face scrapers and gully scrapers gold mine

Monitoring ore loss and dilution for mine-to-mill …

A case study was undertaken at a gold mine in the Free State on the influence of the fragment size distribution on 'free gold', the effect of ore loss and dilution on the mill efficiency, and time ...

The optimization of mining method and equipment

•Scraper winches to replace gravity and shovels to move rock, both in the face and the gullies, were first ... • In the gold mines most individual faces are about 30 metres in length. Drilling the face in a shift is not the ... • Strike gully length is again dictated by the capability of the scraper winch. However, in this instance ...

Strike gully pull length (SPL) is increased to 90 m. Cleaning

By increasing the strike gully pull length (SPL), the cleaning throughput is reduced from 12 m /h to 6 m /h, thus the SPL becomes the cleaning constraint for two of three face …

Hingeback Scrapers

We supply the full range of scoops for both face and gully cleaning. This includes hingeback, hoe and other scraper designs. Galison scraper scoops are designed to give …

Equipment alternatives for stoping in gold mines

For adequate protection against rockfalls, a support resistance of up to 50 kN/m2 would be aimed for. Face cleaning would be carried out using hand-held water jets to move the …

Safety challenge in use of double drum scraper …

For normal mining operations, the return wheel for the return rope is moved daily as the face advances. The scraper winch installation in a conventional stope is installed to pull the broken rock/blasted rock …

Winning paper: Analysis of strike gully stability at …

The following has been suggested to the mine to help reduce strike gully instability. Where possible, maintain lead-lags below 7 m—else increase the siding depth to suit. Decrease the gully width standard to 1.2 m (especially in 'high risk areas'). Discourage drillers from drilling side holes in gully face blast pattern.

Equipment alternatives for stoping in gold mines

Equipment alternatives for stoping in gold mines* by A.G. DU PLESSISt, D.G. WYMERt, and N.C. JOUGHINt ... from the face, allowing a scraper to be run along the face. Once the face has been cleaned, and prior to the drilling ... Packs for gully support Fig. 2-Water-jet assisted face scraping 388 DECEMBER 1989 at the prop. Suitable compact ...

Investigation into the causes of accidents on scraper …

that scrapers are an integral part of the narrow reef mining methods employed on gold and platinum mines, working in the face as well as in strike and dip gullies. Scraper systems are accountable for a significant number of accidents underground. This report investigates and highlights the causes of accidents on scraper winch

Stope gully support and sidings geometry at all depths …

support at all depths in both gold and platinum mines, to reduce hazards and promote safe gully conditions. The project has been carried out under four broad study areas.

OneMine | Improving the transportation of men, material …

Keywords: Transportation, rock handling, material handling, men transportation, face cleaning, gully cleaning, continuous scraper, monorail, mechanized raise climber, mechanization. The transportation of men, material and rock in mechanization programmes is often neglected, or at least plays only a secondary function, as the …

UNDERGROUND TRANSPORT IN GOLD MINES

Strike gully scraping was similarly investigated to ensure that it matched the rate of discharge of the face scrapers and to determine the maximum length of strike gully travel possible with the ...

The improved rate of stope-face advance at the …

west mining was done to mid-way between raises, but, owing to faulting, it was usually necessary to mine east for the full distance between raises (e) ventilation: one vynide strike curtain (installed by stoper) per panel, 3 m above the gully (f) winches: 22,5 kW gully and face winches (g) scraper scoops: 2-ton hinge-back scoops for face and gully

Stope-face conveyors for gold mines

The rock on the conveyor is removed from the stope face by the con-veyor and is discharged into a scraper gully. The rock lying in front of the conveyor is loaded onto …

OPTIMISATION OF THE SHAFT CALL FACTOR THROUGH …

v ACKNOWLEDGEMENT This research report has been made possible by the assistance of the following persons: My supervisor Mr. Sihesenkosi Nhleko for his patience, coaching and

Mining of Alluvial Gold Ore Deposits – GeologyHere

1.Overview of Alluvial Gold Deposit Mining. Here I mainly introduce the method of opencast mining. Open-pit mining of alluvial gold is divided into three categories according to the different mining machinery used: (1) Gold Dredger mining: it is a combination mining, walking and washing and selecting facilities in one, floating on …

-1: Percentage hazard for platinum and gold | Download …

Some attempts have been made in gully rock handling with the introduction of a continuous scraper and trials of automated scrapers. Despite intensive efforts in face cleaning operations, the only ...

