A method for activated flotation of carbonate-type copper oxide ore

Abstract

The present invention relates to an activated flotation method for carbonate-type copper oxide ore, and belongs to the technical field of mineral processing. Aiming at the technical problems of mutual influence between minerals, difficulty in suppressing gangue minerals, and difficulty in efficiently recovering copper oxide minerals in the flotation process of carbonate-type copper oxide ore, the present invention adopts a composite regulator to eliminate the adverse effects of calcium and magnesium ions in carbonate-type copper oxide ore pulp on flotation, selectively suppress gangue minerals, and regulate the reaction activity on the surface of copper oxide minerals; a composite sulfiding agent deeply sulfides the copper oxide minerals in the ore, and a coupling activator reacts with the surface of the sulfided copper oxide minerals to form a highly active copper-lead-sulfur coupling interface; a composite collector and a frother selectively hydrophobic and control bubbles on the activated copper oxide minerals, and flotation is performed after slurry adjustment to obtain copper concentrate and flotation tailings. The present invention gives full play to the synergistic effect of regulators, sulfiding agents, activators and collectors, targets and separates carbonate-type copper oxide ore, and realizes efficient recovery of difficult-to-select copper minerals.

Description

Technical Field

[0001] The invention relates to an activation flotation method for carbonate type copper oxide ore, belonging to the technical field of mineral processing. Background Art

[0002] Copper is an important strategic metal in my country. Its consumption is second only to aluminum. It is widely used in the fields of electrical, defense industry, construction industry, machinery manufacturing, etc. With the rapid increase in the demand for copper metal, the problem of copper resource supply has become increasingly prominent. Therefore, it is extremely important to efficiently develop and utilize domestic copper resources. Copper ore is the main raw material for copper metal smelting. At present, the easily selectable copper sulfide ore is decreasing. The hot spots of research at home and abroad are focused on the efficient sorting of oxidized copper ore. Compared with sulfide copper ore, the recycling of oxidized copper ore is more difficult. This is mainly due to the complex mineral composition, high bonding rate, fine embedded particle size and severe mudification of oxidized copper ore. Therefore, it is necessary to develop targeted flotation agents and sorting processes for oxidized copper.

[0003] The flotation methods of oxidized copper ore mainly include fatty acid flotation, chelate collector flotation and sulfide flotation. However, oxidized copper ore is often accompanied by a large amount of gangue minerals containing calcium, magnesium, iron, etc., and the mud phenomenon is serious, which limits the application of fatty acid flotation. Organic chelate collectors can selectively form insoluble chelates with ring structures with copper atoms on the surface of oxidized copper minerals, which can increase the hydrophobicity of the mineral surface, but such agents are expensive and there are still some problems in their large-scale use in actual production. Compared with direct flotation, sulfide xanthate flotation is a commonly used beneficiation method for oxidized copper ore, which focuses on surface sulfidation and xanthate adsorption. Aiming at the problems of poor sulfidation effect, difficulty in stable adsorption of collectors, unsatisfactory flotation indexes, etc. in the traditional sulfidation flotation method, a method for enhanced sulfidation flotation recovery of copper oxide ores by step-by-step activation of copper oxide with ammonia complex is proposed. A combined inhibitor is added to inhibit gangue minerals in the copper oxide ore, and then a new activator copper oxide complex is added for primary activation. After activation, a combined sulfiding agent is added for surface enhanced sulfidation. After enhanced sulfidation, a copper oxide complex is added to the ore pulp for secondary activation. Finally, a combined collector and a frother are added in sequence to flotate and recover copper minerals in the ore, thereby improving the flotation effect of copper oxide minerals in the ore. However, the inhibitor, sulfiding agent and collector used in this method are all combinations of commonly used reagents, and it is difficult to ensure efficient recovery of complex copper oxide ores with high carbonate content.

