A flotation method for recovering copper oxide ore in all particle sizes

Abstract

The present invention relates to a flotation method for recovering copper oxide ore in full particle size, belonging to the field of mineral processing technology. The present invention adopts a composite grinding aid to reduce the surface hardness and compressive strength of copper oxide ore particles, weaken the agglomeration between ore particles and their adhesion to the mill liner and grinding medium, and improve the grinding performance, dispersion behavior and particle size composition of the ore; the composite adjuster achieves selective activation of copper oxide minerals and selective inhibition of gangue minerals in the ore by regulating the slurry environment and mineral surface characteristics; the composite collector can achieve selective enhancement of the surface hydrophobicity of copper oxide minerals of different particle sizes, improve the ore loading effect of the foam and the sorting property of the ore; the newly added fine sweeping operation avoids the repeated circulation and accumulation of copper-containing middlings in the roughing and concentrating operations, effectively eliminating their adverse effects on flotation indicators. The present invention achieves full-size flotation recovery of difficult-to-treat copper oxide ore through integrated control of the entire process of grinding, slurry adjustment, collection, and middling circulation.

Description

Technical Field

[0001] The invention relates to a flotation method for recovering copper oxide ore in all particle sizes, belonging to the technical field of mineral processing. Background Art

[0002] Flotation is the main method for separating and enriching copper oxide ores. However, due to the strong hydrophilicity of the surface of copper oxide minerals, the high content of soluble salts in the ore, and the complex mosaic relationship with gangue minerals, it is difficult to recover them efficiently using conventional mineral processing methods.

[0003] The particle size of copper oxide ore in the flotation process has a great influence on its recovery index, so the control of the grinding process of copper oxide ore is very important. During the grinding process of copper oxide ore, as the ore particles are refined, their surface area gradually increases, and the surface of the ore particles is charged due to bond breaking. The ore particles adsorb each other and agglomerate, which reduces the grinding efficiency. Therefore, adding a certain amount of grinding aid during the grinding process can not only prevent the ore particles from agglomerating, but also improve the fluidity of the ore during the grinding process, thereby improving the grinding efficiency, shortening the grinding time, reducing the grinding energy consumption, optimizing the ore particle size composition, and reducing the degree of ore mudification. In addition, the properties of copper oxide ore are complex, and it is difficult to effectively recover copper minerals of various particle sizes using conventional flotation reagents, especially fine-grained copper oxide minerals. It is often necessary to use efficient regulators and collectors to selectively control the slurry environment and mineral surface properties, so as to achieve effective separation and enrichment of copper oxide minerals and gangue minerals.

[0004] However, the existing grinding aids, regulators and collectors are not very applicable to the flotation process of copper oxide ores, resulting in unsatisfactory flotation recovery of copper oxide minerals, which seriously affects the efficient utilization of copper mine resources and the economic benefits of enterprises.

[0005] Therefore, it is urgent to develop a mineral processing method that integrates grinding, slurry preparation and collection to achieve full-size flotation recovery of difficult-to-treat copper oxide ores. Summary of the Invention

[0006] In response to the problems that copper oxide minerals of different particle sizes have large differences in selectivity and are difficult to recover simultaneously, which seriously affects the efficient utilization of copper ore resources, the present invention proposes a flotation method for recovering copper oxide ore of all particle sizes. A composite grinding aid is used to improve the grinding performance, dispersion behavior and particle size composition of the ore. A composite regulator is used to selectively activate copper oxide minerals and selectively inhibit gangue minerals in the ore. A composite collector is used to enhance the ore-carrying effect of the foam and the sorting property of the ore. At the same time, a new fine sweeping operation is added to avoid repeated circulation and accumulation of copper-containing middlings in roughing and concentrating operations, effectively eliminating their adverse effects on flotation indicators.

