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Apparatus and method for particle size classification and measurement of the number and severity of particle impacts during comminution of wood chips, wood pulp and other materials
Apparatus and method for particle size classification and measurement of the number and severity of particle impacts during comminution of wood chips, wood pulp and other materials
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机译：用于在木屑，木浆和其他材料粉碎过程中进行粒度分类以及测量颗粒撞击的数量和严重性的设备和方法
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摘要
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摘要
An apparatus and method are provided in which direct ohmic connection is made to a comminution device (e.g., a wood chip or pulp refiner) to obtain transient voltages, existing on the refining elements, that are directly related to fiber impacts. These voltages are characterized by severity (S) (i.e., magnitude), rate (N), rise time (RT) and polarity (.+- .P). The characteristics of these voltages taken separately and/or in mathematical combinations predict the properties of refined wood chips and pulps, i.e., freeness, tensile strength, tear, burst, breaking length and fiber length. Signal characteristics further track refiner plate wear and detect the occurrence of "critical gap" as well as the onset of plate clash.
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