[0004] Carbonate copper oxide ore is a type of copper oxide ore that is extremely difficult to recover. The ore contains a large amount of carbonate gangue minerals, such as calcite and dolomite. These minerals will generate a large amount of free calcium ions and magnesium ions during the grinding and stirring of the ore, which will deteriorate the pulp environment and non-selectively adsorb on the surface of the copper oxide mineral, resulting in calcification and magnesiumization of the copper oxide mineral surface, reducing the surface property difference and flotation difference between the target mineral and the gangue mineral, and increasing the difficulty of sorting. Therefore, a selective adjuster needs to be added during the flotation process to change the surface characteristics of the mineral, eliminate the influence of calcium ions and magnesium ions in the pulp solution on the flotation of copper oxide minerals, and achieve efficient enrichment of carbonate copper oxide ore. However, the existing flotation reagents cannot specifically treat carbonate copper oxide ore, and the synergistic effect of the adjuster, activator, sulfiding agent and collector involved in the flotation process is poor, and the flotation index is not ideal. Therefore, it is urgent to develop a new technology that can efficiently separate and utilize carbonate-type copper oxide ores, maximize the comprehensive utilization rate of this type of resources, and provide technical support for the efficient recycling and utilization of my country's abundant copper oxide ores. Summary of the invention

[0005] The invention aims at the technical problems of mutual influence between minerals, difficulty in suppressing gangue minerals and difficulty in efficiently recovering oxidized copper minerals in the flotation process of carbonate-type oxidized copper ore, and proposes an activated flotation method for carbonate-type oxidized copper ore, that is, a composite regulator (phytic acid, sodium lignin sulfonate and oxalic acid) is used to regulate the pulp environment and mineral surface characteristics to improve the selectivity of subsequent flotation reagents, then a composite sulfiding agent (thioacetamide and sodium hydrosulfide) and a coupling activator (copper chloride and lead acetate) are added to react with the surface of the oxidized copper mineral to enhance the reaction activity of the mineral surface and form a highly active copper-lead-sulfur coupling interface, and finally a composite collector (sodium isopentyl xanthate, N-hydroxybenzamide and dodecyltrimethylammonium chloride) and a frother are added to selectively hydrophobize and control foaming of the activated oxidized copper mineral, so as to achieve efficient recovery of the difficult-to-select copper mineral.

[0006] An activated flotation method for carbonate-type copper oxide ore, the specific steps are as follows:

[0007] (1) crushing and grinding the carbonate-type copper oxide ore until more than 88% of the copper oxide mineral monomers are dissociated, and slurrying to a slurry mass concentration of 28-36%;

[0008] (2) adding a composite adjusting agent, a composite sulfiding agent, a coupling activator, a composite collecting agent and a frother in sequence to the ore pulp obtained in step (1), and performing a primary roughing operation to obtain a primary roughing concentrate and a primary roughing tailings;

[0009] (3) adding a composite adjusting agent, a composite vulcanizing agent, a coupling activator, a composite collecting agent and a frother in sequence to the primary roughing tailings obtained in step (2), and performing a secondary roughing operation to obtain a secondary roughing concentrate and a secondary roughing tailings;

[0010] (4) adding a composite adjusting agent, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the secondary roughing tailings obtained in step (3), and performing a first scavenging operation to obtain a first scavenging concentrate and a first scavenging tailings; the first scavenging concentrate is returned to the slurry for slurry adjustment and incorporated into the secondary roughing operation; adding a composite collector to the first scavenging tailings to perform a second scavenging operation to obtain a second scavenging concentrate and flotation tailings, and the second scavenging concentrate is returned to the slurry for slurry adjustment and incorporated into the first scavenging operation;

[0011] (5) combining the primary roughing concentrate obtained in step (2) and the secondary roughing concentrate obtained in step (3), adding a composite adjusting agent to perform a primary concentration operation to obtain a primary concentrated concentrate and a primary concentrated tailings; returning the primary concentrated tailings to the slurry for incorporation into the primary roughing operation; adding a composite adjusting agent to the primary concentrated concentrate to perform a secondary concentration operation to obtain a flotation copper concentrate and a secondary concentrated tailings; returning the secondary concentrated tailings to the slurry for incorporation into the primary concentration operation;

[0012] The composite regulator is a mixture of phytic acid, sodium lignin sulfonate and oxalic acid, the composite vulcanizing agent is a mixture of thioacetamide and sodium hydrosulfide, the coupling activator is a mixture of cupric chloride and lead acetate, and the composite collector is a mixture of sodium isopentyl xanthate, N-hydroxybenzamide and dodecyltrimethylammonium chloride.

