METHOD OF PROCESSING PAPER Russian patent published in 2014 - IPC D21B1/32 

FIELD: textiles, paper.

SUBSTANCE: paper is made from pulp containing wood fibre, to which the binder and clay is added, and then moulding to sheets is carried out, initially waste paper is sorted according to its classification, is then is loaded into an autoclave for dispersing, removing dirt, oil, typographic ink, and other foreign materials, then it is impregnated, bleached to form pulp. After the pulper the processed mass enters the column for wet processing where soaking is carried out. Then, feeding is carried out to a sieve, where the ejection of mud and foreign materials is carried out, after that flotation, then filtering, washing, dehydration and degreasing, and then the final processing by bleaching with the chemicals release, and the column for wet processing is made from the housing with the inlet pipe for loading pulp and the outlet pipe for discharging the wetted product to the sieve, which is made in the form of the conveyor belt, and inside the housing the perforated inclined cylinder is mounted for the process of pulp humidification with nozzles located on its lateral surface, connected to the collector of water supply. In the lower part of the perforated inclined cylinder the spring-loaded valves are mounted for automatic discharge of the final product on the sieve.

EFFECT: increased productivity and quality.

5 dwg