Results 1 to 10 of about 33,607 (169)

Study on Adding Ammonium Hydrogen Fluoride to Improve Manganese Leaching Efficiency of Ammonia Leaching Low-Grade Rhodochrosite

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, Xiaoping Liang, Chengbo Wu, Tengfei Cui, Yu Wang   +4 more
doaj   +3 more sources

A new process for extracting vanadium by direct calcification using the heat of molten vanadium slag [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2022
A novel technology for extracting vanadium from molten converter vanadium slag was studied at the laboratory scale by oxidation and calcification. The effect of the cooling method, CaO addition, and reaction time on the phases of calcified vanadium slag ...
Qu J.-W., Zhang T.-A., Lv G.-Z., Chen Y.
doaj   +1 more source

An Experimental Study on the Kinetics of Leaching Ion-Adsorbed REE Deposits with Different Concentrations of Magnesium Sulfate

Metals, 2023
As an important substitute for ammonium-free leaching, magnesium sulfate is applied as a leaching agent for the mining of ion-adsorbed REE (rare earth element) deposits. Upon deriving the equation regulating the leaching kinetics on the basis of the REE “
Min Han, Dan Wang, Yunzhang Rao, Wei Xu, Wen Nie   +4 more
doaj   +1 more source

ESO-LEACH: PSO based energy efficient clustering in LEACH

Journal of King Saud University - Computer and Information Sciences, 2021
Low Energy Adaptive Clustering Hierarchy (LEACH) algorithm has various demerits like picking of cluster head during each round which depletes energy of the node, non consideration of residual energy to name a few. Due to this, researchers are focusing on ways to boost the LEACH algorithm and making it more efficient for practical use.
Gaurav Kumar Nigam, Chetna Dabas
openaire   +2 more sources

Enhancement of Leaching Copper from Printed Circuit Boards of Discarded Mobile Phones Using Ultrasound–Ozone Integrated Approach

Metals, 2023
The recovery of metals from discarded mobile phones has been of interest due to its environmental and economic benefits. This work presents a simple and effective approach for leaching copper (Cu) from the printed circuit boards of discarded mobile ...
Nguyen Thi Hong Hoa, Nguyen To Hoan, Nghia Nguyen Trong, Nguyen Thi Ngoc Linh, Bui Minh Quy, Thi Thu Ha Pham, Van Que Nguyen, Phuoc Nguyen Van, Vinh Dinh Nguyen   +8 more
doaj   +1 more source

An environmentally friendly hydrometallurgy process for the recovery and reuse of metals from spent lithium-ion batteries, using organic acid

Open Engineering, 2022
The increasing use of lithium-ion batteries (LIBs) presents a serious environmental problem. These spent LIBs are suitable sources of metals for the production of LIB cathode active material. This study successfully recovered nickel, cobalt, and aluminum
Jumari Arif, Yudha Cornelius Satria, Nizam Muhammad, Dyartanti Endah Retno, Suranto, Purwanto Agus   +5 more
doaj   +1 more source

Hydrometallurgy leaching of manganese from electrolytic manganese anode slime using hydrogen peroxide as reducing agent

工程科学学报, 2023
Manganese is one of the important strategic resources in China, and there is a saying that “no manganese, no steel”. In 2020, China’s output of electrolytic metal manganese was 1501300 tons, accounting for 96.5% of the global output.
Jun-jie ZHAO, Lin-hong CAI, Jian-cheng SHU, Jing CAO, Yong YANG, Meng-jun CHEN   +5 more
doaj   +1 more source

Effects of Ammonium Salts on Rare Earth Leaching Process of Weathered Crust Elution-Deposited Rare Earth Ores

Metals, 2023
In order to reveal the influence of ammonium salts on the rare earth leaching process of weathered crust elution-deposited rare earth ores, ammonium acetate, ammonium chloride, and ammonium sulfate were used as leaching agents.
Zhenyue Zhang, Changyu Zhou, Wendou Chen, Fei Long, Zhuo Chen, Ru’an Chi   +5 more
doaj   +1 more source

Comparative Study for Selective Lithium Recovery via Chemical Transformations during Incineration and Dynamic Pyrolysis of EV Li-Ion Batteries

Metals, 2021
Selective leaching of Li from spent LIBs thermally pretreated by pyrolysis and incineration between 400 and 700 °C for 30, 60, and 90 min followed by water leaching at high temperature and high L/S ratio was examined.
Srija Balachandran, Kerstin Forsberg, Tom Lemaître, Nathália Vieceli, Gabriele Lombardo, Martina Petranikova   +5 more
doaj   +1 more source

Oxidation leaching of chromium from electroplating sludge: Ultrasonic enhancement and its mechanism

Frontiers in Chemistry, 2022
The oxidation leaching of chromium from electroplating sludge was investigated, and ultrasonication was introduced for the enhancement of the leaching process.
Kaihua Huang, Lizhangzheng Wang, Lizhangzheng Wang, Yong Wen, Kuang He, Mingyang Zhang, Jianwei Du, Xiaoying Hu   +7 more
doaj   +1 more source