[0013] The mass percentage content of copper in the carbonate-type copper oxide ore in step (1) is 0.8-1.8%.

[0014] Based on each ton of carbonate copper oxide ore, 600-1200 g of a composite adjusting agent, 1200-2400 g of a composite sulfiding agent, 300-500 g of a coupling activator, 400-800 g of a composite collector and 40-60 g of a foaming agent are added to the ore pulp of the primary roughing operation in step (2).

[0015] Based on each ton of carbonate copper oxide ore, 300-600 g of a composite adjusting agent, 600-1200 g of a composite sulfiding agent, 150-250 g of a coupling activator, 200-400 g of a composite collector and 20-30 g of a foaming agent are added to the ore pulp of the secondary roughing operation in step (3).

[0016] Based on each ton of carbonate copper oxide ore, 150-300 g of a composite regulator, 300-600 g of a composite sulfidizer, 75-125 g of a coupling activator, 100-200 g of a composite collector and 10-15 g of a foaming agent are added to the slurry of the primary scavenging operation in step (4); and 50-100 g of a composite collector is added to the slurry of the secondary scavenging operation.

[0017] Based on each ton of carbonate copper oxide ore, 100-200 g of the composite regulator is added to the slurry of the primary concentration operation in step (5); and 50-100 g of the composite regulator is added to the slurry of the secondary concentration operation.

[0018] Taking the mass fraction of the composite regulator as 100%, phytic acid accounts for 15-25%, sodium lignin sulfonate accounts for 25-35%, and oxalic acid accounts for 45-55%.

[0019] Taking the mass fraction of the composite vulcanizing agent as 100%, thioacetamide accounts for 15-25% and sodium hydrosulfide accounts for 75-85%.

[0020] Taking the mass fraction of the coupling activator as 100%, cupric chloride accounts for 45-55% and lead acetate accounts for 45-55%.

[0021] Taking the mass fraction of the composite collector as 100%, sodium isopentyl xanthate accounts for 55-65%, N-hydroxybenzamide accounts for 25-35%, and dodecyl trimethyl ammonium chloride accounts for 5-15%.

[0022] The foaming agent is pine oil.

[0023] The beneficial effects of the present invention are:

[0024] (1) The present invention uses phytic acid, sodium lignin sulfonate and oxalic acid as composite regulators, which can not only eliminate the adverse effects of calcium and magnesium ions in the slurry on flotation, selectively inhibit gangue minerals, but also eliminate hydrophilic substances on the surface of copper oxide minerals, thereby improving the selectivity of flotation reagents and the surface of copper oxide minerals;

[0025] (2) The present invention uses thioacetamide and sodium hydrosulfide as composite sulfiding agents to achieve deep sulfidation of copper oxide minerals in the ore, and copper chloride and lead acetate as coupling activators can react with the surface of the sulfided copper oxide mineral to form a highly active copper-lead-sulfur coupling interface, thereby improving the reaction activity of the mineral surface;

[0026] (3) The present invention uses sodium isopentyl xanthate, N-hydroxybenzamide and dodecyl trimethyl ammonium chloride as composite collectors, which can be selectively adsorbed on the copper-lead-sulfur coupling interface, which not only improves the adsorption density of the collector, but also enhances the hydrophobicity of the surface of the copper oxide mineral, optimizes the flotation foam structure and ore-carrying capacity, and promotes the efficient flotation recovery of difficult-to-select copper oxide minerals;

[0027] (4) The present invention gives full play to the synergistic effect of the composite flotation reagent, and has a simple preparation process and is easy to use, thereby simplifying the flotation process structure, reducing the beneficiation cost, and obtaining satisfactory separation indicators. It economically and efficiently solves the technical problems of the mutual influence between minerals, the difficulty in suppressing gangue minerals, and the difficulty in efficiently recovering oxidized copper minerals during the flotation of carbonate-type oxidized copper ores. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a process flow chart of the present invention. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with specific implementation modes, but the protection scope of the present invention is not limited to the described contents.

