Alit-belite-calcium sulphoaluminate cement clinker prepared from high-silicon low-grade limestone and aluminum solid waste and method: Fid-Bau Portal

Alit-belite-calcium sulphoaluminate cement clinker prepared from high-silicon low-grade limestone and aluminum solid waste and method

MA YING / LIU YAO / LI YUWEI / SHEN XIAODONG

Abstract

The invention discloses alite-belite-calcium sulphoaluminate cement clinker prepared from high-silicon low-grade limestone and aluminum solid waste and a method, and the mineral phase of the clinker comprises the following components in percentage by mass: 30-50% of C3S, 30-50% of C2S, 10-30% of C4A3, 0-5% of C4AF, 0-5% of CaSO4 and metal ion oxide. 20-50% of high-silicon low-grade limestone is used for partially replacing a calcium raw material and completely replacing a siliceous raw material; the aluminum solid waste completely replaces an aluminum raw material and an iron raw material. The alite-belite-calcium sulphoaluminate cement clinker prepared by the method is high in utilization rate of the low-grade limestone and the aluminum solid waste, does not need to improve a traditional Portland cement clinker production process, and is good in burnability, low in sintering temperature, high in hardening speed, high in early strength and stable in later strength development compared with the latter. The problem of utilization of low-grade limestone and aluminum solid waste is effectively solved, the cement clinker production cost is reduced, and carbon emission in the cement production process is reduced.

本发明公开了一种高硅低品位石灰石和铝质固废制备的阿利特‑贝利特‑硫铝酸钙水泥熟料及方法，熟料中矿相组成以质量百分数计，包括C3S：30~50%，C2S：30~50%，C4A3$：10~30%，C4AF：0~5%，CaSO4：0~5%，以及金属离子氧化物。以20~50%的高硅低品位石灰石部分替代钙质原料，完全取代硅质原料；铝质固废完全替代铝质原料和铁质原料。该方法制备的阿利特‑贝利特‑硫铝酸钙水泥熟料，低品位石灰石和铝质固废利用率高，不需要改进传统硅酸盐水泥熟料生产工艺，相较后者，易烧性好、烧结温度低、硬化速度快、早期强度高，且后期强度稳定发展，有效解决低品位石灰石和铝质固废的利用问题，降低了水泥熟料生产成本并减少水泥生产过程中的碳排放。

Zugriff

Download

Seitennavigation

Dokumentinformationen

Ähnliche Titel

Exportieren, teilen und zitieren