Activation method of silicon malachite mineral and flotation method of high-alkalinity copper oxide ore or copper cobalt oxide ore

Abstract

The invention discloses an activation method of silicon malachite minerals and a flotation method of high-alkalinity copper oxide ore or copper cobalt oxide ore, and belongs to the technical field of ore dressing. According to the method, crystalline phase transformation and site reconstruction are carried out on the surface of the silicon malachite, so that the surface of the silicon malachite is activated to enhance the flotation separation effect of the silicon malachite, and the problem that the silicon malachite is difficult to float and recover due to high surface hydrophilicity is solved. The method for activating the silicon malachite can also be used for flotation of complex high-alkalinity copper oxide (or copper-cobalt) ore, the high-alkalinity copper oxide (or copper-cobalt) ore is treated through the positive and negative combined flotation process, and the purposes that the recovery rate of copper and cobalt in the high-alkalinity copper oxide (or copper-cobalt) ore is larger than 90%, and the removal rate of calcium and magnesium is larger than 70% can be achieved. Compared with an existing copper oxide (copper-cobalt ore) flotation process, the method has the advantages of being simple in process, high in adaptability, small in toxicity, low in cost, high in economic benefit and easy to industrially popularize and apply.

Description

Technical Field

[0001] The invention relates to an activation method of chrysocolla mineral and also to a flotation method of high alkaline copper oxide (or copper-cobalt) ore, belonging to the technical field of ore dressing. Background Art

[0002] Copper and cobalt are important strategic mineral resources and important basic raw materials for national economic and social development. They are widely used in defense, electricity, communications, construction, transportation and other fields. With the rapid development of the economy, my country has become the world's largest consumer of copper and cobalt, and the demand for copper and cobalt is also increasing. Nowadays, with the exploitation and utilization of resources, copper sulfide ores and easy-to-select oxidized copper-cobalt ores are decreasing, and complex and difficult-to-select oxidized copper-cobalt ores are gradually being mined and utilized. Due to the high oxidation rate of this type of ore, the high content of alkaline calcium-magnesium gangue minerals, and the complex structure, it is difficult to separate and enrich with traditional flotation technology. Due to the high cost and high pollution, it is not suitable for direct wet leaching. Therefore, it is particularly urgent to research and develop new flotation technologies and processes for difficult-to-treat complex high-alkalinity oxidized copper-cobalt ore resources, which is of great significance to the efficient utilization of strategic mineral resources.

[0003] In the complex high alkalinity copper oxide or copper-cobalt oxide ore, the Chinese patent (publication number: CN119034949A) discloses an application of ammonium fluoride as an activator and alkylamide as a collector in the flotation of copper oxide ore and a flotation method, specifically disclosing the use of ammonium fluoride to activate chrysocolla, and hexylamide and copper ions to produce a two-tooth chelating collector to improve the grade and recovery rate of chrysocolla, but this method has high requirements for equipment and is highly toxic. The Chinese patent (publication number: CN113909154B) discloses a beneficiation method for copper oxide ore containing malachite and chrysocolla. According to the difference between the characteristic color of malachite and chrysocolla and the color of the gangue, the method adopts the method of "ore crushing-ultrasonic washing-grading-color sorting rough selection-color sorting fine selection-color sorting" for beneficiation, which can obtain high-grade color sorting concentrate products and tailings, but the production cost of this method is high and it is difficult to apply on an industrial scale. A Chinese patent (publication number: CN118186209A) discloses a combined leaching method for copper-cobalt oxide ores with high acid consumption and easy bubbling. The method is to add concentrated sulfuric acid and high-copper raffinate for pre-leaching, and then add concentrated sulfuric acid for leaching, but the cost of this method is relatively high. A Chinese patent (publication number: CN109201312A) discloses a beneficiation and smelting method for copper-cobalt oxide ores containing easily floating gangue. The method introduces easily floating gangue collectors and inhibitors to separate gangue minerals from useful minerals, but the process flow of this method is complicated. A Chinese patent (publication number: CN118807990A) discloses a flotation method for high-calcium-magnesium copper-cobalt oxide ores. The method introduces a combination of xanthate and salicylic hydroxamic acid collectors. Although good indicators are obtained, the cost of the reagents is relatively high, and the separation of useful minerals from gangue minerals is limited. Summary of the invention

[0004] In order to solve the problems existing in the prior art, such as difficulty in flotation of malachite in complex high-alkalinity copper oxide (or copper-cobalt) ores, low copper-cobalt recovery rate, high production cost and high leaching acid consumption.