[0007] A flotation method for recovering copper oxide ore in full particle size, comprising the following steps:

[0008] (1) The copper oxide ore is mixed with a composite grinding aid, and then ground until the copper oxide ore monomers are dissociated, and water is added to adjust the slurry to a slurry mass concentration of 28-38% to obtain a copper oxide slurry;

[0009] (2) adding a composite adjusting agent, a composite collecting agent and a foaming agent to the slurry obtained in step (1) in sequence, and performing a roughing operation to obtain a roughing concentrate and a roughing tailing;

[0010] (3) adding a composite adjusting agent, a composite collecting agent and a foaming agent to the primary roughing tailings obtained in step (2) in sequence, and performing a secondary roughing operation to obtain a secondary roughing concentrate and a secondary roughing tailings;

[0011] (4) adding a composite adjusting agent, a composite collecting agent and a foaming agent to the secondary roughing tailings obtained in step (3) in sequence, and performing scavenging operations to obtain scavenged concentrate and scavenged tailings;

[0012] (5) combining the primary roughing concentrate obtained in step (2) and the secondary roughing concentrate obtained in step (3), adding a composite adjusting agent and a composite collecting agent, and performing a primary concentrating operation to obtain a primary concentrating concentrate and a primary concentrating tailings;

[0013] (6) The primary concentrate obtained in step (5) is subjected to secondary concentration operation to obtain copper concentrate I and secondary concentration tailings;

[0014] (7) The scavenging concentrate obtained in step (4), the primary concentrated tailings obtained in step (5), and the secondary concentrated tailings obtained in step (6) are combined to form a mixed middling, a composite regulator and a composite collector are sequentially added to the mixed middling, and a fine scavenging operation is performed to obtain copper concentrate II and fine scavenging tailings, wherein the fine scavenging tailings are returned and incorporated into the scavenging operation;

[0015] (8) The copper concentrate I obtained in step (6) and the copper concentrate II obtained in step (7) are combined to obtain copper concentrate, and the scavenging tailings obtained in step (4) are copper tailings;

[0016] The composite grinding aid is a mixture of triethanolamine, diethylene glycol and polyether alcohol amine; the composite adjusting agent is a mixture of sodium sulfide, ammonium phosphate, carboxymethyl cellulose and phosphonocarboxylic acid copolymer; and the composite collecting agent is a mixture of sodium isopentyl dithiocarbonate, sodium diisopropyl dithiophosphate and octyl hydroxamic acid.

[0017] Preferably, the mass percentage content of copper in the copper oxide ore in step (1) is 0.7-1.9%.

[0018] Preferably, the amount of the composite grinding aid added in step (1) is 260-540 g per ton of copper oxide ore.

[0019] Preferably, per ton of copper oxide ore, 1800-2600 g of composite regulator, 520-840 g of composite collector and 40-80 g of foaming agent are added to the ore pulp of the primary roughing operation in step (2).

[0020] Preferably, per ton of copper oxide ore, 900-1300 g of composite regulator, 260-420 g of composite collector and 20-40 g of foaming agent are added to the slurry of the secondary roughing operation in step (3).

[0021] Preferably, per ton of copper oxide ore, 450-650 g of composite regulator, 130-210 g of composite collector and 10-20 g of foaming agent are added to the slurry of the scavenging operation in step (4).

[0022] Preferably, per ton of copper oxide ore, 225-325 g of the composite regulator and 65-105 g of the composite collector are added to the slurry of the primary concentration operation in step (5).

[0023] Preferably, per ton of copper oxide ore, 600-860 g of the composite regulator and 100-160 g of the composite collector are added to the slurry of the fine sweeping operation in step (7).

[0024] Preferably, based on the mass fraction of the composite grinding aid being 100%, triethanolamine accounts for 50-60%, diethylene glycol accounts for 30-40%, and polyetherolamine accounts for 5-15%;

[0025] Based on the mass fraction of the composite regulator being 100%, sodium sulfide accounts for 45-55%, ammonium phosphate accounts for 20-30%, carboxymethyl cellulose accounts for 10-20%, and phosphonocarboxylic acid copolymer accounts for 5-15%;

[0026] Taking the mass fraction of the composite collector as 100%, sodium isopentyl dithiocarbonate accounts for 40-60%, sodium diisopropyl dithiophosphate accounts for 20-40%, and octyl hydroxamic acid accounts for 10-30%.

[0027] Preferably, the foaming agent is pine oil.

