不同煅烧温度下形成的含氟硫A矿对水泥水化性能的影响

The effect of flour-sulfur contained quarry A formed under different burning temperature on cement hydration

为研究不同煅烧温度下,含氟硫熟料中不同性能、形貌特征的A矿与水泥水化形成钙矾石的关系以及A矿对水泥水化性能的影响,采用工业原料并尽量模拟立窑内煅烧状况,对经1350℃和1425℃温度下煅烧的熟料进行了A矿形貌、A矿水化率及A矿与钙矾石形成关系等系列试验。试验结果表明,在传统的煅烧温度下(1400～1425℃)烧成的熟料,其A矿的固溶程度及A矿含量均比低温(1350℃)烧成的高;掺氟硫复合矿化剂烧制的熟料的A矿具有较高的水化速度,熟料强度较高,其制成的水泥在水化时,液相成分受高固溶程度A矿的水化所控制,所形成的钙矾石较低温煅烧的稳定,且A矿水化产物的形成与钙矾石(AFt)的形成较协调,水泥石机械强度更高。

In order to study the relation between quarry A in the flour-sulfur contained clinker with different performance and shape property under different temperatures and the ettringite formed from cement hydrate, and the effect of quarry A on cement hydration performance. The industrial materials are used and the burning condition in the vertical kiln is simulated as possible, the clinker under 1350℃ and 1425℃ are serially tested on the shape and hydration of quarry A and the relation of quarry A and etringite, The results have shown that the clinker burning Under the traditional temperature （ 1 400 - 1 425 ℃ ）, its quarry A solid and dissolve degree as well as quarry content are higher than that of clinker under lower temperature （ 1 350 ℃ ） ; that the clinker burning with addition of flour-sulfur compound mineralizing agent, its quarry A is of rather fast hydrating speed and high intensity clinker with which the produced cement during hydrating, its liquid phase component is managed by high solid and dissolve degree of quarry A and the formed etringite is stable than that under the lower burning temperature, and the formation of both quarry A hydrating result and etringite （ AFt ） rather corresponds, the concrete is more stronger in mechanism.