Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of refractory brick resistant to molten salt corrosion
The invention relates to the field of new materials, and especially relates to a preparation method of a refractory brick resistant to molten salt corrosion. The method comprises the following steps: adding iron oxide powder into fly ash to increase the content of iron oxide in a mixture, adding an exciting agent into water, uniformly mixing, adding into fly ash and modified rare earth slag, uniformly stirring to form slurry, heating and exciting while stirring, cooling to room temperature, and calcining and vitrifying zirconium oxide, manganese tungstate, zinc diborate oxide and rare earth nitrate to obtain the refractory brick. The refractory brick disclosed by the invention is prepared by using cheap fly ash and waste rare earth slag as main raw materials, doping powder with a function enhancing effect and performing ceramization calcination, and the refractory brick is low in preparation cost, simple in process and relatively good in molten salt corrosion resistance; and the problem that the molten alkali metal salt corrodes the refractory lining of the rotary kiln due to the fact that the alkali metal salt in the waste residues is heated to be in a molten state is effectively solved, and the maintenance cost of the rotary kiln is reduced.
本发明涉及新材料领域，具体关于一种耐熔融盐腐蚀的耐火砖的制备方法；在粉煤灰中加入氧化铁粉末，提高混合物氧化铁含量，然后将激发剂加入到水中，混合均匀后加入到粉煤灰和改性稀土渣中，拌和均匀后形成浆状体，然后在搅拌下升温激发，降温到室温后将氧化锆，钨酸锰，二硼酸锌一氧化物和稀土硝酸盐，经过煅烧陶化后得到；本发明的耐火砖使用廉价的粉煤灰和废料稀土渣为主要原材料，通过掺入功能增强作用的粉体，并经过陶瓷化煅烧制备得到，其制备成本低，工艺简单，具有较好的耐熔融盐腐蚀的性能；有效的解决了废渣中的碱金属盐受热而成熔融状态，熔融碱金属盐会对回转窑的耐火衬里产生腐蚀的问题，降低回转窑维护成本。
Preparation method of refractory brick resistant to molten salt corrosion
The invention relates to the field of new materials, and especially relates to a preparation method of a refractory brick resistant to molten salt corrosion. The method comprises the following steps: adding iron oxide powder into fly ash to increase the content of iron oxide in a mixture, adding an exciting agent into water, uniformly mixing, adding into fly ash and modified rare earth slag, uniformly stirring to form slurry, heating and exciting while stirring, cooling to room temperature, and calcining and vitrifying zirconium oxide, manganese tungstate, zinc diborate oxide and rare earth nitrate to obtain the refractory brick. The refractory brick disclosed by the invention is prepared by using cheap fly ash and waste rare earth slag as main raw materials, doping powder with a function enhancing effect and performing ceramization calcination, and the refractory brick is low in preparation cost, simple in process and relatively good in molten salt corrosion resistance; and the problem that the molten alkali metal salt corrodes the refractory lining of the rotary kiln due to the fact that the alkali metal salt in the waste residues is heated to be in a molten state is effectively solved, and the maintenance cost of the rotary kiln is reduced.
本发明涉及新材料领域，具体关于一种耐熔融盐腐蚀的耐火砖的制备方法；在粉煤灰中加入氧化铁粉末，提高混合物氧化铁含量，然后将激发剂加入到水中，混合均匀后加入到粉煤灰和改性稀土渣中，拌和均匀后形成浆状体，然后在搅拌下升温激发，降温到室温后将氧化锆，钨酸锰，二硼酸锌一氧化物和稀土硝酸盐，经过煅烧陶化后得到；本发明的耐火砖使用廉价的粉煤灰和废料稀土渣为主要原材料，通过掺入功能增强作用的粉体，并经过陶瓷化煅烧制备得到，其制备成本低，工艺简单，具有较好的耐熔融盐腐蚀的性能；有效的解决了废渣中的碱金属盐受热而成熔融状态，熔融碱金属盐会对回转窑的耐火衬里产生腐蚀的问题，降低回转窑维护成本。
Preparation method of refractory brick resistant to molten salt corrosion
一种耐熔融盐腐蚀的耐火砖的制备方法
ZHOU YANGYANG (Autor:in)
31.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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