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·The copper smelting process produces plenty of copper slag every year which is a hazardous solid waste but a secondary resource In the present study the extraction of copper nickel and cobalt from copper slag was investigated through the process of sulfation roasting water leaching and the process of sulfation roasting sulfate decomposition
·Metal recovery as a function of potential Eh by oxidising leaching with H 2 SO 4 of copper slag 10% solid particle size 100% <100 μm pH temperature 70 °C leaching time 180 min Fig 8 also indicates that leaching at high potentials can reduce the leaching time 65% copper was extracted after 180 min at 450 mV and only 60 min at
·Slags from the Silesia Cracow Upland Poland including ten historical slags deposited in waste dumps and four contemporary slags from current production were examined to compare their chemical and mineralogical properties as well as to assess their potential for the recovery of selected metals and critical raw materials The historical slags
·The study of copper Cu recovery is crucial for the entire recovery process of waste printed circuit boards WPCBs and Cu can be leached efficiently via a sulfuric acid hydrogen peroxide
·One of the greatest environmental challenges in metal extraction is the generation of a large amount of slag Most of these slags contain insufficient amounts of valuable metals for economical revalorization but these concentrations may be harmful for the environment At present more than 80% of the global copper products are obtained by the
·Methods for metal recovery from solid/liquid waste streams are critically reviewed 2018 and steel slag Guo et al 2019 can be used as the partial replacement for concrete production These wastes can be used as the binding material since they contain high amount of silicates and alumina and also possess pozzolanic properties
·Steel slag is a by product generated during the steelmaking process constituting 15 to 20 % of crude steel production [3] Steel slag possesses significant sensible heat carbon sequestration potential and resource utilization capacity all of which are crucial for reducing CO 2 emissions in the steel industry Given its high heat content in the molten state
·Initially the slag contained 2 wt% Ni and 1 wt% Cu Co and P each added as oxides and at PO2 = 10⁻⁷ atm these metals were only present in the slag with no metal alloy formed
·The harmless treatment of historical lead smelting slag LSS is of significance to ecological and environmental protection but it is still challenging in terms of the economic feasibility of
·Innovative strategy for comprehensive utilization of vanadium slag maximizing valuable metals recovery and minimizing hazardous waste generation Introduction Vanadium a significant strategic metal widely used in chemical industry steelmaking and energy applications Tan et al 2023 Wang et al 2023b is primarily extracted from
·BOS slags due to metal droplet slag gas reactions and 4 energy and materials recovery from molten BOS slags The paper aims to provide the state of the art understanding and new
·BOF steel slag is a main by product in steelmaking The valorization of BOF slag is good for the industry and the environment In the present study the carbo thermic reduction of BOF slag has been investigated the reduction of Fe and P containing phases i e oxide and compounds is discussed and the effects of Al2O3 additions on the reduction process are
·The grown demand of current and future development of new technologies for high added value and strategic metals such as molybdenum vanadium and chromium and facing to the depletion of basic primary resources of these metals the metal extraction and recovery from industrial by products and wastes is a promising choice Slag from the
·In the present paper recovery of valuable metals from copper smelter slag of Balkhash copper plant Kazakhstan was investigated To recover Fe Zn and Cu to water soluble form the mixture of 150 g of copper slag and 60 g of 85% sulfuric acid was granulated and then roasted in the temperature range of 473 643 K 200 370 °C followed by sulfuric acid
·BF slag through a hydrometallurgy technique using H 2 SO 4 as a leaching agent The recovery investigation has also reported that the codissolution of inorganic metal oxides such as MgO
·The recovery of valuable metals from copper slag CS is an effective way to realize its resource utilization However the use of fossil reductants in the reduction process can result in large amounts of carbon dioxide emissions Therefore a low carbon method for recovering valuable metals from CS using castor oil as a green reductant is proposed in this
·Conventionally little chemical adjustments are made to the slag prior to its processing for subsequent use or disposal However recent attempts have looked into modifying the chemical composition of slag while hot to render its chemistry and properties suitable for high value products or recovery of minerals/metals from slag [11 12] Nonetheless the majority of
·Recovery of Valuable Metals from Nickel Smelting Slag Based on Reduction and Sulfurization Modification Wei Sun Xiong Li Runqing Liu Qilin Zhai and Jie Li Citation Sun W ; Li X ; Liu R ; Zhai Q ; Li J Recovery of Valuable Metals from Nickel Smelting Slag Based on Reduction and Sulfurization Modification Minerals 2021 11 1022
·Copper is an indispensable base metal in society and more than 80% of present copper is produced from copper sulfide minerals through pyrometallurgical technologies Gorai et al 2003; Masahide and Honda 2021; Yin et al 2018 In the matte production process copper smelting slag is the main by product which is mainly composed of the glassy phase and some
DOI / Corpus ID 258810699; An Overview of Precious Metal Recovery from Steel Industry Slag Recovery Strategy and Utilization article{ShekharSamanta2023AnOO title={An Overview of Precious Metal Recovery from Steel Industry Slag Recovery Strategy and Utilization} author={Niladri Shekhar Samanta and Pranjal Pratim Das and Simons Dhara and
·Steel slag from an electric arc furnace EAF may contain significant amounts of oxides of valuable metals The recovery of iron and other metals from the EAF slag using smelt reduction process
·In general the recovery of metals such as copper cobalt nickel and zinc in an oxidizing medium is enhanced This route also improves the performance of the solid liquid separation step preventing the formation of silica gel deposits [27] Apparently an oxidative acid leaching of FeNi slags for metal recovery has not been described
·<p>Titanium bearing blast furnace slag BFS has valuable compositions and potential environmental hazardousness Thus developing efficient and green approaches to utilize BFS is highly desired for resource economization and environmental protection In the past decades many attempts have been adopted to reuse BFS efficiently and significant advances