Show bubble force makes billions fortunes extracted daily from froth by treatment of low grade ores GREAT SAVING OF COPPER knowledge of colloid and organic Cherni chemistry note necessary ay for fee the flotation millman work for far to a profit few aw york billions are heing being added to the worlds world a wealth by the forms forces bt at w borte k 11 in the no soap P bubble the flotation method of eulac I separation operation by which every day in the year fortune fertile art are 1 literally extra extracted led from troth 1 Is ducth now coa g so powerful an joe influx coca on mining operations in this and other countries o that hint according to co cc lambla university authorities the tu in ture 1110 of 1 copper production and there fore or of the electrical industry largely hinges binges on bob bubbles im th the e pro process ces 0 of f ore co li m ration tl n has zm ant at always b been n 1 considered 1 d d I 1 important 1 ant in mining e I 1 e orme schools and it the file flotation process Is 11 a leading ailing factor in adon laboratory mr practice at 0 columbia where the ore dro dressing laboratory Is now un im d cpa expansion aca A according 1 to both bell dun dean conge B pegram hirram of the columbia school of vines Engin engineering cering bad and and arthur hur F T taggart n glaira p professor fear of ore drebing abig the he advent t of flotation has ban worked a revolution in hi mining meth oil od the word bubble used urd in codere with mining properties torm eriv referred to III a kind of financial management which fell could hardly be tolerated I 1 in these it dry and ad nober her ders but bill 1 in 1 the he last a few fee epars bubbles bubble be hae c taken on a new and more important significance tor fee the larger part art of the mining 1 in daure raid mid dean premium pegram tim the most important problem of the mining en pincers Is usually bow to concentrate ux fial liuo III the to mineral cal in low gs grade a ore am t to such aking an extent that the working of the ore will he be profitable A precess hns has b been on developed which bich applies particularly to all sulphide ores arm and th these the e include most 1111 of if the for copper per zinc me and I 1 lead it ac orea bd 1 in which vinto h 0 the a ores mm mav be boom beautifully fu 11 concentrated by the action arbic of 11 fine im bub b his bleg of at air r attaching themselves to the Par particles dels of mineral finely ground and mixed with water e separate p at sand panel and 1 froth 1111 th the bubbles babbles with I 1 the he sulphide filp hs aln in era cut then else to th the e top a an a thick if ick froth while the sand band mill and other worth les leas material sink to the bottom of the reisel 1 tills this notation p prows has not of only iv made mad much more profitable the working ork 1 ng of the better grade of copper bloc 1 at and lend lead ore but has also made mad 11 veri profitable the oco w klait of ores which inert ly could not have been handled without serum actual I loss Is s the whole hole secret of the bubbles ot of air r gathering up the mineral farm particles clea rod and leaving the send sand depends upon treating the finely crushed ore in water with one a of arloua chemical sub stances to among cheji the of oleic lie acid and pine off of onty only a very small amerett of the oil 11 to Is nece P leas the than 1 per rent cent b br of the amount ot of min eti deml that Is s la in the ore after the proper reagent client has been added to the water and the finely crushed ore am air Is introduced into it either by heating floating it in with jtb a stirrer or by forcing it in through fine pores imms in the bottom of the insi ins I or any way war in which to bring fine bubble bobbles ot of the air into intimate outset with ith the fine lar lilli of the ore hie separation operation 1 la 1 1 1 chourp complete 1 of the mineral moral nic go bubblo beb ing to B the top I 1 in u bubbles blo for forming aning thick froth 1111 1 la collected ted bv so suit 1 able title the mad cand and other gangue material nettles quite loan dean of any my valuable mineral to the halt bottom of the vessel lessel of mur course the process 1 la mada mad to run con bonit continuously I 1 and in some mills mill a as reach much as 4 tons of mineral in froth to la separated each dv dav ailing altogether ther in 1918 there were filst to tons of ore I 1 treated by bv the flotation fmc 9 I 1 it I 1 may truly be sal I 1 that the future of copper production and ad therefore of the el electrical lri no at industry Is very larghi cepon dependent d t on the me same forces lie thai are all ot at cork work it in the slap bubble I 1 sor declared hired that the file demand tor let pe 1 dalls I its I 1 in ore dressing dresang 1 mith expert kno knowledge uledge of the design and operation of the bewildering array of machinery now is employed be has be b come a ao insistent of that school core curricula cull must net be uttered altered to fee the necessary fur essaiy essely preparatory props minty courses ore dr dressing us to Is nn im i I 1 link between mining milling and notari metallurgy xv in present day practice 1 in it alie extraction of metals boutel tac aiom the rs earth h said lit pro felmor taggart I 1 it t contis ts in a n non 0 realists rh chemical rhemuel emiel concentration ot t the valuable fim ble