Wet versus slurry carbonation of EAF steel slag

被引：32

作者：

Baciocchi, R.

Costa, G. ^{[1
]}

Di Bartolomeo, E. ^{[2
]}

Polettini, A. ^{[3
]}

Pomi, R. ^{[3
]}

机构：

[1] Univ Roma Tor Vergata, Dept Civil Engn, Rome, Italy

[2] Univ Roma Tor Vergata, Dept Chem Sci & Technol, Rome, Italy

[3] Univ Roma La Sapienza, Dept Civil & Environm Engn, I-00184 Rome, Italy

来源：

GREENHOUSE GASES-SCIENCE AND TECHNOLOGY | 2011年 / 1卷 / 04期

关键词：

carbonation; CO2; uptake; EAF steel slag; leaching; mineralogy; CO2; SEQUESTRATION; ACCELERATED CARBONATION; DIOXIDE;

D O I：

10.1002/ghg.38

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The CO2 uptake and Ca-to-carbonate conversion yield attained by wet and slurry-phase carbonation of stainless steel slag are reported. A maximum CO2 uptake of 180 g CO2/kg slag was achieved under wet conditions (50 degrees C, 3 bar CO2, 0.4 l/kg), corresponding to a Ca-to-carbonate conversion yield of 50%. The slurry-phase process, even when adopting more energy-intensive operating conditions, did not improve the CO2 uptake kinetics and conversion yield in comparison to the wet treatment. The mineralogy of the carbonated slag exhibited a decreased content of silicate phases (Ca2SiO4 in particular), a marked reduction of Ca and Mg oxides, and a noteworthy increase of calcite. (C) 2011 Society of Chemical Industry and John Wiley & Sons, Ltd

引用

页码：312 / 319

页数：8

共 30 条

[1]

[Anonymous], 2010, IT STEEL IND KEY STA

[2]

[Anonymous], OFFICIAL J EUROPEA L

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