Show A NEW TREATMENT A new method for treating trea slimes is described in the north queensland Re register bemister mister a patent for which has been obtained by mr T D dellaway Hel laway assayer at croyden the following account of it being taken from the mining journal of london the slimes are trucked down to the works and there the required quantity of quicklime to neutralize the and acid contained in them m is added as the trucks are emptied into a hopper discharging into a disintegrator the lime required per ton of dry slime varies from twenty to sixty sixt pounds after passing through the disinter disi nt brator the powdered mass is railed by a baket bu ket ic kator v ator to a top hopper diar hares into side tip trucks running ov ari r alx A cups of vats vars ovi i edah vat is a six inch centrifugal pump the suction pipe pim of which descends at an angle adie to within two fec feet t of the bottom of the vat while the discharge pipi pipe is continued down to the floor of thi th rat at where it is terminated atod by bv a right ani ang an I be nd on a swivel point so ho that the flow can aeao be directed across to any part of the vat T ahe b e vat being filled with solution of cyanide centrifugal I 1 pump is started and in a f fiew w minutes the whole mass of liquor asin is in i agitation P into this agitated liquor th P po pow dered slime is dropped truck by truck until the whole charge amounting to ten tons is delivered the agitation acri tation beino being maintained the whole time A few minutes after the e tast truck is dropped in the pump is stopped and the whole mass allowed to settle this boeru pies some twenty minutes the solution be bc ing ing left absolutely c lear clear on top pipe d with swivel joint and connected with the pipe service leading to thu zine zinc extractor boxes is then gradually lowered till the whole of the supernatant solution is dritan off the vat is then filled with the weak solution and the pump is once more set in motion in a ff few vv minutes the whole mass is once more stirred up and the first process repeated after the second solution has been drawn off clean water is added and when the mass is worked into a slurry a plug in the bottom of the vat is opened and the thin slurry runoff run off in wooden n launders whence it Is raised and delivered away by a large centrifugal pump los angeles mining review |