Yellow Purity Is Greater Than 85% Flotation Reagent
Flotation Reagent Introduction
Foam flotation beneficiation
1 . Use foam flotation to separate copper minerals and waste rock. The copper pulp of the mill is mixed with lime milk (only water and ground limestone) to provide a basic pH, and pine oil (yes, it comes from the tree-paper mill by-product) is made into bubbles to enhance the bubbles Alcohol and collector chemicals called potassium amyl xanthate (or potassium salt of alkyl dithiocarbonate).
2 . Xanthate is added to the slurry in a relatively small amount. Xanthate is a long hydrocarbon (5 carbon) chain molecule. One end of the chain (ionic dithiocarbonate) is polar and adheres to the sulfide minerals, while the other end is non-polar, where the hydrocarbon chain is hydrophobic-annoying in water and being non-polar Hydrocarbon pine oil molecules attract.
3 . Increasing the pH value will cause more ionization of the polar ends and preferentially adhere to the chalcopyrite (CuFeS 2), while the pyrite (FeS 2) exists alone. The air is blown into the storage tank and stirred like a giant mixer, creating foam. The chalcopyrite grains are covered with xanthate molecules, and their hydrophobic ends wave around, desperately trying to get out of the water.
4 . They will adhere to the oily bubbles. When the bubbles rise to the surface and flow over the edge of the storage tank, they will be covered with chalcopyrite particles. In this way, through a series of steps, the copper ore is concentrated to a final copper content exceeding 28%. The waste stone particles will not adhere to the air bubbles and fall to the bottom of the storage tank. The waste material that comes out of the bottom of the storage tank at the end of this process is called "tail material". It is nothing more than ground rock from which copper minerals have been removed.
Effect of oxidation treatment using hydrogen peroxide (H2O2) on the floatability of copper sulfide minerals (ie, chalcopyrite and bornite) and arsenic-bearing copper minerals (ie, tennantite and enargite) is reported in this study. Pure mineral flotation shows that the floatability of each mineral significantly decreases after the oxidation treatment. Interestingly, flotation of mixed mineral of copper sulfide and arsenic-bearing copper minerals shows that enargite and tennantite exhibit a higher floatability compared to chalcopyrite and bornite after the oxidation treatment followed by the addition of potassium amyl xanthate (PAX). These flotation results indicate a possibility for selective flotation of copper sulfide and arsenic-bearing copper minerals. Indeed, bench-scale flotation tests show that the oxidation treatment using H2O2 and the addition of PAX can deliver a satisfying separation of copper sulfide and arsenic-bearing copper minerals. Difference oxidation products (i. e., CuO, Cu(OH)2, CuSO4, FeOOH, and Fe2(SO4)3) on each mineral surface are likely the cause of this different flotation behavior. Furthermore, these oxidation products may affect the adsorption amount of PAX on each mineral. Indeed, the adsorption tests show that PAX is adsorbed more on tennantite, bornite, and enargite compared to chalcopyrite owing to the formation of CuSO4 and Cu(OH)2 on the mineral surfaces under oxidizing conditions. A possible mechanism is proposed in this study to explain the selective flotation behavior of mixed minerals.
|Solubility in water
||Sodium Di-N-butyl Dithiophosphate
||Yellow to dark brown,no pungent odor