[0030] In the following embodiments of the present invention, the composite regulator is a mixture of phytic acid, sodium lignin sulfonate and oxalic acid, the composite vulcanizing agent is a mixture of thioacetamide and sodium hydrosulfide, the coupling activator is a mixture of cupric chloride and lead acetate, the composite collector is a mixture of sodium isopentyl xanthate, N-hydroxybenzamide and dodecyltrimethylammonium chloride, and the foaming agent is pine oil.

[0031] Example 1: In this example, based on the mass fraction of the composite regulator as 100%, phytic acid accounts for 15%, sodium lignin sulfonate accounts for 35%, and oxalic acid accounts for 50%; based on the mass fraction of the composite vulcanizing agent as 100%, thioacetamide accounts for 15%, and sodium hydrosulfide accounts for 85%; based on the mass fraction of the coupling activator as 100%, cupric chloride accounts for 45%, and lead acetate accounts for 55%; based on the mass fraction of the composite collector as 100%, sodium isopentyl xanthate accounts for 55%, N-hydroxybenzamide accounts for 35%, and dodecyltrimethylammonium chloride accounts for 10%;

[0032] like Figure 1 As shown, an activation flotation method for carbonate-type copper oxide ore, the specific steps are as follows:

[0033] (1) crushing and grinding the carbonate-type copper oxide ore until more than 88% of the copper oxide mineral monomers are dissociated, and adjusting the slurry to a slurry mass percentage concentration of 28%; wherein the mass percentage content of copper in the carbonate-type copper oxide ore is 0.8%;

[0034] (2) adding a composite regulator, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the slurry obtained in step (1), and performing a roughing operation to obtain a roughing concentrate and a roughing tailing; per ton of carbonate copper oxide ore, 600 g of the composite regulator, 1200 g of the composite sulfiding agent, 300 g of the coupling activator, 400 g of the composite collector and 40 g of the frother are added to the slurry of the roughing operation;

[0035] (3) adding a composite regulator, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the primary roughing tailings obtained in step (2), and performing a secondary roughing operation to obtain a secondary roughing concentrate and a secondary roughing tailings; per ton of carbonate-type copper oxide ore, 300 g of the composite regulator, 600 g of the composite sulfiding agent, 150 g of the coupling activator, 200 g of the composite collector and 20 g of the frother are added to the slurry of the secondary roughing operation;

[0036] (4) adding a composite regulator, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the secondary roughing tailings obtained in step (3), and performing a first scavenging operation to obtain a first scavenging concentrate and a first scavenging tailings; the first scavenging concentrate is returned for slurry adjustment and incorporated into the secondary roughing operation; the composite collector is added to the first scavenging tailings for a second scavenging operation to obtain a second scavenging concentrate and a flotation tailings, and the second scavenging concentrate is returned for slurry adjustment and incorporated into the first scavenging operation; per ton of carbonate-type copper oxide ore, 150 g of the composite regulator, 300 g of the composite sulfiding agent, 75 g of the coupling activator, 100 g of the composite collector and 10 g of the frother are added to the slurry of the first scavenging operation; 50 g of the composite collector is added to the slurry of the secondary scavenging operation;

[0037] (5) combining the primary roughing concentrate obtained in step (2) and the secondary roughing concentrate obtained in step (3), adding a composite adjusting agent to perform a primary concentration operation to obtain a primary concentration concentrate and a primary concentration tailings; returning the primary concentration tailings to the primary roughing operation for slurry adjustment; adding a composite adjusting agent to the primary concentration concentrate to perform a secondary concentration operation to obtain a flotation copper concentrate and a secondary concentration tailings; returning the secondary concentration tailings to the primary concentration operation for slurry adjustment; based on each ton of carbonate-type copper oxide ore, 100 g of the composite adjusting agent is added to the slurry of the primary concentration operation; and 50 g of the composite adjusting agent is added to the slurry of the secondary concentration operation;

[0038] The flotation recovery rate of copper in this example is 86.4%.

