Simultaneous extraction of lithium, rubidium, cesium and potassium from lepidolite via roasting with iron(II) sulfate followed by water leaching

2022 ◽  
pp. 105820
Author(s):  
Xiufeng Zhang ◽  
Zhichao Chen ◽  
Sohrab Rohani ◽  
Minyu He ◽  
Xiumin Tan ◽  
...  
Keyword(s):  
Water Leaching ◽  
Simultaneous Extraction

Simultaneous extraction of nickel, copper, and cobalt from low–grade nickel matte by oxidative sulfation roasting-water leaching process

2021 ◽  
Vol 174 ◽  
pp. 107254
Author(s):  
Tengfei Xiao ◽  
Wenning Mu ◽  
Shuangzhi shi ◽  
Haixia Xin ◽  
Xueqing Xu ◽  
...  
Keyword(s):  
Low Grade ◽  
Water Leaching ◽  
Simultaneous Extraction ◽  
Nickel Matte ◽  
Leaching Process ◽  
Nickel Copper ◽  
Sulfation Roasting

Energy-efficient and simultaneous extraction of lithium, rubidium and cesium from lepidolite concentrate via sulfuric acid baking and water leaching

2019 ◽  
Vol 185 ◽  
pp. 244-249 ◽  
Author(s):  
Xiufeng Zhang ◽  
Xiumin Tan ◽  
Chun Li ◽  
Yuejun Yi ◽  
Weizao Liu ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Energy Efficient ◽  
Water Leaching ◽  
Simultaneous Extraction

Effect of water leaching on the adhesion of composite resin to bleached and unbleached bovine enamel

1991 ◽  
Vol 17 (4) ◽  
pp. 156-160 ◽  
Author(s):  
C.D. Torneck ◽  
K.C. Titley ◽  
D.C. Smith ◽  
A. Adibfar
Keyword(s):  
Composite Resin ◽  
Water Leaching ◽  
Effect Of Water ◽  
Bovine Enamel

scholarly journals Effect of Water Leaching on Photodegraded Scots Pine and Spruce Timbers Monitored by FTIR Spectroscopy

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 833
Author(s):  
Edina Preklet ◽  
László Tolvaj ◽  
Eszter Visi-Rajczi ◽  
Tamás Hofmann
Keyword(s):  
Ftir Spectroscopy ◽  
Scots Pine ◽  
Uv Irradiation ◽  
Chemical Elements ◽  
Uv Light ◽  
Carbonyl Groups ◽  
Water Leaching ◽  
Absorption Bands ◽  
Chemical Changes ◽  
Absorption Increase

The goal of this research was the systematic study and comparison of the divided individual effects of UV light irradiation and water leaching during artificial weathering. Spruce (Picea abies Karst.) and Scots pine (Pinus sylvestris L.) samples were irradiated by ultraviolet (UV) light. Another sequence of samples was treated with the combination of UV irradiation and water leaching. The total extent of UV treatment was 20 days for both series of samples. Time relation of UV irradiation and water leaching was 2:1. The chemical changes were observed by FTIR spectroscopy. The difference spectrum was used for determination of the chemical changes. Degradation of lignin was greater for the leached samples than for the pure UV treated samples. Scots pine suffered greater lignin degradation than spruce, and produced higher absorption increase on the absorption region of unconjugated carbonyls. The unconjugated carbonyl groups were the most responsive chemical elements to leaching. Spruce was more susceptible to leaching of unconjugated carbonyl groups than Scots pine. Two absorption bands of unconjugated carbonyl groups at 1706 and 1764 cm−1 wavenumbers were produced by photodegradation. The absorption band at 1764 cm−1 was more sensitive to water leaching than the band at 1706 cm−1.

scholarly journals Recovery of Zinc and Silver from Zinc Acid-Leaching Residues with Reduction of Their Environmental Impact Using a Novel Water Leaching-Flotation Process

Minerals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 586
Author(s):  
Yunpeng Du ◽  
Xiong Tong ◽  
Xian Xie ◽  
Wenjie Zhang ◽  
Hanxu Yang ◽  
...  
Keyword(s):  
Hazardous Waste ◽  
Acid Leaching ◽  
Copper Recovery ◽  
Water Leaching ◽  
Flotation Process ◽  
Metal Levels ◽  
Valuable Metals ◽  
Leaching Experiments ◽  
Zinc Hydrometallurgy ◽  
Poor Stability

Zinc-leaching residue (ZLR) is a strongly acidic hazardous waste; it has poor stability, high heavy metal levels, and releases toxic elements into the environment. ZLR has potential as a valuable resource, because it contains elevated levels of zinc and silver. In this paper, the recovery of zinc (Zn) and silver (Ag) from ZLR wastes from zinc hydrometallurgy workshops using water leaching followed by flotation was studied. During water leaching experiments, the zinc and copper recovery rates were 38% and 61%, respectively. Thereafter, various flotation testing parameters were optimized and included grinding time, reagent dosages, pulp density, flotation time, and type of adjuster. Experimental results demonstrated this flotation method successfully recycled Ag and Zn. A froth product containing more than 9256.41 g/t Ag and 12.26% Zn was produced from the ZLR with approximately 80.32% Ag and 42.88% Zn recoveries. The toxicity characteristic leaching procedure (TCLP) results indicated the water-leaching flotation process not only recycled valuable metals such as zinc and silver in zinc-containing hazardous wastes but lowered the hazardous waste levels to those of general wastes and recycled wastes in an efficient, economical, and environmentally friendly way.

Simultaneous extraction and reduction of gold using sodium tetraphenylborate in polymeric inclusion membranes

2021 ◽  
pp. 119334
Author(s):  
Germán Cuervo-Ochoa ◽  
Luis Fernando Campo-Cobo ◽  
Tania Milena Gutiérrez-Valencia
Keyword(s):  
Sodium Tetraphenylborate ◽  
Simultaneous Extraction
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