On the basis of previous research [17], in this study, gold tailings were used as the main raw materials instead of perlite, talc, kaolin and bentonite. Then, ing agents

The tailings were of granitic composition enriched in potentially toxic elements such as copper, cadmium, zinc, lead, arsenic, and chromium. A representative sample of gold mine wastes of sandy grain size was used in making the glass. Based on composition, the glass was formulated by adding an average 10.0 mass% of CaCO3 and …

Safe disposal of tailings as high-density thickened tailings or paste tailings can reduce the environmental risks of conventional tailings deposits, reduce water use, minimize tailings storage facility footprints, reduce the potential for acid mine drainage (AMD), and minimize risks of failure, among other advantages. In the dewatering …

historic gold tailings dams in the Witwatersrand area of South Africa is being investigated. The objective is to recover uranium and residual gold from the tailings, as well as to oxidize the sulphides to eliminate long term environmental liabilities associated with acid mine drainage. The tailings from the re-processing plant will be re-

Abstract. In this work, the detailed analysis of HCN volatilization, taking place in tailing storage facilities, was made. Volatilization experiments were performed at conditions typical of gold leaching industrial tailing ponds. The meticulous statistical analysis (including full factorial 3 experimental design) let to determine the variables ...

Results suggest that UHPCs, made with up to 80% replacement of quartz sand by the tailings, exhibit compressive strengths comparable to or higher than that of the UHPC with quartz sand. 28-day strength greater than 120 MPa is achievable up to replacement. The water absorptions and the initial rate of absorptions of UHPCs with …

Gold is a highly required material for a wide range of personal and industrial applications. The high demand for gold, together with the shortage of natural resources and high pollution potential of wastes generated during mining and ore processing activities led to search for alternative sources of gold. A possible source is represented by mine …

In 2016, cumulative gold production reached 453.5 t. Many gold tailings are produced in gold mining. In 2013, the pro-duction of gold tailings reached 2.14 × 108 t(Li2018). Gold Responsible Editor: Robert Duran * Hai-Hong Gu haihonggu1982@hotmail 1 College of Mining Engineering, North China University of Science and Technology, Tangshan ...

Soil contamination with heavy metals is a serious concern to food production and human health. The present study was conducted to evaluate the impact of tailings from an old mining site on heavy metal contamination of soil. Using a GPS to map out different sites around the tailing dam, soil samples were taken from under grassland at the …

The SEM images of the refractory gold tailing indicates that before roasting the refractory gold tailing particles with varying particles sizes, angular shaped and with plane surfaces, especially for the large particles. The particles with rough and porous surface were obtained by the iodination roasting under roasting temperature 1000 °C.

It can be seen from Table 1 that the main valuable element for recovery in the tailings is gold, which has the gold grade of 10.00 g/t. Table 2 showed that the gold mainly exists in the occluded gold, in which 18.39 %, 22.18 %, and 59.43 % of gold are encased in the hematite, sulfide mineral, and silicate gangue mineral, respectively. The occluded …

gold by CIL was shown to be feasible, and it improved gold extraction by 15%, but no effect was observed for copper extraction. Percentages of 76.5% gold and 64.5% copper were extracted in 48 h at

The Mogale tailing dam is over 3 km by 2 km in length and breadth, respectively, and about 60–75 m high (Fig. 1).The water flow out of the Mogale tailing dam is controlled through a central penstock that discharges into a return water dam (Oelofse et al. 2007).The central penstock controls the general hydrological gradient, the fluid flow, …

The three most feasible approaches to tailings management and utilization are: One is to cover the soil to create fields. In areas with sufficient soil, the method of pressing 10-20 cm of soil can be used for planting, covering the soil to create fields, and expanding the area of cultivated land. This method is suitable for valley-shaped ...

Mining is an important industry, accounting for 6.9% of global GDP. However, global development promotes accelerated demand, resulting in the accumulation of hazardous waste in land, sea, and air environments. It reached 7 billion tonnes of mine tailings generated yearly worldwide, and 19 billion solid tailings will be accumulated by …

The present study focused on the tailings of an artisanal gold mine area located in the Brazilian northeastern. Samples of the mine tailings were taken and used to perform a physical and chemical characterization study using X-ray diffraction, scanning electron microscopy, neutron activation, X-ray fluorescence, induced coupled plasma …

Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications.

