The EZINEX ® Process for Secondary Zinc Bearing Materials
795
Zn
Leaching
Zn powder
Cementation
E.W.
Carbonation
Evaporation
C.Z.O.
NH3
Cement
Residue
MeCO3
Na2CO3
NaCl/KCl
Plating
INDUTEC
Pelletising
N2
g
ate a s
Sla
Pig iron
EAFD
Other zinc
bearing
m ri l
Neutralization
Zinc
CaO C
Metal
ZnO
Na2CO3
Galvanising
ash
Pickling liquors
Grinding
Shredding &
Alkaline &
Zn/C batteries
Plastic/papers
Zn salts
Electrolyte
Paste
Fe & Zn
Fig. 6 Integrated INDUTEC ® /EZINEX ® Process—conceptual block diagram
it allows examination of virtually all potential zinc bearing raw materials in one
system. Additional investigation needs to be made to prove the viability of this
concept.
Conclusion
The EZINEX
® Process to directly produce zinc metal from secondary zinc bearing
materials is a very attractive and versatile alternative to ISP and classic sulphuric
EW. The overall system is simplified, and the main drawbacks of these traditional
technologies are solved within the EZINEX
® system.
Combing EZINEX
® with a thermal zinc fuming process makes it particularly
suitable to accept a wide variety of materials that are currently either landfilled or
only partially recovered, even though they contain significant metal values. This
system directly produces a commodity product rather than an intermediate, such as
CZO. This avoids any technical and economic concerns with transitional product
marketing. In fact, some CZO producers are currently attempting to improve the
quality of their product by pre-washing the material, but these systems are facing
some technical and economic issues as well.
795
Zn
Leaching
Zn powder
Cementation
E.W.
Carbonation
Evaporation
C.Z.O.
NH3
Cement
Residue
MeCO3
Na2CO3
NaCl/KCl
Plating
INDUTEC
Pelletising
N2
g
ate a s
Sla
Pig iron
EAFD
Other zinc
bearing
m ri l
Neutralization
Zinc
CaO C
Metal
ZnO
Na2CO3
Galvanising
ash
Pickling liquors
Grinding
Shredding &
Alkaline &
Zn/C batteries
Plastic/papers
Zn salts
Electrolyte
Paste
Fe & Zn
Fig. 6 Integrated INDUTEC ® /EZINEX ® Process—conceptual block diagram
it allows examination of virtually all potential zinc bearing raw materials in one
system. Additional investigation needs to be made to prove the viability of this
concept.
Conclusion
The EZINEX
® Process to directly produce zinc metal from secondary zinc bearing
materials is a very attractive and versatile alternative to ISP and classic sulphuric
EW. The overall system is simplified, and the main drawbacks of these traditional
technologies are solved within the EZINEX
® system.
Combing EZINEX
® with a thermal zinc fuming process makes it particularly
suitable to accept a wide variety of materials that are currently either landfilled or
only partially recovered, even though they contain significant metal values. This
system directly produces a commodity product rather than an intermediate, such as
CZO. This avoids any technical and economic concerns with transitional product
marketing. In fact, some CZO producers are currently attempting to improve the
quality of their product by pre-washing the material, but these systems are facing
some technical and economic issues as well.