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Mechanically disintegrated wooden pulp blasting procedure (Machine-translation by Google Translate, not legally binding)

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  • Title:
    Mechanically disintegrated wooden pulp blasting procedure (Machine-translation by Google Translate, not legally binding)
  • Description: Bleaching process of mechanically disintegrated wood pulp, characterized by comprising continuously introducing a water-soluble hydrosulfite and water-soluble polyphosphate, in an aqueous solution practically free of entrained air, in a constantly mobile stream of mechanically disintegrated wood pulp, practically free of entrained air; the polyphosphate is introduced into the pulp at a point not appreciably posterior to that in which the hydrosulfite is introduced into it, through which the hydrosulfite and the polyphosphate are mixed with the wood pulp, during the bleaching; submitting the pulp, the hydrosulfite and the polyphosphate to a vigorous combined stirring, by means of which the hydrosulphite and the polyphosphate are mixed rapidly and intimately with said pulp; and a propulsion that forces the intimate mixture consisting of the pulp, the hydrosulfite and the polyphosphate to circulate in the form of a constantly mobile stream, characterized by being of the aerodynamic type, along a closed and air-tight passage, comprising conduits vertical for the fluid, until the desired bleaching is performed. (Machine-translation by Google Translate, not legally binding)
  • Creation Date: 1956
  • Language: English;Spanish
  • Source: esp@cenet
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