[0005] The first object of the present invention is to provide a method for activating chrysocolla mineral, which introduces an activator to transform the crystal phase and reconstruct the site of the chrysocolla surface, so that more copper active sites are exposed on the surface of the chrysocolla, enhances the adsorption of the collector on the surface of the chrysocolla, and realizes the effective flotation of the chrysocolla in a green, low-dosage and low-cost manner.

[0006] The second object of the present invention is to provide a flotation method for high alkaline copper oxide ore or copper cobalt oxide ore, which adopts the process of "positive and negative combined flotation" to treat high alkaline copper oxide (or copper cobalt) ore, so as to achieve the purpose that the recovery rate of copper and cobalt in the high alkaline copper oxide (or copper cobalt) ore is greater than 90%, and the removal rate of calcium and magnesium is greater than 70%.

[0007] In order to achieve the above technical objectives, the present invention provides a method for activating chrysocolla mineral, which comprises grinding and slurrying the chrysocolla ore to obtain slurry, adding water-soluble copper salt and water-soluble carbonate to the slurry for activation, and then entering the flotation process.

[0008] The key to the technical solution of the present invention is to use water-soluble copper salts and water-soluble carbonates to transform the crystal phase and reconstruct the sites of the chrysocolla surface, so that more copper active sites are exposed on the surface of the chrysocolla, which is more conducive to improving its flotation performance. Since the surface of chrysocolla is highly hydrophilic and very few copper active sites are exposed, the collector adsorption can only be completed in the pores on the surface of the chrysocolla, and the adsorption is also very weak, resulting in difficulty in its flotation and a large consumption of flotation reagents. The technical solution of the present invention is based on the geochemical mineralization principle. From the perspective of mineral crystal structure and physicochemical properties, water-soluble copper salts and water-soluble carbonates are introduced to provide copper ions and carbonate ions respectively, and copper carbonate precipitates are generated in the flotation solution and adhere to the surface of siliceous malachite. The Cu²⁺ ions have a strong coordination ability and react with the hydroxyl compounds on the surface of siliceous malachite to produce a more stable basic copper carbonate complex, so that the siliceous malachite undergoes a crystal phase transformation similar to that of malachite, exposing more copper active sites on the surface, so that the collector is firmly adsorbed on the surface of the siliceous malachite, and the hydrophobicity of the surface of the siliceous malachite is enhanced, thereby achieving efficient flotation of siliceous malachite.

[0009] As a preferred solution, the concentration of the slurry is 30-60 mg / L.

[0010] As a preferred solution, the amount of the water-soluble copper salt added is 10~50mg / L. The water-soluble copper salt mainly provides Cu²⁺. Theoretically, any compound that can ionize Cu²⁺ in water meets the requirements. As a more preferred solution, the water-soluble copper salt includes at least one of anhydrous copper sulfate, copper sulfate pentahydrate, and copper nitrate. The concentration of the water-soluble copper salt needs to be controlled within an appropriate range. If its concentration is too low, it is difficult to effectively activate the malachite mineral. If its concentration is too high, the cost of the agent consumption is also high, and excessive dosage will lead to reduced coordination stability between malachite and copper ions, resulting in reduced adsorption performance of the collector.

