operation to obtain the concentration I concentrate and the concentration I tailings, and the concentration I tailings are returned for slurry adjustment and incorporated into the roughing operation; carry out the concentration I concentrate for the concentration II operation, and obtain the concentration II concentrate and the concentration II tailings in the concentration II operation, and the concentration II tailings are returned for slurry adjustment and incorporated into the concentration I operation. After one roughing, two fines and three sweeps, a copper-molybdenum mixed concentrate is obtained; wherein the combined collector is a mixture of sodium diphenyl dithiocarbamate, ammonium butyl dithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyl dithiophosphate, dodecyl mercaptan, and sodium dimethylbutyl xanthate in 45%:15%:20%:10%:5%:5%.

[0044] (4) adding 40-50 g / t of combined collector and 10-20 g / t of pine oil to the copper-molybdenum roughing tailings in step (2) in sequence, and performing scavenging I operation to obtain scavenging I concentrate and scavenging I tailings, and returning the scavenging I concentrate to the roughing operation; Add 30-40 g / t of combined collector and 10-20 g / t of pine oil to scavenging I tailings, carry out scavenging II operation to obtain scavenging II concentrate and scavenging II tailings, and the scavenging II concentrate is incorporated into scavenging I operation; add 30-40 g / t of combined collector and 10-20 g / t of pine oil to scavenging II tailings, carry out scavenging III operation to obtain scavenging III concentrate and tailings, and the scavenging III concentrate is incorporated into scavenging IⅠ operation; wherein, the combined collector is a mixture of sodium diphenyl dithiocarbamate, ammonium butyl dithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyl dithiophosphate, dodecyl mercaptan, and sodium dimethylbutyl xanthate in a ratio of 45%:15%:20%:10%:5%:5%. In this embodiment, the copper grade of the copper-molybdenum mixed concentrate is 20.98%, the copper recovery rate is 85.68%, the molybdenum grade is 0.24%, and the molybdenum recovery rate is 84.87%.

[0045] Example 4 (1) The high-mud-content low-grade copper-molybdenum ore with a grinding fineness of -200 mesh accounting for 63% is slurried to a slurry mass percentage concentration of 35%; among which, the Cu grade is 0.24%, the Mo grade is 0.0061%, and the -10μm accounts for 20%.

[0046] (2) In step (1), 350 g / t of lime, 90-120 g / t of combined collector and 30-40 g / t of pine oil are sequentially added to the ore pulp, and a roughing operation is performed to obtain a copper-molybdenum mixed roughing concentrate and a copper-molybdenum mixed roughing tailings; wherein the combined collector is a mixture of sodium diphenyldithiocarbamate, ammonium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate in a ratio of 40%:15%:15%:15%:10%:5%.

[0047] (3) Add 10-20 g / t of combined collector and 10-20 g / t of pine oil to the copper-molybdenum roughing concentrate in step (2) in sequence, carry out the selection I operation to obtain the selection I concentrate and the selection I tailings, and the selection I tailings are returned for slurry adjustment and incorporated into the roughing operation; carry out the selection I concentrate for the selection II operation, and obtain the selection II concentrate and the selection II tailings in the selection II operation, and the selection II tailings are returned for slurry adjustment and incorporated into the selection I operation. After one roughing, two fines and three sweeps, a copper-molybdenum mixed concentrate is obtained; wherein the combined collector is a mixture of sodium diphenyl dithiocarbamate, ammonium butyl dithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyl dithiophosphate, dodecyl mercaptan, and sodium dimethylbutyl xanthate in a ratio of 40%:15%:15%:15%:10%:5%.

[0048] (4) adding 40-50 g / t of combined collector and 10-20 g / t of pine oil to the copper-molybdenum roughing tailings in step (2) in sequence, and performing scavenging I operation to obtain scavenging I concentrate and scavenging I tailings, and returning the scavenging I concentrate to the roughing operation; Add 30-40 g / t of combined collector and 10-20 g / t of pine oil to scavenging I tailings, carry out scavenging II operation to obtain scavenging II concentrate and scavenging II tailings, and incorporate the scavenging II concentrate into scavenging I operation; add 30-40 g / t of combined collector and 10-20 g / t of pine oil to scavenging II tailings, carry out scavenging III operation to obtain scavenging III concentrate and tailings, and incorporate the scavenging III concentrate into scavenging IⅠ operation; wherein, the combined collector is a mixture of sodium diphenyl dithiocarbamate, ammonium butyl dithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyl dithiophosphate, dodecyl mercaptan, and sodium dimethylbutyl xanthate in a ratio of 40%:15%:15%:15%:10%:5%.

