Results 61 to 70 of about 42,119 (320)

The modified red mud reduction smelting

Kompleksnoe Ispolʹzovanie Mineralʹnogo syrʹâ/Complex Use of Mineral Resources/Mineraldik Shikisattardy Keshendi Paidalanu, 2018
The article presents the results of investigations of complex processing of red mud obtained from high-alumina bauxites of alumina production by the smelting reduction method. Red mud is a production waste that contains useful components and can used as a complex raw material for the production of pig iron, rare earth element (REE) concentrates and ...
R.A. Abdulvaliev, N.K. Akhmadieva, С.V. Gladyshev, L.M. Imangalieva, A.I. Manapova   +4 more
openaire   +1 more source

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Prices and production cost in aluminium smelting in the short and the long run [PDF]

, 2003
The main objective of this work is to reflect the structural changes that have characterized the aluminium industry over the last few decades. I order to capture the changes in competition I have estimated cost and related it to output prices by ...
Figuerola-Ferretti, Isabel
core   +1 more source

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Behaviour of iron during reduction of slag obtained from copper flash smelting

Metalurgija, 2015
In a technological process of copper production in the flash smelting furnace, slags with high metal contents, such as copper, lead and iron, are generated.
G. Siwiec, M. Sozańska, L. Blacha, A. Smalcerz   +3 more
doaj  

Etching‐Expanded Anode: A Method to Improve the Reduction Efficiency of Vacuum Thermal Reduction of Spent Anode to Spent Ternary Cathode

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Etch‐expanded lithium ion battery anode vacuum carbon thermal reduction lithium ion battery anode flow chart. Vacuum carbon thermal reduction has been widely studied for the recovery of ternary lithium batteries, and there are many choices for the type of carbon to be reduced in this method, such as expensive carbon nanotubes and inexpensive battery ...
Jun Li, Yang Tian, Bin Yang, Baoqiang Xu, Junxian Hu, Songli Wang   +5 more
wiley   +1 more source

Review of man-made mineral formations accumulation and prospects of their developing in mining industrial regions in Ukraine [PDF]

, 2019
Purpose. Analysis of the man-made mineral formations of ore mining and smelting, fuel and energy complexes development accumulation, location and prospects amount in the Dnipropetrovsk region. Methods. Comprehensive approach, including analysis of state
Kuzmenko, O, Lozynskyi, V, Petlovanyi, M, Popovych, V, Sai, K, Saik, P   +5 more
core   +1 more source

ESG Performance and Credit Risk: Evidence From Chinese Manufacturing Companies

International Journal of Finance &Economics, EarlyView.
ABSTRACT This study investigates the effect of corporate environmental, social, and governance (ESG) performance on credit risk using a sample of manufacturing firms listed on China's Shanghai and Shenzhen A‐share markets from 2009 to 2021. Employing fixed effects, the generalised method of moments, and instrumental variable models, we find that ...
Yanan Wang, Xiao Zhang, Michal Wojewodzki, Yuxin Jian, Fadey AbiDaoud   +4 more
wiley   +1 more source

Subchronic Exposure to Arsenic and Nickel Triggers Nitrosative Stress and Histological Alterations in the Rat Liver

Journal of Applied Toxicology, EarlyView.
ABSTRACT Environmental exposure to heavy metals poses a threat to human health. Several studies documented harmful effects on the liver after arsenic and nickel exposure at concentrations beyond permissible limits. Nevertheless, the impact of a simultaneous exposure to both elements on hepatic biochemistry and histology remains unelucidated. Therefore,
Thainá Iasbik‐Lima, Luiz Otávio Guimarães‐Ervilha, Isabela Pereira da Silva Bento, Renê Chagas da Silva, Mariana Machado‐Neves   +4 more
wiley   +1 more source

Chemical and electrochemical pathways to low-carbon iron and steel

npj Materials Sustainability
Currently, the iron and steel industry is responsible for 7% of global CO2 emissions. In this review, we summarize the operational principles of current emissions-intensive steelmaking technologies and review emerging low- and zero-carbon technologies ...
Kerry Rippy, Robert T. Bell, Noemi Leick
doaj   +1 more source