Show The Cyanide Process Discussing a radical d departure in cy rnldalion of oren so extensively employed em-ployed in Utah the Pacific Coast Miner says saysWhere Where large volumes of solution are handled it is correct practice doubt t leFfl to have as few precipitation units as possible since this facilitates the necessary supervision at I this Important I stage of the process but where the plants handle not more than fifty tons of ore or tailings dally the writer sees great advantage In using small boxes as the cleanup that bugbear of the cyanide worker becomes a matter of absolute simplicity and moreover maybe may-be conducted daily Instead of postponing I post-poning this operation to the end of the fortnight or month the two top compartments com-partments may be cleaned up readily In the morning The zinc Is screened and the rejections returned to the compartments com-partments the consumed zinc being replaced re-placed 1 from the lower compartments fresh shavings being added to the last compartment as In I ordinary practice The slimes produced dally in a small plant are not too bulky or weighty to be handled with facility in laboratory appliances They are preferably refined with sulphuric acid Porcelainlined kettles or large evaporation dishes maybe may-be used The kettles unless overheated over-heated when the lining cracks oft answer an-swer admirably and are less liable to breakage than the evaporating dishes The residue is washed on filters the filler paper is Incinerated and the ashes and slimes fluxed In a black lead crucible cru-cible After mulling the ingot is put to one side and at the proper period the collected ingots arc melted together togeth-er and poured Into a regular bullion mould |