[0039] Example 2: In this example, based on the mass fraction of the composite regulator as 100%, phytic acid accounts for 20%, sodium lignin sulfonate accounts for 25%, and oxalic acid accounts for 55%; based on the mass fraction of the composite vulcanizing agent as 100%, thioacetamide accounts for 20%, and sodium hydrosulfide accounts for 80%; based on the mass fraction of the coupling activator as 100%, cupric chloride accounts for 50%, and lead acetate accounts for 50%; based on the mass fraction of the composite collector as 100%, sodium isopentyl xanthate accounts for 60%, N-hydroxybenzamide accounts for 25%, and dodecyltrimethylammonium chloride accounts for 15%;

[0040] like Figure 1 As shown, an activation flotation method for carbonate-type copper oxide ore, the specific steps are as follows:

[0041] (1) crushing and grinding the carbonate-type copper oxide ore until more than 88% of the copper oxide mineral monomers are dissociated, and adjusting the slurry to a slurry mass percentage concentration of 32%; wherein the mass percentage content of copper in the carbonate-type copper oxide ore is 1.3%;

[0042] (2) adding a composite regulator, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the slurry obtained in step (1), and performing a roughing operation to obtain a roughing concentrate and a roughing tailing; per ton of carbonate copper oxide ore, 900 g of the composite regulator, 1800 g of the composite sulfiding agent, 400 g of the coupling activator, 600 g of the composite collector and 50 g of the frother are added to the slurry of the roughing operation;

[0043] (3) adding a composite regulator, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the primary roughing tailings obtained in step (2), and performing a secondary roughing operation to obtain a secondary roughing concentrate and a secondary roughing tailings; per ton of carbonate-type copper oxide ore, 450 g of the composite regulator, 900 g of the composite sulfiding agent, 200 g of the coupling activator, 300 g of the composite collector and 25 g of the frother are added to the slurry of the secondary roughing operation;

[0044] (4) adding a composite regulator, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the secondary roughing tailings obtained in step (3), and performing a first scavenging operation to obtain a first scavenging concentrate and a first scavenging tailings; the first scavenging concentrate is returned for slurry adjustment and incorporated into the secondary roughing operation; the composite collector is added to the first scavenging tailings for a second scavenging operation to obtain a second scavenging concentrate and a flotation tailings, and the second scavenging concentrate is returned for slurry adjustment and incorporated into the first scavenging operation; per ton of carbonate-type copper oxide ore, 225 g of the composite regulator, 450 g of the composite sulfiding agent, 100 g of the coupling activator, 150 g of the composite collector and 13 g of the frother are added to the slurry of the first scavenging operation; and 75 g of the composite collector is added to the slurry of the secondary scavenging operation;

[0045] (5) The primary roughing concentrate obtained in step (2) and the secondary roughing concentrate obtained in step (3) are combined, and a composite adjusting agent is added to perform a primary concentration operation to obtain a primary concentration concentrate and a primary concentration tailings; the primary concentration tailings are returned for slurry adjustment and incorporated into the primary roughing operation; the composite adjusting agent is added to the primary concentration concentrate for a secondary concentration operation to obtain a flotation copper concentrate and a secondary concentration tailings, and the secondary concentration tailings are returned for slurry adjustment and incorporated into the primary concentration operation; per ton of carbonate-type copper oxide ore, 150 g of the composite adjusting agent is added to the slurry of the primary concentration operation; and 75 g of the composite adjusting agent is added to the slurry of the secondary concentration operation;

[0046] The flotation recovery rate of copper in this example is 87.7%.

