TY - JOUR
T1 - Producing cement clinker assemblages in the system: CaO-SiO2-Al2O3-SO3-CaCl2-MgO
AU - Simoni, Marco
AU - Hanein, Theodore
AU - Duvallet, Tristana Y.
AU - Jewell, Robert B.
AU - Provis, John L.
AU - Kinoshita, Hajime
PY - 2021/6/1
Y1 - 2021/6/1
N2 - The cement industry is carbon-intensive, and the valorisation of industrial side-streams/residuals for use as alternative raw materials can enable the cement industry to reduce its carbon footprint as well as promote resource efficiency. Apart from key clinker ingredients such as CaO, Al2O3, and SiO2, industrial residues can also contain MgO, CaCl2, and SO3. Therefore, this study investigates the formation of cement clinker assemblages in the system CaO-SiO2-Al2O3-SO3-CaCl2-MgO at temperatures ranging between 1100 and 1300 °C. The production of a clinker composed mainly of alinite and ye'elimite is first attempted; it is found that these phases cannot be simultaneously produced. Ternesite is also not compatible with alinite under the conditions studied. Wadalite is compatible with both ye'elimite and ternesite, while ternesite is also compatible with chlormayenite at 1150 °C. Additionally, the low-temperature formation of alite was also observed with the presence of CaCl2 in the raw-material mix.
AB - The cement industry is carbon-intensive, and the valorisation of industrial side-streams/residuals for use as alternative raw materials can enable the cement industry to reduce its carbon footprint as well as promote resource efficiency. Apart from key clinker ingredients such as CaO, Al2O3, and SiO2, industrial residues can also contain MgO, CaCl2, and SO3. Therefore, this study investigates the formation of cement clinker assemblages in the system CaO-SiO2-Al2O3-SO3-CaCl2-MgO at temperatures ranging between 1100 and 1300 °C. The production of a clinker composed mainly of alinite and ye'elimite is first attempted; it is found that these phases cannot be simultaneously produced. Ternesite is also not compatible with alinite under the conditions studied. Wadalite is compatible with both ye'elimite and ternesite, while ternesite is also compatible with chlormayenite at 1150 °C. Additionally, the low-temperature formation of alite was also observed with the presence of CaCl2 in the raw-material mix.
KW - Alinite
KW - Calcium chloride
KW - Cement clinker production
KW - Industrial circular economy
KW - Low-CO2
KW - Ternesite
KW - ye'elimite
UR - https://www.mendeley.com/catalogue/9d67813c-7acd-3d2d-a495-64179777829c/
U2 - 10.1016/j.cemconres.2021.106418
DO - 10.1016/j.cemconres.2021.106418
M3 - Article
SN - 0008-8846
VL - 144
JO - Cement and Concrete Research
JF - Cement and Concrete Research
ER -