Basic principles for stable gullies in the gold and …

Sabinet African Journalshttps://journals.co.za/doi/pdf/10.10520/AJA0038223X_625[PDF]

The improved rate of stope-face advance at the …

WEBThe objective was to limit the strike scrape and thereby ensure that the strike cleaning capacity is main- tained or increased over strike distances of up to 300 m. A wide variety …

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The design of a stoping scraper scoop

other mining methods with different design parameters, and it is not suggested that the scraper scoop described in the following pages is the ultimate design for all situations. Mining Conditions The following are the conditions under which the scraper scoop was required to operate: *Stilfontein Gold Mining Company Limite:l, Stilfontein, Transvaal.

JCF 212 Scraper Winches

Underground Mining Equipment. Scrapers & Scraper Winchers. ... Galison manufacturers scraper winches to the original Exdin Winches drawings. The winches are made to the highest quality standards at our factory in Welkom. The range includes the 37kW LF230, 37kW SLF 230 and 55kW JCF 212 winches. Galison carry a large stock of all the …

Potential for the mechanization of stoping in gold mines

mining started from the surface, and in others mining has been pursued to depths of more than 3,5 km. The combined length of the stope face on all the mines amounts to about 500 km, and about 80000 ca* are mined each working day. During 1973, some 400000 persons were employed in the gold-mining industry. CONVENTIONAL STOPING METHODS

Basic principles for stable gullies in the gold and …

A gully is an excavation cut in the immediate footwall or hangingwall of the reef for the purpose of enabling the removal of rock from the face or providing access to the face for mining personnel or material1. The gully sidewalls and hangingwall often pose a serious stability problem in the gold and platinum mines in South Africa, since ...

Benefits and Applications of Motor Scrapers in Earthmoving

In mining operations, motor scrapers play a crucial role in various tasks. They are used to remove overburden, which refers to the layers of soil, rock, and other materials covering the desired mineral deposits. Motor scrapers efficiently remove and transport overburden, allowing access to the valuable minerals beneath.

Loading and hauling of broken rock in a narrow tabular …

Scraper systems account for 23% of the transportation accidents in the gold mining sector and 36% in the platinum mining sector. Most injuries (59%) occur during the morning shift, which is most ...

Implementation of state-of-art mining knowledge and …

• Routine face-normal preconditioning to prevent face bursting and enhance advance per blast. • Water jet assisted scraper face cleaning. Assists with preliminary barring and dust suppression. • Gully shoulder support – constant yield force, low mass reinforced concrete packs or Fill-packs in backfilled stopes.

TAILING DAM LIFT MINJAR GOLD MINE WESTERN AUSTRALIA

tailing dam lift minjar gold mine western australia During Phase 1, 11 million cubic metres of sand was extracted from Moreton Bay to form the base of the new 360-hectare airport expansion site. K-Tec scrapers were used to achieve bulk sand handling, surface preparation and compaction.

Mining of Alluvial Gold Ore Deposits

1.Overview of Alluvial Gold Deposit Mining. Here I mainly introduce the method of opencast mining. Open-pit mining of alluvial gold is divided into three categories according to the different mining machinery used: (1) Gold Dredger mining: it is a combination mining, walking and washing and selecting facilities in one, floating on …

Investigation into causes of accidents on scraper …

Safety In Mines Research Advisory Committee Project Summary : training and its practical application to the actual Project Title: Investigation into causes of accidents on scraper systems in the Gold and Platinum mining sectors Author(s): R. Moseme, S.M. Rupprecht, P.J. Foster and R.L. Demana Agency: CSIR Miningtek and Camborne School of Mines

Zondereinde Mine

The Zondereinde mine is an underground operation located in Limpopo Province, South Africa. It is adjacent to the Amandelbult mine owned by Anglo Platinum. The mine consists of two reefs namely …

Scraper winch pull force investigation

Scraper winches in operation The scraping of ore and moving it to the ore pass at all Anglo Platinum conventional mining operations is done by using 37 kW and 55 kW double drum single speed electric scraper winches. A 37 kW winch and one scoop are used for cleaning the face, whereas the material in the ASG and centre gulley is