Corrosive Electrochemistry Study on Interactions between Collector and Galena

3 Corrosive Electrochemistry Study on Interactions between Collector and Galena 

The above results demonstrate that the formation of stuface products of the interaction between xanthate and galena increases with the increase of xanthate concentration and xanthate has stronger inhibiting corrosive action on galena. The single capacitive reactance loop characteristic indicates that the lead xanthate may be the main oxidation product on galena surface, which is responsible for surface hydrophobicity. The amount of formation of lead xanthate will be enhanced with the increase of xanthate concentration based on the change of corrosive potential and current. 

Relationship between polarization resistance and potential of galena 

Comparing Table 7.4 and Table 7.5, it is obvious that the corrosive potential and the current of the galena electrode are lower in xanthate solution than in dithiocarbamate solution. The polarization resistance and the inhibiting corrosive efficiency in xanthate solution are higher than that in DDTC solution. It indicates that xanthate has stronger inhibiting corrosive action on galena than dithiocarbamate. 

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