초록 ▼

A plant for conditioning and dewatering a suspension comprises a belt press, centrifuge or other continuous dewatering apparatus (3), a flow-line (1) leading to the dewatering apparatus, a pump (2) for causing suspension to flow along the line (1), means (5-9) for dosing conditioner into he suspensi

A plant for conditioning and dewatering a suspension comprises a belt press, centrifuge or other continuous dewatering apparatus (3), a flow-line (1) leading to the dewatering apparatus, a pump (2) for causing suspension to flow along the line (1), means (5-9) for dosing conditioner into he suspension at a dosing point (4), means (12) for measuring density D, means (10) for measuring the flow rate V and thereby for calculating the dry mass per unit time M, and control means (16, 17, 18) for automatically dosing a mount A of conditioner into the suspension where A-kM and k is a constant and for automatically varying V in response to D and for automatically varying the constant k in response to D.

대표청구항 ▼

[ We claim:] [1.] A plant for conditioning and dewatering a suspension comprisinga continuous filtration system or a continuous centrifugal dewatering system as a dewatering apparatus 3 for substantially continuous dewatering of the suspension,suspension flow line 1 leading to the de-watering appara

[ We claim:] [1.] A plant for conditioning and dewatering a suspension comprisinga continuous filtration system or a continuous centrifugal dewatering system as a dewatering apparatus 3 for substantially continuous dewatering of the suspension,suspension flow line 1 leading to the de-watering apparatus 3,suspension flow means 2 for causing substantially continuous flow of the suspension along flow line 1,conditioner dosing means 5, 6, 7, 8, 9 for dosing conditioner into the suspension at a dosing point 4, andcontrol means for controlling the amount of conditioner dosed into the suspension by the dosing means and for controlling the flow meanscharacterised in that the control means compriseon-line density measurement means 12 for measuring the density D of the suspension,on-line flow measurement means 10 for measuring the volume per unit time V at which the suspension flows along the flow line whereby the dry mass per unit time, M, of suspension which flows along the flow line can be calculated,means 16, 17, 18 for automatically selecting an amount A of conditioner dosed by the dosing means in response to the measured density D and volume per unit time V to provide a preselected dose A where A=kM and k is a constant,means 16, 17, 18 for automatically varying the volume per unit time V in response to the measured density D to provide a volume V or dry mass M per unit time which is preselected according to the value of D and/ormeans 16, 17, 18 for automatically varying the constant k in response to the measured density D.