84
J. F. Pusateri et al.
The AZR process generates CZO and IRM products that are very comparable
in quality to their Waelz kiln counterparts. The process meets the strict air-quality
emission standards and generates zero contact water discharge [4].
Mooresboro Process Overview
The Mooresboro flow sheet is premised on the state of the art Modified Zincex
Process® (MZP), developed by Tecnicas Reunidas, and first implemented in 1997 in
a 3000 tons per year spent battery recycling facility near Barcelona [5]. In 2003, the
MZP was proven at large industrial scale in the 165,000 tons per year Special High
Grade (SHG) Zn Skorpion Zn Refinery (Namibia) and subsequently at Portovesme
(Sardinia) and Akita (Japan).
The MZP incorporates atmospheric leaching, impurity precipitation through pH
control and solvent extraction (SX), using a 40v/v mixture of Di-2-ethyl-hexylphosphoric acid (D 2 EHPA) extractant, and a kerosene-based diluent [6]. Figure 7
conceptually illustrates the MZP application in the Mooresboro flow sheet, which
comprises the following four main process loops:
• Leach—SX extraction.
• SX extraction—SX washing—SX stripping—SX depletion.
• SX stripping—electrowinning (EW).
Fig. 7 MZP concept as implemented at Mooresboro (main process flows shown)
J. F. Pusateri et al.
The AZR process generates CZO and IRM products that are very comparable
in quality to their Waelz kiln counterparts. The process meets the strict air-quality
emission standards and generates zero contact water discharge [4].
Mooresboro Process Overview
The Mooresboro flow sheet is premised on the state of the art Modified Zincex
Process® (MZP), developed by Tecnicas Reunidas, and first implemented in 1997 in
a 3000 tons per year spent battery recycling facility near Barcelona [5]. In 2003, the
MZP was proven at large industrial scale in the 165,000 tons per year Special High
Grade (SHG) Zn Skorpion Zn Refinery (Namibia) and subsequently at Portovesme
(Sardinia) and Akita (Japan).
The MZP incorporates atmospheric leaching, impurity precipitation through pH
control and solvent extraction (SX), using a 40v/v mixture of Di-2-ethyl-hexylphosphoric acid (D 2 EHPA) extractant, and a kerosene-based diluent [6]. Figure 7
conceptually illustrates the MZP application in the Mooresboro flow sheet, which
comprises the following four main process loops:
• Leach—SX extraction.
• SX extraction—SX washing—SX stripping—SX depletion.
• SX stripping—electrowinning (EW).
Fig. 7 MZP concept as implemented at Mooresboro (main process flows shown)