• Earth Sciences
• Engineering
• Geochemistry
• Geology
• Mineral Processing/Beneficiation
• Mineral Resource Geology
• Mineral Resources (Excl. Energy Resources)
• Mineralogy And Crystallography
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Notes: Includes reports on:  - Assessment of seven clays for possible pottery use.  - Comments on the use of a top blown rotary converter in South Australia. Report examines the current feasibility of using the Dravo Corporation's Kaldo - type top...

Notes: Includes reports on:  - Assessment of seven clays for possible pottery use.  - Comments on the use of a top blown rotary converter in South Australia. Report examines the current feasibility of using the Dravo Corporation's Kaldo - type top blown rotary converter for primary smelting of South Australian copper sulphide concentrates, as a mid-sized greenfield operation (handling possibly up to 170,000 tonnes per year of concentrates). Current indications are technically and economically unfavourable. Amdel project no. OD 1/1/227.  - Pure calcium carbonate from waste. Reports give the results of experimental dissolution and reprecipitation tests aimed at optimising the conditions for achieving purification of crude waste calcium carbonate (caustic mud) by using ammonium chloride, and the findings of a preliminary costing study for the final process. It was shown that a fine grained calcium carbonate product containing at least 98% CaCO3, and having a brightness exceeding 96%, could be formed in a suitably controlled process. This product should be suitable for many applications in the paper, paint and plastics industries. However, due to the low present level of demand in Australia for high purity calcium carbonate, and the high capital investment and labour cost components for a small scale of production using the studied production process, it does not seem that the project is economically attractive to pursue. Amdel project no. OD 3/0/0.  - Results of a preliminary separation study on a sample of barite from Mount Frome. Problems of bottle-necking in the silica separation circuit of an industrial mineral processing plant located at Beverley in Adelaide were investigated by a site inspection and by laboratory separation tests carried out on a ground-down sample of Mount Frome barite ore. It appears that a combination of low feed rate and finer size reduction, before performing air separation, would improve the grade of barite recovered.  - Testing of five samples of foundry sand from Angle Vale. Progress reports and final report.  - Warrakimbo micaceous iron oxide. Progress report no. 2. Two size fractions of a sample of Warrakimbo mine ore, ground down respectively to minus 75 and minus 212 microns, were tested for separation of the ore constituents (haematite, pyrite, goethite, chalcopyrite, plus gangue) by magnetic separation and flotation. Results of testing showed that normal sulphide flotation methods gave better separation of copper and sulphur from the haematite for the coarser fraction. Wet magnetic separation was effective in separating a high grade haematite (88-94% Fe2O3) from non-magnetic gangue and other iron oxides. Thus it appears feasible to produce an upgraded Warrakimbo ore that will meet commercial specifications for micaceous iron oxide.
Doc No: Env 03081

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