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FLSmidth USA,Inc. <br /> 7158 S FLSmidth Drive • Midvale • UT 84047-5559 • USA M ' D T H <br /> w� <br /> ..Y <br /> d <br /> Figure 2: Haake VT550 Vane Viscometer with Custom Vane <br /> The yield stress results are used to: <br /> • Gives the underflow limit of each thickener type achievable based on flowability. <br /> • Predict the torque required to rake the thickened mud/slurry. <br /> It must be noted that the rheology performed can only be used for thickener rake system <br /> design and is not applicable to underflow pumping and pipeline design. This information can <br /> be obtained from the qualified pumping and pipe line design engineering companies. <br /> 3.6 Pressure Filtration — Filter Press <br /> FLSmidth conducted pressure filtration tests using a bench-scale filtration testing unit. The <br /> bench-scale testing unit can simulate FLSmidth's recessed chamber and membrane squeeze <br /> chamber configurations allowing for various feed solids concentrations, pressure profiles and <br /> cake thicknesses. <br /> An image of the filter press testing apparatus is shown in Figure 3. <br /> Page 1 8 <br />