Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of low-thermal-conductivity mullite heat-insulating refractory material
The invention discloses a preparation method of a low-thermal-conductivity mullite heat-insulating refractory material, and belongs to the technical field of refractory materials. The preparation method comprises the following specific steps: preparing the following raw materials in percentage by mass: 10-30% of third-grade alumina, 40-55% of kyanite, 0-30% of coal gangue, 5-10% of aluminate cement, 4-8% of silica fume and 12-16% of starch; adding sodium tripolyphosphate for premixing; preparing a solution from an efficient concentrated cement foaming agent and water, adding the solution into the premixed raw materials, and slowly adding a pore-forming agent while stirring to prepare foam slurry; pouring the foam slurry into a mold, and carrying out the steps of maintenance, demolding and the like to obtain the low-heat-conductivity mullite heat-insulating refractory material. The method of the invention has the advantages of overcoming the defects of easy mold collapse phenomenon and unstable foaming in a pure foaming method, and having the advantages of low volume weight, high temperature resistance, high porosity, small pore diameter and low heat conductivity coefficient.
一种低导热莫来石质隔热耐火材料的制备方法，属于耐火材料技术领域。具体步骤为先备料，质量百分比10～30％的三级矾土、40～55％的蓝晶石、0～30％的煤矸石，5～10％的铝酸盐水泥、4～8％的硅灰和12～16％的淀粉；外加三聚磷酸钠进行预混合；用高效浓缩型水泥发泡剂和水配制成溶液，加入预混合好的原料中，搅拌的同时缓慢加入造孔剂，制备出泡沫料浆；浇注到模具中，经养护、脱模等步骤得到了低导热莫来石质隔热耐火材料。优点在于，克服了单纯发泡法易出现塌模现象、发泡不稳定的缺点，具有容重低、耐高温、气孔率高、气孔直径小且导热系数低的优点。
Preparation method of low-thermal-conductivity mullite heat-insulating refractory material
The invention discloses a preparation method of a low-thermal-conductivity mullite heat-insulating refractory material, and belongs to the technical field of refractory materials. The preparation method comprises the following specific steps: preparing the following raw materials in percentage by mass: 10-30% of third-grade alumina, 40-55% of kyanite, 0-30% of coal gangue, 5-10% of aluminate cement, 4-8% of silica fume and 12-16% of starch; adding sodium tripolyphosphate for premixing; preparing a solution from an efficient concentrated cement foaming agent and water, adding the solution into the premixed raw materials, and slowly adding a pore-forming agent while stirring to prepare foam slurry; pouring the foam slurry into a mold, and carrying out the steps of maintenance, demolding and the like to obtain the low-heat-conductivity mullite heat-insulating refractory material. The method of the invention has the advantages of overcoming the defects of easy mold collapse phenomenon and unstable foaming in a pure foaming method, and having the advantages of low volume weight, high temperature resistance, high porosity, small pore diameter and low heat conductivity coefficient.
一种低导热莫来石质隔热耐火材料的制备方法，属于耐火材料技术领域。具体步骤为先备料，质量百分比10～30％的三级矾土、40～55％的蓝晶石、0～30％的煤矸石，5～10％的铝酸盐水泥、4～8％的硅灰和12～16％的淀粉；外加三聚磷酸钠进行预混合；用高效浓缩型水泥发泡剂和水配制成溶液，加入预混合好的原料中，搅拌的同时缓慢加入造孔剂，制备出泡沫料浆；浇注到模具中，经养护、脱模等步骤得到了低导热莫来石质隔热耐火材料。优点在于，克服了单纯发泡法易出现塌模现象、发泡不稳定的缺点，具有容重低、耐高温、气孔率高、气孔直径小且导热系数低的优点。
Preparation method of low-thermal-conductivity mullite heat-insulating refractory material
一种低导热莫来石质隔热耐火材料的制备方法
LIAN WEIKANG (Autor:in) / GAO CHANGHE (Autor:in) / AN JIANCHENG (Autor:in) / WANG YALI (Autor:in) / SONG JIE (Autor:in) / LI YANJING (Autor:in)
13.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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