gold tailings recovery

• 

  Re-Processing Gold Tailings in South Africa

  2024619 · ABSTRACT The technical and economic feasibility or re-processing hundreds of millions of tons of tailings in a number of 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 …

  view more
• 

  (PDF) Evaluation of pre-treatment methods for gold recovery …

  2022114 · 561 The Journal of the Southern African Institute of Mining and Metallurgy VOLUME 122 OCTOBER 2022 Evaluation of pre-trea tment methods f or gold recovery from refractory calcine tailings by P ...

  view more
• 

  The Recovery of Gold in Low-Grade Cyanide Tailings by

  202384 · The resource utilization of cyanide tailings has significant environmental and economic benefits. The efficient recovery of gold from low-grade cyanide tailings containing 1.71 g/t Au was performed by a chlorination roasting–flotation process. The effects of roasting temperature, calcium chloride, internal coke, external coke, copper sulfide …

  view more
• 

  Towards mine tailings valorization: Recovery of critical …

  202081 · Abstract The mining industry produces large volumes of mine tailings – a mix of crushed rocks and process effluents from the processing of mineral ores. Mine tailings are a major environmental issue due to implications related to their handling and storage. Depending on the mined ore and the process used, it may be possible to recover …

  view more
• 

  Life cycle assessment as a design consideration for process …

  2022615 · In this work two gold recovery flowsheets were identified for 71.2% gold recovery from tailings dams in the West Rand, Witwatersrand region of South Africa. The two flowsheets based on a traditional cyanide technology and alternate thiosulphate technology were evaluated for environmental impacts using life cycle assessment (LCA).

  view more
• 

  Investigation on the recovery of gold from pretreated cyanide tailings ...

  202112 · ABSTRACT In this work, a method for the extraction of gold from the cyanide tailings (CT) was investigated. Sulfuric acid was used as a pretreatment leaching solution and calcium hypochlorite was used as a chloride agent during the chlorination leaching. Under different conditions, the potential difference of the chlorination reaction is …

  view more
• 

  Far West Gold Recoveries operation, South Africa – update

  2024223 · Far West Gold Recoveries (FWGR) operation. Gauteng, South Africa. DRDGOLD’s acquisition of Sibanye-Stillwater’s (Sibanye’s) West Rand Tailings Retreatment Project assets was finalised on ...

  view more
• 

  gold tailings processing equipment, gold tailings …

  202121 · From economic, societal and environmental perspectives, the recovery of REE from mine tailings or industrial/domestic waste could be beneficial relative to primary deposits to give them a second life (circular economy) and to limit their environmental footprints (sustainability).

  view more
• 

  A systematic review of sustainable gold extraction from raw …

  202231 · Drawing on recent experimental and commercial developments, this review reappraises potential substitute leach reagents for cyanide in the gold mining sector. In addition to extraction, the application of these reagents in the gold processing, pre-treatment and gold purification stages is explored. The main objective here is to discuss how the …

  view more