A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Portland cement clinker and preparation method thereof
The invention relates to the field of environmental protection and comprehensive utilization of industrial waste residues, in particular to Portland cement clinker and a preparation method thereof. The method comprises the following steps: (1) mixing water-containing coal gasification slag and calcium carbide wet slag, and drying; (2) mixing the dried mixture obtained in the step (1) with other auxiliary materials, and grinding to obtain a raw material; (3) sequentially homogenizing, preheating, decomposing and calcining the raw material obtained in the step (2) to obtain cement clinker; wherein in the step (1), based on the total weight of the water-containing coal gasification slag and the calcium carbide wet slag being 100%, the use amount of the water-containing coal gasification slag is 2-10% by weight; and in the step (2), the fineness of the raw material is 16-20%. The method has the advantages that (1) the characteristic of high residual carbon content of the coal gasification slag is utilized, so that the system temperature can be increased and the system energy consumption can be reduced during combustion; (2) the emission of nitrogen oxides in the calcining process of the cement clinker is reduced; and (3) coal gasification slag solid waste is fully digested, and environmental pollution is reduced.
本发明涉及环境保护和工业废渣综合利用领域，具体涉及一种硅酸盐水泥熟料及其制备方法，该方法包括以下步骤：(1)将含水的煤气化渣和电石湿渣混合后烘干；(2)将步骤(1)所得的烘干混合物，与其他辅料配料后进行粉磨，得到生料；(3)将步骤(2)所得生料依次进行均化、预热、分解和煅烧，得到水泥熟料；其中，在步骤(1)中，以含水的煤气化渣和电石湿渣的总重量为100％计，所述含水的煤气化渣用量为2‑10重量％；在步骤(2)中，所述生料细度为16‑20％。本发明的优点体现在：(1)利用煤气化渣残碳量高的特点，燃烧时可以提高系统温度、降低系统能耗；(2)降低水泥熟料煅烧过程中氮氧化物的排放量；(3)充分消化煤气化渣固体废弃物，降低环境污染。
Portland cement clinker and preparation method thereof
The invention relates to the field of environmental protection and comprehensive utilization of industrial waste residues, in particular to Portland cement clinker and a preparation method thereof. The method comprises the following steps: (1) mixing water-containing coal gasification slag and calcium carbide wet slag, and drying; (2) mixing the dried mixture obtained in the step (1) with other auxiliary materials, and grinding to obtain a raw material; (3) sequentially homogenizing, preheating, decomposing and calcining the raw material obtained in the step (2) to obtain cement clinker; wherein in the step (1), based on the total weight of the water-containing coal gasification slag and the calcium carbide wet slag being 100%, the use amount of the water-containing coal gasification slag is 2-10% by weight; and in the step (2), the fineness of the raw material is 16-20%. The method has the advantages that (1) the characteristic of high residual carbon content of the coal gasification slag is utilized, so that the system temperature can be increased and the system energy consumption can be reduced during combustion; (2) the emission of nitrogen oxides in the calcining process of the cement clinker is reduced; and (3) coal gasification slag solid waste is fully digested, and environmental pollution is reduced.
本发明涉及环境保护和工业废渣综合利用领域，具体涉及一种硅酸盐水泥熟料及其制备方法，该方法包括以下步骤：(1)将含水的煤气化渣和电石湿渣混合后烘干；(2)将步骤(1)所得的烘干混合物，与其他辅料配料后进行粉磨，得到生料；(3)将步骤(2)所得生料依次进行均化、预热、分解和煅烧，得到水泥熟料；其中，在步骤(1)中，以含水的煤气化渣和电石湿渣的总重量为100％计，所述含水的煤气化渣用量为2‑10重量％；在步骤(2)中，所述生料细度为16‑20％。本发明的优点体现在：(1)利用煤气化渣残碳量高的特点，燃烧时可以提高系统温度、降低系统能耗；(2)降低水泥熟料煅烧过程中氮氧化物的排放量；(3)充分消化煤气化渣固体废弃物，降低环境污染。
Portland cement clinker and preparation method thereof
一种硅酸盐水泥熟料及其制备方法
HE LIXIN (author) / YANG YANHUA (author) / WANG YANG (author) / ZHANG XUEDONG (author) / ZHANG DAN (author) / CHEN GUANG (author) / ZHANG LIANG (author) / HAN YANLONG (author)
2021-10-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME