Recovery of iron from cyanide tailings with reduction .
Cyanide tailing is a kind of solid waste produced in the process of gold extraction from gold ore. In this paper, recovery of iron from cyanide tailings was studied with reduction roasting-water leaching process followed by magnetic separation.CA2866770A1 - Extraction process of clay, silica and iron ore . This invention refers to a water-less extraction process to collect clay, silica and iron ore from tailings taken from tailings dams and deposits by drying, dry sifting, density separation, mechanical friction separation, air classifi ion separation, milling and magnetic separation.Tackling tailings: extracting value from a liability to the . Holland notes that while the Combo X900, and smaller Combo X400, were originally designed to process natural sand and crushed rock, containing unwanted clay, silt and other organic contaminants and extract washed sand products, the Combo is equally effected for tailings recovery, dewatering, dry stockpiling and sludge management.
Generating cash from tailings: A "green chemistry" approach .
Calgary-based Titanium Corp has also been working with an unspecified oil sands operator for the past decade to extract various metals, particularly zirconium, from fine tailings. Dubbed "Creating Value from Waste" CVW , Titanium Corp& 39;s process is designed to be embedded directly into the oil sands operator& 39;s process, intercepting tailings .Toward Closing a Loophole: Recovering Rare Earth Elements . If properly planned and executed, extraction of REE from historic metallurgical process tailings can form part of the remediation of these sites. There can be different challenges, for example, accessing the material may be difficult due to the lower stability of the site compared with hard rock deposits.Highly efficient utilization of hazardous vanadium extraction . Tailings A and B derived from Panzhihua Iron and Steel Group Corporation, Sichuan Province, China were used in the present study. Both the two tailings are the residual slags after extracting vanadium from VSHC using the calcifi ion roasting-acid leaching process. Tailing A was desulfurized, while tailing B was not.
Clean energy technology to come from ‘waste’ at Whitehorse .
The tailings are a byproduct of the former mine’s milling operation and are rich in magnetite iron ore, Greetham found. Most commercially viable deposits of magnetite ore contain between 50 and 60 per cent iron. The copper mine site ore presented as 68 per cent iron, making it “ultra clean” and valuable to global markets, Greetham said.Development of copper recovery process from flotation . The result showed that 91.3% copper was recovered in a stripped solution and 98.6% iron was removed under the optimal extraction conditions. As a result, 86.2% of copper was recovered from the concentrate of flotation tailings by a proposed HPL‒solvent extraction process.An eco-friendly method for heavy metal removal from mine tailings These byproducts of the process of extraction of valuable elements from ores are a source of pollution and a threat to the environment. For example, mine tailings from past mining activities at Giant Mines, Yellowknife, are deposited in chambers, stopes, and tailing ponds close to the shores of The Great Slave Lake.
Iron Mining Process - Minnesota Iron
The iron ore is separated from the taconite using magnetism. The remaining rock is waste material and is dumped into tailings basins. The taconite powder with the iron in it is called concentrate. Pellets The concentrate the wet taconite powder is rolled with clay inside large rotating cylinders.CA2866770A1 - Extraction process of clay, silica and iron ore . This invention refers to a water-less extraction process to collect clay, silica and iron ore from tailings taken from tailings dams and deposits by drying, dry sifting, density separation, mechanical friction separation, air classifi ion separation, milling and magnetic separation.Converting Tailings Dumps into Mineral Resources Energy . Extraction of valuable metals from tailings dumps or residues or low grade stockpiles traditionally regarded as waste, has long been researched by metallurgists. A number of developments in mineral processing technology have combined to make the retreatment of numerous tailings dumps a profitable proposition.
Iron-Bearing Wastes – Hazards and Potential Utilization .
The steady increase in iron-containing waste reserves and the reduction of natural ore reserves indi e the need to process tailings and other mineral wastes. Currently, there are several different ways to utilize iron ore tailings: The extraction or re-extraction of useful metals such as iron, cobalt, nickel and aluminum.Recovery of uranium from low-grade tailings by electro . Using pure iron as an electrode had a clearly positive effect in improving the uranium extraction ratio, as can be seen from Fig. 2E. This is because the iron anode provided Fe III as an oxidant and promoted the oxidation of the tetravalent uranium in the tailings.Generating cash from tailings: A "green chemistry" approach . Calgary-based Titanium Corp has also been working with an unspecified oil sands operator for the past decade to extract various metals, particularly zirconium, from fine tailings. Dubbed "Creating Value from Waste" CVW , Titanium Corp& 39;s process is designed to be embedded directly into the oil sands operator& 39;s process, intercepting tailings .
How to handle mine tailings safely and sustainably? - MINING.COM
The practice of dewatering tailings, however, is still limited to few areas globally. According to Metso’s analysis, only 5% of tailings generated in 2018 were dewatered into thickened, paste .