Environmental protection has become the focus of world-wide research in the gold mining industry and favours the development of environmentaly sound processes, such as the Coal Gold Agglomeration (CGA) process, which is an alternative to existing gold processing methods, such as cyanidation and mercury amalgamation. The CGA process was developed and patented by the British Petroleum (BP) resear...

Gold as a precious metal resource has high recycling significance. However, the current extraction methods cannot achieve both efficiency and environmental friendliness. In this paper, we propose new gold leaching agent, which can leach under light condition by mixing iodoform (CHI3) with 1-butyl-3-methylimidazolium dicyanamide (BmimN(CN)2) ionic liquid. Under 25 °C 13 W incandescent lamp irrad...

It is found that regions with depleted, or on the verge of depletion, mineral resources are subject to additional pressures due intensifying social and environmental problems. This paper proposes development mining industry, reducing dependence economy sharp volatility raw materials market in a period global shocks by addressing problems depleting resource base. assumed geotechnology from simpl...

The present study investigated a novel method of alkaline ferricyanide leaching to extract palladium (Pd) from Western Australian disseminated platinum-group metal (PGM) oxide ore that bears Ni and Cu. While cyanide has been used leach Pd, it is well known for its toxicity large consumption in the presence base metals. A more benign alternative, form ferricyanide, evaluated this research serve ...

The severe drought of 1983–1984 in the Sahel region, and its socio-economic impacts for people relying on farming had consequence first major gold rush at Koma Bangou southwestern part Niger. Initiated 1984, panning activities were interrupted from 1989 to 1999 with exploration permits assigned mining industry. site was reclassified year-end as a artisanal resumed until present-day. Gold such o...

The aim was to assess the technological feasibility of generating sodium cyanide by coal gasification, study effects process parameters (temperature, experiment duration, type) on concentration in resulting solutions, as well identify optimal modes process. Experiments were carried out a laboratory setup consisting tubular cylindrical furnace equipped with working compartment form corundum tube...

Artisanal gold mining is the leading source of anthropogenic mercury emissions worldwide. This article explores cost-effective leaching methods for skilled miners to address mercury's environmental and health impacts in this sector. A sample from Colombia's La Maria deposit, containing 48.87 ppm gold, ground 80% below 0.13 mm, served as basis comparison. The standard whole ore amalgamation appr...

Abstract Cyanidation has been considered an effective process for extracting gold from gold-bearing ores over 100 years. However, this also several disadvantages including it being toxic, inefficient, and unsuitable leaching carbonaceous containing organic inorganic carbons. Moreover, is not feasible the extraction of refractory , which are increasingly used.Therefore, there urgent need to find...