CO_2气氛下电石渣配料生料和普通水泥生料在模拟预热器系统中的逆反应过程

The Reverse Reaction of Cement Raw Meal with Dosing of Carbide Slag and Common Cement Raw Meal in the Simulated Preheater System in CO_2 Atmosphere

试验研究了模拟烟气下电石渣配料生料和普通水泥生料在预热器系统中(CO2气氛下)的逆反应过程。结果表明:CO2气氛下,电石渣配料生料先合成CaCO3,再分解成CaO。当电石渣的掺入量达到100%时,对于电石渣配料生料和普通水泥生料,其Ca(OH)2、CaO两者转化为CaCO3的转化率基本一致,并且在700℃的高温区域,CaCO3分解的逆反应才得到完全控制,分解过程得以加速。

The reverse reaction of cement raw meal with dosing of carbide slag and common cement raw meal was studied in the preheater system（in CO2 atmosphere） with simulated gas circumstance.The results show that the CaCO3 was synthesized by cement raw meal with dosing of carbide slag first and then the CaCO3 was decomposed into CaO in CO2 atmosphere.When the content of carbide slag is 100%,the conversion rate of Ca（OH）2 into CaCO3 is almost equal to CaO for cement raw meal with dosing of carbide slag and common cement raw meal.And the reverse reaction of CaCO3 have more or less disappeared in the high-temperature area of 700 ℃,the decomposition process of CaCO3 was accelerated.