The present invention is provided inside the supply pipe is connected to supply the slurry to the slurry pump, a rotary part which is rotated by contact with the slurry passing through the supply tube; Rotation speed measurement unit that measures a rotation speed of the rotation unit; Concentration calculating part for calculating the concentration of the slurry to calculate the rotation speed of the rotary part from the rotation speed measured by the rotation speed measurement unit; And a control unit for controlling the rotational speed of the slurry pump to the concentration calculated by the calculation unit the density; relates to a slurry pump control method using a slurry pump the slurry through the concentration measurement to a control system and it.
According to the present invention, by measuring the concentration of the slurry from the rotational speed of the impeller rotated by the slurry flowing in the slurry pump, and to improve the reliability of the concentration measurement of the unstable, non-uniform slurry, the slurry according to the concentration of this slurry by controlling the rotational speed of the pump, it can be supplied to an unstable or non-uniform mixture of slurry in a more stable manner.