[0047] Example 3: In this example, based on the mass fraction of the composite regulator as 100%, phytic acid accounts for 25%, sodium lignin sulfonate accounts for 30%, and oxalic acid accounts for 45%; based on the mass fraction of the composite vulcanizing agent as 100%, thioacetamide accounts for 25%, and sodium hydrosulfide accounts for 75%; based on the mass fraction of the coupling activator as 100%, cupric chloride accounts for 55%, and lead acetate accounts for 45%; based on the mass fraction of the composite collector as 100%, sodium isopentyl xanthate accounts for 65%, N-hydroxybenzamide accounts for 30%, and dodecyltrimethylammonium chloride accounts for 5%;

[0048] like Figure 1 As shown, an activation flotation method for carbonate-type copper oxide ore, the specific steps are as follows:

[0049] (1) crushing and grinding the carbonate-type copper oxide ore until more than 88% of the copper oxide mineral monomers are dissociated, and adjusting the slurry to a slurry mass percentage concentration of 36%; wherein the mass percentage content of copper in the carbonate-type copper oxide ore is 1.8%;

[0050] (2) adding a composite regulator, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the slurry obtained in step (1), and performing a roughing operation to obtain a roughing concentrate and a roughing tailing; per ton of carbonate copper oxide ore, 1200 g of the composite regulator, 2400 g of the composite sulfiding agent, 500 g of the coupling activator, 800 g of the composite collector and 60 g of the frother are added to the slurry of the roughing operation;

[0051] (3) adding a composite regulator, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the primary roughing tailings obtained in step (2), and performing a secondary roughing operation to obtain a secondary roughing concentrate and a secondary roughing tailings; per ton of carbonate-type copper oxide ore, 600 g of the composite regulator, 1200 g of the composite sulfiding agent, 250 g of the coupling activator, 400 g of the composite collector and 30 g of the frother are added to the slurry of the secondary roughing operation;

[0052] (4) adding a composite regulator, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the secondary roughing tailings obtained in step (3), and performing a first scavenging operation to obtain a first scavenging concentrate and a first scavenging tailings; the first scavenging concentrate is returned to the slurry for slurry adjustment and incorporated into the secondary roughing operation; adding a composite collector to the first scavenging tailings to perform a second scavenging operation to obtain a second scavenging concentrate and a flotation tailings, and the second scavenging concentrate is returned to the slurry for slurry adjustment and incorporated into the first scavenging operation; per ton of carbonate-type copper oxide ore, 300 g of the composite regulator, 600 g of the composite sulfiding agent, 125 g of the coupling activator, 200 g of the composite collector and 15 g of the frother are added to the slurry of the first scavenging operation; and 100 g of the composite collector is added to the slurry of the secondary scavenging operation;

[0053] (5) combining the primary roughing concentrate obtained in step (2) and the secondary roughing concentrate obtained in step (3), adding a composite adjusting agent to perform a primary concentration operation to obtain a primary concentrated concentrate and a primary concentrated tailings; returning the primary concentrated tailings to the primary roughing operation for slurry adjustment; adding a composite adjusting agent to the primary concentrated concentrate for a secondary concentration operation to obtain a flotation copper concentrate and a secondary concentrated tailings; returning the secondary concentrated tailings to the primary concentration operation for slurry adjustment; based on each ton of carbonate-type copper oxide ore, 200 g of the composite adjusting agent is added to the slurry of the primary concentration operation; and 100 g of the composite adjusting agent is added to the slurry of the secondary concentration operation;

[0054] The flotation recovery rate of copper in this example is 88.9%.

