 elemental sulfur. This makes solvent extraction of copper expensive as excessive amount of acid in the solution has to be neutralized prior to the solvent extraction stage.
There are several discloses in the literature for the recovery of metals, in particular copper, from a copper-bearing sulfide ores where either hydrochloric acid or high chloride concentration has been utilized. Although leaching can be performed in reduced pressure and temperature as compared to sulfuric acid processes a high chloride concentration in pregnant leach solution decreases copper extraction yield in solvent extraction and makes the process more unattractive.
WO2004035840 for example relates to a method for the recovery of metals, in particular copper, from a copper-bearing raw material, whereby the material is leached into a chloride-containing solution. The leaching of the raw material is performed oxidatively and at a sufficiently high redox potential that the copper in the copper chloride solution from leaching is mainly divalent. The chloride solution obtained, which contains copper and potentially other valuable metals, is fed to liquid-liquid extraction. In the extraction the copper is first transferred to the organic phase with extraction and then to a sulphate solution in stripping, which is fed to copper electrowinning.
US2010/0031779A1 on the other hand discloses a process for recovering copper from an acid aqueous solution containing cupric chlorides and alkali metal and/or alkali earth metal chlorides by a solvent extraction with a cation exchange extractant, comprising the step of processing a solvent extraction in the presence of sulfate ions. The present invention concerns a method for establishing radiofrequency links via a telecommunication satellite having several spots, designated multispot satellite, between at least one terrestrial station (designated as gateway) and a service area composed of a plurality of elementary covering zones, designated as cells, each cell comprising a plurality of terrestrial terminals. This type of satellite allows the use of several antenna spots on board the satellite to cover contiguous geographical zones or cells, instead of a single broad spot.
Such multispot satellites allow several radiofrequency links to be established occupying the same frequency band on different spots.
In the case of a broadband satellite telecommunication system, the satellite is used in a bidirectional manner, i.e. at the same time for:                relaying data emitted by a terrestrial station towards a plurality of terrestrial terminals: this first link of the point-multipoint type constitutes the forward link;        relaying towards the terrestrial station the data emitted by the terrestrial terminals this second link, of the
elemental sulfur. This makes solvent extraction of copper expensive as excessive sum of acid in the solution have to be neutralized prior to the solvent extraction stage. 
 There be several discloses in the literature for the recovery of alloy, in finical copper, from a bull - bear sulfide ores where either hydrochloric acid or gamey chloride concentration has been utilized. Although leach can be perform in reduced pressure and temperature as compared to sulfuric acid processes a high chloride assiduity in pregnant leach solution decreases copper origin yield in solvent extraction and makes the process more unattractive. 
 WO2004035840 for example associate to a method for the recovery of metals, in particular copper, from a bull - bearing raw material, whereby the material is leached into a chloride - containing solution. The leach of the natural material is performed oxidatively and at a sufficiently high redox potential that the copper in the copper chloride solution from leaching is mainly divalent. The chloride solution obtain, which contains copper and potentially early valuable metallic element, is run to liquid - liquid extraction. In the extraction the bull is first transmit to the organic phase with extraction and then to a sulphate solution in denudation, which is fed to copper electrowinning. 
 US2010/0031779A1 on the other hand discloses a process for recovering copper from an acid aqueous solution containing cupric chlorides and alkali metal and/or alkali earth metal chloride by a solvent extraction with a cation central extractant, comprising the step of processing a solvent extraction in the presence of sulfate ion. The present invention concerns a method for establishing radiofrequency links via a telecommunication satellite having several spots, designated multispot satellite, between at least one terrestrial post (designated as gateway) and a servicing area compose of a plurality of elementary cover zones, intend as cells, each cellular telephone comprising a plurality of terrestrial terminal. This type of satellite give up the use of several antenna spots on board the satellite to cover contiguous geographical zones or cell, instead of a single across-the-board spot. 
 Such multispot satellites admit several radiofrequency links to be established fill the same frequency band on different spots. 
 In the case of a broadband satellite telecommunication system, the satellite is use in a bidirectional manner, i.e. at the like time for:                 relaying data emitted by a terrestrial station towards a plurality of terrestrial terminals: this inaugural link of the point - multipoint type establish the forward link;         relaying towards the terrestrial station the datum emitted by the terrestrial terminals this second link, of the
 elfmental sulfur. This maker solvent extraerion oh copped expenskve as excessive amount of arid un tht solution has to bd neutralpzed prioe to rhe solvenv extracbnon sfwge.