[0011] As a preferred solution, the amount of the water-soluble carbonate added is 10-50 mg / L. The water-soluble carbonate mainly provides carbonate ions. Theoretically, any compound that can ionize carbonate ions in water meets the requirements. As a more preferred solution, the water-soluble carbonate includes at least one of sodium carbonate and sodium bicarbonate. The concentration of the water-soluble carbonate is preferably matched with the concentration of the water-soluble copper salt.

[0012] The present invention also provides a flotation method for high alkaline copper oxide ore or copper-cobalt oxide ore, which comprises the following steps: 1) crushing, grinding and slurrying the raw ore of high alkaline copper oxide ore or high alkaline copper-cobalt oxide ore to obtain slurry; 2) adding flotation reagents including a sulfiding agent and a xanthate collector to the ore pulp to carry out flotation I of malachite or malachite-cobalt oxide ore to obtain froth concentrate I and tailings I; 3) After the tailings I are activated by water-soluble copper salts and water-soluble carbonates, flotation reagents including sulfiding agents and xanthate collectors are added to carry out chrysocolla flotation II to obtain froth concentrate II and tailings II; 4) adding flotation reagents including fatty acid collectors to the tailings II to carry out dealkalized calcium magnesium gangue mineral flotation III to obtain underflow concentrate III; 5) Combine the froth concentrate I, froth concentrate II and underflow concentrate III to obtain copper oxide concentrate or copper-cobalt oxide concentrate.

[0013] The present invention is aimed at high alkaline copper oxide (or copper-cobalt) ore, which has high alkaline calcium and magnesium grades and strong surface hydrophilicity, while the existing positive flotation process has low copper (or copper-cobalt) recovery rate, high direct leaching acid consumption and high production cost. The present invention proposes a process flow of "combined forward and reverse flotation", that is, first forward flotation of copper and cobalt minerals is performed, and useful minerals mainly composed of malachite and cobalt minerals are recovered together. The tailings are mainly siliceous malachite with strong hydrophilicity. Water-soluble copper salts and water-soluble carbonates are used to transform the crystal phase and reconstruct the sites on the surface of siliceous malachite to expose more copper active sites on the surface of siliceous malachite, thereby fully activating the siliceous malachite, so that it can be efficiently floated and separated from siliceous malachite through a common "sulfide-xanthate" reagent system, solving the technical problem of difficult flotation of siliceous malachite. The flotation tailings are then subjected to reverse flotation to separate alkaline gangue minerals, which not only effectively solves the problem of copper and cobalt resources running away in the existing forward flotation technology, but also realizes the efficient separation of alkaline gangue minerals such as calcium and magnesium, and significantly reduces the acid consumption of subsequent leaching operations.

[0014] As a preferred solution, the calcium and magnesium grades in the high alkaline copper oxide ore or high alkaline copper cobalt oxide ore are both greater than 8%. The copper cobalt oxide ore involved in the present invention has high calcium and magnesium grades and high alkaline gangue mineral content.

[0015] As a preferred solution, the mass proportion of the ore grinding to meet the particle size of -0.074 mm is 50% to 80%. Grinding to an appropriate particle size is conducive to the full dissociation of the minerals.

[0016] As a preferred solution, the slurry is adjusted to meet the slurry concentration of 20-40wt%.

[0017] As a preferred solution, the flotation I includes two roughing processes: the reagent system of the first roughing process is: 600-800 g / t of sulfiding agent, 500-800 g / t of xanthate collector, and 20-50 g / t of frother; the reagent system of the second roughing process is: 100-200 g / t of sulfiding agent, and 300-400 g / t of xanthate collector. The flotation I is mainly used to recover malachite and cobalt oxide minerals, and adopts the existing conventional "sulfiding-xanthate" reagent system.

[0018] As a preferred solution, the flotation II includes two roughing processes: the reagent system of the first roughing process is: 50-80 g / t of water-soluble copper salt, 50-80 g / t of water-soluble carbonate, 30-50 g / t of sulfiding agent, and 100-200 g / t of xanthate collector; the reagent system of the second roughing process is: 40-80 g / t of xanthate collector. The flotation II introduces an activator to transform the crystal phase and reconstruct the sites of the chrysocolla surface, so that more copper active sites are exposed on the surface of the chrysocolla. After being fully activated, the adsorption of the collector on the surface of the chrysocolla is enhanced, so that the existing conventional "sulfurization-xanthate" reagent system can be used to flotate and separate the chrysocolla.