[0028] The beneficial effects of the present invention are:

[0029] (1) The present invention fully utilizes the synergistic effect of flotation reagents through integrated control of the entire process of grinding, slurry adjustment, capture, and middling circulation, selectively controls the slurry environment and mineral surface characteristics, and economically and efficiently solves the problem of large differences in selectivity and difficulty in synchronous recovery of copper oxide minerals of different particle sizes in the ore, thus opening up a new path for the efficient separation and enrichment of complex and difficult-to-process copper ore resources;

[0030] (2) The present invention adds a composite grinding aid during the ore grinding process to effectively reduce the surface energy of the ore particles, reduce the surface hardness and compressive strength of the copper oxide ore particles, weaken the agglomeration of the ore particles and their adhesion to the mill liner and grinding medium, improve the grinding performance, dispersion behavior and particle size composition of the ore, thereby improving the grinding efficiency of the copper oxide ore and preventing severe mudification of the ore;

[0031] (3) The combined use of the composite regulator and the composite collector of the present invention can not only achieve the selective activation of copper oxide minerals and the selective inhibition of gangue minerals in the ore, but also achieve the selective enhancement of the surface hydrophobicity of copper oxide minerals of different particle sizes, enhance the difference in floatability between copper oxide minerals and gangue minerals, improve the ore-carrying effect of the foam and the sorting property of the ore, and promote the flotation recovery of all particle sizes of difficult-to-treat copper oxide ores;

[0032] (4) The present invention adds a fine scavenging operation in the flotation process of copper oxide ore to centrally process the middlings produced by the concentrating and scavenging operations, so that they do not return to the roughing and concentrating operations. This can avoid the repeated circulation and accumulation of copper-containing middlings and fine mud in the roughing and concentrating operations, effectively eliminate their adverse effects on flotation indicators, solve the problems of bubble control and mud suppression in the flotation process of copper oxide ore, and greatly improve the utilization rate of copper ore resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a process flow chart of the present invention. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with specific embodiments, but the protection scope of the present invention is not limited to the contents described above.

[0035] In the following examples of the present invention, the composite grinding aid is a mixture of triethanolamine, diethylene glycol and polyetherolamine, the composite adjusting agent is a mixture of sodium sulfide, ammonium phosphate, carboxymethyl cellulose and phosphonocarboxylic acid copolymer, and the composite collecting agent is a mixture of sodium isopentyl dithiocarbonate, sodium diisopropyl dithiophosphate and octyl hydroxamic acid.

[0036] Example 1: In this example, based on the mass fraction of the composite grinding aid as 100%, triethanolamine accounts for 50%, diethylene glycol accounts for 35%, and polyether alcoholamine accounts for 15%; based on the mass fraction of the composite adjusting agent as 100%, sodium sulfide accounts for 45%, ammonium phosphate accounts for 25%, carboxymethyl cellulose accounts for 20%, and phosphonocarboxylic acid copolymer accounts for 10%; based on the mass fraction of the composite collector as 100%, sodium isopentyl dithiocarbonate accounts for 40%, sodium diisopropyl dithiophosphate accounts for 40%, and octyl hydroxamic acid accounts for 20%;

[0037] like Figure 1 As shown in FIG, a flotation method for recovering copper oxide ore in all particle sizes, the specific steps are as follows:

[0038] (1) The copper oxide ore and the composite grinding aid are mixed, and then added to a mill and ground until the copper oxide ore monomers are dissociated, and water is added to adjust the slurry to a mass percentage concentration of 28% to obtain a copper oxide slurry; 260g of the composite grinding aid is added to the mill per ton of copper oxide ore; wherein the mass percentage content of copper in the copper oxide ore is 0.7%;

[0039] (2) A composite regulator, a composite collector and a foaming agent are sequentially added to the slurry obtained in step (1), and a roughing operation is performed to obtain a roughing concentrate and a roughing tailing; per ton of copper oxide ore, 1800 g of the composite regulator, 520 g of the composite collector and 40 g of the foaming agent are added to the slurry of the roughing operation;

[0040] (3) A composite regulator, a composite collector and a foaming agent are sequentially added to the primary roughing tailings obtained in step (2), and a secondary roughing operation is performed to obtain a secondary roughing concentrate and a secondary roughing tailings; per ton of copper oxide ore, 900 g of the composite regulator, 260 g of the composite collector and 20 g of the foaming agent are added to the slurry of the secondary roughing operation;

[0041] (4) A composite regulator, a composite collector and a foaming agent are sequentially added to the secondary roughing tailings obtained in step (3), and a scavenging operation is performed to obtain scavenged concentrate and scavenged tailings; per ton of copper oxide ore, 450 g of the composite regulator, 130 g of the composite collector and 10 g of the foaming agent are added to the slurry of the scavenging operation;

[0042] (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 and a composite collecting agent are added to perform a primary concentrating operation to obtain a primary concentrating concentrate and a primary concentrating tailings; per ton of copper oxide ore, 225 g of the composite adjusting agent and 65 g of the composite collecting agent are added to the slurry of the primary concentrating operation;

