Possibilities for Normalization of the Gasdynamic Mode of Blast Melting with Pulverized Coal Injection

Autor: A. K. Tarakanov, Vitalii Lyalyuk, I. I. Kucher, D. A. Kassim
Rok vydání: 2020
Předmět:
Zdroj: Steel in Translation. 50:467-472
ISSN: 1935-0988
0967-0912
DOI: 10.3103/s0967091220070098
Popis: When a blast furnace with a volume of 5000 m3 was transferred to pulverized coal injection technology, an intense peripheral gas flow, which led to the combustion of shoulder and tuyere coolers, developed. It was not possible to eliminate this phenomenon either by methods of control “from above” or by reducing the diameter of tuyeres. To eliminate the peripheral gas flow, it is advisable on a furnace with a hearth diameter of 14.7 m to maintain the total mechanical energy of the combined blast flow at the tuyere cut at a level not lower than 2100–2600 kJ / s, and the total mechanical energy of the hearth gas flow not lower than 5100–5300 kJ /from. It is also necessary to form a narrow coke “vent” on the top of the blast furnace and to stretch the ore ridge as much as possible.
Databáze: OpenAIRE
Externí odkaz: