Production of high-carbon ferrochrome from dry-quenched semicoke

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• 作者：V. M. Strakhov ; V. S. Medyanik ; L. I. Malinovskaya ; A. A. Tsernikel…
• 关键词：semicoke ; dry quenching ; physicochemical properties ; high ; carbon ferrochrome
• 刊名：Coke and Chemistry
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：59
• 期：7
• 页码：254-259
• 全文大小：269 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Industrial Chemistry and Chemical Engineering
  Russian Library of Science
  
• 出版者：Allerton Press, Inc. distributed exclusively by Springer Science+Business Media LLC
• ISSN：1934-8398
• 卷排序：59

文摘

The quenching of semicoke by saturated steam (heating-gas temperature 550°C) is described. The working-moisture content Wr in the semicoke is 3.0–6.7% for the new quenching method. As a reducing agent, semicoke has good characteristics: relatively low ash content (Ad = 7.1%), low sulfur content (Sd = 0.13%) and phosphorus content (Pd = 0.029%), and high reactivity (\({K_{C{O_2}}}\) = 4.0 cm3/g s) and electrical resistivity (ρ > 1.9 × 106 Ω cm). In tests, dry-quenched semicoke performs well in the production of high-carbon ferrochrome: decreased power consumption; increased furnace productivity; decreased consumption of chromium ore; and decreased sulfur content in the ferrochrome when Karaganda coal is completely reduced by the semicoke. The optimal semicoke content in the batch is up to 50 kg.