[0043] (6) The primary concentrate obtained in step (5) is subjected to secondary concentration operation to obtain copper concentrate I and secondary concentration tailings;

[0044] (7) The scavenging concentrate obtained in step (4), the primary concentrated tailings obtained in step (5), and the secondary concentrated tailings obtained in step (6) are combined to form a mixed middling, a composite regulator and a composite collector are sequentially added to the mixed middling, and a fine scavenging operation is performed to obtain copper concentrate II and fine scavenging tailings, wherein the fine scavenging tailings are returned and incorporated into the scavenging operation; per ton of copper oxide ore, 600 g of the composite regulator and 100 g of the composite collector are added to the slurry of the fine scavenging operation;

[0045] (8) The copper concentrate I obtained in step (6) and the copper concentrate II obtained in step (7) are combined to obtain copper concentrate, and the scavenging tailings obtained in step (4) are copper tailings;

[0046] The flotation recovery rate of copper in this embodiment is 81.8%.

[0047] Example 2: In this example, based on the mass fraction of the composite grinding aid as 100%, triethanolamine accounts for 55%, diethylene glycol accounts for 40%, and polyetherolamine accounts for 5%; based on the mass fraction of the composite adjusting agent as 100%, sodium sulfide accounts for 50%, ammonium phosphate accounts for 30%, carboxymethyl cellulose accounts for 15%, and phosphonocarboxylic acid copolymer accounts for 5%; based on the mass fraction of the composite collector as 100%, sodium isopentyl dithiocarbonate accounts for 50%, sodium diisopropyl dithiophosphate accounts for 20%, and octyl hydroxamic acid accounts for 30%;

[0048] like Figure 1 As shown in FIG, a flotation method for recovering copper oxide ore in all particle sizes, the specific steps are as follows:

[0049] (1) The copper oxide ore and the composite grinding aid are mixed, and then added to a mill and ground until the copper oxide ore monomers are dissociated, and water is added to adjust the slurry to a mass percentage concentration of 33% to obtain a copper oxide slurry; 400g of the composite grinding aid is added to the mill per ton of copper oxide ore; wherein the mass percentage content of copper in the copper oxide ore is 1.3%;

[0050] (2) A composite regulator, a composite collector and a foaming agent are sequentially added to the slurry obtained in step (1), and a roughing operation is performed to obtain a roughing concentrate and a roughing tailing; per ton of copper oxide ore, 2200 g of the composite regulator, 680 g of the composite collector and 60 g of the foaming agent are added to the slurry of the roughing operation;

[0051] (3) A composite regulator, a composite collector and a foaming agent are sequentially added to the primary roughing tailings obtained in step (2), and a secondary roughing operation is performed to obtain a secondary roughing concentrate and a secondary roughing tailings; per ton of copper oxide ore, 1100 g of the composite regulator, 340 g of the composite collector and 30 g of the foaming agent are added to the slurry of the secondary roughing operation;

[0052] (4) A composite regulator, a composite collector, and a foaming agent are sequentially added to the secondary roughing tailings obtained in step (3), and a scavenging operation is performed to obtain scavenged concentrate and scavenged tailings; per ton of copper oxide ore, 550 g of the composite regulator, 170 g of the composite collector, and 15 g of the foaming agent are added to the slurry of the scavenging operation;

[0053] (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 and a composite collecting agent are added to perform a primary concentrating operation to obtain a primary concentrating concentrate and a primary concentrating tailings; per ton of copper oxide ore, 275 g of the composite adjusting agent and 85 g of the composite collecting agent are added to the slurry of the primary concentrating operation;

[0054] (6) The primary concentrate obtained in step (5) is subjected to secondary concentration operation to obtain copper concentrate I and secondary concentration tailings;

[0055] (7) The scavenging concentrate obtained in step (4), the primary concentrated tailings obtained in step (5), and the secondary concentrated tailings obtained in step (6) are combined to form a mixed middling, a composite regulator and a composite collector are sequentially added to the mixed middling, and a fine scavenging operation is performed to obtain copper concentrate II and fine scavenging tailings, wherein the fine scavenging tailings are returned and incorporated into the scavenging operation; per ton of copper oxide ore, 730 g of the composite regulator and 130 g of the composite collector are added to the slurry of the fine scavenging operation;

[0056] (8) The copper concentrate I obtained in step (6) and the copper concentrate II obtained in step (7) are combined to obtain copper concentrate, and the scavenging tailings obtained in step (4) are copper tailings;

[0057] The flotation recovery rate of copper in this embodiment is 84.2%.

