高爐原燃料分級布料過程及時序

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基金項目:

中央高校基本科研業務費專項(FRF-TP-12-029A)

國家自然科學基金資助項目(60872147)

Graded charging process and time series of raw materials for blast furnaces

1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. MCC Capital Engineering and Research Incorporation Limited, Beijing 100176, China

摘要: 針對目前高爐原燃料質量惡化導致料柱壓差升高的現狀,尋求通過布料改善料柱透氣性的方法.研究表明:不同粒徑顆粒的混合會減小散料層的空隙度,降低透氣性;減少顆粒混合,可以提高空隙度.為了改善散料層的透氣性,研究了原燃料按顆粒大小分級布料的方式、不同粒級爐料的裝料順序及周期,同時分析了串罐、兩并罐及三并罐無鐘爐頂的布料特點.研究結果對降低高爐料柱壓差及保障高爐穩定順行有重要作用.
- 高爐 /
- 布料 /
- 時序 /
- 壓差 /
- 粒度
Abstract: To counter the condition that quality deterioration of raw materials causes the pressure drop in a blast furnace increasing, new burden charging methods are sought to improve the permeability. Study results show that mixing different size particles can decrease the voidage and thus worsen the permeability, but decreasing the particle mixing can increase the permeability. In order to improve the permeability, the grading patterns, the sequence and period for charging different sizes of raw materials were studied in turn. And also the burden charging characteristics of cascade hoppers, two parallel hoppers, and three parallel hoppers were researched. The study result is very important in decreasing the pressure drop and keeping the BF stability and smooth.
- blast furnaces /
- burden /
- time series /
- pressure drop /
- particle size