Effect of calcium and magnesium ions on the rheological characteristics of dolo-mite pulp
In the process of removing magnesium from phosphate rock through reverse flotation,the dissolution of dolomite and the recycling of backwater would lead to the increase of calcium and magnesium ions in the pulp.This study took dolomite as the research object,and carried out single mineral flotation test,mineral particle distribution test,and pulp viscosity test under different concentrations of Ca2+and Mg2+.The results were as follows:under weak acidic conditions,Ca2+and Mg2+would affect the flotation results while changing the viscosity of the pulp;Ca2+had a certain inhibitory effect on the dolomite;with the increase of Ca2+concentration,the floating rate of dolomite de-creased first and then increased,while the viscosity of the pulp increased first and then decreased;Mg2+would acti-vate the dolomite;with the increase of Mg2+concentration,the floating rate of dolomite increased first and then re-mained stable,while the viscosity of the pulp decreased first and then remained stable.
dolomitefine particlescalcium and magnesium ionsrheological characteristics of pulp
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