Results 11 to 20 of about 65,980 (242)
Molecules, 2023 The purpose of this work is to significantly improve the vanadium grade of vanadium-bearing shale after flotation preconcentration, which is conducive to reducing the acid consumption and industrial costs in the subsequently enhanced acid leaching of ...
Yue Tang, Guohua Ye, Qi Zuo
doaj +1 more source
Leaching of vanadium, potassium, and iron from spent catalyst of the manufacture of sulfuric acid
Journal of Materials Research and Technology, 2021 The sulfuric acid industry produces large volumes of spent catalyst containing vanadium. To develop an efficient method for vanadium recovery, hydrogen peroxide was used to oxidize sulfur in the spent catalyst, forming sulfuric acid, which, in turn ...
Liushun Wu +4 more
doaj +1 more source
Molecules, 2023 In this study, the effect of citric acid on iron leaching from titanium gypsum (TiG) was systematically investigated. The conditions for the leaching of valuable metals were optimized while varying such parameters as the leaching time, citric acid mass ...
Yan Lin +4 more
doaj +1 more source
Recovery of Barium Ions from a Barium Residue in Guizhou by Hydrochloric Acid Leaching
Kuangchan zonghe liyong, 2023 A large amount of barium slag accumulation will cause great harm to the environment. The use of hydrochloric acid leaching for barium residue can effectively recover the residual soluble barium salt in the barium residue and greatly reduce the harm of ...
Dewei Li +4 more
doaj +1 more source
Journal of Materials Research and Technology, 2023 Here, a new method of sulfuric acid cyclic leaching was proposed to selectively leach vanadium from the calcification roasting pellets of vanadium titanomagnetite. Cyclic leaching and conventional heap leaching were compared.
Zhixiang Wang +4 more
doaj +1 more source
Tikrit Journal for Agricultural Sciences, 2022 The irrigated soils in dry and semi-arid areas suffer from the problem of salt accumulation because of not using sufficient leaching water to remove the salts added with the irrigation water.
Muhsen N. Hoshan
doaj +1 more source
Metals, 2021 The ammonia leaching method for treating low-grade rhodochrosite has the advantages of a good impurity removal effect and low environmental pollution. In this paper, aiming at the low leaching efficiency of low-grade rhodochrosite treated by the ammonia ...
Peng Yang +4 more
doaj +1 more source
Controlling reactions during heavy metal leaching from municipal solid waste incineration fly ash [PDF]
Journal of the Serbian Chemical Society, 2023 This research aimed to characterize the physical and chemical properties of municipal solid waste (MSW) incineration fly ash, as well as to investigate the leaching of heavy metals during toxicity characteristics leaching procedure (TCLP) process.
Chen Weifang +4 more
doaj +1 more source
Microwave-assisted and regular leaching of germanium from the germanium-rich lignite ash
Green Processing and Synthesis, 2018 Demand for germanium (Ge) is rapidly growing in recent years in various fields including semiconductors, aerospace, and solar cells. However, the Ge resources are very limited in the world.
Chen Yuqian +7 more
doaj +1 more source
Recovery of Gold from the Refractory Gold Concentrate Using Microwave Assisted Leaching
Metals, 2020 Microwave technology has been confirmed to be suitable for use in a wide range of mineral leaching processes. Compared to conventional leaching, microwave-assisted leaching has significant advantages.
Kanghee Cho +5 more
doaj +1 more source