[0019] It should be noted that the current industrial treatment method for copper oxide (or copper-cobalt) ore is often a combined beneficiation and smelting process, that is, beneficiation first and then wet leaching. Since the flotation concentrate has to enter the wet leaching operation, the grade requirement for the flotation concentrate is not very high, mainly considering the acid consumption and production cost. Therefore, there is no need to add a beneficiation operation to the flotation process.

[0020] As a preferred solution, the vulcanizing agent includes at least one of sodium sulfide and sodium hydrosulfide. A further preferred vulcanizing agent is sodium sulfide.

[0021] As a preferred solution, the xanthate collector includes at least one of propyl xanthate, butyl xanthate and pentyl xanthate. A further preferred xanthate collector is pentyl xanthate.

[0022] As a preferred solution, the foaming agent includes 2# oil.

[0023] As a preferred embodiment, the water-soluble copper salt includes at least one of anhydrous copper sulfate, copper sulfate pentahydrate, and copper nitrate.

[0024] As a preferred solution, the water-soluble carbonate includes at least one of sodium carbonate and sodium bicarbonate.

[0025] As a preferred solution, the flotation III includes a roughing step; the reagent system of the roughing step is: 500-800 g / t of fatty acid collector, such as oleic acid, oleic acid derivatives, etc.

[0026] The copper oxide concentrate or copper cobalt oxide concentrate of the present invention is subjected to wet leaching.

[0027] Compared with the prior art, the technical solution of the present invention has the following beneficial technical effects: (1) The present invention uses the "crystal phase transformation and site reconstruction" method to activate the flotation of siliceous malachite. By introducing water-soluble copper salts (such as copper sulfate) and water-soluble carbonates (such as sodium carbonate), the surface active sites of siliceous malachite are directional controlled to expose more copper active sites, enhance the hydrophobicity of the surface of siliceous malachite, strengthen the adsorption of the collector on the surface of siliceous malachite, and achieve effective flotation separation of siliceous malachite. Compared with the existing conventional siliceous malachite flotation separation method, it has the characteristics of small dosage, low cost, low toxicity, good flotation effect, etc., and has strong adaptability, no need to change the flotation process, and is easy to promote and apply in industry.

[0028] (2) The present invention provides a "combined forward and reverse flotation" method suitable for complex high-alkaline copper oxide (or copper-cobalt) ores. The method firstly performs forward flotation of easily selected malachite and cobalt-containing minerals, then adopts the "crystal phase transformation and site reconstruction" method to enhance the flotation of malachite, and finally performs reverse flotation to remove alkaline calcium-magnesium gangue minerals. Compared with the existing forward flotation process for copper-cobalt oxide ores, the process can solve the problem of tailing of copper and cobalt resources in forward flotation, and the recovery rates of copper and cobalt are increased by 10% or more. In addition, the calcium-magnesium gangue minerals can be efficiently separated from useful minerals, and the process is simple.

[0029] (3) The flotation technology and method provided by the present invention can not only realize the effective flotation recovery of chrysocolla, but also significantly reduce the acid consumption and cost of the wet leaching process, thus solving the problems of the existing process of chrysocolla being difficult to separate, high acid consumption, low leaching rate and high production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a flotation flow chart of Example 1 of the present invention.

[0031] Figure 2 This is the XRD diagram of the chrysocolla ore and flotation concentrate of Example 1 of the present invention.

[0032] Figure 3 This is a comparison chart of the flotation results of Example 1 of the present invention.

[0033] Figure 4 This is a comparison chart of the flotation results of Example 2 of the present invention.

[0034] Figure 5 This is the actual flotation flow chart of the complex high alkaline copper (cobalt) oxide ore of the present invention. DETAILED DESCRIPTION

[0035] The following specific examples are intended to further illustrate the content of the present invention, but are not intended to limit the scope of protection of the claims of the present invention. The pharmaceutical agents used without indicating the manufacturer are all conventional products that can be purchased commercially.

[0036] Example 1 The test sample is pure chrysocolla mineral. After crushing, ceramic ball milling and screening, a powder sample with a particle size of 37-74 µm was obtained. The elemental analysis was performed by XRF. The results are shown in Table 1. The results show that its purity meets the requirements of pure chrysocolla mineral. Weigh 2 g of chrysocolla sample and add 40 mL of deionized water for flotation. The flotation process is as follows: Figure 1 ① 40 mg / L of copper sulfate pentahydrate, 40 mg / L of sodium carbonate, and 60 mg / L of collector sodium oleate were added in sequence, and the scraping time was 3 min. The flotation concentrate and tailings were dried and weighed, and the recovery rate was calculated. The phase analysis of the chrysocolla ore and flotation concentrate was performed. The results are shown in the figure. Figure 2 As shown in the results, the flotation concentrate was detected with malachite phase, indicating that the chrysocolla has been converted into easily selectable malachite by the precursor reagent crystal phase; ② No calcium sulfate pentahydrate and sodium carbonate activator were added, only 60 mg / L of sodium oleate collector was added. The test results are shown in Figure 3 As shown, the results show that the recovery rate of adding precursor reagents is 85.32%, and the recovery rate of malachite without adding calcium sulfate pentahydrate and sodium carbonate activator is only 1.45%.

[0037]

[0038] Example 2 The test sample is pure chrysocolla mineral, which is crushed, ball-milled, and sieved to obtain a powder sample with a particle size of 37-74 µm. Weigh 2 g of chrysocolla sample and add 40 mL of deionized water for flotation. The flotation process is as follows: Figure 1 As shown. ① 30 mg / L of copper sulfate pentahydrate, 30 mg / L of sodium carbonate, and 80 mg / L of sodium oleate collector were added in sequence, and the scraping time was 3 min. The flotation concentrate and tailings were dried and weighed, and the recovery rate was calculated; ② 30 mg / L of copper sulfate pentahydrate and 80 mg / L of sodium oleate collector were added in sequence, and the scraping time was 3 min. The flotation concentrate and tailings were dried and weighed, and the recovery rate was calculated; ③ 30 mg / L of sodium carbonate and 80 mg / L of sodium oleate collector were added in sequence, and the scraping time was 3 min. The flotation concentrate and tailings were dried and weighed, and the recovery rate was calculated; ④ Only 80 mg / L of sodium oleate collector was added. The test results are shown in Figure 4 The results show that chrysocolla can be effectively floated only under condition ①.

[0039] Example 3 Compared with Example 1, the only difference is that the collector sodium oleate is changed to the "sodium hydrosulfide-amyl xanthate-2# oil" reagent system, that is, the amount of sodium hydrosulfide is 80 mg / L, the amount of amyl xanthate is 80 mg / L, and the amount of 2# oil is 5 mg / L, and the other conditions and parameters are the same as those in Example 1. The test results show that the recovery rate is 86.15%, indicating that the introduction of an activator in the "sulfide-xanthate" system can also transform the crystal phase of chrysocolla and achieve effective flotation of chrysocolla.

[0040] Example 4 For a complex and difficult to select high alkaline oxidized copper ore in Yunnan, the copper grade is 1.26%, the calcium grade is 9.28%, and the magnesium grade is 8.33%. Its main components are malachite and chrysocolla. The gangue minerals are mainly quartz, dolomite and calcite. The oxidation rate is greater than 90%, of which the chrysocolla content is about 40%. The flotation test process is as follows Figure 5 The specific flotation experiment steps are as follows: (1) Grinding and slurry adjustment: The crushed copper oxide ore is ground, with a grinding fineness of -0.074 mm accounting for 65%, and then water is added to adjust the slurry concentration to 30wt%.

