APPARATUS FOR PRESSURE LEACHING Russian patent published in 1994 - IPC

FIELD: apparatus for pressure leaching of ores and concentrates. SUBSTANCE: apparatus has housing, central pipe, branch pipes for supply and discharge of pulp and steam or gas. Arranged coaxially in lower portion of central pipe inside it is bubbling device for steam or gas which is made in form of hollow cylindrical-taper reservoir connected over the lateral cylindrical surface with steam or gas supply branch pipe and provided with widening taper nozzle at the top fitted with cover and with drain pipe at the bottom whose lower end is open and does not reach the bottom of the apparatus. Lower end of central pipe is arranged at a distance of 1 = (0.3-0.5)d and bubbling device is arranged at a height of h≅ 2d from the lower edge of central pipe, where d is diameter of central pipe; pulp supply branch pipe is inserted into steam or gas supply branch pipe. EFFECT: reduction of steam of gas consumption by 1.5 to 1.8 times for creation of airlift circulation of suspension in autoclave apparatus. 3 cl, 5 dwg