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Vertical Plate Pressure filter VPA

Vertical Plate Pressure filter VPA
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Mechanical dewatering by pressure As particles get finer the resistance against removing water increases. Gravity dewatering can no longer be used, pressure has to be used. By creating a differential pressure Dp across a cake of solids, liquid can be removed by Compression “Dewatering by compression means replacing the liquid in a cake with particles”. Through blow “Dewatering by through blow means replacing the water in a cake with air”. 2 Pressure filter vpa For vertical plate pressure filters either compression or a combination of compression and air through blow is used. The VPA...

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The heart of the system is the pressure filter which is available in two basic versions, VPA and VPC. VPA means Vertical Plate Airblow and designates the filter which provides for compressed air dewatering of the filter cake. This machine can operate with pressures up to 16 bar and is used where high pressure filtration and membrane pressing is required for dewatering. The operating pressure of this machine is usually 7-10 bar and is the standard machine for ewatering of mineral d concentrates. Membranes are inflated with compressed air. Cycle time can often be as short as 6 minutes. The...

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Filter cloth support upper rails Load cells Cloth wash spray bars Fixed head Moving head Parallel hydraulic cylinders Filter cake discharge chute The vertical plate pressure filter Development in filtration and dewatering echnology has t advanced rapidly in the last years. Environmental awareness has been a major riving force and d increase in cost of energy and personnel has made tougher demands on efficiency and automation. Metso now launches the next generation of the VPA including the ”JUMBO”, with capacities in excess of 250 tonnes per hour in a single unit. The basis of this...

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VPA - Features and benefits • Simple construction with few moving parts • Pulling cylinders provide a compact layout and light weight support frame design • Plastic (Polypropylene) filter plates, for good chemical resistance and light weight • Fully automatic control system with load cells and patented weighing system for process control. • Fixed hanging filter cloths with few moving parts, makes low maintenance costs. • Fast and easy cloth changing • The VPA-membrane technology means low energy requirements = low dewatering costs. • The VPA pressure filter is originally developed for use...

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Simple mechanical construction The Metso pressure filter is a heavy duty machine, developed for filtration of metallic minerals, industrial minerals, coal and tailings. The filter has simple mechanical construction and design, with few moving parts. By using a pulling hydraulic cylinder system for closing and sealing the filter plate pack, we can provide a compact layout and a light weight support frame design. Polypropylene filter plates are used for good chemical resistance and the light weight. Low dewatering cost with the membrane technology The pressure filters use a rubber membrane in...

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Smart fully automatic control system The Pressure Filter is controlled by a system consisting of a PLC connected to a PC screen, built in a well sealed and well insulated cabinet. All control logics are implemented in the PLC. On the PC monitor the lter operator can follow and control the lter operation and information such as settings, statistics and alarms. High unit capacity By installing the Metso Pressure Filter on load cells connected to the PLC a multitude of data become available. The weighing system provides accurate production information, and can be used to optimise the...

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The complete Metso VPA or VPC Pressure ilter installation can be arranged in several ways and the table belove is for guidance only. F Detailed nstallation drawings are available from Metso and are issued with quotations or upon request. i Dimensions Model H mm (inch) L mm (inch) W mm (inch) Weight Power** (empty) motor) (hydraulic ton high kW/hp low kW/hp VPA 10..-12* * 1012, 10 = filter chamber size10x 10 dm (40x40 inch),12 = number of chambers ** High = high pressure stage, Low = low pressure stage Pressure filter vpa

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The pressure filter plate plate pack is locked under pressure by the high pressure hydraulic pump. Feed slurry enters the filter chambers through the top-feed ports. Filtration begins immediately on both sides of the chamber. The filtrate is drained through the four ports of each chamber. The double sided filtration gives speedy build-up of the filter cake and a short filtration part of the cycle. When the cake is formed it is stabilized by inflating the rubber membrane on one side of each cake. This is normally a short part of the cycle and is beneficial for the dewatering economy and...

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Cake discharge Cloth washing When the cakes are ready for discharge the cake chute door (drip tray) is retracted and the filter opened by actuating the high capacity hydraulic pump. The filter opens at a rate exceeding one chamber per second. With the plate pack still in the open position the cake chute door (drip tray) is closed and the cloths are rinsed by the spray nozzles in the cloth suspension bars. The cloth vibrators may be actuated during the cloth washing. The cloths hang freely from the suspension bar and the cakes are released at the same rate. In the fully open position the...

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• Metso Minerals Industries, Inc. 2715 Pleasent Valley Road, York, PA 17402, USA, Phone: +1 717 843 8671 • etso Minerals (South Africa) (Pty) Ltd. M Private Bag X2006, Isando, Johannesburg,1600, South Africa, Phone: +27 11 961 4000, Fax: +27 11 397 2050 • Metso Minerals (Australia) Ltd. Level 2, 1110 Hay Street, West Perth, WA 6005, Australia, Phone: +61 8 9420 5555, Fax: +61 8 9320 2500 • Metso Minerals (India) Pvt Ltd 1th floor, DLF Building No. 10, Tower A, DLF Cyber City, Phase - III, Gurgaon - 122 002, India, Phone: +91 124 235 1541, Fax: +91 124 235 1601 • Metso Perú S.A. Calle 5 Nro....

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