【摘要】 在ｐＨ和温度恒定的条件下，对硅灰石与盐酸反应动力学进行了实验研究。发现其反应动力学规律分为两阶段，初始阶段反应速度只与硅灰石总表面积有关；当反应率（Ｇ）达到一定值时，反应动力学符合固相多元体系的杨德尔速度方程。同时，对产物ＳｉＯ２物理状态和临界反应率（Ｇ）的意义进行讨论更多还原

【Abstract】 Under the conditions of constant pH and temperature,the experimental study on the regular pattern of reaction kinetics between wollastonite and hydrochloric acid is taken place.It found that the regular pattern of reaction kinetics can be devided into two stages:at the beginning of step,the reaction rate only relates with total surface area of wollastonite;and then,when the reaction rate(G)reaches a certain value,the reaction kinetics is in accordance with yangdeer velocity equation in solid phase multi-component system.Meanwhile,the physical state of reaction product SiO 2 and significance of critical reaction rate are also discussed.更多还原