Traductions en contexte français - anglais

A method for causticizing green liquor in an alkaline pulping process, advantageously in a sulphate process.

The invention relates to a method consisting in pre-treating wood chips before pulping and bleaching with basidiomycetes mushrooms from the Bjerkandera adusta, Phlebia radiata, Pleurotus pulmonarius or Poria (synonym Ceriporiopsis) subvermispora species.

In the case of low liquid solid ratios i.e. below about 4:1 further aqueous liquid is added to the reaction mass after pulping to aid filtration and draining.

The inventive method can be used to reduce the pitch deposits and to produce good-quality paper pulps having a low lignin content, thereby making savings in terms of pulping and bleaching energy and reagents.

At Dendermonde, untreated pulper rope waste is being fed into an UNTHA XR3000C shredder via a ceiling-mounted claw grab, at a throughput rate of five tonnes per hour.

New research showed that these hurds could be used instead of wood in mechanical pulping, and that this would drastically reduce the cost of making paper.

New research showed that these hurds could be used instead of wood in mechanical pulping, and that this would drastically reduce the cost of making paper.

Offering a concluding point, Johan said: “Recycling can become a costly and complex process for paper manufacturers, especially when handling waste such as pulper ropes.

Two UNTHA XR waste shredders are now in operation for VPK Packaging Group in continental Europe, shredding pulped ropes as part of a closed loop paper production process.

UNTHA’s sales manager Daniel Wresnik, who was responsible for the project from the outset added: “Pulper rope shredding is a notoriously difficult, heavy duty operation which requires a robust and reliable machine.

Two Untha XR waste shredders are now in operation for VPK Packaging Group in continental Europe, shredding pulped ropes as part of a closed loop paper production process.

A method for causticizing green liquor in an alkaline pulping process, advantageously in a sulphate process.

The invention relates to a method consisting in pre-treating wood chips before pulping and bleaching with basidiomycetes mushrooms from the Bjerkandera adusta, Phlebia radiata, Pleurotus pulmonarius or Poria (synonym Ceriporiopsis) subvermispora species.

In the case of low liquid solid ratios i.e. below about 4:1 further aqueous liquid is added to the reaction mass after pulping to aid filtration and draining.

The inventive method can be used to reduce the pitch deposits and to produce good-quality paper pulps having a low lignin content, thereby making savings in terms of pulping and bleaching energy and reagents.