SURFACE-AREA AND PORE-SIZE CHANGES DURING SINTERING OF CALCIUM-OXIDE PARTICLES

被引：54

作者：

FUERTES, AB ^{[1
]}

ALVAREZ, D ^{[1
]}

RUBIERA, F ^{[1
]}

PIS, JJ ^{[1
]}

MARBAN, G ^{[1
]}

PALACIOS, JM ^{[1
]}

机构：

[1] CSIC,INST QUIM FIS ROCASOLANO,MADRID 6,SPAIN

来源：

CHEMICAL ENGINEERING COMMUNICATIONS | 1991年 / 109卷

关键词：

SURFACE AREA; PORE SIZE; SINTERING; CALCIUM OXIDE;

D O I：

10.1080/00986449108910974

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Changes in surface area and pore size during the sintering of CaO samples between 0.71 to 1 mm, were studied. Typical operating conditions in fluidized bed combustors (temperature between 973 and 1173 K and C02concentrations up to 15%) were chosen. The longest sintering time was 90 min. The decrease in the surface area with sintering time was described using an empirical equation deduced from the German-Munir model. Surface area reduction and increase in pore size was strongly affected by the presence of C02. Shrinkage of the CaO particles was not observed during sintering. The pore volume and porosity remain unaffected by sintering. A qualitative model, based on SEM microphotographs, for describing the sintering process was proposed. © 1991, Gordon and Breach Science Publishers S.A.

引用

页码：73 / 88

页数：16

共 18 条

[1] EFFECTS OF WATER VAPOUR ON SINTERING OF MGO [J].