Fei Wang

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Verified

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• Doctor of Philosophy
• Professor (Assistant) at Université Laval

Global warming due to increased greenhouse CO2 gas emissions and increasing nickel demand are two issues that are challenging the sustainable development of the modern world. These challenges can be met in one process whereby CO2 mineralization can be utilized for simultaneous mineral carbonation to stabilize CO2 gas and concurrent nickel sulfidiza...

Carbon sequestration by mineral carbonation of basic silicate minerals is an important technique for climate change mitigation, because of the formation of stable mineral carbonate products and the abundant resources of amenable minerals in nature. In practice, direct aqueous mineral carbonation may need to treat natural multiple-mineral mixtures i...

Mineral carbonation (MC) is one of the most important methods to sequester CO2 due to the advantages of permanently storage and abundant mineral resources. This work was designed to investigate the MC chemistry and kinetics in order to further develop carbonation technology. The comprehensive effects of all factors on MC of olivine were investigate...

Global warming mitigation is an urgent issue all over the world and the mineralization for CO2 sequestration is one of the best methods to permanently store CO2 gas. The current work has developed a quantified mineralization formula through the systematic investigation of the kinetics of mineralization of a dunite containing high-grade olivine unde...

Action is currently being taken globally to mitigate global warming.The objective of reducing CO 2 emissions is not a burden for society but is a significant opportunity for evolution in various industries for the sustainable production of energy and the essential minerals, metals, and materials required for modern society. CO 2 mineralization is o...

CO2 mineral carbonation is an important method to sequester carbon dioxide (CO2) in the form of stable mineral carbonates for permanent storage. The slow kinetics of carbonation, especially for iron-rich olivine, is the major challenge for potential application. This work proposes methods to accelerate the mineral carbonation process of different m...

Selective battery metal extraction Laterites Pre-treatment through calcination Nickel and cobalt Carbon mineralization A B S T R A C T The world needs an increasing supply of nickel and cobalt production as battery materials for sustainable development. However, the complexity of laterite deposits and the need to control CO 2 emissions challenge th...

The path to carbon neutrality and transition to global clean energy require accelerated CO2 sequestration and enhanced supply of critical metals. Comprehensive utilization of ultramafic tailings is a promising route to achieve these goals since these materials contain abundant suitable minerals for CO2 mineralization and residual critical metals fo...

The global clean energy transitionClean energy transition requires CO2 emissionCO2 emission reduction with a concurrent increase in the global supply of critical battery metals. A process has been developed at the lab scale. The hydrometallurgical process achieves CO2 mineralizationCO2 mineralization and selective battery metal recovery from olivin...

The reduction of CO2 emissions through both carbon capture utilization and storage and clean energy transition is accelerating all over the world. However, the global supply of required battery metals for clean energy transition is in deficit and the effective CO2 mineralization for permanent CO2 storage is still in challenge. It has been found in...

Laterites are important nickel and cobalt natural resources. However, the current production technologies are challenged by limited application to different laterites ore types and large carbon footprints. The clean energy transition requires enhanced production of nickel and cobalt for battery manufacture with significant progress toward carbon ne...

Carbon dioxide utilization for enhanced metal recovery (EMR) during mineralization has been recently developed as part of CCUS (carbon capture, utilization, and storage). This paper describes fundamental studies on integrating CO 2 mineralization and concurrent selective metal extraction from natural olivine. Nearly 90% of nickel and cobalt extract...

Global warming mitigation strategies include reducing CO2 emissions and encouraging the use of battery-powered electrical vehicles. Nickel in olivineOlivine which is an important mineral of many nickel sulfide mines and suitable for permanent CO2 sequestrationCO2 sequestration is regarded as non-recoverable and discarded in mine tailingsMine tailin...

Mineral carbonation for global warming mitigation has attracted worldwide attention. The combination of mineral processing for primary metal recovery and mineral carbonation for carbon sequestration is an emerging field of study with the potential to minimize capital costs. A quantified kinetic formula of mineral carbonation was tested for applicat...