[0041] (2) Direct flotation operation: ① Sulfidation flotation of malachite: In the first roughing operation, sulfiding agent NaHS 600g / t, collector amyl xanthate 800g / t, and 2# oil 20g / t were added in sequence, and flotation was carried out for 5 minutes; in the second roughing operation, sulfiding agent NaHS 200g / t and collector amyl xanthate 400g / t were added in sequence, and flotation was carried out for 5 minutes; ② Activated flotation of malachite: In the third roughing operation, copper sulfate 60g / t, sodium carbonate 60g / t, sulfiding agent NaHS 50g / t, and collector amyl xanthate 100g / t were added in sequence, and flotation was carried out for 5 minutes; in the fourth roughing operation, collector amyl xanthate 50g / t was added, and flotation was carried out for 5 minutes; the concentrates from the four roughing operations were mixed together to form concentrate I, and the tailings were subjected to reverse flotation.

[0042] (3) Reverse flotation: The tailings from the four direct flotation operations were subjected to reverse flotation to remove alkaline calcium-magnesium gangue minerals. The amount of collector sodium oleate was 500 g / t and the flotation time was 5 min. The bottom flow product in the reverse flotation tank was mixed with concentrate I to form copper oxide concentrate, and the foam product was tailings.

[0043] On the other hand, as a comparative example, no siliceous malachite activator was added in the third stage of the positive flotation operation, and the other conditions and parameters were the same as those in Example 4. The results are shown in Table 2.

[0044]

[0045] The flotation method of the present invention is higher than the existing flotation method in terms of copper recovery rate, calcium and magnesium removal rate and chrysocolla recovery rate.

[0046] Example 5 For a complex high alkaline copper-cobalt oxidized ore in the Democratic Republic of the Congo (DRC), the copper grade is 1.75%, the cobalt grade is 0.22%, the calcium grade is 9.11%, and the magnesium grade is 8.54%. The copper-containing minerals are mainly malachite and chrysocolla, and the gangue minerals are mainly quartz and dolomite. The oxidation rate is greater than 90%, and the chrysocolla content is about 45%. The flotation test process is as follows Figure 5 The specific flotation experiment steps are as follows: (1) Grinding and slurry adjustment: The crushed copper oxide ore is ground, with a grinding fineness of -0.074 mm accounting for 70%, and then water is added to adjust the slurry concentration to 33wt%.

[0047] (2) Direct flotation operation: ① Sulfidation flotation of malachite: In the first roughing operation, sulfiding agent NaHS 600g / t, collector amyl xanthate 800g / t, and 2# oil 20g / t were added in sequence, and flotation was carried out for 5 min; in the second roughing operation, sulfiding agent NaHS 200g / t and collector amyl xanthate 400g / t were added in sequence, and flotation was carried out for 5 min; ② Activated flotation of malachite: In the third roughing operation, copper sulfate 50g / t, sodium carbonate 50g / t, sulfiding agent NaHS 40g / t, and collector amyl xanthate 100g / t were added in sequence, and flotation was carried out for 5 min; in the fourth roughing operation, collector amyl xanthate 50g / t was added, and flotation was carried out for 5 min; the concentrates from the four roughing operations were mixed together to form concentrate I, and the tailings were subjected to reverse flotation.

[0048] (3) Reverse flotation: The tailings from the four direct flotation operations were subjected to reverse flotation to remove alkaline calcium-magnesium gangue minerals. The amount of collector sodium oleate was 600 g / t and the flotation time was 5 min. The bottom flow product in the reverse flotation tank was mixed with concentrate I to form copper oxide concentrate, and the foam product was tailings.

[0049] On the other hand, as a comparative example, no siliceous malachite activator was added in the third stage of the positive flotation operation, and the other conditions and parameters were the same as those in Example 5. The results are shown in Table 3.

[0050]

[0051] The flotation method of the present invention is higher than the existing flotation method in terms of copper and cobalt recovery rate, calcium and magnesium removal rate and chrysocolla recovery rate.

