Increase of pH and solid content improved the mass loss of steel
balls. This is possibility attributed to the fact that increasing pH
caused to formation of the passive ferric oxide film. Ferrous oxide is
an insulator that prevents electron transfer, hindering corrosion
and the weight loss of metal (or ball). On the other hand, increasing
feed solids percentage increased the pulp viscosity which affected
the abrasion rate. At higher pulp viscosity, the motion of the balls
and the copper sulphide samples were reduced significantly. If the
pulp viscosity was too high, the balls and the sulphide samples
would be stuck on the mill shell, significantly reducing the abrasion
rate and at lower feed solids percentage; more oxygen will be
dissolved in the pulp. Dissolved oxygen in aqueous solution had
profound influence on the corrosion of metal. It was also seen that
pH and solid content had effects of linear and quadratic on wear
rate, respectively.
การเพิ่มขึ้นของค่า Increase of pH and solid content improved the mass loss of steel
และปริมาณของแข็งที่ดีขึ้นการสูญเสียมวลของเหล็กลูก balls. This is possibility attributed to the fact that increasing pH
caused to formation of the passive ferric oxide film. Ferrous oxide is
an insulator that prevents electron transfer, hindering corrosion
and the weight loss of metal (or ball). On the other hand, increasing
feed solids percentage increased the pulp viscosity which affected
the abrasion rate. At higher pulp viscosity, the motion of the balls
and the copper sulphide samples were reduced significantly. If the
pulp viscosity was too high, the balls and the sulphide samples
would be stuck on the mill shell, significantly reducing the abrasion
rate and at lower feed solids percentage; more oxygen will be
dissolved in the pulp. Dissolved oxygen in aqueous solution had
profound influence on the corrosion of metal. It was also seen that
pH and solid content had effects of linear and quadratic on wear
rate, respectively.
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