part of an ar ore into from a bulk bell much ini smaller callor than that ot of it the c original ore and it nt at file same mom I 1 time Is i ejection as A waste ato to of the worthless portion until about fifteen years ago most mills were ners small na me compared with present dm standard and the too ores were nere rela relatively high grade erade the ore aunt problem was ons a simple oni and it me as a result the file technical as a well as the its c ut d direction direct ecta ton of the its ore dres dressing plant could be and was if dental to tb the direction with which th the one bollt ahe I 1 he alres Str vlra of a specialist in ton eon cent ration more n ere in considene consid alerd end bara with the do clop meent ot of the large low to grade 1 copper deposits the ha importance of ore a if dross ing took a sudden budden jump these dopes depos its contain only from arout meet twenty y to p pounds do of copper per to ton of f ore r the ore b bartles die us as on lemlin discovered eon con balne talked from to mh to tons no each of such ore for economical working king ot of such euch dor deposits malts elaborate plants capable of be han d if ing from rom 5 to 40 to tons of ore am per dv dav apie necessary skillful work for profit these them plants plant required the most motta G I 1 if a profit was to be mad made from bill their operation p albal and a demand for specialists allf in con central cent ration tian limbed limned lately or broge within wiehl the last seven years the successful up application on of arms pr processes ms of froth flotation to the file treatment of thew these low loo ernde ores moss has resulted in the saving of f four to six pounds more mom copper per ton than als was formerly orly p possible T the he advent of flotation it fail called tor to a mill 11 man 0 of t much inch broader is 1 11 education than the old coc cent ration processes proc pro esset emles required A flotation mill mah man was do a working knowledge of medo me the file as newest t 1 much branch of ph physical 1 1 phenil arv 1 ln I colloid aled theno chemistry and should at alio b hare ii some a acquaintance with fh or coult coincident with the advent ot of flotation in milling 9 there them he has been a re revolution lou in t the he methods of f grinding ores ince preparatory to concen trat 1 6 in the old concentration pro processes process R ei 1 it was as IMPo impossible 1111 to treat vre verv finely ground around ore men economically 11 hence re all grinding was done with the end I 1 in c view of producing as little slime line as fu possible faile flotation however works bit beit on floeh ore are hence bruce it we wai focose on go the auto of flotation to dobie devise methods of grinding different from those at that time in use such methods being aimed oil st at producing slim allme iia cited in the of grinding machinery of re an entirely different true in iii con noboa with iab the nen nee grinding and ad flo fallen machinery there we waa norce orny d developed ishm for far and a dewit ering the taa onely anely ground prod net th alie men a sh w ho will III successfully motility handle this work to tot must t understand the file leal principles anderl underlying Ning the file op orations erat erst ions ot of or ore concentration and must t be b e 1 in addition the collateral mi engineering knowle diio ese essential d a to the dooming ot of structures and the ars 1 anatal tal th lation of machinery sufficient ent grasp p ot f the pran rin fries aples of economics and bust busl ness most to be able his to judge results from a commercial manu erch I 1 standpoint sufficient knowledge of 0 mining to understand ilane how be ors borei a are produced to the surface ft the ground and ad finally cleat lumn knowledge led i of metallurgy to inder tind the drou demands a I 1 I 1 ds of I 1 the he metallurgist na am to the character of concentrate produced Produce 1 the instruction ot of such mon in cot login lege the then should consist hit h in a f foland it tion of ahe I 1 fundamental se sciences orrea and a firm grounding in the m use as of the hig eng lien language to express ideas and to result and cholon in at arner re words worda such basic instruction us Is essential to the file training of ell 01 engi enfil beera on this foundation should be built bell a nor superstructure composed compoi ed of joics I abu to R thorough knowledge of if the im properties and occurrences of 1 minerals 1 to an understanding of the prin elplear and simpler details of the file it design in of structures structure the gri arioth generation oth and mission of power the methods of man in ing the 1 principles principle of metal lurge and the principles plea of economic suit and ball business rom finance and ad diroll Fl Fi nall roll ing some elementary element arv instruction in ID ore dressing ang the stu to lent dent should be assigned n alre firl fairly difficult problem 1 in that subject bjel which he la in expected to carry through to a conclusion largely by his own con of ft feet aud ad jeff r tn fill this problem lb there 0 r humid hould bo be time 1 in the curriculum 0 to allow the student I 1 to a e elect I 1 mt one or ne more clouries 1 in woul some whar other depart dp ca ment cal L P lit I 1 in pha or such courses being alon along the file line of the problem under invests ration gotten |