METHOD FOR PROCESSING WASTE IN FORM OF SLUDGE-SCALE FORMED IN PULP AND PAPER PRODUCTION AND DURING WASTE PAPER RECYCLING Russian patent published in 2024 - IPC D21F1/00 

FIELD: processing fibre-containing waste.

SUBSTANCE: method of processing waste in the form of sludge-scope includes drying waste having a moisture content from 50 to 61.3%. Waste drying is carried out simultaneously with its dehydration at the stage of thermal dehydration at a temperature from 200 to 500°C the help of equipment in which the heat and mass transfer process is carried out. After which the waste thermally dehydrated to 6-8% is fed to the stage of fluffing into fibres and, at the same time, crushing the product using crushing devices. Next, the product crushed into powder form enters the stage of separating the crushed product according to the size and length of the fibres in the composition of the mineral mass.

EFFECT: creating a universal and effective integrated technology for processing fibrous waste in the form of sludge-scope generated in the pulp and paper industry and during the processing of waste paper, suitable for obtaining products that are environmentally friendly, obtained in large quantities and have an expanded range of applications used in secondary production as feedstock for the production of other final products in various industries.

7 cl, 1 tbl, 1 dwg