Yu. V. Zablotskaya, K. G. Anisonyan, G. B. Sadykhov, D. Yu. Kop’ev, I. S. Litvinova
{"title":"Kinetic Laws of the Hydrochloric Acid Leaching of the Slime from Quartz–Leucoxene Sandstones","authors":"Yu. V. Zablotskaya, K. G. Anisonyan, G. B. Sadykhov, D. Yu. Kop’ev, I. S. Litvinova","doi":"10.1134/S0036029523110137","DOIUrl":null,"url":null,"abstract":"<p>The kinetics of atmospheric hydrochloric acid leaching of the iron-containing slime formed during quartz–leucoxene sandstone beneficiation is studied. The calculated activation energies indicate two temperature ranges of the slime leaching: a diffusion kinetic region at 40–70°C (<i>E</i><sub>a</sub> = 35.79–36.56 kJ/mol) and a kinetic region at 70–80°C (<i>E</i><sub>a</sub> = 48.68 kJ/mol). A steplike character of the development of slime during the leaching of iron-containing minerals from it is revealed, which is caused by the consecutive processes of siderite and hematite decomposition and a change in the process rate as the solution is saturated with iron ions.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":null,"pages":null},"PeriodicalIF":0.4000,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Metallurgy (Metally)","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S0036029523110137","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
The kinetics of atmospheric hydrochloric acid leaching of the iron-containing slime formed during quartz–leucoxene sandstone beneficiation is studied. The calculated activation energies indicate two temperature ranges of the slime leaching: a diffusion kinetic region at 40–70°C (Ea = 35.79–36.56 kJ/mol) and a kinetic region at 70–80°C (Ea = 48.68 kJ/mol). A steplike character of the development of slime during the leaching of iron-containing minerals from it is revealed, which is caused by the consecutive processes of siderite and hematite decomposition and a change in the process rate as the solution is saturated with iron ions.
期刊介绍：
Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
