Tungsten Flotation Collector—Combination Collector
Commonly used tungsten flotation collector can be divided into anionic collector, cationic collector, amphoteric collector and nonpolar collector and complexing or chelating collector dosage form five categories, these collector is known as the fatty acid, phosphoric acid, chelation, amine, petroleum and so on.
Full of beautiful collectors are always dazzling, objectively speaking, every collector has different strengths and weakness, for example, the fatty acid collector has strong ability of flotation but the ability of selectivity is poor. The selectivity of chelating collector is good but it is expensive. The selectivity of phosphoric acid, sulfonic acid, amine are good but the flotation ability is a bit poor and there exists environmental pollution. In great abundance of choices, it says suitable is the best, but it is hard to choose the right thing in one in a million, after continuously experiment again and again, people found that is also can go with “mix and match” style based on lessons drawn from others’ mistakes, and the result is quite good.
Theoretically, in the flotation system of two or more than two collector can exist mutual effect, can produce synergies in the flotation process, play a better role, the “synergistic effect” mechanism of drug combination is more complex, it can be roughly summed up as a total adsorption mechanism, the aojiang mechanism, charge compensation mechanism, function complement mechanism, etc. Practice has proved that most selectivity of the sequestration collectors and amphoteric collectors are better than fatty acids, but collecting ability is weak, therefore use a variety of types of mixed collector to add, the synergistic effect can happen in tungsten flotation, not only can improve the flotation effect of drugs, but also can reduce the dosage of the drug. Of course “mix and match” is not “faulty”, after all, they are all chemicals.
Successful “mix and match” is never happen overnight, the group of “mix and match’ is selected by rigorous selection theory and experiment practices. Which are frequently used in current industrial mix combinations are: combination of oleic acid and kerosene, sodium oleic acid and oleic acid ammonium, petroleum sulfonic acid and sodium oleate combination, fatty acids combined with six fluorine butadiene, hydroxylamine acid and alkyl sulfonate, CKY combined with sodium oleate, benzene armour hydroxyl oxime acid and oleic acid combination and so on. There is no doubt that the application of combination types of collector for various mineral processing enterprise promoted economic and environmental benefits are indisputable facts.
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