Slimes-dam construction in the gold mines of the Anglo …
The selection of suitable ground for the deposition of slimes, the initial design and construction of a slimes dam, and its consequent operation are presented in logical sequence.
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A history of South African slimes dams …
South Africa to put a filter drain into a slimes dam. This was at St Helena Gold Mine in the . ... John was a protégé of Fritz in his earlier yea rs and became proficient in slimes dam design and .
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Retreatment of Gold Residues
Gold-mining residues typically fall into one of three categories: slime (particle size of about 75% passing 74 μm), sand (about 10–20% passing 74 μm), and waste rock.Since the slime and sand have been previously processed, it typically has a low gold grade (<1.0 g/t) and will provide relatively low recovery efficiencies, in the order of 50%.
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Slimes disposalatSouthAfrican goldmines
of South African gold-mine slimes dams. Donaldson's results indicate that the shear strength of slimes, after they have been consolidated by drying, is generally sufficient to ensure that these …
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The nature and extent of uranium contamination from …
Gold mining areas and slimes dams affected streams in the Witwatersrand basin Apart from the enormous size of the covered area it is often the specific location of slimes dams in relation to adjacent land use or natural conditions that worsens the …
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A practical guide to re-treatment of gold processing residues
The overall dam composite sample is assayed for gold, sulphur and other elements of interest. Where a slime deposit interfaces with a sand deposit, the incremental samples, which contain both sand and slime, can be screened and the gold grade of both the sand and slime fractions determined.
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Slimes-dam construction in the gold mines of the Anglo …
The selection of suitable ground for the deposition of slimes, the initial design and construction of a slimes dam, and its consequent operation are presented in logical sequence. Emphasis is …
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OneMine | Slimes-dam construction in the gold mines of the …
The selection of suitable ground for the deposition of slimes, the initial design and construction of a slimes dam, and its consequent operation are presented in logical sequence. Emphasis is …
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A History of South African Slimes Dams Engineers
6 JOHN WATES John was a protégé of Fritz in his earlier years and became proficient in slimes dam design and management in the goldfields of South Africa.
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Yesterday's Tailings are Tomorrow's Resource – …
Three slimes dams existed, the Nos 2, 4, and 5 Dams illustrated in Figure 1. ... Stilfontein Gold Mine, located approximately 160 km west of Johannesburg, produced both gold ... The design mining rate was 570 000 dry tons per month. This could be achieved with two 150 mm hydraulic guns with a further two guns on standby. The dump would be mined ...
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Mudrush Dynamics In Underground Mining | SRK Consulting
Cases exist of injuries and fatalities from sudden ore pass discharges, the collapse and subsequent flow of unconsolidated or poorly consolidated backfill, and the failure of tailings and slimes dams. In September 1970, 89 miners were killed at the Mufulira mine in Zambia due to an inrush of 450,000 m3 of muck into the workings.
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About Tailings Storage Facilities
The Ballarat Gold Mine tailings storage facilities meet the definition of a 'dam' as described under the Water Act 1989. Ballarat Gold Mine is required to follow the Earth Resources Regulation (ERR) Guideline for the Design and Management …
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Prospecting Right and Environmental Authorisation …
Ergo has developed an efficient, modern process to extract gold from these historic slimes dams. To determine the economic viability to mine the slimes dams, prospecting activities are …
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The environmental impact of seepage from gold mine …
The environmental impact of seepage from gold mine tailings dams near Johannesburg, South Africa Submitted inpartialfulfilment oftherequirements forthedegree Facultyof NaturalandAgricultural Sciences University ofPretoria ... Although many tailings dams have been partially or completely reclaimed, their
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End game
Ergo Gold Mining Company owns the rights to treat about 100 sand dumps and slimes dams around Johannesburg – approximately one-fifth of the total estimated by Mintek in 2016. Most of the material fed to Ergo, the flagship treatment plant, comes from two pipelines: one from the Elsburg tailings dump and the other from the 5L/29 dump.
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Slimes-dam construction in the gold mines of the Anglo …
The average slimes dam compacts at 0,625 m3 per tonne and contains 10 per cent moisture. At 0,625 m3 per tonne, the slime would become saturated at 20 per cent moisture. For example, a slimes dam 15 m high constructed on 85 ha of ground would contain nearly 18 million tonne of solids at 10 per cent moisture, and a slimes dam 35 m high con-
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Ecological aspectsofslimes-damconstruction
mining, 72km2ofslimes dams and sand dumps have been created. Thepresent practice, which takes ecological aspects into consider-ation, isto secure the slimes dams and soprevent orreduce run-off of rain by providing water-holding areasforevaporation, onandaround the dams, and toprevent orreduce dusty conditions by vegetating the slimes surfaces ...