[0055] The specific implementation modes of the present invention are described in detail above, but the present invention is not limited to the above implementation modes, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. An activated flotation method for carbonate-type copper oxide ore, characterized in that: The specific steps are as follows: (1) crushing and grinding the carbonate-type copper oxide ore until more than 88% of the copper oxide mineral monomers are dissociated, and slurrying to a slurry mass concentration of 28-36%; (2) adding a composite adjusting agent, a composite sulfiding agent, a coupling activator, a composite collecting agent and a frother in sequence to the ore pulp obtained in step (1), and performing a primary roughing operation to obtain a primary roughing concentrate and a primary roughing tailings; (3) adding a composite adjusting agent, a composite vulcanizing agent, a coupling activator, a composite collecting agent and a frother in sequence to the primary roughing tailings obtained in step (2), and performing a secondary roughing operation to obtain a secondary roughing concentrate and a secondary roughing tailings; (4) adding a composite adjusting agent, a composite sulfiding agent, a coupling activator, a composite collector and a frother in sequence to the secondary roughing tailings obtained in step (3), and performing a first scavenging operation to obtain a first scavenging concentrate and a first scavenging tailings; the first scavenging concentrate is returned to the slurry for slurry adjustment and incorporated into the secondary roughing operation; adding a composite collector to the first scavenging tailings to perform a second scavenging operation to obtain a second scavenging concentrate and flotation tailings, and the second scavenging concentrate is returned to the slurry for slurry adjustment and incorporated into the first scavenging operation; (5) combining the primary roughing concentrate obtained in step (2) and the secondary roughing concentrate obtained in step (3), adding a composite adjusting agent to perform a primary concentration operation to obtain a primary concentrated concentrate and a primary concentrated tailings; returning the primary concentrated tailings to the slurry for incorporation into the primary roughing operation; adding a composite adjusting agent to the primary concentrated concentrate to perform a secondary concentration operation to obtain a flotation copper concentrate and a secondary concentrated tailings; returning the secondary concentrated tailings to the slurry for incorporation into the primary concentration operation; The composite regulator is a mixture of phytic acid, sodium lignin sulfonate and oxalic acid, the composite vulcanizing agent is a mixture of thioacetamide and sodium hydrosulfide, the coupling activator is a mixture of cupric chloride and lead acetate, and the composite collector is a mixture of sodium isopentyl xanthate, N-hydroxybenzamide and dodecyltrimethylammonium chloride.

2. The activated flotation method of carbonate-type copper oxide ore according to claim 1, characterized in that: Step (1) The mass percentage content of copper in the carbonate-type copper oxide ore is 0.8-1.8%.

3. The activated flotation method of carbonate-type copper oxide ore according to claim 1, characterized in that: Based on each ton of carbonate copper oxide ore, 600-1200 g of a composite adjusting agent, 1200-2400 g of a composite sulfiding agent, 300-500 g of a coupling activator, 400-800 g of a composite collector and 40-60 g of a foaming agent are added to the ore pulp of the primary roughing operation in step (2).

4. The activated flotation method of carbonate-type copper oxide ore according to claim 1, characterized in that: Based on each ton of carbonate copper oxide ore, 300-600 g of a composite adjusting agent, 600-1200 g of a composite sulfiding agent, 150-250 g of a coupling activator, 200-400 g of a composite collector and 20-30 g of a foaming agent are added to the ore pulp of the secondary roughing operation in step (3).

5. The activated flotation method of carbonate-type copper oxide ore according to claim 1, characterized in that: Based on each ton of carbonate copper oxide ore, 150-300 g of a composite regulator, 300-600 g of a composite sulfidizer, 75-125 g of a coupling activator, 100-200 g of a composite collector and 10-15 g of a foaming agent are added to the slurry of the primary scavenging operation in step (4); and 50-100 g of a composite collector is added to the slurry of the secondary scavenging operation.

6. The activated flotation method of carbonate-type copper oxide ore according to claim 1, characterized in that: Based on each ton of carbonate copper oxide ore, 100-200 g of the composite regulator is added to the slurry of the primary concentration operation in step (5); and 50-100 g of the composite regulator is added to the slurry of the secondary concentration operation.

7. The activated flotation method of carbonate-type copper oxide ore according to claim 1, characterized in that: Taking the mass fraction of the composite regulator as 100%, phytic acid accounts for 15-25%, sodium lignin sulfonate accounts for 25-35%, and oxalic acid accounts for 45-55%; taking the mass fraction of the composite vulcanizing agent as 100%, thioacetamide accounts for 15-25%, and sodium hydrosulfide accounts for 75-85%; taking the mass fraction of the coupling activator as 100%, cupric chloride accounts for 45-55%, and lead acetate accounts for 45-55%; taking the mass fraction of the composite collector as 100%, sodium isopentyl xanthate accounts for 55-65%, N-hydroxybenzamide accounts for 25-35%, and dodecyltrimethylammonium chloride accounts for 5-15%.

8. The activated flotation method of carbonate-type copper oxide ore according to claim 1, characterized in that: The foaming agent is pine oil.

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