Journal
CHEMICAL ENGINEERING & TECHNOLOGY
Volume 41, Issue 8, Pages 1577-1586Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.201800025
Keywords
Carbide slag; CO2 capture; Hydration; Portland cement-based carbide slag; Thermal pretreatment
Categories
Funding
- Guangdong Province Science and Technology Planning Project of China [2017A010104020]
- National Natural Science Foundation of China [51606087, 21576219]
- Start-Up Foundation of Jiangsu University [15JDG157]
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Carbide slag (CS) is a CaO-based waste with superior CO2 capture capacity. As it is usually recycled in the form of fine powder, the pelletization of CS is indispensable for its practical application. Here, commercial Portland cement (PC) was used as a cheap binder to produce PC-based carbide slag (PCCS) pellets and to enhance the mechanical strength of CS. The carbonation conversion of CS declined with the addition of PC, but the ability to resist sintering was improved. Prolonging the hydration time (HT) was effective in improving the CO2 capture performance of PCCS. During the thermal pretreatment of CS, the grain size of the CS increased with increasing thermal pretreatment temperature and time, but the mechanical strength of the CS increased.
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