PLANT FOR PERCOLATION LEACHING OF ALUMINUM- CONTAINING ORES AND SINTERS Russian patent published in 2004 - IPC

FIELD: non-ferrous metallurgy; percolation leaching of ground aluminum-containing ores, sinters and other ores of non-ferrous metals. SUBSTANCE: proposed plant includes percolators divided into compartments and provided with bottoms, grates and overflow unit for draining solution to receiving chute which is mounted below percolator bottom; overflow unit is made in form of two vertical pipes mounted inside percolator and connected in upper portion by means of strips; lower end of one of pipes is connected with under-grate space of percolator and lower end of second pipe is passed through bottom of percolator to solution receiving chute. Pipe connected with under-grate space of percolator has emergency hole in upper portion located above hole connecting two pipes. Diameter of pipe connected with under-grate space of percolator exceeds diameter of second pipe by 1.5-2 times. EFFECT: possibility of performing continuous process without stoppage of plant in an emrgncy.3 cl, 2 dwg