22 The MMD F ully Mobile Sizer S t ation F ully M obile T he Siz er S ta tion is able t o pr opel itself v ar iably a t a r a t e of 0 t o 12m/min. H igh T hr oughput T hr oughputs of up t o 10,000TPH a v er age , and 12,000TPH peak can be achiev ed . A c cur a t ely Siz ed M a t erial T he Siz er S ta tion ac c epts f eed ma t er ial of up t o 2.4m? and pr oduc es a minus 350mm pr oduc t , r educing subsequen t c on v ey or belt w ear and damage a t tr ansf er poin ts . C ompac t D imensions and Ligh t w eigh t T he Siz er sta tion has been desig ned t o be a c ompac t , ligh t - w eigh t unit (56.2m x 12.9m x 14m @ 1350 T onnes) with a r ela tiv ely lo w c en tr e of g r a vit y , and able t o withstand v ar ious w ea ther c onditions . M o dular C onstr uc tion T he en tir e siz er sta tion is c onstruc t ed of modular c omponen ts t o enable easy main t enanc e , assembly and tr anspor t . L o w M ain t enanc e T ypically , less than 2.5% of the t otal w or k ing hours is spen t on main t enanc e . E fcien t O p er a tion U tilising an 18 metr e r adius sho v el , the sy st em is able t o r emo v e a str ip appr o xima t ely 70 metr es deep bef or e needing t o r eloca t e the fac e c on v ey or . A c c epts Run- of -M ine M a t erial T he Siz er sta tion ’ s hopper ac c epts ma t er ial dir ec tly dug and dumped fr om the mine fac e , r equir ing no scr eens or pr epar a tion equipmen t . F le xible L oading A r ea T he hopper is appr oachable b y e x ca v a tion equipmen t fr om a t least 220 deg r ees . L ar ge C apacit y H opp er T he hopper can hold up t o 350 t onnes of ma t er ial . Regula t ed P r o duc tion R a t e T he v ar iable speed MMD A pr on P la t e F eeder enables the sta tion t o c on tr ol the pr oc essed pr oduc tion t onnage . A c cur a t e M a t erial D ischar ge T he dischar ge c on v ey or is able t o luf fr om -7 t o +15 deg r ees and also slew 75 deg r ees either side of c en tr e t o pr o vide ac cur a t e ma t er ial dischar ge . N o O nb oar d O p er a t or T he siz er sta tion can be c onfgur ed t o r equir e no on boar d oper a t or when in nor mal oper a tion. T r a v erses S t eep G r adien ts Negotia t es up t o 10% inline g r adien ts and 5% cr oss g r adien ts on most t er r ain. Simple O p er a tion A ll pr oc esses can be c on tr olled and view ed fr om the c on tr ol cabin, c on v enien tly loca t ed a t the t op of the sta tion. Easy A c c ess A c c ess t o the sta tion is b y c on v enien tly situa t ed landing poin ts . A ll par ts of the sta tion can be view ed saf ely , ev en when in oper a tion. T he F ully M obile Siz er S ta tion has man y a ttr ibut es and f ea tur es t o enable c onsist en t efcien t oper a tion of the c omplet e sy st em. List ed belo w ar e some of the key ar eas: MMD ar e the inno v a t ors of a ne w pr oduc t , which allo w s the fe xibilit y of a mining sho v el t o be ma t ched with the c ost e f e c t i v e n e s s o f long distanc e c on v e y or haulage . T he 10,000 T onnes P er Hour F ully M obile Siz er S ta tion is a ne w , c ost ef ec tiv e eng ineering solution, which enables e x ca v a ting , sizing and c on v e y or haulage pr oc esses t o tak e plac e in unison, along the mine fac e , adv ancing as it pr og r esses . I n a t ypical applica tion, the Siz er S ta tion w ould be positioned bet w een the mine fac e and o v er land c on v ey or , and the hopper dir ec tly f ed fr om the fac e with run of mine ma t er ial b y an e x ca v a t or or mining sho v el . M a t er ial is then dr a wn up the v ar iable speed MMD A pr on P la t e F eeder , and dischar ged in t o the MMD Siz er , r educing the ma t er ial t o a defnable pr oduc t siz e suitable f or efcien t long distanc e c on v ey or haulage . M a t er ial is subsequen tly dischar ged fr om the Siz er S ta tion, via the dischar ge c on v ey or and in t o a hopper car tha t tr a v els along the o v er land c on v ey or . T he Siz er S ta tion and the sho v el mo v e r epea t edly back and f or th along the mine fac e un til the en tir e mine has been e x ca v a t ed . T he modular assemblies include: • MMD 1500 S er ies T win Shaf t M iner al Siz er • MMD D9 A pr on P la t e F eeder • T r ansf er c on v ey or and dischar ge c on v ey or • M ain Chassis and Superstruc tur e • R ec eiving Hopper • C r a wler T r acks A n ob vious adv an tage of this sy st em is the elimina tion of haul trucks in a truck and sho v el oper a tion, wher e trucks ar e used t o car r y the ma t er ial t o the pr oc essing plan t , or out of a mine dump ar ea. T his pr oc ess is no longer nec essar y as ma t er ial can be loaded dir ec tly in t o the mobile siz er sta tion, and pr oc essed a t the mine fac e , simplifying the sy st em and optimising pr oduc tion.