Results 101 to 110 of about 1,040,720 (337)

Model-Free Adaptive Control of Hydrometallurgy Cascade Gold Leaching Process with Input Constraints. [PDF]

ACS Omega, 2023
Dong S, Zhang Y, Zhou X, Niu D, Wang X.
europepmc   +1 more source

Improvement of Gold Leaching from a Refractory Gold Concentrate Calcine by Separate Pretreatment of Coarse and Fine Size Fractions

, 2017
A total gold extraction of 70.2% could only be reached via direct cyanidation from a refractory As-, S- and C-bearing gold concentrate calcine, and the gold extraction varied noticeably with different size fractions.
Qian Li, Zhang Yan, Xiaolian Liu, Bin Xu, Yong-bin Yang, T. Jiang   +5 more
semanticscholar   +1 more source

Separation of Polyamide 66 From Blends With Wool Through Selective Dissolution: Implications of the Presence of Dyes

Journal of Applied Polymer Science, EarlyView.
The study assesses dye impacts on PA66/wool recycling via selective PA66 dissolution in calcium chloride–ethanol–water and water reprecipitation. Acid dyes migrate into solvent, yielding color‐free, melt‐spinnable PA66 and reusable wool. Metal‐complex dyes remain, altering PA66 melt viscosity and requiring extraction or repurposing.
Lukas Vonbrül, Doris E. Braun, Barbara M. Paul, Amalid Mahmud‐Ali, Sandra Eberle, Michael Cordin, Thomas Bechtold, Tung Pham, Avinash P. Manian   +8 more
wiley   +1 more source

Alkaline oxidative leaching of gold-bearing arsenopyrite ores [PDF]

"The U.S. Bureau of Mines developed an alkaline oxidative pretreatment leaching procedure to increase the recovery of gold from arsenopyrite (feass) ores.

core  

Natrium Cyanide Replacement with Environmentally Friendly Polymerized Cyanide GOLDIX for Leaching of Gold Ore from Sumbawa Indonesia [PDF]

E3S Web of Conferences
Indonesia possesses abundant mineral resources, particularly gold ore. Leaching with sodium cyanide (NaCN) is commonly employed to extract gold in a cost-effective manner.
Reno Faturachman, Aulia Rachman Hakeem, Dian Pahlevi Niko   +2 more
doaj   +1 more source

Evaluation of the Efficiency of a Biobased Reactive Plasticizer on the Morphology and Properties of Sustainable Flexible Films Based on Poly(Lactic Acid) (PLA) Produced by Blown Film Extrusion

Journal of Applied Polymer Science, EarlyView.
A comparative investigation of two epoxy additives derived from cardanol (NC513 and NC514s) for production of films based on poly (lactic acid) (PLA), acetyl tributyl citrate (ATBC), and poly (butylene adipate‐co‐terephthalate) (PBAT) clarified their distinct roles, with NC513 mainly acting as a plasticizer, reducing viscosity and enhancing ductility ...
Norma Mallegni, Vito Gigante, Patrizia Cinelli, Andrea Lazzeri   +3 more
wiley   +1 more source

Hypochlorite Leaching Of Gold Ore [PDF]

, 2018
In this research project, the bulk gold ore sample received from Kuala Lipis, Pahang was used. The gold ore was first sieved to determine the particle size distribution of the gold ore sample.
Mohamad Zaidi, Mohamad Za'im
core  

Magnetic lipase B from Candida antarctica (CALB) biocatalyst for integrated valorization of tilapia by‐products and biodiesel biorefining

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract The immobilization of lipase B from Candida antarctica (CALB) on an amino‐epoxy functionalized magnetic support (Fe3O4‐PEI‐DGEBA) resulted in a highly stable and efficient biocatalyst for biofuel production from tilapia oil. The synthesized support was characterized using scanning electron microscopy, transmission electron microscopy, X‐ray ...
Rafael Leandro Fernandes Melo, Francisco Simão Neto, Bruno Caio Chaves Fernandes, Paulo Gonçalves de Sousa Junior, Patrick da Silva Sousa, Tiago Melo Freire, Raniere Dantas Valença, Frederico Ribeiro do Carmo, Marcos Reinaldo da Silva, Leonardo Farias Serafim, João Maria Soares, Pierre Basílio Almeida Fechine, José Cleiton Sousa dos Santos   +12 more
wiley   +1 more source

A study of the biohydrometallurgical method for extracting gold from flotation tailings

Metalurgija, 2020
This paper shows the results of the comparative study of efficiency of gold extraction methods from technogenic flotation tails by agitation cyanidation and biooxidation followed by leaching.
A. K. Koizhanova, B. K. Kenzhaliyev, D. R. Magomedov, E. M. Kamalov, M. B. Erdenova, N. N. Abdyldaev   +5 more
doaj  

Microwave Pretreatment for Thiourea Leaching for Gold Concentrate

Metals, 2017
In this research, we studied the use of microwave pretreatment to enhance the efficiency of Au leaching from gold concentrate. The gold concentrate was pretreated using microwaves with different irradiation time.
Nag-Choul Choi, Bong-Ju Kim, Kanghee Cho, Soonjae Lee, Cheon-Young Park   +4 more
doaj   +1 more source