[0049] In this embodiment, the copper grade of the copper-molybdenum mixed concentrate is 19.98%, the copper recovery rate is 84.98%, the molybdenum grade is 0.22%, and the molybdenum recovery rate is 84.49%.

Claims

1. A copper-molybdenum collector, characterized in that: The copper-molybdenum collector is composed of sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate.

2. The copper-molybdenum collector according to claim 1, characterized in that The mass ratio of sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate is (30-50): (10-30): (10-30): (5-15): (3-7): (3-7).

3. The copper-molybdenum collector according to claim 1, characterized in that The mass ratio of sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate is (35-45): (15-25): (15-25): (8-12): (4-6): (4-6).

4. The copper-molybdenum collector according to claim 1, characterized in that The mass ratio of sodium diphenyldithiocarbamate, sodium butyldithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyldithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate is 40:20:20:10:5:

5.

5. A method for preparing the copper-molybdenum collector according to any one of claims 1 to 4, characterized in that: The invention is prepared by uniformly mixing sodium diphenyl dithiocarbamate, sodium butyl dithiocarbamate, 4-amino-1-naphthalenesulfonic acid, sodium diethyl dithiophosphate, dodecyl mercaptan and sodium dimethylbutyl xanthate.

6. An application of the copper-molybdenum collector according to any one of claims 1 to 4, characterized in that: The copper-molybdenum collector is used in the efficient flotation process of high-mud-containing low-grade copper-molybdenum ore.

7. The use according to claim 6, characterized in that: The high-efficiency flotation process for high-mud-content low-grade copper-molybdenum ore includes pre-treatment, roughing, cleaning and scavenging steps, specifically including: A. Pretreatment: Grind the raw material high-mud-content low-grade copper-molybdenum ore to -200 mesh accounting for more than 60%, and adjust the slurry to a slurry mass percentage concentration of 30-40% to obtain material a; B. Roughing: lime, copper-molybdenum collector and pine oil are sequentially added to material a for flotation to obtain copper-molybdenum mixed roughing concentrate b and copper-molybdenum mixed roughing tailings c; C. Selected: 1) copper-molybdenum collector and pine oil are sequentially added to the copper-molybdenum mixed rougher concentrate b to perform concentration I to obtain concentrated I concentrate d and concentrated I tailings e, and the concentrated I tailings e are returned to the pre-treatment step; 2) Adding copper-molybdenum collector and pine oil to the concentrated ore d in turn to perform concentrated ore Ⅱ to obtain concentrated ore Ⅱ f and concentrated ore Ⅱ tailings g, and the concentrated ore Ⅱ tailings g is returned to the concentrated ore Ⅰ step; the concentrated ore Ⅱ f is a copper-molybdenum mixed concentrate; D. Scan and select: 1) copper-molybdenum collector and pine oil are sequentially added to the copper-molybdenum mixed rougher tailings c to perform scavenging I to obtain scavenging I concentrate i and scavenging I tailings j, and the scavenging I concentrate i is returned to the pre-treatment step; 2) Adding copper-molybdenum collector and pine oil to the scavenging I tailings j in sequence to carry out scavenging II to obtain scavenging II concentrate k and scavenging II tailings l, and the scavenging II concentrate k returns to the scavenging I step; 3) Copper-molybdenum collector and pine oil are sequentially added to scavenging II tailings l to carry out scavenging III to obtain scavenging III concentrate m and scavenging III tailings n. The scavenging III concentrate m is returned to the scavenging II step; the scavenging III tailings n is the final tailings.

8. The use according to claim 7, characterized in that: In step B, the amount of lime added is 300-400 g / t; the amount of copper-molybdenum collector added is 90-120 g / t; and the amount of pine oil added is 30-40 g / t.

9. The use according to claim 7, characterized in that: In step C 1), the amount of copper-molybdenum collector added is 10-20 g / t; the amount of pine oil added is 10-20 g / t; in step C 2), the amount of copper-molybdenum collector added is 0-10 g / t; the amount of pine oil added is 0-10 g / t.

10. The use according to claim 7, characterized in that: In step D 1), the amount of copper-molybdenum collector added is 40-50 g / t; the amount of pine oil added is 10-20 g / t; in step D 2), the amount of copper-molybdenum collector added is 30-40 g / t; the amount of pine oil added is 10-20 g / t; in step D 3), the amount of copper-molybdenum collector added is 30-40 g / t; the amount of pine oil added is 10-20 g / t.

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