| Show I NEWS OF THE R MINING WORLD I PROCESS IS OF DAY IN IM MINING r i ton of ot the day In n mining and Is the phenomenal success of t flotation process Introduced as an anZ annet Z net to the old r methods of ot milling 1 J percentage of ot extraction of ot valuable l rals from ore has been raised In a way ay and many ores ores that usty could not be exploited at all k Ii V enow now been rendered commercial says Mining and Engineering Journal ing to the bane of a deadly litigation Inning the flotation notation process the mouths of I 0 practicing the new art have l he e main been closed One result or of has been that the press ha has been full l and u. u and u. u lot flotation statements me which h c could f be authoritatively f rt corrected te teh The ds are full of ot so called mill exper experts s se sole equipment e is a can a of t oil and oie ty sl n I d device Not long n ago a mine he lie Rocky mountains which previous previous- ad ad failed to command any attention t I sold on the strength of ot flotation ex- ex ent that required one hour bout to make j to the Idea of ot the gullible you 0 break down your ore e In the theand 8 cf rt and n mix I it with oil and acid c ca a and the L ls done But that Is not BO so It H is a I Implicated art The millman wants data l t. t this art not a I collection of flow- flow Mi phrases merely explaining that flo- flo n means that minerals are flo floated ted t wants l to know fully and nd In tn Il how notation flotation I is applied to i T ores lores I i some who who ha have hae e et t I experience in the practice of ot Iota ilota- rand and have no nD property interests that V t be endangered by la lawsuits are aro now f ning to take up their pens pene and the I ture ur Df of th the subject is at last gr grow grow- l ft egr I I I in a useful e i and authoritative o i e way r Is e ls no doubt that henceforth it will willease I ase rapid rapidly ease Iter t r all all flotation notation Is not such a mys- mys t us subject as many pretend It Is a T lya species of concen- concen I Ion on In n ordinary methods the Y 1 Is caused to sink In flota- flota is caused to rise The great eat ad- ad iMage Stare of the the- latter method lies in Us Its of ot th the slIme problem I limed e b at I all events Ore crushed is U now d dd d- d deft deliberate deliberate- very eft fine fine- rand gand the minerals to be separated are eby by fully funy released which together hother 1 ther features of the process enes enes en- en es phenomenally a high recovery to beThe be 7 Aie f- f The advantage of ot the process Is ts by the raising of ot the old perI per- per I tage of ot extraction in ore dressing dresing 65 cent to 75 per cent to the present lit lit- figures r of ot 65 5 per cent to 95 55 per cent |
