Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of energy-saving fire-resistant prefabricated part for ferronickel pre-reduction rotary kiln
The invention provides a preparation method of an energy-saving fire-resistant prefabricated part for a ferronickel pre-reduction rotary kiln. The prefabricated part is composed of an inner-layer wear-resistant heavy castable and an outer-layer low-heat-conduction light-weight heat-preservation castable. By adding an interface reactant, the heavy castable and the light castable are fused through interface reaction to prepare an integral material, the interface of the two materials is eliminated, thermal stress concentration generated by the difference of thermal expansion coefficients of materials between the inner layer and the outer layer in the operation process of the rotary kiln can be released in a transition layer between the inner layer and the outer layer, and damage caused by extrusion cracking of an interface between the heavy castable and the light castable is avoided. The problems of material damage and the like caused by falling and sliding of heavy materials in the prior art are also solved. The preparation method is simple and convenient, large-scale popularization and implementation can be achieved, and meanwhile the masonry construction efficiency is high.
本发明提供一种镍铁预还原回转窑用节能型耐火预制件的制备方法，该预制件由内层耐磨型重质浇注料和外层低导热轻质保温浇注料构成。通过添加界面反应剂，将重质浇注料与轻质浇注料通过界面反应融合制备成为一个整体材料，消除两种材料的界面，在回转窑运转过程中由于内、外层之间材质热膨胀系数的差异产生的热应力集中，会在二者之间的过渡层得以释放，避免了重质浇注料与轻质浇注料之间界面的挤压开裂导致的损坏；也解决了现有技术中的重质材料掉落、滑移造成的材料损毁等问题。制备方法简单方便，可大规模推广实施，同时砌筑施工效率高。
Preparation method of energy-saving fire-resistant prefabricated part for ferronickel pre-reduction rotary kiln
The invention provides a preparation method of an energy-saving fire-resistant prefabricated part for a ferronickel pre-reduction rotary kiln. The prefabricated part is composed of an inner-layer wear-resistant heavy castable and an outer-layer low-heat-conduction light-weight heat-preservation castable. By adding an interface reactant, the heavy castable and the light castable are fused through interface reaction to prepare an integral material, the interface of the two materials is eliminated, thermal stress concentration generated by the difference of thermal expansion coefficients of materials between the inner layer and the outer layer in the operation process of the rotary kiln can be released in a transition layer between the inner layer and the outer layer, and damage caused by extrusion cracking of an interface between the heavy castable and the light castable is avoided. The problems of material damage and the like caused by falling and sliding of heavy materials in the prior art are also solved. The preparation method is simple and convenient, large-scale popularization and implementation can be achieved, and meanwhile the masonry construction efficiency is high.
本发明提供一种镍铁预还原回转窑用节能型耐火预制件的制备方法，该预制件由内层耐磨型重质浇注料和外层低导热轻质保温浇注料构成。通过添加界面反应剂，将重质浇注料与轻质浇注料通过界面反应融合制备成为一个整体材料，消除两种材料的界面，在回转窑运转过程中由于内、外层之间材质热膨胀系数的差异产生的热应力集中，会在二者之间的过渡层得以释放，避免了重质浇注料与轻质浇注料之间界面的挤压开裂导致的损坏；也解决了现有技术中的重质材料掉落、滑移造成的材料损毁等问题。制备方法简单方便，可大规模推广实施，同时砌筑施工效率高。
Preparation method of energy-saving fire-resistant prefabricated part for ferronickel pre-reduction rotary kiln
一种镍铁预还原回转窑用节能型耐火预制件的制备方法
WEI YI (Autor:in) / CHEN QI (Autor:in) / LIU WENTAO (Autor:in) / ZHU XIAODONG (Autor:in) / ZHAO LIANG (Autor:in) / QIN HONGBIN (Autor:in) / ZHOU JUN (Autor:in) / YANG FAN (Autor:in) / YANG TIANHE (Autor:in) / WU YUNPENG (Autor:in)
20.07.2021
Patent
Elektronische Ressource
Chinesisch
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