Influence of particle size on the carbonation of stainless steel slag for CO2 storage

被引：135
作者：
Baciocchi, Renato [1 ]
Costa, Giulia [1 ]
Polettini, Alessandra [2 ]
Pomi, Raffaella [2 ]
机构：
[1] Univ Roma Tor Vergata, Dept Civil Engn, Via Politecn 1, I-00133 Rome, Italy
[2] Univ Rome, Dept Hydraul, I-00146 Rome, Italy
来源：
GREENHOUSE GAS CONTROL TECHNOLOGIES 9 | 2009年 / 1卷 / 01期
关键词：
stainless steel slag; particle size; CO2; carbonation; kinetics; mineralogy; leaching; ACCELERATED CARBONATION; SEQUESTRATION; INDUSTRY;
D O I：
10.1016/j.egypro.2009.02.314
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 main aims of this work were to assess the CO2 storage capacity of different particle size fractions of stainless steel slag subjected to accelerated carbonation under mild operating conditions, to study the influence on reaction kinetics of some of the main operating parameters ( temperature, pressure and liquid to solid ratio) and to determine the effects of the process on slag mineralogy and leaching behavior. Maximum CO2 uptakes of 130 g CO2/kg residues were measured for the finest grain size and decreased with particle size owing to differences in reacting species availability and specific surface. Process kinetics proved relatively fast, achieving completion in around 2 hours with a CO2 pressure of 3 bar and an optimal liquid to solid ratio of 0.4; temperature was the parameter that most influenced CO2 uptake, due to its enhancement effect on silicates dissolution. (C) 2008 Elsevier Ltd. All rights reserved
引用
收藏
页码：4859 / 4866
页数：8
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