Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for synthesizing calcium sulphoaluminate-modified portland cement clinker by employing vapor deposition
The invention relates to a method for synthesizing a calcium sulphoaluminate-modified portland cement clinker by employing vapor deposition. The method comprises the following steps: burning a portland cement clinker in a furnace at a high temperature of 1350-1500 DEG C, and then naturally cooling; carrying out heat preservation in a tube furnace at the heated temperature of 1100-1250 DEG C; carrying out heating and heat preservation on the cement clinker, and simultaneously introducing an SO2 gas or a mixed gas of SO2 and O2; treating the clinker, taking out and naturally cooling the clinker; or burning a portland cement raw material in the furnace at a high temperature of 1350-1500 DEG C, and rapidly cooling the clinker; when the cooling temperature is within the range of 1100-1250 DEG C, introducing the SO2 gas or the mixed gas of SO2 and O2 for 20-60 minutes; and taking the clinker after clinker treatment, and naturally cooling the clinker. According to the method, sintering of the C3S-C2S-C4AF-C3A-C4A3 multi-phase composite nanoscale calcium sulphoaluminate-modified portland cement clinker is achieved; a certain amount of SO2 or other harmful gases can be consumed; and theoretical guiding significance and reference value are provided for emission reduction of cement industry and other industrial exhaust gases containing SO2.
Method for synthesizing calcium sulphoaluminate-modified portland cement clinker by employing vapor deposition
The invention relates to a method for synthesizing a calcium sulphoaluminate-modified portland cement clinker by employing vapor deposition. The method comprises the following steps: burning a portland cement clinker in a furnace at a high temperature of 1350-1500 DEG C, and then naturally cooling; carrying out heat preservation in a tube furnace at the heated temperature of 1100-1250 DEG C; carrying out heating and heat preservation on the cement clinker, and simultaneously introducing an SO2 gas or a mixed gas of SO2 and O2; treating the clinker, taking out and naturally cooling the clinker; or burning a portland cement raw material in the furnace at a high temperature of 1350-1500 DEG C, and rapidly cooling the clinker; when the cooling temperature is within the range of 1100-1250 DEG C, introducing the SO2 gas or the mixed gas of SO2 and O2 for 20-60 minutes; and taking the clinker after clinker treatment, and naturally cooling the clinker. According to the method, sintering of the C3S-C2S-C4AF-C3A-C4A3 multi-phase composite nanoscale calcium sulphoaluminate-modified portland cement clinker is achieved; a certain amount of SO2 or other harmful gases can be consumed; and theoretical guiding significance and reference value are provided for emission reduction of cement industry and other industrial exhaust gases containing SO2.
Method for synthesizing calcium sulphoaluminate-modified portland cement clinker by employing vapor deposition
MA SUHUA (Autor:in) / LI WEIFENG (Autor:in) / GE DASHUN (Autor:in) / SHEN XIAODONG (Autor:in)
20.05.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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