C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 7/07 (2006.01) C01B 7/03 (2006.01) C01B 13/34 (2006.01) C01G 23/053 (2006.01) C01G 49/04 (2006.01) C22B 1/02 (2006.01) C22B 3/02 (2006.01) C22B 3/10 (2006.01)
Patent
CA 2101078
The specification discloses a process for regenerating aqueous chloride leach liquors. The process involves roasting aque- ous chloride leach liquor to produce metal oxide and a gas containing HCl. The gas containing HCl is passed through a precon- centrator where it is contacted with spent aqueous chloride leach liquor. The enthalpy of the gas evaporates water from the spent liquor thereby concentrating it. At the same time the spent liquor absorbs HCl. HCl not absorbed in the preconcentrator is con- tacted with water to form hydrochloric acid. The hydrochloric acid may be mixed with the concentrated spent liquor and re-used. Apparatus for operating the process is also disclosed.
Hollitt Michael John
Mcclelland Ross Alexander
Cassan Maclean
Technological Resources Pty Limited
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