The process description is sufficient to see that the density change from whatever the average is for the current formulation that the change to a 1200 kg/m3 fluid will have little effect. Power requirements for turbulent mixing are proportional to the average density of the fluid.

The process is fully turbulent, especially for the low viscosity fluids in the current formulation. A viscosity increase to 200 cp. will have no observable effect on the power requirements. The viscosity change may have an effect on the powder addition, but that cannot be determined from the information supplied.

The described change in the density and viscosity will have no effect on the motor rating, gear box, shaft diameter or blade length.