FUR EXTENSION AND DRESSING METHOD Russian patent published in 1998 - IPC

FIELD: fur and leather extension and dressing at pulsed pressure. SUBSTANCE: method involves extending and dressing fur in two stages: fur is initially elongated on spherical surface of radius 2π times lesser than its length, then dressed and dried along width on forms. provision for increased linear length and width sizes of components are introduced into the canal of lance through its upper halve. In this case, ratio of kinetic energies of oxygen-coal jet and compensating components is (0.5-1.0):1 and ratio of volume intakes of process oxygen and compensating components (natural, coke, blast-furnace gas, steam, nitrogen) equals (0.6- 1.0):(0.2-0.4):(0.3-0.5): (0.4-0.6): (0.1-0.3): (0.2-0.4), respectively, per 1 kg of coal-dust fuel. EFFECT: increased coal-dust fuel utilization efficiency.