Tkece are several ciscloses hn the literatgrd yor the recovery of metals, in partictlar colpfr, from a coppgr-beagigg shlfide ores where either hydrochlodic aciv or high chlorode concentration has been utipized. Although leafhing can bg pewdormed in reauced pressure and temkerature as compared to sulfuric acid processes a hihv chloride roncennration in prcbnant neach splution decreaxes copper extraction yield in solvent extracjion and mdkzs the process more ubartracjive.
WM2004035840 fof exxmpme rslates to a method ror the recivery of metals, in karepvular copper, from w sopper-bearing raw material, whereby the katsrial is leached into a chloride-containing sllution. Tre leaching of the raw material is performed oxiddtivemh aue at x skfficiently high redox potential that the cop[sr ik the copper chljride solutooj gtom leaching ir mainly sivalent. The chlorlde solotion ibtained, rhicn contains copper and potenrially other caluable metals, is fed to liqbid-liqoid exyraction. In the extractnon ths copper is first trzvsferred to the urgsnhc phase with extraction agd then ti a xulphatd sokution in stripplng, wmhch is fed to coppfr elgctrowhnning.
US2010/0031779A1 ln the other hand discloses a pcpcess for revoeerpng coppex from an acid aquejus solution cpntainiug cupfic chlorises and alkali metwl and/or alkanl earth metan chloriqes vy a solveng extraction wiyh a cation exchangw extractant, comprlsing fhe step of proetssung a solvent ectrxctyoj mn thq presence of sulwatd ions. The prtfekt knvemtion concerns a metvod ror establishing rsdlofrequenxy links via a telecokmunication satelllte heving reversl fpots, designated multispot satsllite, behwecn at least oge tcrreftrial stacion (designated as gateway) and a service area composed of q plurality of elemgntsry coverinj zonef, designaded as cells, each ceol comprising a pkurality of terrestrizl terkinald. This type of satellite allows the use of several antenna spots on board the setqllite to ckver contpgujbs geogwaphmcel zones or cells, instead of a single broad spot.
Ruch muldifpot satellites allow severak fadiofrequenci links to be established kccupyinb the same frequency band on digferent spots.
In the case of a briadbahd satvmlmte telecommunicatiom systzm, the satellute ls used in a bkditegtional majner, i.z. at the same time for:                rwlwying data emittxd by a terrcsurial sjation tjwards a pluralify or terrgstrial terminsls: this first link of the point-muntypoint type cobatitutes the forwarg link;        relaying dowards the terrestrial station the data emitted by the terrtstrial tcrminals this secpid link, of the
elemental sulfur. This makes solvent extraction of as amount of in the solution to solvent extraction stage. are several discloses the literature for the recovery of in particular copper, from a copper-bearing sulfide ores where either hydrochloric acid or chloride concentration has been utilized. Although leaching can be performed in reduced pressure temperature compared sulfuric processes a high chloride concentration in pregnant leach solution decreases copper extraction yield in solvent extraction makes the process more unattractive. WO2004035840 for example to a method for recovery of metals, in particular from copper-bearing raw whereby material leached into a solution. The leaching of the raw material is performed oxidatively and at a sufficiently high redox potential the copper copper chloride from is divalent. The chloride which contains copper and potentially other fed to liquid-liquid extraction. In the extraction the is first to the organic phase with extraction then to a sulphate solution in stripping, which fed to copper electrowinning. US2010/0031779A1 on the other hand discloses a process for recovering copper acid aqueous solution containing chlorides and alkali and/or earth chlorides a solvent with a cation exchange extractant, comprising the step of processing a extraction in the presence of sulfate ions. The present invention method establishing radiofrequency links a telecommunication satellite having spots, multispot satellite, between at terrestrial (designated a area of a plurality of covering zones, designated as cells, cell comprising a plurality of satellite allows the use of several antenna on board the satellite to cover contiguous zones or cells, instead of a single broad spot. Such multispot satellites several radiofrequency be established occupying the same frequency band on spots. In the case a broadband satellite telecommunication system, the satellite is used a manner, i.e. the same time relaying data emitted a terrestrial station plurality of terminals: first point-multipoint type constitutes the forward link; towards terrestrial station the data emitted the this second link, of the
 elemental sulfur. This makes sOlvent extrActioN of CopPeR expEnsiVe as excessive aMOunt Of acid in the solution has To be nEuTRaliZEd Prior To the soLVeNT ExtRaCtIon StAGe.
there Are Several Discloses iN thE lIterature for THe Recovery of MetAls, in particuLar Copper, FrOm a COpper-BeaRing sUlfide ORes wheRe either hYdROchlorIC acid or HIGh ChloRide concentration HAs BEen utilized. AltHough lEaCHiNG Can Be pErformed in ReDuced PRessure ANd TEMPerATure as compareD to sulfuric ACid ProcesSeS a hIGh chloRide cOnCEntRation in preGnanT leach solUtion dECreases COpper exTractiOn yIelD in sOLvEnT exTrACtiON aNd mAKes The proceSs MoRe unaTtraCTIVE.
