Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-thermal-shock brick for top combustion hot blast stove and preparation method of high-thermal-shock brick
The invention relates to a high-thermal-shock brick for a top combustion hot blast stove and a preparation method of the high-thermal-shock brick. The high-thermal-shock brick is selected from the following components in percentage by mass: 92-95% of fused quartz, 5-8% of silica powder, 1-1.5% of phosphoric acid and 3-3.5% of a binding agent. The advantages that the primary fused quartz is high in purity, forms a glassy structure in a high-temperature state and is very small in thermal expansion coefficient are utilized, so that the thermal shock resistance stability of the high-thermal-shock brick is improved, the service life of a premixing chamber of a hot blast stove burner is greatly prolonged, and meanwhile, the strength of the high-thermal-shock brick is improved due to the special particle size distribution of the primary fused quartz; alkaline silica sol with the mass fraction of SiO2 being 30% is adopted as a binding agent and is compounded with phosphoric acid, high binding strength is generated in the sintering process, and the strength of a high-thermal-shock brick product is greatly improved; the sintering temperature of the high-thermal-shock brick is far lower than that of a conventional material, and energy conservation and environmental protection are facilitated.
本发明涉及一种用于顶燃式热风炉的高热震砖及其制备方法，所述高热震砖选自包括以质量分数计的如下组分：92％～95％的熔融石英、5％～8％的硅微粉、1％～1.5％的磷酸、3％～3.5％的结合剂。利用一级熔融石英本身纯度高、高温状态下成玻璃态结构、热膨胀系数非常小的优点，进而提高高热震砖的抗热震稳定性，大大提高热风炉燃烧器预混室的使用寿命，同时一级熔融石英特殊的粒度分布有助于提高高热震砖的强度；采用SiO2质量分数为30％的碱性硅溶胶作为结合剂以及磷酸的复合作用，在烧结的过程中产生较强的结合强度，也大大增大高热震砖制品的强度；且该高热震砖的烧结温度远低于常规材料，有利于节能环保。
High-thermal-shock brick for top combustion hot blast stove and preparation method of high-thermal-shock brick
The invention relates to a high-thermal-shock brick for a top combustion hot blast stove and a preparation method of the high-thermal-shock brick. The high-thermal-shock brick is selected from the following components in percentage by mass: 92-95% of fused quartz, 5-8% of silica powder, 1-1.5% of phosphoric acid and 3-3.5% of a binding agent. The advantages that the primary fused quartz is high in purity, forms a glassy structure in a high-temperature state and is very small in thermal expansion coefficient are utilized, so that the thermal shock resistance stability of the high-thermal-shock brick is improved, the service life of a premixing chamber of a hot blast stove burner is greatly prolonged, and meanwhile, the strength of the high-thermal-shock brick is improved due to the special particle size distribution of the primary fused quartz; alkaline silica sol with the mass fraction of SiO2 being 30% is adopted as a binding agent and is compounded with phosphoric acid, high binding strength is generated in the sintering process, and the strength of a high-thermal-shock brick product is greatly improved; the sintering temperature of the high-thermal-shock brick is far lower than that of a conventional material, and energy conservation and environmental protection are facilitated.
本发明涉及一种用于顶燃式热风炉的高热震砖及其制备方法，所述高热震砖选自包括以质量分数计的如下组分：92％～95％的熔融石英、5％～8％的硅微粉、1％～1.5％的磷酸、3％～3.5％的结合剂。利用一级熔融石英本身纯度高、高温状态下成玻璃态结构、热膨胀系数非常小的优点，进而提高高热震砖的抗热震稳定性，大大提高热风炉燃烧器预混室的使用寿命，同时一级熔融石英特殊的粒度分布有助于提高高热震砖的强度；采用SiO2质量分数为30％的碱性硅溶胶作为结合剂以及磷酸的复合作用，在烧结的过程中产生较强的结合强度，也大大增大高热震砖制品的强度；且该高热震砖的烧结温度远低于常规材料，有利于节能环保。
High-thermal-shock brick for top combustion hot blast stove and preparation method of high-thermal-shock brick
一种用于顶燃式热风炉的高热震砖及其制备方法
DONG HONGQIN (Autor:in) / FAN XIAOLE (Autor:in) / LI JIANTAO (Autor:in)
02.07.2021
Patent
Elektronische Ressource
Chinesisch
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