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CN-121623961-B - Copper oxide mineral flotation inhibitor and flotation method of copper oxide or copper cobalt oxide ore

CN121623961BCN 121623961 BCN121623961 BCN 121623961BCN-121623961-B

Abstract

The invention discloses a copper oxide mineral flotation inhibitor and a copper oxide or copper cobalt oxide mineral flotation method, and belongs to the technical field of mineral separation. The copper oxide mineral flotation inhibitor comprises sulphide salt, dithiocarbamate and cysteine, is used in a copper oxide or copper-cobalt oxide ore reverse flotation system, and can realize high-selectivity inhibition of copper oxide minerals such as malachite and the like so as to ensure that the fatty acid collector can collect calcium-magnesium carbonate gangue minerals with high efficiency, thereby being capable of directly reverse flotation to remove the calcium-magnesium gangue minerals, the recovery rate of the calcium-magnesium gangue minerals in foam products is more than 90%, and the leaching acid consumption of copper oxide or copper-cobalt oxide ore concentrate is greatly reduced, and the production cost is greatly reduced.

Inventors

  • YUE TONG
  • Fu Xinzhuang
  • SUN WEI

Assignees

  • 中南大学

Dates

Publication Date
20260512
Application Date
20260205

Claims (9)

  1. 1. A copper oxide mineral flotation inhibitor is characterized by comprising the following components in percentage by mass: 10-20% of sulfide salt; 60-80% of dithiocarbamate; 10-20% of cysteine.
  2. 2. A copper oxide mineral flotation suppressant according to claim 1, wherein said sulphide salt comprises at least one of sodium sulphide, potassium sulphide, ammonium sulphide, sodium bisulfide and potassium bisulfide.
  3. 3. A copper oxide mineral flotation suppressant according to claim 1, wherein said dithiocarbamate comprises at least one of ammonium dithiocarbamate, sodium dithiocarbamate, potassium dithiocarbamate.
  4. 4. A flotation method of copper oxide or copper-cobalt oxide ore is characterized by crushing, grinding and pulping raw copper oxide or copper-cobalt oxide ore to obtain ore pulp, adding the copper oxide mineral flotation inhibitor and the calcium-magnesium carbonate mineral collector according to any one of claims 1-3 into the ore pulp for reverse flotation to obtain a foam product which is calcium-magnesium carbonate mineral, and obtaining an underflow product which is copper oxide or copper-cobalt oxide ore concentrate.
  5. 5. The method for flotation of copper oxide or copper cobalt oxide ore according to claim 4, wherein the grinding is performed so that the mass ratio of the particles with fineness of-0.074 mm is 50% -90%.
  6. 6. The method for flotation of copper oxide or copper cobalt oxide ore according to claim 4, wherein: And (3) pulp is mixed so that the mass concentration of the pulp is 15-45%.
  7. 7. The method for floating copper oxide or copper cobalt oxide ore according to claim 4, wherein the addition amount of the copper oxide mineral floating inhibitor relative to the raw ore is 100-1000 g/t.
  8. 8. The method for floating copper oxide or copper cobalt oxide ore according to claim 4, wherein the addition amount of the calcium magnesium carbonate mineral collector relative to the raw ore is 200-1000 g/t.
  9. 9. A method for flotation of copper oxide or copper cobalt oxide ore as claimed in claim 4 or 8 wherein the calcium magnesium carbonate mineral collector is a fatty acid collector.

Description

Copper oxide mineral flotation inhibitor and flotation method of copper oxide or copper cobalt oxide ore Technical Field The invention relates to a flotation inhibitor, in particular to a copper oxide mineral flotation inhibitor, and also relates to a flotation method of copper oxide or copper cobalt oxide ore, belonging to the technical field of mineral separation. Background Copper and cobalt metals are widely used in various fields such as national defense, science and technology, construction and the like. With the continuous decline of global copper and cobalt resources and the increasing exhaustion of copper sulfide resources which are easy to select, copper oxide ores and copper oxide cobalt ores are gradually important targets for developing copper and cobalt resources. Copper oxide ores are widely distributed in areas such as south america and africa, copper oxide cobalt minerals such as malachite and cobalt oxide ores are particularly used as main useful components, but a large amount of carbonate gangue minerals such as dolomite and calcite are accompanied, the ore structure is complex, the embedding granularity is fine, the mineral composition is various, and a great challenge is brought to flotation separation. Therefore, it is important and urgent to develop economical and efficient recovery techniques and methods of copper oxide or copper-cobalt oxide ore. At present, the treatment process for copper oxide or copper cobalt oxide ore in industry mainly comprises a flotation method, a hydrometallurgy method and a dressing and smelting combined process. Although copper and cobalt can be recovered by hydrometallurgy, for high-calcium magnesium cupric oxide or cupric oxide cobalt ore, gangue minerals consume a large amount of sulfuric acid, so that the acid consumption is high and the production cost is high. In order to reduce the acid consumption, the calcium-magnesium carbonate gangue minerals are usually removed by pre-flotation, so that flotation separation becomes a key premise in the ore treatment process. However, the existing copper oxide ore flotation mostly adopts a direct flotation process flow of 'sulfuration-xanthate', the usage amount of a vulcanizing agent is large, the stability is poor, and effective separation of useful minerals and calcium magnesium carbonate minerals is difficult to realize, so that the usage amount of leached sulfuric acid of rear concentrate is large, and the production cost is greatly increased. Aiming at high-calcium magnesium copper oxide ore or copper-cobalt oxide ore, china patent (publication No. CN 119319041A) discloses a flotation method and a combined collector for the high-calcium magnesium copper oxide ore, the method proposes a forward and reverse flotation process, namely, valuable minerals such as malachite and the like are floated by adopting 'sulfuration-xanthate', and then gangue minerals such as calcium magnesium carbonate are reversely floated by tailings, so that the high-efficiency recovery of the valuable minerals is realized, the leaching acid consumption is reduced, but the process flow is relatively complex. Chinese patent (publication No. CN 116273483A) discloses an activated flotation method of carbonate-type copper oxide ores, which adopts a composite regulator, a composite vulcanizing agent, a coupling activator and a composite collector to realize the efficient recovery of refractory copper minerals, but has the defects of various medicament types and high cost. Disclosure of Invention In the existing reverse flotation process of copper oxide or copper-cobalt oxide ore, the problems of difficult effective flotation separation of copper oxide or copper-cobalt oxide ore and calcium-magnesium gangue mineral, low copper-cobalt recovery rate, high leaching acid consumption, high cost and the like exist. The first object of the invention is to provide a copper oxide mineral flotation inhibitor which can realize high-selectivity inhibition of copper oxide minerals such as malachite and the like in a copper oxide or copper oxide cobalt ore reverse flotation system so as to ensure that a fatty acid collector can efficiently collect calcium magnesium carbonate gangue minerals, thereby being capable of directly reverse flotation removing the calcium magnesium gangue minerals, and the recovery rate of the calcium magnesium gangue minerals in a foam product is more than 90%. The second object of the present invention is to provide a flotation method for copper oxide or copper-cobalt oxide ore, which is based on the use of a specific copper oxide mineral flotation inhibitor, which can selectively adsorb on the surface of copper oxide minerals such as malachite, thereby significantly enhancing the hydrophilicity of the surface of copper oxide minerals, and by using a fatty acid collector with a high selective capture capacity for calcium-magnesium carbonate minerals in combination, the hydrophobicity of the surface of calcium-magnesium carbona