Claims

1. A method for activating chrysocolla mineral, characterized in that: The chrysocolla ore is ground and slurried to obtain slurry, water-soluble copper salt and water-soluble carbonate are added to the slurry for activation, and then enters the flotation process.

2. The method for activating chrysocolla mineral according to claim 1, characterized in that: The concentration of the slurry is 30-60 g / L; The amount of water-soluble copper salt added is 10-50 mg / L; The amount of water-soluble carbonate added is 10-50 mg / L.

3. The method for activating a chrysocolla mineral according to claim 1 or 2, characterized in that: The water-soluble copper salt includes at least one of anhydrous copper sulfate, copper sulfate pentahydrate, and copper nitrate; The water-soluble carbonate includes at least one of sodium carbonate and sodium bicarbonate.

4. A flotation method for highly alkaline copper oxide ore or copper-cobalt oxide ore, characterized in that: The following steps are involved: 1) crushing, grinding and slurrying the raw ore of high alkaline copper oxide ore or high alkaline copper-cobalt oxide ore to obtain slurry; 2) adding flotation reagents including a sulfiding agent and a xanthate collector to the ore pulp to carry out flotation I of malachite or malachite-cobalt oxide ore to obtain froth concentrate I and tailings I; 3) After the tailings I are activated by water-soluble copper salts and water-soluble carbonates, flotation reagents including sulfiding agents and xanthate collectors are added to carry out chrysocolla flotation II to obtain froth concentrate II and tailings II; 4) adding flotation reagents including fatty acid collectors to the tailings II to carry out dealkalized calcium magnesium gangue mineral flotation III to obtain underflow concentrate III; 5) Combine the froth concentrate I, froth concentrate II and underflow concentrate III to obtain copper oxide concentrate or copper-cobalt oxide concentrate.

5. The flotation method of a high alkaline copper oxide ore or copper-cobalt oxide ore according to claim 4, characterized in that: The calcium and magnesium grades in the high alkaline copper oxide ore or the high alkaline copper-cobalt oxide ore are both greater than 8%.

6. The flotation method of a high alkaline copper oxide ore or copper-cobalt oxide ore according to claim 4, characterized in that: The grinding is performed to meet the particle size of -0.074 mm, with the mass proportion of the particle size being 50% to 80%; The slurry adjustment is to meet the slurry concentration of 20-40wt%.

7. A flotation method for a high alkaline copper oxide ore or copper-cobalt oxide ore according to any one of claims 4 to 6, characterized in that: The flotation I includes two roughing operations: The reagent system for the first roughing is: 600~800 g / t of vulcanizing agent, 500~800 g / t of xanthate collector, and 20~50 g / t of frother. The reagent system for the second roughing is: 100~200 g / t of sulfiding agent, 300~400 g / t of xanthate collector; The flotation II includes two roughing operations: The reagent system for the first roughing is: 50~80 g / t of water-soluble copper salt, 50~80 g / t of water-soluble carbonate, 30~50 g / t of sulfiding agent, and 100~200 g / t of xanthate collector; The reagent system for the second roughing is: xanthate collector 40~80 g / t.

8. The flotation method of a high alkaline copper oxide ore or copper-cobalt oxide ore according to claim 7, characterized in that: The vulcanizing agent includes at least one of sodium sulfide and sodium hydrosulfide; The xanthate collector includes at least one of propyl xanthate, butyl xanthate and pentyl xanthate; The foaming agent includes 2# oil; The water-soluble copper salt includes at least one of anhydrous copper sulfate, copper sulfate pentahydrate, and copper nitrate; The water-soluble carbonate includes at least one of sodium carbonate and sodium bicarbonate.

9. The flotation method of a high alkaline copper oxide ore or copper-cobalt oxide ore according to claim 4, characterized in that: The flotation III includes a roughing process; The reagent system for rough selection is: 500-800 g / t of fatty acid collector.

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