Equipment Description:Bale Pulping
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In a basic Stock preparation system the incoming raw material normally arrives in bale form. In most papermaking applications this would be Pulp bales of a uniform size. These pulp bales need to be converted from a solid form to a pulp stock in order to be treated and transported and finally converted to a sheet on the Paper or Tissue Machine. This job is done by a Bale Pulper. |
Slushing: Another term for Bale Pulping. Pulping: A term for converting a raw material into a usable suspension. |
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Bale Pulpers normally operate at consistencies around 5% although they can operate commercially at any consistency up to approximately 8%. They are normally made up of a Stainless Steel fabricated vat with a rotor element for keeping the screen plate clear from blockages and for providing mechanical energy to break down the pulp bales. A specially designed, powerful motor and gearbox arrangement is needed for this machine. Pulping times depend on the raw material used, the temperature of the water, the consistency, the energy put in and the chemicals added. It is also possible to pulp bales in a horizontal pulper similar to an under machine pulper when height is limited although consistencies are generally under 5%. The rotor used in bale pulpers is of a flat design. |
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