[0058] Example 3: In this example, based on the mass fraction of the composite grinding aid as 100%, triethanolamine accounts for 60%, diethylene glycol accounts for 30%, and polyetherolamine accounts for 10%; based on the mass fraction of the composite adjusting agent as 100%, sodium sulfide accounts for 55%, ammonium phosphate accounts for 20%, carboxymethyl cellulose accounts for 10%, and phosphonocarboxylic acid copolymer accounts for 15%; based on the mass fraction of the composite collector as 100%, sodium isopentyl dithiocarbonate accounts for 60%, sodium diisopropyl dithiophosphate accounts for 30%, and octyl hydroxamic acid accounts for 10%;

[0059] like Figure 1 As shown in FIG, a flotation method for recovering copper oxide ore in all particle sizes, the specific steps are as follows:

[0060] (1) The copper oxide ore and the composite grinding aid are mixed, and then added to a mill and ground until the copper oxide ore monomers are dissociated, and water is added to adjust the slurry to a mass percentage concentration of 38% to obtain a copper oxide slurry; 540g of the composite grinding aid is added to the mill per ton of copper oxide ore; wherein the mass percentage content of copper in the copper oxide ore is 1.9%;

[0061] (2) A composite regulator, a composite collector and a foaming agent are sequentially added to the slurry obtained in step (1), and a roughing operation is performed to obtain a primary roughing concentrate and a primary roughing tailings; per ton of copper oxide ore, 2600 g of the composite regulator, 840 g of the composite collector and 80 g of the foaming agent are added to the slurry of the primary roughing operation;

[0062] (3) A composite regulator, a composite collector and a foaming agent are sequentially added to the primary roughing tailings obtained in step (2), and a secondary roughing operation is performed to obtain a secondary roughing concentrate and a secondary roughing tailings; per ton of copper oxide ore, 1300 g of the composite regulator, 420 g of the composite collector and 40 g of the foaming agent are added to the slurry of the secondary roughing operation;

[0063] (4) A composite regulator, a composite collector, and a foaming agent are sequentially added to the secondary roughing tailings obtained in step (3), and a scavenging operation is performed to obtain scavenged concentrate and scavenged tailings; per ton of copper oxide ore, 650 g of the composite regulator, 210 g of the composite collector, and 20 g of the foaming agent are added to the slurry of the scavenging operation;

[0064] (5) The primary roughing concentrate obtained in step (2) and the secondary roughing concentrate obtained in step (3) are combined, and a composite regulator and a composite collector are added to perform a primary concentration operation to obtain a primary concentrated concentrate and a primary concentrated tailings; per ton of copper oxide ore, 325 g of the composite regulator and 105 g of the composite collector are added to the slurry of the primary concentration operation;

[0065] (6) The primary concentrate obtained in step (5) is subjected to secondary concentration operation to obtain copper concentrate I and secondary concentration tailings;

[0066] (7) The scavenging concentrate obtained in step (4), the primary concentrated tailings obtained in step (5), and the secondary concentrated tailings obtained in step (6) are combined to form a mixed middling, a composite regulator and a composite collector are sequentially added to the mixed middling, and a fine scavenging operation is performed to obtain copper concentrate II and fine scavenging tailings, wherein the fine scavenging tailings are returned and incorporated into the scavenging operation; per ton of copper oxide ore, 860 g of the composite regulator and 160 g of the composite collector are added to the slurry of the fine scavenging operation;

[0067] (8) The copper concentrate I obtained in step (6) and the copper concentrate II obtained in step (7) are combined to obtain copper concentrate, and the scavenging tailings obtained in step (4) are copper tailings;

[0068] The flotation recovery rate of copper in this embodiment is 86.3%.

[0069] The above describes the specific embodiments of the present invention in detail, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the scope of the present invention.

