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Resource-saving low-carbon cement clinker and preparation method thereof
The invention discloses a resource-saving low-carbon cement clinker and a preparation method thereof, and belongs to the technical field of Portland cement clinker production. The cement clinker comprises the following raw materials in percentage by mass: 45-70% of high-calcium low-magnesium limestone, 10-40% of barren rock, 4-12% of shale or sandstone, 4-12% of slag, 1-3% of sulfate slag or iron slag, 1-3% of fly ash, 0-3% of coal cinder or coal gangue, 0.5-3% of phosphorus slag and phosphogypsum and 0.1-0.3% of an added activating agent. According to the resource-saving low-carbon cement clinker and the preparation method thereof of the invention, a large amount of solid waste is utilized, the adopted industrial waste residue is formed by high-temperature calcination, carbonate hardly exists, and CO2 hardly occurs after high-temperature calcination is performed again; the mixing amount of the industrial waste residues is high, the use amount of limestone is greatly reduced; the mineralization of trace elements in the industrial waste residues is utilized, and the activating agent is added, so that the burnability of the raw materials is improved, the sintering stability of the clinker is reduced, and the performance of the clinker is improved; the firing temperature of the low-carbon cement clinker is reduced by 100-150 DEG C compared with the firing temperature 1450 DEG C of traditional Portland cement clinker, and therefore, the coal consumption is obviously reduced, and the emission of CO2 is reduced.
本发明公开了一种资源节约型低碳水泥熟料及其制备方法，属于硅酸盐水泥熟料生产技术领域，所述水泥熟料以质量百分比计包括以下原料：高钙低镁石灰石45～70％、废石10～40％、页岩或砂岩4～12％、炉渣4％～12％、硫酸渣或铁质渣1～3％、粉煤灰1～3％、煤渣或煤矸石0～3％、磷渣和磷石膏0.5～3％，添加活化剂0.1～0.3％。本发明大量利用了固体废弃物，采用的工业废渣中由于经过高温煅烧形成，几乎不存在碳酸盐，再次经过高温煅烧几乎不产生CO2；而且上述工业废渣的掺量高，大大降低石灰石用量，利用工业废渣中微量元素的矿化作用，再添加一种活化剂，有利于改进生料易烧性，降低熟料烧成稳定，改善熟料性能，该低碳水泥熟料的烧成温度比传统硅酸盐水泥熟料的烧成温度1450℃降低100～150℃，煤耗明显降低，减少了CO2的排放量。
Resource-saving low-carbon cement clinker and preparation method thereof
The invention discloses a resource-saving low-carbon cement clinker and a preparation method thereof, and belongs to the technical field of Portland cement clinker production. The cement clinker comprises the following raw materials in percentage by mass: 45-70% of high-calcium low-magnesium limestone, 10-40% of barren rock, 4-12% of shale or sandstone, 4-12% of slag, 1-3% of sulfate slag or iron slag, 1-3% of fly ash, 0-3% of coal cinder or coal gangue, 0.5-3% of phosphorus slag and phosphogypsum and 0.1-0.3% of an added activating agent. According to the resource-saving low-carbon cement clinker and the preparation method thereof of the invention, a large amount of solid waste is utilized, the adopted industrial waste residue is formed by high-temperature calcination, carbonate hardly exists, and CO2 hardly occurs after high-temperature calcination is performed again; the mixing amount of the industrial waste residues is high, the use amount of limestone is greatly reduced; the mineralization of trace elements in the industrial waste residues is utilized, and the activating agent is added, so that the burnability of the raw materials is improved, the sintering stability of the clinker is reduced, and the performance of the clinker is improved; the firing temperature of the low-carbon cement clinker is reduced by 100-150 DEG C compared with the firing temperature 1450 DEG C of traditional Portland cement clinker, and therefore, the coal consumption is obviously reduced, and the emission of CO2 is reduced.
本发明公开了一种资源节约型低碳水泥熟料及其制备方法，属于硅酸盐水泥熟料生产技术领域，所述水泥熟料以质量百分比计包括以下原料：高钙低镁石灰石45～70％、废石10～40％、页岩或砂岩4～12％、炉渣4％～12％、硫酸渣或铁质渣1～3％、粉煤灰1～3％、煤渣或煤矸石0～3％、磷渣和磷石膏0.5～3％，添加活化剂0.1～0.3％。本发明大量利用了固体废弃物，采用的工业废渣中由于经过高温煅烧形成，几乎不存在碳酸盐，再次经过高温煅烧几乎不产生CO2；而且上述工业废渣的掺量高，大大降低石灰石用量，利用工业废渣中微量元素的矿化作用，再添加一种活化剂，有利于改进生料易烧性，降低熟料烧成稳定，改善熟料性能，该低碳水泥熟料的烧成温度比传统硅酸盐水泥熟料的烧成温度1450℃降低100～150℃，煤耗明显降低，减少了CO2的排放量。
Resource-saving low-carbon cement clinker and preparation method thereof
一种资源节约型低碳水泥熟料及其制备方法
HU LONGMING (author) / LUO JIXIANG (author) / KE YUKAI (author) / CHENG RUIZHONG (author)
2021-09-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Energy-saving cement clinker and preparation method thereof
| European Patent Office | 2024
Low-carbon cement clinker and preparation method thereof
| European Patent Office | 2024