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Shear stability of dumps and dams of gold mining waste
The mechanics of foundation failures in rock dumps are descriptionbed and hence a design for the shear stability of rock dumps is developed. Recent improvements in the analysis of consolidation and slope stability are applied to produce design graphs for the slopes of slimes dams.
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Gold tailings reclamation in South Africa
It describes the basic philosophy, techniques, methods and treatments followed by the Vegetation Units of the Chamber of Mines and that of Rand Mine Properties which establish vegetation on …
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The West Driefontein reclamation carbon-in-pulp plant; …
formation of the West Driefontein Gold Mining Company. The reclamation gold plant at West Driefontein was originally built as a uranium recovery plant in 1970. With the collapse of the uranium oxide yellow cake market, the uranium plant was closed in 1988 and successfully converted into a gold plant, recovering gold from repulped tailings dams1.
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Theoretical and engineering aspects of slimes-dam …
The art of slimes-dam construction grew with the gold-mining industry in South Africa as a result of ex-perience with successful dams and with failures. (The failures are more important when it comes to learning about the properties of materials and the mechanisms by which fail-ures occur.) Slimes-dam construction developed in this way for ...
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Slime dams and IN THE COMMUNITY toxic cocktails
Slime dams and toxic cocktails Most communities in the Witwatersrand Mining Basin, which includes the Far East Basin, Central Rand Basin, Western Basin, Far Western Basin, Klerksdorp-Orkney-Stilfontein-Hartebeestfontein and the Free State gold mines, live next to slime dams that pose a serious health hazard.
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Investigation into the slimes dams
The following practices or technologies could make mine dumps and slimes dams practical in habitable environments: Rock cladding of tailings dams, this has been used to control wind and water (rainfall) erosion of the Doornkop tailings dam in the Westrand, Randfontein Estates gold mine [8]. Rock cladding can also be
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A Manual on Mine Water Treatment and Management …
APPENDIX VOLUME 3 • GOLD MINE SITE VISIT REPORTS. MANUAL ON MINE WATER TREATMENT AND MANAGEMENT PRACTICES ^ __, .., _J^°9e "i CONTENTS ... 3.4.3 Checklist for slimes dam and evapuration dams 4.15 3.4.4 Metallurgical plant and residue pH control 4.16 3.4.5 PLC Systems for underground water management 4.16
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Tailing Disposal Methods and Tailings Dam Construction Design
Tailings Dam Construction Design. of slime is likely to slide and cause the dam to break away. The procedure usually adopted in such cases is to separate the tailing into coarse sand and fines in a classifier, and to use the coarse product to build up the wall ; the remainder of the pulp is discharged into the interior of the dam.
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Water balance of a slimes dam in the Klerksdorp region …
Since U is a by-product of gold mining, it has been estimated that more than 510,000 t of U has been deposited on mine dumps and tailing dams as gold tailings [20]. Seepage from these tailings ...
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The Environmental Effects of Effluent Disposal at Gold …
Engineering manager Information regarding the technical design of slimes dams, heap leach pads, and tailings dams impoundments ... The gold mining activities, especially rudimentary mines as well as stump mills, use mercury to dissolve and attract gold from the ore. The wet slurry effluent is a cause of concern considering the presence of mercury,
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Theoretical and engineering aspects of slimes-dam …
The art of slimes-dam construction grew with the gold-mining industry in South Africa as a result of ex-perience with successful dams and with failures. (The failures are more important when it …
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Theoretical andengineering aspectsof slimes …
gold-mining industry, there are slimes dams where the seepage effluent contains harmful pollutants, such as the gypsum dams for the fertilizer industry. Inthese casesitis essential …
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Ecological aspects of slimes-dam construction
Slimes, the water-borne tailings from gold-treatment plants, are usually of very small particle size, i.e., a high percentage (usually over ... sary guide lines for the design of stable dams. During the investi-gation, the Steering Committee ... mining, 72 km2 of slimes dams and sand dumps have been created. The present practice, which takes ...
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