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BAI,I,MII,I, andqurliq controlldorutodeslhroughout dtc rofld. 1\e\itsnrd h\ tl. hundfur rAeb\ ccnrcntLunrpanies the counldo$nendit I lt".l]r hc usd In (. rul,rtift lhr grindrhr||h0f all ofc Thedigitalcornterindicales .l-., slrul'nff rlrcdrfLrrdri\r ilr mrlu.lrncmn)fattcnti0n durinsthistimejs notreouired. A jogingbltlon is positioo possible to lhc drun ior beding md urloadirg. A rlr.tnudljog is posilioning fofpfecise lrolidcd

StandardFeatures . .\ll ballmilk comenandard$ithooe{4 5 lb. ch.ugc0f lon hdls.ifon slmd, fcccivingtm lUldhmd screenpm. . lil cir-sl ifon dru l

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F.C. BOND BICO BALL MILL The F.C. Bond Ball Mill is a smalluniversallaboratorymill usedin calculatingthe grindability of all ores. GRINDASILITY IS TIM NUMBER OF NET GRAMS OF SCREENIJNDERSZE PRODUCEDPERREVOLUTION. This Ball Mill canbe usedcontinuouslyor it canbe usedfor any numbq ofrcvolutions, accoding to the type of grind desired. For instance,the Frcd C. Bond GrindabiliryTestsw€re madein the Bico Mill rurmingat 70 revolutionsper minute,with a chargeof285 iron balls rangingin sizefrom 3/4 inch to 1-1l2 inch in diameter,andweighing approKimately20,125 grams. 700 CC ofminus 6 mesh,stagecrushed,dry feedwas usedandthe circulationload maintain€dconstantat 250%by adjustingthe numberof revolutionsfor eachgrinding period.

BALL CHARGE DETERMINATION Becauseofvaxiationsin ball size,no exactnumberofballs ofeach sizecanbe specified. The ball chargeis preparedby startingwith 285 balls, consistingof approximatelyequalweights ofvarioussizeballs. Thesesizesinclude:3/4 incbrT18irrch,1 inch,1-114inchand 1-112 inch.....about400 gramsofeach size.With 285 balls alwayspresent,someballs ofone size are removedard replacedwith the next sizeof largeror smallerballs. This is continueduntil the total rveightis at closeto 20,125gramsaspossible,making the last adjustmentwith the smallestsizeof balls. Do not removeall the balls of any one size. Oncea suitablegrinding chargeis preparedfrom onegradeofballs, count andnote the number ofballs of eachsize. Otherbatchesofthe samegradecanbe startedusing this count,andfirther adjustedif necessary.It is IMPORTANT to ietain the "one for one" rutio while adjustingthe final weight to maintainthe DroDerball count. continued...

OPERATINGINSTRUCTIONS

Coruectthepowetsupplyto thecontol box.Wircsarcprotuding for easyaonnection. Makesuleall circuitbreake$arcof to avoidsev€reelecticalshock. Thismachineis equipped$r'ithanautomatic counter.To setthecount€r,pressthebutton to thedesirednumb€rofrcvolutions.Theswitchhastwo positions,"RUN" for normaluse,and "JOG"to movethodrumto a desiredpositiotr(for emptyns), To loadthedrum,"JOG"thc drumAsning until it facesupwaid.Rsrnovethecoverand gasket,Insertthesampleatrdball chargeinto thedrum.Replaceth€gasketandcov€r. Setthe numbcrofrevolutionsyoudesirconthecounterandstartthemotorby pushingthestrrt contol. Themachinewill stopautomatically whentle numberofrevolutionsis reached.Again, us€the"JOG"buttonto positio[theopeningof thedrumupwadtowardstheceiling. Now, remove.the coveratrdgaskot.Agai!. 'JOG"theopeningof thedrumtowardsthereceivingpan sothesampleandballscandischarye iltto thereccivilgpan.

F. c. BONDBALL MILL CEARGE Wefird thatthequestionofcolrert bsll chargcarisesoft€uandis still yerydebatable. Backin 1960,Mr. Bondhimselfrecommended thc chargcdcscribed; 43batle- 1-ll2 inch (1.45) 67balls- 1-ll4 iuch (1.17) 10balls- 1 inch (1.00) 7l balls- 3/4inch (.75) 94balls- 5/8inch (.61) 285BALLS Totalwt. =rDx.44.5lbs. Mr. Bondhimsclfadmittcdtllat it is verydifrcult to spwifr a givennumberofballs of eachweight,andin oul mostreceniconglondlncr with Mr. Bon4 hal€coDtrl€ad€d a chsrge excludingthe5/8 ittch(.61)balls. Becausc ofthis, Bico Inc.o(pcrimrntdlycameup with thc followingfigurefor a cbrrge: 25balls- 1-ll2 inah(1.50) 39balls- l-1l4 inch(1.25) 60 balls- I itrch0.00) 68balls- 7/8inch(.875) 93balb- 3/4inc.h( .75) 285b&llr Totrt wL = apr.44.5lbs. Weirclude scveralexta ballsof cachsizesothattbechargecaub€manipulat€d to result gm in the20,125 totaln'it! 285ba!s.

BICO INc; F. C. BONDBALL.MIL,LSPARE PARTS PLEASESPECTtrYSERIAL NUMEERWEEN ORI'f,RING (.ATAI.OG # BM-I BM-2 BM.3 BM4N BM-9 BM-I2 BM-134 BM-138 BM-13C BM.13D BM.I4DO 8M.15 BM-23 BM-26 BM-294 BM.298 BM-32

NN-SCf,r?ITON DruD,with Shaffs(PleascspeciSSA.I) Covcr Haagsr Tablewith Legs Pillow Block Asb€stosGasks,t 50IIz Dgital Comter/Jogging Swibh 60 Ilz Digitsl CounlF4oggingSfitclt CouDter Brackct Courtlr hror Paowith Ss'reca ard RccaivitrgPalt ChEgeofBaUs ChainCuard Chain,oncl€agth= 29 inchcs link foi 60I{Z opaetiod Connecting Offsctlink for 50IZ opcrdion ShaftKey

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*** Sprockets arcavsilableandquoteduponrcqucat.(S/Ned IU rcquired).

1 . T OT URN DRUI I B Y }IA ND. N - _ 2 . T UR E ND O F S HA E T W T H WRENCH, ( - r ,oi T o R c 0 v E R B E HT ND c o NT RO L P ANEL )

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A BO V E EA C H . _ S E T S WIT C H ON R UN. - PRESS SIART BUTTONf / I AC H I N EW I L L S H U T OF F A F T E R NUN4BER 0F TURNS COMPLETE. , TO J O G N 4 AC H l N E ' I. P .'T S WITCH ON JOG. 2. KEEP PRESSING I ST AR T BU T T ON 0 N A N D OF F U NTIL DESIRED POSlTl0N- .' lS REA C H E D,

WIRI}.IG DIAGRAM T'\]R BAI,L MILL 50 cYcl,a 220 \DLT

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