Flotation method of high-magnesium sulphide ore

A high-magnesium sulfide ore technology, applied in flotation, solid separation, etc., can solve the problems of slow floating of sulfide minerals, difficulty in grinding and floating separation of sulfide minerals and magnesium-containing gangue, poor separation selectivity, etc., to achieve enhanced The effect of surface hydrophobicity

Active Publication Date: 2021-01-08
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention is based on the inventor's discovery and understanding of the following facts and problems: in the existing techniques for grinding, floating, and separating sulfide minerals such as nickel, copper, and cobalt from magnesium-containing gangue minerals, there are the following problems: 1. Stone minerals are easy to crush, which is opposite to the surface charge of the target sulfide minerals, and are prone to electrostatic adsorption of sulfide minerals; 2. Magnesium-containing gangues are easily activated by surface-adsorbed metal ions and float up; 3. Part of the sulfide minerals in polymetallic sulfide minerals Slow floating, poor sorting selectivity and other factors make it very difficult to separate high-magnesium sulfide minerals from magnesium-containing gangue by grinding and floating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A polymetallic copper-nickel sulfide ore with high magnesium-containing gangue minerals has a mass content of 1.1% nickel, 1.2% copper, and 28.3% magnesium oxide. The main minerals containing magnesium gangue are serpentine, talc, Chlorite etc.

[0044] First crush the copper-nickel ore to a particle size of 2mm to obtain the material to be finely ground, add polymeric carboxylic acid at 30g / t (calculated as dry ore) to adjust the surface electrical properties of the gangue minerals, mix it with the material to be finely ground, and then add it to the grinding equipment. It is 66% to regulate ore grinding (grinding concentration refers to the percentage of dry ore: (dry ore+water)) according to grinding concentration, particle size is finely ground to 200 order and accounts for 80%, obtains pulp; Regulates pulp concentration to 33%, with dry For mine planning, add 1000g / t citric acid to the pulp, stir and adjust the pulp for 3 minutes, complete the cleaning of metal ion...

Embodiment 2

[0056] A polymetallic copper-cobalt sulfide containing easily floating calcium-magnesium minerals, the mass content of copper is 1.3%, and the mass content of cobalt is 0.42%. The metal minerals are mainly sulfide minerals, and the magnesium-containing gangue minerals are mainly chlorite, serpentine, Talc, chlorite, etc., the total calcium and magnesium minerals in the ore accounted for 42%.

[0057] Firstly, the copper-cobalt ore is roughly ground to a particle size of 3mm to obtain the copper-cobalt mineral material to be finely ground. Calculated as dry ore, 10g / t sodium lignosulfonate is added to adjust the surface electrical properties of gangue minerals, and 500g / t lime is added to suppress iron-sulfur In order to prevent the inclusion of pyrite into the copper-cobalt concentrate, it is mixed with the material to be ground and then added to the grinding equipment. The grinding concentration is adjusted to 66%, and the particle size is finely ground to 200 mesh, accounting...

Embodiment 3

[0069] A low-grade polymetallic copper-nickel sulfide ore with high magnesium-containing gangue minerals has a mass content of 0.6% nickel, 0.2% copper, and 24.0% magnesium oxide. The main minerals containing magnesium gangue are serpentine, Talc, olivine, etc.

[0070] First crush the copper-nickel ore to a particle size of 0.4mm to obtain the material to be ground. In terms of dry ore, add 10g / t polyaluminum chloride (PAC) and 10g / t polyacrylamide (PAM) to adjust the surface electrical properties of the gangue minerals. After mixing with the material to be ground, add it to the grinding equipment, adjust the grinding according to the grinding concentration of 66%, and finely grind the particle size to 200 mesh, accounting for 90%, to obtain the pulp; adjust the concentration of the pulp to 33%, calculated as dry ore, and pour it into the pulp Add 100g / t modified starch, stir and adjust the slurry for 3 minutes, complete the cleaning of metal ions on the surface of magnesium-...

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Abstract

The invention discloses a flotation method of high-magnesium sulphide ore. The method comprises the following steps: a, crushing ore, adding an electrostatic buffer regulator, and grinding and pulpingto obtain ore pulp; b, adding a magnesium-containing gangue mineral inhibitor into the ore pulp obtained in the step a, and uniformly stirring; c, adding an activation regulator into the mixed material obtained in the step b, and uniformly stirring, wherein the activation regulator comprises 1-10 parts by weight of soluble copper salt, 0-200 parts by weight of ammonium/amine salt and 1-100 partsby weight of a reducing active agent; d, adding a flotation reagent into the mixed material obtained in the step c, and uniformly stirring; and e, carrying out flotation on the mixed material obtainedin the step d, and separating to obtain target mineral concentrate and flotation tailings. According to the method, the separation process of sulfide minerals and magnesium-containing gangue mineralscan be strengthened, and magnesium mineral components in the product are effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of ore flotation, and in particular relates to a flotation method of high-magnesium sulfide ore. Background technique [0002] There are mainly three types of nickel deposits mined this year: laterite nickel deposits, nickel sulfide deposits and weathered nickel silicate deposits. The nickel resources to be developed are polymetallic combined with marine minerals. Among them, laterite nickel ore reserves accounted for 55%, nickel sulfide ore accounted for 28%, and the type of nickel resources in my country is mainly nickel sulfide ore, about 2 / 3 of nickel comes from nickel sulfide deposits. However, the nickel grade in nickel sulfide ores is usually low, and most of them need to be enriched by beneficiation before smelting to extract nickel. Therefore, the efficient separation of nickel, copper, cobalt and other sulfide ores has long been a hot spot of concern. However, the flotation efficiency and concentr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/018B03D1/002B03D1/008B03D1/012B03D1/006B03D1/01B03D1/016B03D101/00B03D101/06B03D103/02
CPCB03D1/00B03D1/018B03D1/002B03D1/008B03D1/012B03D1/006B03D1/01B03D1/016B03D2201/007B03D2201/00B03D2203/02
Inventor 康金星宋磊王亚运于传兵吕东郭素红刘志国王传龙王鑫
Owner CHINA ENFI ENGINEERING CORPORATION
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