In the paper, the effects of powder particle shapes on the kinetics of solid reaction (K. S. R) and errors caused by the current methods based on spherical particle models have been studied. It has been found that par...In the paper, the effects of powder particle shapes on the kinetics of solid reaction (K. S. R) and errors caused by the current methods based on spherical particle models have been studied. It has been found that particle shaeps have significant effects on kinetics of the solid reaction (K. S. R). However it has now not been involved in the present kinetic equations as a factor. The ball models used by the present kinetic equation have led to great errors not only in determination of the reaction constants but also in judgement of reaction types. This is a problem that has not been much recognized and needs to be solved immediatly.展开更多
The phases variation law of kaolinite-CaO-mineralizer (CaCl2,CaF2. CaSO4) system in the course of hydrothermal pretreating and calcining of pretreated products is investigated. Also,the gelatinization capacity and com...The phases variation law of kaolinite-CaO-mineralizer (CaCl2,CaF2. CaSO4) system in the course of hydrothermal pretreating and calcining of pretreated products is investigated. Also,the gelatinization capacity and composition of calcined products and the relationship between the kind of mineralizer and the temperature of calcining are studied. It is concluded that both adjusting a suitable chemical composition and opting for composite rnineralizer can effectively inhibit the formation of inactive mineral C,AS improve the gelatinization capacity of calcined products.展开更多
文摘In the paper, the effects of powder particle shapes on the kinetics of solid reaction (K. S. R) and errors caused by the current methods based on spherical particle models have been studied. It has been found that particle shaeps have significant effects on kinetics of the solid reaction (K. S. R). However it has now not been involved in the present kinetic equations as a factor. The ball models used by the present kinetic equation have led to great errors not only in determination of the reaction constants but also in judgement of reaction types. This is a problem that has not been much recognized and needs to be solved immediatly.
文摘The phases variation law of kaolinite-CaO-mineralizer (CaCl2,CaF2. CaSO4) system in the course of hydrothermal pretreating and calcining of pretreated products is investigated. Also,the gelatinization capacity and composition of calcined products and the relationship between the kind of mineralizer and the temperature of calcining are studied. It is concluded that both adjusting a suitable chemical composition and opting for composite rnineralizer can effectively inhibit the formation of inactive mineral C,AS improve the gelatinization capacity of calcined products.