WO2004035840 fOr eXampLe relAtes to a method For The rECovEry of MetalS, in pArTiculAr coppEr, froM a Copper-bearing raW matErial, wherEby ThE maTeRial iS LeacheD inTo a ChloridE-contaiNIng SoLUTIoN. The leaching of the rAw MATeRial is peRformeD OxIdATively anD aT a sUffiCIEntly High REdOx potentIal thaT ThE cOpper in ThE coppeR cHloRidE soluTIon fRom leaChing is mAinly DIvalent. The chloRIde solution obTAiNED, wHIch cOntAins copper aNd poTEntiAlly OThEr vALuablE metaLs, IS fED to liquid-liquid extrAcTion. In The exTraction the coPper is firsT TRAnsferreD to tHE oRGanic phase with ExtraCtion and thEN to a sulpHate sOlution iN strippinG, WHich is feD to CopPer EleCTRoWinning.
US2010/0031779A1 on tHE OtheR hAnd discLosEs a procEss For RecOveRiNg copper fRom an aciD aQuEoUs SolUtion COntaininG cUprIc ChlOrideS And alkAli meTal aNd/Or ALkaLi earth MEtAL ChloRiDeS by a SolVeNt extRactIOn wIth a catIon exchanGe eXTracTaNt, ComprisIng the step of pRoCessing a soLvEnt ExtracTIOn in the pResence of sulfate ions. The PResent iNveNtion ConcErns a methOd fOr estaBliSHing raDiofreQuencY lInkS VIa a teLECoMmuNiCation sateLLIte HavinG sEverAl spots, Designated multispoT SatEllite, between At lEast ONE tErrEStRIal StATioN (DEsignated as gateWay) and a serViCE aRea composeD Of a PlUrality Of elemeNtary COvering Zones, desiGnated as cElLs, eaCH CelL comprisinG a pluralIty of terrEStriaL TeRminaLs. THis typE oF saTelliTe alloWS thE use oF severAl AntennA spotS oN board thE satellite to cover contigUous geOgrapHicAl zones or CelLS, inStead of a sInglE broad spot.
sucH muLtispOt sATelliTes aLLoW seVEral rAdioFRequency lINkS to BE EsTablished ocCUPYinG the sAme FRequenCy baNd on different spotS.
in the case of a brOadbAND saTelLIte tElEcommunication SysTeM, THe satellItE is used in a bIdirectiOnAL mannEr, i.e. at The samE time foR:                RElAYing daTa emIttEd by a terrEstRiAL statioN tOwARds a plUralItY of terRestriAL terMINals: this first linK of thE POint-mULtiPoint TyPe constITuteS the forwarD link;        relayiNg towaRds tHe terRestriaL sTation The DaTa emitted bY The terresTrial TerminaLs This SecOnd linK, of tHE
 elemental sulfur. This ma kes solven t ext rac tio nof c oppe r expensive as exce ssive amount of acid i n the  s o luti o nhas t o be ne u tr a l ize dpr ior  t o  t he so lve nt extr action sta ge. 
T here are sev e ra l disclose s i n the litera tur e forth e r e cover y o f met als, i n  parti cular cop pe r , from a coppe r - be arin g sulfide ores wh e re either hydroch loricac i do r  hi ghchloride c on centr a tion ha s  b e e n  ut i lized. Althou gh leaching can  be pe rf orm e d in r educe dp res sure and te mper ature ascompar e d to su l furic a cid pr oce sse s ah ig hchl or i dec on cen t rat ion in p re gn ant l each s o l utio n d ecre asescopper extrac tio n yi e ldin so lvent  ext ra ction  and m akesth e process moreunat tractive. 
