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FLSmidth USA, Inc. <br /> 7158 S FLSmidth Drive • Midvale • UT 84047-5559 • USA M ' D T H <br /> Manifold valve to <br /> recessed chamber <br /> Double-Sided �� v Recessed 20 Liter Pail <br /> Diaphragm pump Chamber <br /> mj <br /> 3-Liter Metal <br /> • - �� container <br /> Manifold I Recessed Hydraulic pump oil fill port <br /> recycle valve chamber <br /> Hydraulic pump gauge <br /> Membrane Squeeze Hydraulic ram <br /> Equipment Set Up -� Hydraulic hand pump <br /> Hydraulic hose threaded disconnect <br /> t <br /> -- ---�---- High pressure hydiauhc hose <br /> Figure 3: FLSmidth Testing Setup - Filter Press <br /> The test apparatus allows for variations in fill pressures, cake thicknesses, fill times, air <br /> blow times as well as air blow pressures. This in turn facilitates accurate design and costing <br /> for the most optimum filter press. <br /> The filtration tests were conducted using filter media designated 18-oz. Felt with an air <br /> permeability range of 0.9-m3 of air volume per mz of filter area per minute at 125-Pa. This <br /> specific filter media is typically effective in similar processes and exhibited good <br /> performance based on filtration rate, filtrate clarity, cake release, and resistance to blinding. <br /> The recessed chamber test begins by pumping feed slurry into the double-sided chamber. <br /> FLSmidth records filtrate production and the resulting pressure profile with respect to time <br /> while the chamber fills. Figure 10 present this for the zinc rougher tailings. When the filtrate <br /> flow subsides, the cake consolidation portion of the test is complete. The graphs depict this <br /> scenario indicated by the curve flattening. <br /> Pagel 9 <br />