the kinetics of molybdenite oxidation was studied by non-isothermal tga-dta with heating rate 5 ºc.min-1.the model-fitting kinetic approach applied to tga data .the coats-redfern method used for model fitting. the popular model-fitting gives excellent fit for non-isothermal data in chemically controlled regime. the apparent activation energy was determined to be about 34.2 kcalmol-1 with pre-ex...

Sulfomethylation of radiata pine kraft lignin was performed using formaldehyde and sodium sulfite under alkaline conditions to determine its potential as a mineral depressant for the separation molybdenite chalcopyrite by froth flotation. Optimal sulfomethylation reaction were 20% (w/w) Na2SO3 at 130 °C 4.2 h, which resulted in with sulfonate content 2.2 mmol/g. Microflotation assays showed tha...

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The type and dosage of flocculants used in the middle thickener copper-molybdenum plant, addition to adjusting quality recycled process water, is very effective on floatability molybdenite. In this study, effect starch-based flocculant (wheat starch) was investigated efficiency molybdenite flotation, molybdenum processing plant. First, sampling from overflow underflow Mo circuit (in industrial ...