Deng Jiushuai and Wenming Ming et al. determined the existence of fluid inclusions in copper sulfide minerals such as chalcopyrite and porphyry ore by petrographic analysis, SEM-EDS analysis and ICP-MS analysis, and studied fluid inclusions. type, structure and composition, the total concentration of iron measured copper elements solution fluid inclusions released. The results show that there are a large number of fluid inclusions in chalcopyrite and porphyrite. The fluid inclusions are isolated and distributed in groups. The shapes are long, elliptical and irregular, and the inclusions are along the chalcopyrite crystal. The growth belts are oriented and the individual sizes range from 3 to 60 μm. The contact relationship between the cuprite and the transparent mineral quartz indicates that the porphyrite is in contact with quartz, has a eroded edge, or invades the quartz crack. The fluid inclusions in the middle of the quartz cleft are cut through the quartz particles and extend to the boundary of the porphyrite, indicating that the fluids in such inclusions are related to mineralization. These inclusions captured by chalcopyrite during diagenesis and mineralization are rich in copper, iron, chlorine and sulfate ions. During the crushing and grinding process, these fluid inclusions overflow and are released to the flotation slurry. The experimental results show that the concentrations of copper and iron in the solution are 5.79 × 10 -6 moI / L and 17.20 × 10 -6 moI / L, respectively, which is much higher than the experimental value of chalcopyrite dissolution (0.05 × 10 -6 moI / L) And 0.12 × 10 - 6 moI/L). Therefore, the release of inclusions is the main source of copper and iron ions in solution, which is a new discovery of the inevitable ion source pathway in flotation pulp. At the same time, the residual bit field after the release of the inclusions caused the difference in the surface composition and roughness of the chalcopyrite. In order to examine the impact of inevitable ion flotation of chalcopyrite, and Sun Chuanyao Weiming An advantage of some soluble metal salts used to research. The results show that according to the degree of influence of these inevitable ions on the flotation of chalcopyrite, the inevitable ions can be divided into two types. The first type is Mg 2+ and AI 3 + plasma, which has a large flotation of chalcopyrite. influences. The second type is Pb 2 + , Zn 2 + , Fe 2 + , Fe 3+ and Ca 2 + plasma, which has little effect on the flotation of chalcopyrite. The metal ions that affect the flotation are Mg 2 + and Al 3+ . When the concentration is 2.5 × 10 - 4 moI / L, the flotation recovery of chalcopyrite is reduced by 3% to 7%, of which Mg 2 + The effect on the flotation recovery rate of chalcopyrite did not increase with the increase of concentration, but with the increase of AI 3+ concentration, the flotation recovery rate of chalcopyrite was further reduced. Other metal ions including low concentrations such as Pb 2 + , Zn 2 + , Fe 2 + , Fe 3+ and Ca 2 + have no effect on the flotation of chalcopyrite. After the concentration is increased, all ions more or less inhibit the flotation of chalcopyrite. The effect of Fe 3+ on the flotation of chalcopyrite began to appear after the concentration reached a certain level (2.5 × 10 -3 moI / L).
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Copper sulfide ore flotation slurry is inevitable ion and its influence
Inevitably resulting complex ion flotation solution phase, an Important Influence on brass and other mineral flotation separation of minerals. Many scholars at home and abroad have conducted more research on this in recent years. Source floating on mineral slurry inevitably ion current research focus on surface water and dissolved mineral impurities. In various acid-base solutions, chalcopyrite is oxidized or electrochemically dissolved by the leaching agent following various kinetic models.