Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for calcining cement clinker by using high-sulfur coal as fuel
The invention relates to the technical field of cement production, in particular to a method for calcining cement clinker by using high-sulfur coal as fuel, by controlling the content of CaF2, ZnO and PbO in fluorite mine mining waste residues and lead-zinc residues and combining the use of raw materials, sulfur in the coal is fixed in the clinker in a calcium sulphoaluminate mineral form to reduce the circulating enrichment of sulfur and relieve the skinning and blockage of a kiln tail system, so that the production efficiency of the cement clinker is improved. The problem that high-sulfur coal (the total sulfur content is about 6%) cannot be used as a main fuel in cement clinker calcination at present is solved, and continuous and normal operation of the kiln system when the high-sulfur coal is used for calcining the clinker is effectively guaranteed. Meanwhile, clinker heat consumption is reduced; the cost pressure caused by purchasing a large number of commercially available sulfur-fixing agents is avoided, the clinker strength can be improved, and the clinker performance is improved.
本发明涉及水泥生产技术领域，具体为一种用高硫煤作为燃料煅烧水泥熟料的方法，通过萤石矿采矿废渣、铅锌渣中CaF2、ZnO、PbO含量的控制，结合生料的使用，将煤炭中的硫以硫铝酸钙矿物形式固定在熟料中减少硫的循环富集，缓解窑尾系统结皮堵塞，减少窑系统的工艺事故等优点，解决了目前水泥熟料煅烧中主要燃料不能用高硫煤(全硫在6％左右)的问题，有效保证使用高硫煤煅烧熟料时窑系统连续正常运行。同时降低熟料热耗；避免大量采购市售固硫剂带来的成本压力，还能提高熟料强度，改善熟料性能。
Method for calcining cement clinker by using high-sulfur coal as fuel
The invention relates to the technical field of cement production, in particular to a method for calcining cement clinker by using high-sulfur coal as fuel, by controlling the content of CaF2, ZnO and PbO in fluorite mine mining waste residues and lead-zinc residues and combining the use of raw materials, sulfur in the coal is fixed in the clinker in a calcium sulphoaluminate mineral form to reduce the circulating enrichment of sulfur and relieve the skinning and blockage of a kiln tail system, so that the production efficiency of the cement clinker is improved. The problem that high-sulfur coal (the total sulfur content is about 6%) cannot be used as a main fuel in cement clinker calcination at present is solved, and continuous and normal operation of the kiln system when the high-sulfur coal is used for calcining the clinker is effectively guaranteed. Meanwhile, clinker heat consumption is reduced; the cost pressure caused by purchasing a large number of commercially available sulfur-fixing agents is avoided, the clinker strength can be improved, and the clinker performance is improved.
本发明涉及水泥生产技术领域，具体为一种用高硫煤作为燃料煅烧水泥熟料的方法，通过萤石矿采矿废渣、铅锌渣中CaF2、ZnO、PbO含量的控制，结合生料的使用，将煤炭中的硫以硫铝酸钙矿物形式固定在熟料中减少硫的循环富集，缓解窑尾系统结皮堵塞，减少窑系统的工艺事故等优点，解决了目前水泥熟料煅烧中主要燃料不能用高硫煤(全硫在6％左右)的问题，有效保证使用高硫煤煅烧熟料时窑系统连续正常运行。同时降低熟料热耗；避免大量采购市售固硫剂带来的成本压力，还能提高熟料强度，改善熟料性能。
Method for calcining cement clinker by using high-sulfur coal as fuel
一种用高硫煤作为燃料煅烧水泥熟料的方法
YU SANPING (Autor:in)
29.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Method for calcining cement clinker by using high-sulfur coal
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