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- W2000792589 abstract "Diffuse reflectance Fourier transform infrared spectroscopy, Hallimond tube flotation cell and microelectrophoresis have been utilized to investigate the reactions involved in the adsorption-abstraction of K-amylxanthate on finely ground galena. The mineral was ground in a laboratory stainless steel rod mill in basic conditions (pH 11.0 and 12.5). pH regulators were NaOH and CaO. A two-stage adsorption process was discovered for amylxanthate at pH 11.0. During the first stage a mixed layer is formed. For low concentrations or submonolayer capacity it is made of 1:1 monocoordinated lead xanthate and dixanthogen; for surface coverage up to 5.4 it is composed of nonstoichiometric lead xanthate, amyldixanthogen and amylcarbonate disulphide. In the second stage, mainly amyldixanthogen is formed; at high xanthate concentration (1×10−2 mole per dm3) 1:2 coordinated lead xanthate is formed in addition. The second-stage process corresponds to complete flotation and to a sharp decrease in zeta potentials." @default.
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- W2000792589 date "1990-05-01" @default.
- W2000792589 modified "2023-10-17" @default.
- W2000792589 title "Interaction of finely ground galena and potassium amylxanthate in flotation, 1. Influence of alkaline grinding" @default.
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- W2000792589 doi "https://doi.org/10.1016/0301-7516(90)90049-5" @default.
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