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Reductive leaching of manganese from low-grade pyrolusite ore in sulfuric acid using pyrolysis-pretreated sawdust as a reductantYa-li Feng1,Shi-yuan Zhang1,2,Hao-ran Li21. School of Civil...="ChDivSummary" name="ChDivSummary">Manganese(Mn) leaching and recovery from low-grade pyrolusite ore were studied using sulfuric acid(H2SO4) as a leachant and pyrolysis-pretreated sawdust as a reductant......
Effect of hydrolysis conditions on hydrous TiO2 polymorphs precipitated from a titanyl sulfate and sulfuric acid solutionHao Song, Bin Liang, Li Lü, Pan Wu, and Chun Li Department of Metallurgical... sulfate and sulfuric acid solution was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron micros-copy (HRTEM). The results revealed......
University, Shanghai 200092, China) Abstract: In order to explore the effect of coarse and fine aggregate chemical composition on the concrete sulfuric acid corrosion resistance, accelerated corrosion... to sulfuric acid. The pH was kept around 0.95 by adding concentrated sulfuric acid everyday. The dimensions of the concrete cylinders were 100 mm in diameter and 200 mm in length. Five evaluation indexes......
-min, SHEN Zhi-ya. Determination of the solubility of ferrous oxalate in diluted sulfuric acid solutions[J]. Chemical World, 1965, 12: 552-553. [23] PINCHING G D, BATES R G. Second dissociation constant... in waste sulfuric acid solutions from stainless steel washing processes ZHANG Jian1, 2, ZHU Zhao-wu1, 2, WANG Li-na1, 2, YI Ai-fei1, 2, QI Tao1, 2 (1. National Engineering Laboratory for Hydrometallurgical......
Adsorption of Re(Ⅶ) by coated solvent-impregnated resins containing Alamine 304-1 from sulfuric acid solutionsXue-Yi Guo1,2,Zhong-Chen Ma1,2,Gao-Wei Liu1,2,Dong Li1,2,Qing-Hua Tian1,21. School...">The recovery of rhenium from waste acid is an urgent issue due to low rhenium concentration and high sulfuric acidity.To solve the problem,novel coated solvent-impregnated resins consisting of inert resins......
residue were determined. Fluoride-sulfuric acid and fluoride-nitric acid schemes were proposed for PMC leaching by an extractive separation of tantalum form niobium, lead and impurities, and production... to be decomposed with 30%-70% hydrofluoric acid and its mixture with sulfuric acid [14, 15]. However, recovery of tantalum and niobium into the solution was relatively low (66%-81%) and achieves......
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Effect of Alloying Tin on the Corrosion Characteristics of Austenitic Stainless Steel in Sulfuric Acid and Sodium Chloride SolutionsMin Sun1,Ming Luo2,Chao Lu2,Tian-Wei Liu3,Yan-Ping Wu3,Lai-Zhu...="ChDivSummary" name="ChDivSummary">The effect of tin on general and pitting corrosion behaviors of the austenitic stainless steel in sulfuric acid and sodium chloride solutions was investigated......
526020, China) Abstract: Using waste Mn-Zn magnetic core powders as the raw material, the leaching conditions of sulfuric acid were studied and the leaching kinetics mechanism was also analyzed... conditions are as follows: The content of sulfuric acid is 1.15 times of its theoretical content, reaction temperature is 95-100 ℃ and leaching time is 4.5 h. Under above optimal conditions, four times......
Electrochemical behavior and corrosion resistance of IrO2–ZrO2 binary oxide coatings for promoting oxygen evolution in sulfuric acid solutionBao Liu1,Shuo Wang1,Cheng-yan Wang1,2,Bao-zhong Ma1,2,Yong... electrode, with its large active surface area, improved electrocatalytic activity, long service lifetime, and especially, lower cost, is the most effective for promoting oxygen evolution in sulfuric acid......
