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Source publication
Refractory sulphide gold ores cannot be effectively processed via hydrometallurgy without a pre-treatment stage as gold is disseminated in a fine form, as submicron size inclusions, in the lattice of the sulphide minerals. Pre-treatment techniques, comprising oxidation roasting, chlorination and aqueous pressure oxidation, which are widely applied...
Contexts in source publication
Context 1
... oxidizing roasting experiments were performed in a laboratory scale microwave system shown in Figure 1. The oven set up was manufactured and provided by the "Fricke und Mallah Microwave Technology GmbH" and it mainly consists of: a control panel, a power supply, a water-cooled magnetron, a rectangular waveguide and a multimode cavity where the sample is placed into an alumina crucible ( Figure 1). ...
Context 2
... oxidizing roasting experiments were performed in a laboratory scale microwave system shown in Figure 1. The oven set up was manufactured and provided by the "Fricke und Mallah Microwave Technology GmbH" and it mainly consists of: a control panel, a power supply, a water-cooled magnetron, a rectangular waveguide and a multimode cavity where the sample is placed into an alumina crucible ( Figure 1). The magnetron operated at 2.45 GHz, while the incident power can be adjusted from 0-2000 W. A number of tuners, appropriately positioned on the waveguide, prevent the reflection of radiation back to the magnetron while an optimum match between the load volume and the input power is achieved. ...
