Environment-friendly medium-alkali Portland cement clinker and production process thereof: Fid-Bau Portal

Environment-friendly medium-alkali Portland cement clinker and production process thereof

MA SHIWEI / CHEN QIZHI / JI YINGMING / QI BAODE / SUN XIANGYANG

The invention discloses an environment-friendly medium-alkali Portland cement clinker, which is prepared by calcining a raw material, wherein the raw material comprises the following components in percentage by mass: 80-87% of medium-alkali limestone, 5.0-6.0% of coal gangue, 4.5-5.5% of iron ore dressing sludge, 3.5-4.5% of wet fly ash and 1.7-2.3% of silicon ore dressing sludge. The invention also discloses a production process of the environment-friendly medium-alkali Portland cement clinker. The invention relates to the technical field of cement production, and particularly provides an environment-friendly medium-alkali silicate cement clinker which is smooth in production process, stable in quality and small in native resource consumption, and a production process of the environment-friendly medium-alkali silicate cement clinker, wherein the medium-alkali Portland cement clinker is prepared from iron ore dressing sludge and silicon ore dressing sludge so as to reduce the consumption of raw iron ore and raw silicon ore, wet fly ash and coal gangue are used for completely replacing clay for batching so as to reduce the consumption of raw resources, and the method has important significance for saving resources and protecting the environment, and is remarkable in social and economic benefits.

本发明公开了一种绿色环保中碱硅酸盐水泥熟料，由生料煅烧制成，所述生料包括下列质量比例的组分：中碱石灰石80～87％、煤矸石5.0～6.0％、选铁矿污泥4.5～5.5％、湿粉煤灰3.5～4.5％和选硅矿污泥1.7～2.3％，并公开了其生产工艺。本发明涉及水泥生产技术领域，具体提供了一种生产过程顺畅、质量稳定且对原生资源消耗量小的绿色环保中碱硅酸盐水泥熟料及其生产工艺，该中碱硅酸盐水泥熟料采用选铁矿污泥和选硅矿污泥配料，减少了原生铁矿石和原硅矿石的消耗，通过利用湿粉煤灰和煤矸石全部代替粘土进行配料，减少了原生资源消耗，对节约资源和保护环境具有重要意义，社会和经济效益显著。

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