lix sulfuros parte 2
TRANSCRIPT
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Pressure Leach Approach Roast – Leach Approach
Concentrate
Pressure Leach
Iron
Concentrate
Roast
Leach
Acid Plant
Sulphuric Acid
SO2Dross
Dross
Return
electrolyte
Leach residue
+ Sulphur
Purify
Electrowin
Castin
!inc dust
Sla" #inc
Li$estone%arosite residue
Dross to roastin
or leachin
Return electrolyte
to leachin
Electrolyte
Iron
Re$o&al residue
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' Concentrate feed Pressure leach Roast leach
Che$ical analysis () "y weiht* dry "asis
!n ,-./ ,-./
0e '1. '1.S ,.- ,.-
Cu '.- '.-
3 /./', /./',
Cl /.//4 /.//4
Cd /.'- /.'-
5oisture () "y weiht* dry "asis 1./ 1./
Particle si#e ) 6,, 7 1./ 1./
2 O&erall reco&eries ()
!n 8-./ 8-./
Cu 1/./ 4-./
Cd 8/./ 8/./
Operatin ti$e (days9year
, Leachin
Operatin pressure (:pa ;// ('// psi /
Retention ti$e ($in '2/ 2'/ plus 2'//
in C '-/ 8/
O?yen utili#ation () 8/
32SO,9!n $olar ratio '.'
- Electrowinnin
Current density (A9$2 1-/ 1-/
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0irst stae or
neutral leach
Li@uid6solid
separation
Li@uid6solid
separation
Second stae
or acid leach
0inal residue
(8; – 88) !n e?traction
Return electrolyte
(-/ 9l !n* '-/ 9l 32SO,
Partly reacted
solutionPartly reacted
solids
('- 9l !n* './ 9l 32
SO,
* /.- 9l 0e
0inal solutionConcentrate
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In this '8.,//6al autocla&e* sulphuric acid at 2-/C and 1// psi leaches latente
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=his ,1/ al autocla&e operates at 22/C and ,-/ psi
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A '1.1// al autocla&e for precipitation of sulphides whith hydroen
sulphide
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=his ,./// al autocla&e operates at 22- psi for o?idation leachin of Bi6Co
$attes
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Rotary autocla&e for leachin tunsten and $oly"denu$ concentrates
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=u"e autocla&e asse$"ly (elfeldt '814
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Diara$ of colu$n autocla&e syste$