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Gold mining is a major source of metal and metalloid emissions into the environment. Studies were carried out in Krugersdorp, South Africa, to evaluate the ecological and human health risks associated with exposure to metals and metalloids in mine tailings contaminated soils. ... (ingestion route), Eq (6) (inhalation route), and Eq (7) …

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New Carolin Gold (TSXV:LAD) (OTC:LADFF) today reported that recent metallurgical testing of samples from tailings at its Ladner project, located not far from …

The amount of gold remaining in these types of tailing piles can be very substantial. A small mine that produced 10,000 ounces of gold with a loss rate of 20%, which is not extreme at all, could mean 2,000 ounces or more sitting in the tailing piles waiting for the savvy miner with a proper recovery system. The screening systems were tailored ...

1 1 THE MECHANICS OF A SILT-SIZED GOLD TAILING 2 3 W. LI1, M. R. COOP2, K. SENETAKIS3* and F. SCHNAID4 4 5 Author lists: 6 W. LI1, Department of Civil Engineering, The University of Hong Kong, Pokfulam road, Hong 7 Kong. liwei890508@126 8 M. R. COOP2, Department of Civil, Environmental and …

Abstract: At present, gold mines are increasingly scarce in the world. The yield of cyanidation tailing (CT) of refractory gold ores with a grade of 10 g/T is huge; however, the effective capitalization of the cyanidation tailing is a significant problem in the gold industry. In this work, a new treatment method, a microwave-roasting process ...

The estimated excess PWPs for gold tailings [30] were of the order of 40 kPa for the height of tailings slurry of 2 m assumed to have a saturated gold tailings unit weight of 20kN/m 3 .

Degraded landscapes adjacent to gold tailing storage facilities (TSFs) typically suffer from loss of ecosystem function as a result of seepage pollution. Restoration of these areas has become a primary concern in the fields of environmental science and management within recent decades. To assess the extent of land degradation, detailed …

Location maps for the study area at the outlet of Wadi Abbadi and areas to the south (outlined by the red box in Fig. 1), Wadi Abbadi watershed, the irrigation and drainage canals, tailing and amalgamation sites, and sampling locations. a) Mean annual precipitation (2014–2018) over the Wadi Abbadi basin and its stream networks plotted …

AMF also increased N. orientalis L. growth on gold tailing medium (Tuheteru et al., 2020) and serpentine soil . However, the effect of local AMF on the growth of lonkida under drought and ...

Soilless revegetation is an efficient way for gold tailing remediation, and micro-ecological environments in plant rhizosphere are important for vegetation establishment and pollution removal. In the present study, a field experiment of soilless revegetation has been carried out in a gold tailings pond, and the key genera and …

has been achieved (American Society for Quality, 2019).From Figure 1, the toxic components of slurry or tailing slurry that may come out of the plant, are relatively high levels (i.e. levels are above environmental standard levels as per Table 1) of cyanide, lime and caustic (measured in pH).Besides, the moisture content of the solid potion of the …

The chemical analysis of the gold tailing (RGT) and pyrite are shown in Table 1. The occurrence of gold in the different phases of the gold tailing is shown in Table 2 (Detection was carried out in Changsha Research Institute of Mining and Metallurgy, China), it indicates that exposed gold is only 13.10% and up to 86.90% of gold is encapsulated.

The present invention provides a gold mine cyanide tailing disposal method using paste technology belonging to the technical field of mining. The disposal method firstly performs a harmless decyanation treatment on a cyanide tailing slurry obtained from a mineral processing plant, and then performs a resource treatment where a cyanide tailing slurry …

The materials used for this work were iron tailings, gold tailing and tin tailing. Iron tailings were collected from Itakpe tailings dump in Kogi State North Central Nigeria and the location lies on the coordinate 7°36′28″ N and 6°18′37″ E. Gold tailing was collected from Bagega Anka tailings dump in Zamfara State, Northwest Nigeria and the location …

Patented Gold Mine For Sale - USA. Previously Producing Patented Gold Mine for Sale in the USA. $1.6 Billion Estimated & Inferred Resources including 80,000 tons in Mill …