{"title":"Kinetics of Reduction by Carbon from Special Coke Used in Electrothermal Silicon Production for the C–Fe–O System","authors":"G. A. Ulyeva","doi":"10.3103/S1068364X24601215","DOIUrl":null,"url":null,"abstract":"<div><p>Kinetic features of the carbon in rexil special coke obtained from long-flame Shubarkol coal and used for electrothermal production of silicon are outlined. For the example of the C–Fe–O system, it is found that, in comparison with other reducing agents (graphite, blast furnace coke), rexil is characterized by high reaction rate and activation energy. Experimental and industrial tests regarding silicon production from ore in electric furnaces indicate that practically all of the charcoal in the batch may be replaced by rexil. For example, when the ratio of rexil and coal (in terms of fixed carbon C<sub>so</sub>) is 80 : 20, the furnace productivity is increased, the degree of silicon extraction (91%) is increased, and the mean silicon content (97.8%) is increased.</p></div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 12","pages":"735 - 741"},"PeriodicalIF":0.4000,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Coke and Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.3103/S1068364X24601215","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Kinetic features of the carbon in rexil special coke obtained from long-flame Shubarkol coal and used for electrothermal production of silicon are outlined. For the example of the C–Fe–O system, it is found that, in comparison with other reducing agents (graphite, blast furnace coke), rexil is characterized by high reaction rate and activation energy. Experimental and industrial tests regarding silicon production from ore in electric furnaces indicate that practically all of the charcoal in the batch may be replaced by rexil. For example, when the ratio of rexil and coal (in terms of fixed carbon Cso) is 80 : 20, the furnace productivity is increased, the degree of silicon extraction (91%) is increased, and the mean silicon content (97.8%) is increased.
期刊介绍：
The journal publishes scientific developments and applications in the field of coal beneficiation and preparation for coking, coking processes, design of coking ovens and equipment, by-product recovery, automation of technological processes, ecology and economics. It also presents indispensable information on the scientific events devoted to thermal rectification, use of smokeless coal as an energy source, and manufacture of different liquid and solid chemical products.
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