Process and mechanism of preparing metallized blast furnace burden from metallurgical dust and sludge

被引：5

作者：

Gao, Xing ^{[1
,2
]}

Chai, Yifan ^{[1
,2
]}

Wang, Yici ^{[1
]}

Luo, Guoping ^{[1
]}

An, Shengli ^{[1
,2
]}

Peng, Jun ^{[1
,2
]}

机构：

[1] Inner Mongolia Univ Sci & Technol, Sch Met Future Technol, Baotou 014000, Peoples R China

[2] Inner Mongolia Univ Sci & Technol, Key Lab Green Extract & Efficient Utilizat Light R, Minist Educ, Baotou 014010, Peoples R China

来源：

SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期

关键词：

Metallized pellets; Dezincification rate; Metallization rate; Metallurgical dust and sludge; ZINC; IRON; RECOVERY;

D O I：

10.1038/s41598-024-60425-8

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Metallurgical dust and sludge are solid waste resources with recycling value. In recent years, rotary hearth furnace has become the most important means to treat metallurgical dust and sludge because of its wide range of raw materials and strong treatment capacity. In this study blast furnace ash and converter sludge were selected as the research objects, and high-quality metallized pellets were prepared based on the rotary hearth furnace process. The strength changed of pellets, the reduction process of iron oxides and the removal process of zinc during the roasting of pellets in rotary hearth furnace were studied. To explore the reasonable roasting condition for preparing metallized pellets in rotary hearth furnace. The optimum roasting temperature of the pellets was 1250degree celsius and the roasting time was 25 min. The compressive strength, metallization rate and dezincification rate of metallized pellets reached 1361N, 97.44% and 95.67%, respectively. The efficient resource utilization of various metallurgical dust and sludge is realized.

引用

页数：10

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