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Refractory castable for forming gradient heat preservation on working layer of furnace kiln and use method of refractory castable
The invention relates to a refractory castable for forming gradient heat preservation on a furnace lining. The refractory castable comprises the following raw materials in percentage by weight: 50-70% of aggregate with the particle size of more than or equal to 1mm; 20-35% of fine powder with a particle size of less than or equal to 0.088 mm; 1-3% of fiber; 0.05%-0.1% of a dispersing agent; 0.01%-0.02% of a coagulation accelerator; 5-8% of a binding agent; no more than 20% of alumina foam; water accounting for 6-8% of the total weight of the raw materials is added; the use method comprises the following steps: dividing the working layer in the industrial furnace or the high-temperature container into a working layer I, a working layer II and a working layer III from inside to outside according to the thickness of the working layer, and respectively pouring; preparing a castable of the working layer I; preparing a castable of the second working layer; and preparing a castable of a working layer III. According to the invention, under the condition that the compressive strength of 1500 DEG C * 3h is not lower than 40MPa, the furnace kiln working lining is respectively poured according to the working layer I, the working layer II and the working layer III, and the heat preservation gradient is formed through the density gradient structure design of each layer of castable, so that the heat preservation and heat insulation performance is improved, that is, the surface temperature of the furnace kiln can be reduced by at least 35 DEG C, and the heat transfer is reduced by about 800MJ.
一种使炉窑内衬形成梯度保温的耐火浇注料，其原料及wt％含量为：粒度≥1mm的骨料：50～70％；粒度≤0.088mm的细粉：20～35％；纤维：1～3％；分散剂：0.05～0.1％；促凝剂：0.01～0.02％；结合剂：5～8％；氧化铝泡沫不超过20％；外加上述原料总重量的6～8％的水；使用方法：将工业炉窑或高温容器中的工作层根据其厚度自内向外分为工作层一、工作层二、工作层三分别进行浇筑：工作层一浇注料的制备；工作层二浇注料的制备；工作层三浇注料的制备。本发明在保证1500℃×3h耐压强度不低于40MPa下，通过将炉窑工作衬按照工作层一、工作层二及工作层三分别进行浇筑，并通过各层浇注料密度梯度结构设计而形成保温梯度，使保温隔热性能提升，即炉窑外表温度至少可降低35℃，传热减少约800MJ。
Refractory castable for forming gradient heat preservation on working layer of furnace kiln and use method of refractory castable
The invention relates to a refractory castable for forming gradient heat preservation on a furnace lining. The refractory castable comprises the following raw materials in percentage by weight: 50-70% of aggregate with the particle size of more than or equal to 1mm; 20-35% of fine powder with a particle size of less than or equal to 0.088 mm; 1-3% of fiber; 0.05%-0.1% of a dispersing agent; 0.01%-0.02% of a coagulation accelerator; 5-8% of a binding agent; no more than 20% of alumina foam; water accounting for 6-8% of the total weight of the raw materials is added; the use method comprises the following steps: dividing the working layer in the industrial furnace or the high-temperature container into a working layer I, a working layer II and a working layer III from inside to outside according to the thickness of the working layer, and respectively pouring; preparing a castable of the working layer I; preparing a castable of the second working layer; and preparing a castable of a working layer III. According to the invention, under the condition that the compressive strength of 1500 DEG C * 3h is not lower than 40MPa, the furnace kiln working lining is respectively poured according to the working layer I, the working layer II and the working layer III, and the heat preservation gradient is formed through the density gradient structure design of each layer of castable, so that the heat preservation and heat insulation performance is improved, that is, the surface temperature of the furnace kiln can be reduced by at least 35 DEG C, and the heat transfer is reduced by about 800MJ.
一种使炉窑内衬形成梯度保温的耐火浇注料，其原料及wt％含量为：粒度≥1mm的骨料：50～70％；粒度≤0.088mm的细粉：20～35％；纤维：1～3％；分散剂：0.05～0.1％；促凝剂：0.01～0.02％；结合剂：5～8％；氧化铝泡沫不超过20％；外加上述原料总重量的6～8％的水；使用方法：将工业炉窑或高温容器中的工作层根据其厚度自内向外分为工作层一、工作层二、工作层三分别进行浇筑：工作层一浇注料的制备；工作层二浇注料的制备；工作层三浇注料的制备。本发明在保证1500℃×3h耐压强度不低于40MPa下，通过将炉窑工作衬按照工作层一、工作层二及工作层三分别进行浇筑，并通过各层浇注料密度梯度结构设计而形成保温梯度，使保温隔热性能提升，即炉窑外表温度至少可降低35℃，传热减少约800MJ。
Refractory castable for forming gradient heat preservation on working layer of furnace kiln and use method of refractory castable
一种使炉窑工作层形成梯度保温的耐火浇注料及使用方法
LIU LI (author) / JIANG XINGPING (author) / KONG YONGJIANG (author) / ZHOU WANGZHI (author) / ZHANG HONGLEI (author)
2024-08-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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