Method and System for Producing Recycled Fibers for MDF or HDF Production

A method for producing recycled fibers from MDF or HDF containing material comprising the steps of:

• receiving MDF or HDF containing material;
• steaming the received MDF or HDF containing material for a predetermined time to obtain treated material;
• subjecting the treated material to a pulping process to obtain a slurry;
• screening the slurry to remove oversize particles to obtain a screened slurry;
• dewatering the screened slurry to obtain dewatered fibers;
• and
• refining or fluffing the dewatered fibers to obtain recycled fibers.

A system for producing recycled fibers from recycled MDF or HDF material, said system comprising:

• a source of MDF or HDF containing material;
• a steaming apparatus provided with an inlet for receiving MDF or HDF containing material from the source of MDF or HDF containing material, and at least one steam inlet connected to a source of steam;
• a pulping apparatus connected to an outlet of said steaming apparatus and being configured to subject the steamed material to a pulping process to provide a slurry;
• a screening system connected to an outlet of the pulping apparatus and being configured to remove oversize particles from the slurry;
• a dewatering apparatus connected to an outlet of the screening system and being configured to dewater the slurry, and
• a refiner or fluffer connected to an outlet of said dewatering apparatus and being configured to refine the dewatered slurry to produce recycled fibers.

A system for producing recycled fibers from recycled MDF or HDF material, said system comprising:

• a source of MDF or HDF containing material;
• a pre-steaming device connected to receive MDF or HDF containing material from the source of MDF or HDF containing material, and subject it to steaming;
• a pulping apparatus connected to an outlet of the pre-steaming device and being configured to subject the steamed material to a pulping process to provide a slurry;
• a screening system connected to an outlet of said pulping apparatus and being configured to remove oversize particles from said slurry;
• a dewatering apparatus connected to an outlet of said screening system and being configured to dewater the slurry;
• and
• a refiner or fluffer connected to an outlet of said dewatering apparatus and being configured to refine the dewatered slurry to produce said recycled fibers.