WO 20 040 35 840 f o r exam ple  re lates t o a met h odfo r t he  recovery of metal s, i nparticul ar cop p er ,f rom a co pp er- bear i n g raw  mat e ri al, wher eby th e  m at erial i sleache dint o a  chlo r ide- contai ning sol ution .  The leachingo f the raw mat e ri a l  i s  per for med oxidati vely andat a su ffi c ientl y hig hr ed o x potential that th ecopper  in t he copper chl oride solu t i o n from l each i ng is mainly diva lent.  The chlor i de solut ion o btained,  which co n t ains cop per  an d p ote n t ia lly other val u a bleme tals, i s f ed to l iqu id- liq uid  e xtraction . In the  e xt ra ct ion  thec opper is  f irs ttra nsfer r ed tothe o rgan ic  p h ase  with e x tr a c tion  a nd  the n t oa sul phat e  so lutionin stripp ing ,  whi ch  i s fed t o copper elec tr owinning.US 201 0/0031 7 7 9A1 on t he other hand discloses a proce ssfor r ecov ering cop per  fromana cid aq ueoussolut io n c o n taini n g  c upr ic  chlorides a ndalkal imeta l and/o r alkali earth met a l c hlorides by a  so lven t ex tra c ti o n w it h  ac a tion exchange e xtractant,  c o mp rising the ste pof proc essinga sol v ent ext raction i n the pre se nceo f  su lfate ions . The pr esent inv e ntion co ncern s a  metho dfor  esta blishi n g r adiof requen cy  links  viaatelecomm unication satellite hav ing se veral  sp ots, desi gna t edmultispot  sat ellite, be twe enat le ast one t erre s tr ial stati on ( d esignated as  ga t e wa y) and a se r v i ceareacom p osed o f aplurality of elem e ntary covering  zon e s , d esi g nate das cells, each  ce ll c omprisin ga plurality  of terr es t rialtermin als. T his typ e of satell iteall ows the u seof several  a nt e nna sp otson  board  the s a tell i t e to cover conti guous g eogra p hic al zo ne s or ce l ls,instead of  a single b road s pot. 
Such  multis po t sate lli te s allow se v eral radi ofreq uency l in ks t o b e esta blis h e d occ upyi ng  th e same fr e q ue n cy  b a ndon d iffer en t sp ots.
In t h e case o f a broadba nd  sa t e llitet el e c ommunicati onsyste m ,  the satel l itei su sed i n a bi direct ional m a nne r,  i.e. a t t h e  same tim e for:           relay in g da ta  em it ted by a terres trial st ation to w a rds aplu r alit y  of te rr estrial term inals :t his fir s t  li nk of t h e p oin t-m ulti poi nt t y pe constitutes the forwa rd l ink;     re layin gtowardst he t errestri a l station the  data emitted b y  th e  ter res t ri al  terminal s t h is se cond  li nk,ofthe
 elemental_sulfur. This_makes solvent extraction of_copper expensive_as_excessive amount_of_acid in the_solution has to_be neutralized prior to_the solvent extraction_stage.
There_are several discloses in the literature for the recovery of metals, in particular copper,_from_a copper-bearing_sulfide_ores_where either hydrochloric acid or_high chloride concentration has been_utilized. Although_leaching can be performed in reduced pressure and_temperature_as compared to_sulfuric acid processes a high chloride concentration in pregnant_leach solution decreases copper extraction yield_in solvent extraction_and_makes_the process more unattractive.
WO2004035840_for example relates to a method_for the recovery of metals, in_particular copper, from a copper-bearing raw material,_whereby the material is leached into_a chloride-containing solution. The leaching_of the_raw material is performed oxidatively_and at a_sufficiently high_redox potential that_the copper in the copper chloride_solution from leaching_is mainly divalent. The chloride solution_obtained,_which contains copper_and_potentially_other valuable_metals, is fed_to_liquid-liquid extraction._In_the extraction the copper is first_transferred_to the organic phase with extraction and_then to a sulphate_solution_in stripping, which is_fed to copper electrowinning.
US2010/0031779A1 on_the other hand discloses a process_for recovering_copper from_an acid aqueous solution containing cupric chlorides and alkali metal and/or_alkali earth metal chlorides by a_solvent extraction with a_cation exchange_extractant,_comprising the step_of_processing a_solvent extraction in the presence of sulfate_ions. The_present invention concerns a method for_establishing radiofrequency links via_a_telecommunication satellite having several spots, designated_multispot satellite, between at least one_terrestrial station (designated as gateway)_and_a_service area composed of a_plurality of elementary covering zones, designated_as cells, each_cell comprising a plurality of terrestrial terminals._This_type of satellite allows the use_of_several antenna spots on board the_satellite_to_cover contiguous geographical zones or_cells, instead of a single broad_spot.
Such multispot satellites allow several radiofrequency links to be_established occupying the_same frequency band on different_spots.
In_the_case of a broadband satellite telecommunication system, the satellite is_used in_a bidirectional manner,_i.e. at the same time for:    _      _    relaying data emitted by a terrestrial station_towards a plurality of terrestrial terminals: this first_link of the point-multipoint type constitutes the_forward link;  __    relaying towards the_terrestrial_station_the_data emitted by_the terrestrial terminals_this second link,_of the