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Phosphate matrix, taconite tailings, alumina red mud, coarse coal, rock salt, manganese nodules, crushed rock and foundry sand have been tested in the lab. These have been pumped at concentrations as high as 70 percent by weight and at flows up to 30,000 gallons per minute (7.000 cubic meters per hour). Open-sump or closed-loop pump water performance testing is possible in the following diameter loop sections:
Slurry pipeline and pump testing is available in separate, specially constructed diameter loop sections of:
Several of the systems are equipped with glass sections for observation of deposit velocities. The glass sections are located in special sections of pipe that may be inclined in any position from horizontal to vertical. The inclines may be varied during a test. Each slurry test system is equipped with its own pump and motor driver. For example, the 18-inch (46-centimeter) system has an LSA 18x18-44 with a 2,000 hp (1.500 kilowatt), 4160-volt motor and variable speed driver with 450 and 270 revolutions per minute. Maximum flow on slurry is 30,000 gallons per minute (17.045 cubic meters per hour). More than 40 precision transducers are used with the specially configured minicomputer data acquisition system. Each provides an analog output that is converted to a digital output with the A-to-D conversion unit. Redundant transducers verify every reading. To measure flow, each system has its own magnetic flow meter, Doppler flow meter, bend meter and orifice plate. Power is measured from both a watt meter and a torque bar. Concentration may be measured using a nuclear density meter, automatic sampler or inverted "U" tube. A minimum of four temperature transducers is available, and 13 high-accuracy, capacitance-type pressure transducers measure a variety of pump head and pipeline loss readings. For more information, use this form or contact our Engineering Department.
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