— Unfortunately the recovery and utilization of extracted titanium slag ETS and gold tailings GT to fabricate self glazed ceramic foams have rarely been investigated till date ETS is the residual solid waste that remains after the extraction of the titanium resources via a special process in Ti bearing blast furnace slag
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— Chemically bonded ceramics describes a group of inorganic materials that share properties with both cements and ceramics The formation of CBCs happens by chemical route much like with conventional cements while the chemical bonds and mechanical properties resemble those of ceramics see Fig 1 Chemically bonded
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Gold Fields Integrated Annual Report 2019 Tailings waste and mine closure online report developed by Bastion Report Selector View online PDF 5MB by ensuring a reduction in the waste that reaches landfill through greater use of on site waste separation and recycling During 2019 however the Group s landfill waste rose to
— V and Cr When tailings contain sulphide minerals it may also lead to acid mine drainage This makes the effective and efficient recycling and reuse of mine waste a major environmental concern However the physical mineralogical and chemical composition of the mine tailings renders it a suitable material for use in civil engi
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— Gold tailings solar salt shape stabilized phase change materials for medium high temperature thermal energy storage Author links open overlay panel Xiaoyu Wang a Carbide slag based shape stable phase change materials for waste recycling and thermal energy storage J Energy Storage 50 2022 Article 104256
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— For example Ince Ince 2019 reused gold mine tailings in cement mortars and conducted the cost effectiveness analysis to validate the efficient use of gold tailings both as cement and sand replacement in these mortars Notably using 30% of gold tailings as a binder replacement reduced CO 2 emissions from cement manufacturing by 22%
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— The type of extraction method that can be used on mine waste depends on the mineral deposits the tailings come from and what processing approach was used to generate them says Jowitt If similarities are found between systems similar approaches could be used across tailings facilities
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— RE PROCESSING GOLD TAILINGS IN SOUTH AFRICA CHRISTOPHER A FLEMING JAMES A BROwN AND MARIUS BOTHA 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
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Microstructure and strength behavior of cementitious tailings crushed rock backfill CTCRB with gold/tungsten tailings and rock contents 10% 20% 30% 40% and 50% were conducted in this
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— Increasing population levels growing economies rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals leading to growing concerns regarding their availability and the global efficiency of the mine supply chain Mine tailings consisting of process effluents
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— RE PROCESSING GOLD TAILINGS IN SOUTH AFRICA CHRISTOPHER A FLEMING JAMES A BROWN SGS AND MARIUS BOTHA 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
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— RE PROCESSING GOLD TAILINGS IN SOUTH AFRICA CHRISTOPHER A FLEMING JAMES A BROWN SGS AND MARIUS BOTHA 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
— The accumulation of gold mine tailings poses an environmental challenge The feasibility of reusing this waste to fill underground mines was investigated The tailings were mixed with Portland cement and water using a one step method The fluidity bleeding rate setting time mechanical behavior water quality analysis and toxicity characteristics
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— Lakefield ON K0L 2H0 Canada Email produces the best economic return on the operation which is not generally true of all metals are usually expected and commonly achieved Fleming 1992 The gold left in the tailings is often encapsulated in sulfide oxide and/or silicate minerals that are impervious to the
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— Secondly many gold ore bodies suffer high cyanide consumption costs as a result of the presence of base metals principally copper that react with and consume cyanide during the gold leach In most cases the cost of recovering and recycling this cyanide from the tailings is significantly lower than the cost of purchasing new cyanide
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— Figure combines the data on waste rock and tailings shown in Figs and respectively and shows the amount of total waste generated for Barrick operations between 2013 and shows total waste generated gold production and total waste generated per unit gold production Total waste generated per ounce of
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— The zeta potential of the magnetic nickeliferous pyrrhotite sample was measured at different pH values and NaCl concentrations to help explain the results shown in Fig point of zero charge PZC of the adsorbent dispersed in M NaCl solution was determined to be around pH as depicted in Fig the Eh pH predominance
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— Typical Non Metal Compounds Present in Gold Mine Tailings As in the case of copper mine tailings it is expected that in gold mine tailings there will be concentrations of total dissolved solids of non metallic compounds corresponding to i chlorides ii sulfates iii nitrates and iv ammonia [2 16 27]
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— This study proposes a cleaner chlorine for effective utilization of cyanide tailings • Thermodynamic analyses reveal that the theoretical best chlorine source is CaCl The rate of gold recovery was % by using CaCl CaCl 2 is the most environmentally friendly in regard to CaCl 2 is the best chlorine source for
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— A new approach to the recycling of gold mine tailings using red mud and waste limestone as melting fluxes Soo kyung Kim Urban Mine Research Team Mineral Resources Research Division Korean Institute of Geoscience and Mineral Resources Daejeon 305 350 Korea View further author information
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