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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......
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......
temperature 150 ℃, oxygen partial pressure 1 MPa, additive amount 1%, solid-to-liquid ratio 1:4, leaching time 2 h, initial sulfuric acid concentration 15%, and particle size... by hydrometallurgical process. These processes involve a roasting step, which evolves toxic SO2 gas and requires a sulfuric acid plant to be set up in the smelter. Direct pressure leaching has several problems......
PREPARATION AND CORROSION RESISTANCE OF NiP/TiO2 COMPOSITE FILM ON CARBON STEEL IN SULFURIC ACID SOLUTION S.Z. Song1,J. Zhao2,L.Z. Song2 (1.School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;2.School of Environment & Chemical Engineering, Yanshan University, Qinhuangdao 066004,China) Abstract:A NiP/TiO2 composite film on carbon steel was prepared......
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......
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......
leaching experiments) was used. Sample (200 g) was mixed with a measured amount of distilled water and calculated amounts of sulfuric acid (AR). The slurry was added to the autoclave and then was heated... to be 180 ℃. Fig.2 Effect of temperature on the leach recovery of vanadium at 3 h, 25% addition of H2SO4, 1.2 mL/g L/S and 85% particle size of 0.074 mm 3.3 Effect of addition of sulfuric acid......
Benevolent behavior of Kleinia grandiflora leaf extract as a green corrosion inhibitor for mild steel in sulfuric acid solutionMuthukrishnan Pitchaipillai1,Karthik Raj2,Prakash Periakaruppan21...) of-18.62 k J/mol. The obtained results indicate that the Kleinia grandiflora leaf extract can serve as an effective inhibitor for the corrosion of mild steel in a sulfuric acid medium.关键词:......
+ in sulfuric acid leached liquor from waste Mn-Zn ferrite powders and the theoretical prescription of Mn-Zn ferrite, the sulfuric leached liquors’ proportion reduction processes, in which special proportion.... The mass concentration of Fe3+ is below 0.1 g/L and its reduction rate is above 99.8%. Key words: waste Mn-Zn ferrite powders; sulfuric acid leached liquor; reduction 锰锌铁氧体是现代电子工业及信息产业的基础功能材料,随着通讯,计算机......
) Pyrite is oxidized with water and oxygen,generating ferrous sulfate and sulfuric acid. 2FeS2+7O2+2H2O→2FeSO4+2H2SO4 (1) 2) Ferrous sulfate continues...+6Fe2(SO4)3+8H2O→12FeSO4+8H2SO4 (4) 4) Part of ferri sulfate is hydrolyzed to alkaline ferric sulfate. Fe2(SO4)3+2H2O→2Fe(OH) SO4+H2SO4 (5) The sulfuric acid......
