The purpose of this 2005 convention was once to supply a discussion board for extractive metallurgy operators to debate and current reviews in facing genuine processing concerns and their options. the 3 major goals of the convention have been to switch sensible details to help operators in enhancing their plant’s everyday functionality; to introduce new processing thoughts and stimulate debate approximately the best way to increase the quite often; and to study prior functionality at the implementation of tasks from an operator’s viewpoint with the purpose of making a choice on what was once performed good and what has to be performed higher sooner or later. All papers have been peer reviewed sooner than e-book in response to the AusIMM instructions to make sure the presentation and technical content material is maintained at a excessive common. This convention quantity will function a useful resource of data for these looking to comprehend and to extra enhance plant functionality.
desk of Contents
Section 1. Keynote Addresses 1. schooling and improvement of craftsmanship for the assets
2. discussion with the darkish aspect - Geologists and Miners are humans Too
Section 2. Leaching and Solvent Extraction three. Pilot reviews of the Ravensthorpe Nickel Project's strain Acid Leach Slurry Heater
four. layout and Commissioning of the Sepon Copper strain Oxidation Circuit
five. HydroCopper® - a brand new technique for Treating Copper Concentrates
6. Implementation of a brand new Leaching strategy for the remedy of KCGM Gold Flotation focus
7. research of Agitation Leaching facts - equipment and Interpretation
eight. Uranium restoration from hugely Saline in situ Leach options via Ion alternate
nine. using AuRIX®100 Resin for the Selective restoration of Gold and Silver from Copper, Gold and Silver recommendations
10. enhancing Plant Operations utilizing Synergistic Solvent Extraction know-how and natural tracking
eleven. lowering working charges and Soluble Loss in Copper Hydrometallurgy with Use of leading edge Solvent Extraction Circuits
12. worthwhile steel restoration through Electrolysis to Yield a Filterable Sludge
Section three. Smelting and changing thirteen. The Clyde-WorleyParsons concept for a Flash Furnace Feed procedure
14. Sampling and Measurements within the response Shaft at Olympic Dam
15. bettering Blister Tapping at Olympic Dam
sixteen. the recent Anglo Platinum changing undertaking
17. Modelling of Slag Blow in Copper Peirce-Smith Converters
18. Thermodynamics of changing High-Impurity Copper Matte
19. Peirce-Smith Converter Mouth redecorate evaluate
Section four. procedure development 20. layout issues for Smelter fuel dealing with
21. development in Australian Bulk Minerals' Iron Ore Pellet caliber and technique functionality
22. Prevention of Scaling and Corrosion of Titanium Alloy warmth Exchanger Tubes on the Risdon Electrolytic Zinc Refinery
23. Pipeline layout features of a few business Paste-Like Slurries
Section five. Plant help 24. Commissioning - The Interface among development and Operations
25. Alkali Emission aid and dimension at Queensland Alumina restricted (QAL)
26. keep an eye on procedure development via Alarm aid
27. technique info administration approach at Mount Isa
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Extra info for First Extractive Metallurgy Operators' Conference Proceedings 2005
0 g/t in the second leach tank. The cyanide control level was gradually reduced from 2500 - 2700 ppm NaCN to 2000 - 2200 ppm NaCN in 15 days. 7 kg/t (Figure 3). However, in spite of these modifications, gold leaching rates obtained in the laboratory were always faster that at the plant scale. While a steady state was obtained in 12 - 24 hours in the laboratory, the plant circuit could not reach it before 60 - 72 hours. The variation in the performance of the cyclones was identified as an additional factor on limiting gold extraction.
There is thus a relatively easy method of modelling the GAC with this linear time related consumption. The consumption consists of two parts. The first is the GACo or that associated with the early leach where gangue is the main consumer of acid. The second is the linear time related increase in GAC and is the rate part of the equation. The GACo appears to vary with a number of parameters. Figure 5 shows variation with grind size and Figure 6 with grade. • The leach rate for the slow regime is particle diffusion • The fast leach rate in the commercial plant will depend on the agitation intensity and the availability of acid to the surface of the ore particles.
The analyser had 11 sampling points, all of which were fully automated. The solid containing samples were filtered automatically and the solutions were analysed for Cu, Fe, Zn and Pb. Brisbane, QLD, 7 - 8 November 2005 33 L HAAVANLAMMI, O HYVÄRINEN and E YLLÖ ® PROCESS INPUTS Many chemicals are used in the HydroCopper® process. Calcium is the only component that has to be purchased outside; all the others can be made within the process itself. The actual input requirements depend on the concentrate composition and are confirmed after tests have been carried out.