Show FlOTATION PROCESS IS f GAINING IN IM T FAVOR v NO at present s Is Is of or greater in- in o tho ho mining and metallurgical Industry in industry In- In than the flotation lotton process for tor In Increasing Increasing In- In crean creasing the extraction of or metallic values from froin from ores and for the recovery recover of values torl formerly l lost st when gravity gra za iy methods of con concentrating ores have been used For this hits reason tha department of or metallurgical research of ot the University in cooperatIon co cooperation co- co operation with the United States bureau wih of mines mine is paying particular attention to this subject Dr D. D A. A Lyon Jyon metallurgist for tor the United Unie States bureau of ot mines and metallurgist metal metal- in charge chare of the department of metallurgical research of the University of ot Utah and O. O C. C Ralston recently re returned returned re- re returned turned from rom an extended trip in the Interests In Interests in- in of the flotation work which Is be beIn beinS being be- be In ing inS conducted by the department of metallurgical research and the te bureau of mines On 01 this trip they attended the fret first gathering at t Lawrence Lwrence Kam Kan o of met metallurgists and mining men to consider exclusively th the tha rapidly growing subject of flotation The University of Kansas at Lawrence wrence l. was was was' selected elected as the meeting place of ot the conference because of the pioneer loneer work of its is division of state chemical research In tn Investigating the application of ot notation flotation of zinc recovery in the state of ot Kansas Kansan Kans fn Tn addition additon to attending this conference Mr r. r Lyon on and Mr Ralston Raston visited flotation flotation flota flota- tion pla ts and held conferences with wih mining and ad metallurgical men of Missouri Kansas Colorado New Mexico Texas Arizona and California They state that on this trip they found that there are between and plants west of the Mississippi that tat have already alread Installed the flotation process or else have experimental experimental mental work under way In the Joplin district where about OO zinc lead-zinc mills mis are Ire in operation it Is Js probable that flotation flotation flota flota- flotation tion will wi ultimately succeed in saving the values contained h In th the slimes which re- re suit In II treating th the ores a ag they are now milled miel r Inspiration Plant PInt Active Tn In Arizona the In Inspiration plant pant was as just putting into operation its is last section section sec ace tion lion of ot flotation machines machine so that by now it i i Is Is' probably milling tons fons of ot ore a ada da day alt all alot of which Is ti dated by flotation One of the tho to problems which has been given Riven especial attention In the department depart depart- ment of ot metallurgical research at the University ty of ot Utah during the past year has been that that of ot floating tho values values' contained con con- lathed in carbonate ores ores At the Inspiration tion ton plant as welt well wel as In In other plants the flotation of oxidized forms of copper for use of or soluble sulphides in water seems to to be successful on everything except silicate of or copper On account of ot this fact many of the companies o P are now leaching h r l rai ai all the tho oxides of copper r rather t than at attempt attempt at- at tempt to float oat them thelA al along ng with the sul sul- sul- sul 4 c The flotation plant at Magna also lias has had considerable success in the flotation of oxide forms tors bf be copper At Bisbee a surprising amount t tf f r carbonates carbonates ct- ct car car- of lead has lias been developed during the mining mining mining- of the re bodies Oodles in hat that district district The Te milling coPle of these carbonates carbonates carbonates car car- of lead lea presents a problem andas and andas andas as the department of ot metallurgical research re research te- te search of ot the University of Utah Uth has bad had vey very good goo success in the lead c carbonates 8 samples of or tl this material were lor runner experimental wor worn wor In view of or the research work worl in m flota- flota ion ou it that tat Is la being carried on by br the de department de- de C of metallurgical research In co cooperation co- co operation with wiH the bureau of mines this trip has proven unusually helpful in tn carrying cryIng forward forwar the work the he work in hand The work of ot the deportment department on this this problem problem Is attracting wide attention and receiving the commendation of ot all al investigators and mining and metallurgical then men Interested in the results that can be obtained b by notation flotation folton which as befOre beCOre stated is be becoming be- be coming one of or the vital vial factors in the tte tle economical al op operation of the minin milin mining and II metallurgical lu lII Industries u |