Mineral carbonation (MC) has been extensively researched all over the world since it was found as a naturally exothermic process to permanently sequester CO2. In order to accelerate the natural process, various methods for carbonation of Mg-/Ca- silicate minerals have been studied. It has been found that the MC efficiency will increase with an incr...

A comparison between unassisted and calcium fluoride-enhanced leaching demonstrated that calcium fluoride can markedly boost the efficiency and accelerate the rate of vanadium leaching from stone coal. Analyses methods were adopted to identify the mechanism of calcium fluoride-enhanced vanadium leaching from stone coal, including Inductively Couple...

Stone coal was direct acidic leached and roasting acidic leached respectively. The effects of introducing fluoride into leaching systems on vanadium extraction were investigated. The results show that it is reasonable to adopt direct leaching with fluoride and solvent extraction. The leaching rate of vanadium is 92.39%, pre-treatment loss efficienc...

The effects of microwave roasting of different grain sizes for vanadium extraction from stone coal were investigated. The results showed that, the sintering phenomenon of 0~3 mm part during roasting process was obvious. The V2O5 leaching rate of this part was 58% when the sample was microwave roasted at 800°C for 30 min, the volume fraction of sulf...

The stone coal obtained from a certain area of Jiangxi in China was used as raw materials. The experiments of raffinate recycling utilization were carried out with a process of direct acid leaching, solvent extraction, stripping, vanadium precipitation and calcining. The relationships of the leaching efficiency of vanadium, extraction rate of vanad...

Possible chemical reactions during direct leaching of vanadium from stone coal with calcium fluoride were discussed. The main vanadium-bearing mineral was phlogopite. The thermodynamics was analyzed and the leaching reaction model was established. The results show that the mechanism of calcium fluoride to enhance leaching of vanadium from stone coa...

The behavior of leaching vanadium from stone coal with calcium fluoride was researched under the conditions of 95°C, 4 h, 1 ml·g-1, 15%(volume fraction) H2SO4 and 5%(mass fraction) calcium fluoride. The leaching rate of vanadium could reach 92.39%. Through the analyses of inductively coupled plasma atomic emission spectroscopy (ICP-AES), valence st...

With aid of FactSage’s thermodynamic analysis software,the effect of addition of fluorine-containing leaching agent on sulfuric acid leaching of blank roasted residue of stone coal was investigated.The results show that addition of fluorine-containing leaching agent can not strengthen direct reaction between sulfuric acid and vanadium in roasted re...

The mineral properties of stone coal with different grain sizes and its effects on vanadium extraction were studied.The results show that CaO content in ore and viscosity of leaching slurry increase gradually with decrease of particle size.The vanadium leaching rate first rises and then drops with decrease of particle size from +0.300mm to-0.038 5m...

Regarding the stone coal roasted without any additive from Hubei province as the research target, the impact of F-contained leaching agent A on acid leaching of vanadium was studied. The results showed that F in F contained leaching agent A can break Si-O bond and Al-O bond in muscovite crystal structure, destroy the mica structure, and clear the p...

The process of blank roasting-sulphuric acid leaching of vanadium with leaching agent was studied by using the stone coal in Hubei province as raw materials. The influence of roasting temperature, roasting period, dosage of leaching agent and extraction temperature on the leaching of vanadium was observed individually when the liquid-solid ratio re...

The mechanisms of aid-leaching reagent calcium fluoride in the extracting vanadium processes were researched by comparing the blank extraction with the extraction with calcium fluoride as aid-leaching reagent. The leaching experiments were carried out under the conditions of 95 °C, 6 h, 1.5 ml·g−1, 15 vol % H2SO4, and 5 % calcium fluoride (mass rat...

Based on the grinding kinetic theory, a size division method for grinding particle in stage grinding was proposed, and the problem of energy consumption was therewith transferred into a mathematic problem concerning the least equivalent grinding time. Through the analysis of the interrelation between the grinding time and the yield of rough concent...

A software for design calculation of sintering plant was developed based on Visual Basic Language., all parameters of related equipment were imported into the software to guide the selection of equipment. The software can be widely applied and can meet the requirements of different sintering process design calculations. It can greatly reduce the wo...