MASS FLOW METERING SYSTEMS

WIPO Patent Application WO2004109240

A3

A mass flow metering system (1) according to the invention comprises a metered vessel (2) for receiving a flow of froth via a conduit (11). The metered vessel (2) is suspended from mass measuring means in the form of load cells (8, 9) and (10) within a second outer vessel (14). The metered vessel (2) has discharge opening (13) for discharging the froth from the vessel, and a discharge control valve (3) associated with the opening for controlling the discharge of froth from the metered vessel. The metered vessel (2) has a level sensor (5), located in the metered vessel at a predetermined level and associated with the valve (3) for opening the valve when the predetermined froth level is reached. In use, the system operates periodically and in cycles, which alternates between a measuring cycle and a cleaning cycle. There is further provided a method of measuring the mass flow of continuous flowing slurry in line.

JP4570029	Flowmeter
WO/2004/013585	DEVICE FOR THE DETERMINATION OR MONITORING OF A PHYSICAL OR CHEMICAL PROCESS PARAMETER
JP3388576	DETECTING APPARATUS FOR GAS LEAK

VAN SCHALKWYK THEO CORNELIUS (ZA)
LEIGHTON ROGER GORDON (ZA)
TURNER STUART (ZA)
BELL MICHAEL SEAN (ZA)

PCT/IB2004/050847

May 12, 2005

June 07, 2004

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ANGLO AMERICAN PLATINUM CORP (ZA)
VAN SCHALKWYK THEO CORNELIUS (ZA)
LEIGHTON ROGER GORDON (ZA)
TURNER STUART (ZA)
BELL MICHAEL SEAN (ZA)

G01F1/00; G01F1/76; G01F3/38; G01F11/28; G01F23/296; G01G13/16; G01G13/24; (IPC1-7): G01F1/76; G01F1/00; G01F1/74; G01F3/38; G01G17/06

US4836017A	1989-06-06
US3125881A	1964-03-24
US4823592A	1989-04-25

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