METHOD AND APPARATUS FOR ESTIMATING RELATIVE PROPORTION OF WOOD CHIPS SPECIES TO BE FED TO A PROCESS FOR PRODUCING PULP

摘要

Improved methods and apparatus for estimating and controlling relative proportion of wood chips originating from a plurality of sources characteriz ed by various wood species, in a mass of wood chips to be fed to a process for producing pulp, use light reflection-related and density-related properties as input i n a model characterizing a relation between such wood chip properties and species information. This principle allows efficient monitoring of the variation in wood species composition characterizing the wood chips to be processed, for the purpose of stabilizin g chip feeding control and optimizing process parameters adjustment.