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Page 22 of 39
<br /> 2
<br /> Introduction
<br /> Cytec has developed a novel family of collectors designed for U*A-tff I Lk)AiAiA vl-A.jL:..LiP JU hALA Liv>-I il.J(Ju
<br /> the flotation recovery ofprecims and base metals from primary 1;Vii
<br /> and secondary ores.This family of collectors is based on the sumps,conditioners,regrind,etc).
<br /> novel chemistry.MAX601,13",which is a functionalized U C>L->1 A I Li OAF A>kiVL];T>,kb V1 HJUMILA-A is LAI
<br /> dithiocarbamate.This new chemistry is offered underthename I llk-,]A-.X)0: A ("ri fill likvflf.1
<br /> ITV!Vi�i ir :1 W11 AA
<br /> AER0'MAXCA)LYm900 promoter and mineral-specific in the rougher or cleaner circuits.
<br /> formulations,the HERO MX-900 promoter series,developed using the FLOTATION MATRIX 100"approach for flotation U FAii..k i..�:I it u VA ';..ICI ILi vJLll>LjLL Lv
<br /> recovery of Ao IVI"A >[:, 4(Aiv[ M metals than traditional
<br /> collectors;this is an important advantage in circuits
<br /> U M n-0-,fi0i.lk vAn n (A.]n>Ab 1,F,-r F-AiA vAii)F, with shorter residence time.
<br /> --ok...'viAL 0A pyrite,auriferous arsenopyrite and other
<br /> U I 1-ok.(li,;kivr,.CiAp Lv-1 ri-E j F--)A i',A VE,U-4(ck 1 ii(,>Ai EV-Jik*
<br /> .old-bearing sulfides)
<br /> U EvviVlf-.Ui.lik-k>I Aq juvjV !u> lelp c r ciik,E-Ai A
<br /> U GFI Vj 1«4(iA U---AA vAF.n V.-IwiAE1 1119'17 AiA' V:71l7((--Ai'
<br /> U f-V.-qiD(j>POiA vA J AA 1Ui A01-vrTiA>0' to traditionally used collectors such as xanthates.
<br /> ouiA>t-:lJv-V:.AiA U-GM 0-1.ikk v.A!.�L>0-,AUiil1 i.jcAi,.I'i'Avl]iY11,nt'llPf.-,Ooki-,-A>((,>Ai7>7 A'i(((---Vi[*-i'.11v,-',A
<br /> -iv -AiA xanthates.
<br /> MAXGOLD chemistry is a sustainable alternative to the U,EYViul-li-I i Vf-:]D Mflk v]A L0:1 D T\OCvl'i v]l Ci,-L,LE C>J
<br /> traditionally used sulfide collectors such as xanthates.Some ((AiV[ ;'OTX
<br /> benefits of the MAXGOLD product line are: metal values including free gold,electrum,and tellurides.
<br /> u r-lip"Ai u lu&J,A]cr U E�ViDCiCiVtl-':JiV1EAv0AC0jA0>E'Mo
<br /> >vv,.]A' jAiAiA -_j
<br /> >4
<br /> v.-JiYjLC 0 1 ID 0 0'1.A-1 F-)' -10iAvA1- -1 C 0 , : 0 xi ,
<br /> Vr.1,lT>APV[1FlFiVl7A
<br /> U/1jiI)V>1 I Li'i,'Ai"UAMI 11 Ll L I i I I:-U LTC>7,LiOAi'.,i F.r-C,Fi A>l A-x)0r.ia;Pie nn vmAn
<br /> V l'i Ii 'iAA'lA Aj>jit >-f R: I i v1HY-I'Vi LA improving recovery of precious metals
<br /> of V'1>11::ii L>;:,I. '/"!r6 I 1-i AiRol lAiAi,,)ilA and gold-bearing iron sulfides.
<br /> A-1 C.I Wki ia A I U-1,L:>7 P.kilioc.ki,VEA
<br /> V>,Au>ii;V improved reagent handling also provides Case Study
<br /> significantly less chemical exposure toproduct.
<br /> Ll /uip ('AzAll-ri iI16AT>;-Ji,:i IJA A&aAl-l-lik
<br /> Overview
<br /> i &>1 IlloAll;IW-i I performance at lower A plant trial was conducted in a large epithermal gold
<br /> dosages than thetraditional collectors. operation located in North America thatwas facing significant
<br /> losses of gold in fine particles.Based on the FLOTATION
<br /> MATRIX 100 approach forreagentsel ection and optimization
<br /> U/L-i[.A,ki,ovi''[.-;,k.-Ii>;,..j.,k(..i iA>,-,Ai..AiA, iu
<br /> Ai*OVi'residual reagentconcentrations in the concentrate AE.."MA8G"LD I lad-AE."N18M ad&
<br /> and tailings.This,in turn.provides significantly better promoter as part ofthe chern icall system,improvements to
<br /> environmental profile over traditional collectors. the performance and significant benefits to the process were
<br /> JLhLC i' i 01 -,A,A i>)i L; L �J JU V�-] 1((>Ai' L:L jiki-,u,
<br /> In add ition tothe above I isted benefits,MAXGOLD chern istry At t, 8>i lil iA-*A8,V
<br /> has been shown to offer the following improved performance
<br /> characteristics in the flotation plants: Process Parameters and Flowsheet
<br /> U Dir1[T7lAiA1ii'Ai1,0Ai-DiAA -if-, (<-9>F11 The circuit was composed of SAG and ball mill in closed
<br /> IJaiA Ai*0Vi'variability in plant recoveries, V^AV6ni&-J-7J>((nAAikF,M-1i Cvfxd '/-7-i
<br /> and improved overall gold recovery of 24%or greater. il Al All agravity concentration circuit which thetailsted
<br /> li A}.,kiiLLk((AJv:J1Ji if J>L Al>U>A'(4AITOViA] the flotation.The collector was added to a conditioning
<br /> sump prior to the vi;..,l-+-..':
<br /> i,k<,iv 1>1,; ;P -J vt—kvoul>d,i Jr V1 L:1>11.1-lu
<br /> xanthates. (,'--..A«iAv A_r I J>lOA>-joll
<br /> . )fox r I>..-1 I-V i I jFA,mi V1
<br /> -Qx q nxit OA F
<br /> u6jApivvivii-ti nn iFivF.,ni-4nr.1.-.:
<br /> AAiI-!I((PA I.h:11 VjCVi-:-Ak>ii
<br /> mildly acidic and neutral circuits. reported to a cyanide leach.
<br /> U CX!-,(iAAi:-j LAU:>'<<HV-:Aij 11-10A Lli V,:J Li i iA'.>;J.'J--,A Vi 1:Yftifok I i l I>Vl U:I Al- I
<br /> OAi'v Vu(((<i/kE)UL-':-lAiA jv{d)EI L]v AE."M8E0dx-..j'f;5 b LvAE,"M8: jAd
<br /> 1
<br /> "vOrJE]Ai<(U>ViEiOlvi!Axi'L'iov*AS I-iV001>E
<br /> VI-Avorl I vn A V:-1 6i eiiEk
<br /> Page 2 of 4
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