Claims

1. A flotation method for recovering copper oxide ore in all particle sizes, characterized in that: The specific steps are as follows: (1) The copper oxide ore is mixed with a composite grinding aid, and then ground until the copper oxide ore monomers are dissociated, and water is added to adjust the slurry to a slurry mass concentration of 28-38% to obtain a copper oxide slurry; (2) adding a composite adjusting agent, a composite collecting agent and a foaming agent to the slurry obtained in step (1) in sequence, and performing a roughing operation to obtain a roughing concentrate and a roughing tailing; (3) adding a composite adjusting agent, a composite collecting agent and a foaming agent to the primary roughing tailings obtained in step (2) in sequence, 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 collecting agent and a foaming agent to the secondary roughing tailings obtained in step (3) in sequence, and performing scavenging operations to obtain scavenged concentrate and scavenged tailings; (5) combining the primary roughing concentrate obtained in step (2) and the secondary roughing concentrate obtained in step (3), adding a composite adjusting agent and a composite collecting agent, and performing a primary concentrating operation to obtain a primary concentrating concentrate and a primary concentrating tailings; (6) The primary concentrate obtained in step (5) is subjected to secondary concentration operation to obtain copper concentrate I and secondary concentration tailings; (7) The scavenging concentrate obtained in step (4), the primary concentrated tailings obtained in step (5), and the secondary concentrated tailings obtained in step (6) are combined to form a mixed middling, a composite regulator and a composite collector are sequentially added to the mixed middling, and a fine scavenging operation is performed to obtain copper concentrate II and fine scavenging tailings, wherein the fine scavenging tailings are returned and incorporated into the scavenging operation; (8) The copper concentrate I obtained in step (6) and the copper concentrate II obtained in step (7) are combined to obtain copper concentrate, and the scavenging tailings obtained in step (4) are copper tailings; The composite grinding aid is a mixture of triethanolamine, diethylene glycol and polyether alcohol amine; the composite adjusting agent is a mixture of sodium sulfide, ammonium phosphate, carboxymethyl cellulose and phosphonocarboxylic acid copolymer; and the composite collecting agent is a mixture of sodium isopentyl dithiocarbonate, sodium diisopropyl dithiophosphate and octyl hydroxamic acid.

2. The flotation method for recovering copper oxide ore according to claim 1, wherein: The copper content in the copper oxide ore in step (1) is 0.7-1.9% by mass.

3. The flotation method for recovering copper oxide ore according to claim 1, wherein: The amount of the composite grinding aid added in step (1) is 260-540 g per ton of copper oxide ore.

4. The flotation method for recovering copper oxide ore in full particle size according to claim 1, wherein: Calculated per ton of copper oxide ore, 1800-2600 g of composite adjusting agent, 520-840 g of composite collecting agent and 40-80 g of foaming agent are added to the ore pulp of the primary roughing operation in step (2).

5. The flotation method for recovering copper oxide ore in full particle size according to claim 1, wherein: Calculated per ton of copper oxide ore, 900-1300 g of composite regulator, 260-420 g of composite collector and 20-40 g of foaming agent are added to the slurry of the secondary roughing operation in step (3).

6. The flotation method for recovering copper oxide ore in full particle size according to claim 1, wherein: Calculated per ton of copper oxide ore, 450-650 g of composite adjusting agent, 130-210 g of composite collecting agent and 10-20 g of foaming agent are added to the ore pulp of step (4) scavenging operation.

7. The flotation method for recovering copper oxide ore in full particle size according to claim 1, wherein: Calculated per ton of copper oxide ore, 225-325 g of composite regulator and 65-105 g of composite collector are added to the slurry of the primary concentration operation in step (5).

8. The flotation method for recovering copper oxide ore in full particle size according to claim 1, wherein: Based on each ton of copper oxide ore, 600-860 g of composite adjusting agent and 100-160 g of composite collecting agent are added to the ore pulp in the fine sweeping operation of step (7).

9. The flotation method for recovering copper oxide ore in full particle size according to claim 1, wherein: Taking the mass fraction of the composite grinding aid as 100%, triethanolamine accounts for 50-60%, diethylene glycol accounts for 30-40%, and polyether alcohol amine accounts for 5-15%; Based on the mass fraction of the composite regulator being 100%, sodium sulfide accounts for 45-55%, ammonium phosphate accounts for 20-30%, carboxymethyl cellulose accounts for 10-20%, and phosphonocarboxylic acid copolymer accounts for 5-15%; Taking the mass fraction of the composite collector as 100%, sodium isopentyl dithiocarbonate accounts for 40-60%, sodium diisopropyl dithiophosphate accounts for 20-40%, and octyl hydroxamic acid accounts for 10-30%.

10. The flotation method for recovering copper oxide ore in full particle size according to claim 1, characterized in that: The foaming agent is pine oil.

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