The substance Cement copper is a UVCB (origin: inorganic)
Public name: High Grade Cement Copper
|EC name:||Cement copper|
|CAS number (EC inventory):||67711-88-0|
|IUPAC name:||Insoluble copper-containing residue after precipitation of copper bearing solutions|
During the zinc refining process, cement copper is obtained when adding
- a reducing agent i.e. Zinc powder, Fe-powder, Al-powder, H2, ...- to the Copper loaded Zinc Sulphate solution and precipitation (cementation) of a Copper-rich precipitate.
- a neutralizing agent (e.g. Zinc oxide, Na(OH), ...).to the Copper loaded Zinc Sulphate solution and precipitation (hydrolysis) of a Copper-rich precipitate.
- Cu+ containing solution to a Cl- containing Zinc Sulphate solution, or a reducing agent if the Zinc Sulphate solution is Cu++ rich, and precipitation of a CuCl rich precipitateAfter settling step, the precipitate is optionally re-pulped in a second reaction tank with a slightly acidic sulphate solution i.o.t. dissolve the excess of unreacted zinc powder and potentially co-precipitated Cadmium. The Copper-rich precipitate can be washed and filtered out of the suspension using press-filters
|Molecular weight range:||n.a.|
Cement copper has 2 composition ranges. It will thus also have 2 classifications. Please download composition information from document at the bottom of the page.
Please download classification information from document at the bottom of the page.
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