Phase evolution, characterisation, and performance of cement prepared in an oxy-fuel atmosphere.
Phase evolution, characterisation, and performance of cement prepared in an oxy-fuel atmosphere.
复制标题
在氧燃料气氛中制备的水泥的相演化、表征和性能。
DOI：
10.1039/c6fd00032k
复制
发表时间：
2016
影响因子：
3.4
通讯作者：
Zheng L
中科院分区：
文献类型：
--
作者：
Zheng L
水泥生产是全球人为二氧化碳排放的主要贡献者之一（7-10%）。碳捕获与封存（CCS）已被确定为该行业脱碳的关键技术。纯氧燃料燃烧是指在循环二氧化碳和纯O2的混合物中燃烧燃料，而不是在空气中燃烧燃料，这使得二氧化碳的捕获更加容易。由于它结合了理论上较低的能源消耗和产量的增加，因此作为一种CCS技术在水泥厂很有吸引力。然而，有必要证明熟料气氛的变化不会降低所生产熟料的质量。在纯氧燃料气氛中，仅使用纯氧化物作为原料以及氧化物和粘土的混合物，就成功地生产了熟料。然后，在熟料中加入5 wt%的石膏制备CEM I水泥。采用定量XRD和XRF测定了熟料的物相和元素组成。对水泥在3、7、14和28日龄时的粒径分布和抗压强度进行了测试，探讨了粒径分布对水泥抗压强度的影响。此外，还将在全氧燃料气氛中生产的水泥的抗压强度与在空气和市售CEMEX CEM I中生产的水泥进行了比较。结果表明，在全氧燃料气氛中可以成功生产出高质量的水泥，其物相和化学成分与CEM I相似。此外，它的抗压强度与在空气和市售CEMEX CEM I中生产的水泥相当。
Cement manufacture is one of the major contributors (7–10%) to global anthropogenic CO2 emissions. Carbon capture and storage (CCS) has been identified as a vital technology for decarbonising the sector. Oxy-fuel combustion, involving burning fuel in a mixture of recycled CO2 and pure O2 instead of air, makes CO2 capture much easier. Since it combines a theoretically lower energy penalty with an increase in production, it is attractive as a CCS technology in cement plants. However, it is necessary to demonstrate that changes in the clinkering atmosphere do not reduce the quality of the clinker produced. Clinkers were successfully produced in an oxy-fuel atmosphere using only pure oxides as raw materials as well as a mixture of oxides and clay. Then, CEM I cements were prepared by the addition of 5 wt% gypsum to the clinkers. Quantitative XRD and XRF were used to obtain the phase and elemental compositions of the clinkers. The particle size distribution and compressive strength of the cements at 3, 7, 14, and 28 days' ages were tested, and the effect of the particle size distribution on the compressive strength was investigated. Additionally, the compressive strength of the cements produced in oxy-fuel atmospheres was compared with those of the cement produced in air and commercially available CEMEX CEM I. The results show that good-quality cement can be successfully produced in an oxy-fuel atmosphere and it has similar phase and chemical compositions to CEM I. Additionally, it has a comparable compressive strength to the cement produced in air and to commercially available CEMEX CEM I.
影响因子：
2
作者：
Bodil Hökfors;E. Viggh;M. Eriksson
通讯作者：
M. Eriksson
影响因子：
15
作者：
J. Johnston
通讯作者：
J. Johnston
DOI：
--
发表时间：
2014
期刊：
--
影响因子：
--
作者：
O. Edenhofer;Ramón Pichs-Madruga;Y. Sokona;J. Minx
通讯作者：
O. Edenhofer;Ramón Pichs-Madruga;Y. Sokona;J. Minx