Froth Flotation (Sulphide & Oxide)

Froth Flotation (Sulphide & Oxide) 2017-03-23T09:43:25+00:00
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Ammonium dihydrogen phosphate collector (1 reply)

7 months ago
Mahdi 7 months ago

my research is about on chemicals in the copper flotation. Ammonium dihydrogen phosphate collector selectivity is very high copper and pyrite have been depressant but declined to copper recovery. What a way to increase recovery copper. What is the mechanism of this collector in depressant pyrite ?

Sugar Watkins
7 months ago
Sugar Watkins 7 months ago

Haven't used it before.....but probably will show dispersing/depressing functions...

Probably very similar behaviour to Potassium Dihydrogen Phosphate.

Calcite flotation in acidic media is a difficult task due to the solubility of calcite and consequently the release of calcium ions in the flotation pulp. In addition, the interaction of calcium ions with the flotation reagents requires the correct selection of these reagents. In this study, potassium oleate and potassium dihydrogen phosphate (KH2PO4) were used as collector and depressant, respectively. Micro-flotation experiments were conducted to probe the effect of these chemical reagents as well as their interaction on calcite flotation using H2SO4 as a pH regulator. In addition, to elucidate the depressing action of KH2PO4 on calcite, electrokinetic properties of calcite have been measured in relation to pH and in the absence and presence of KH2PO4. Moreover, thermodynamic calculations were used to rationalize the reasons for calcite depression as well as the adsorption mechanism of KH2PO4 onto the calcite surface.

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