Construction method for preventing large cracks of refractory pouring body in the high temperature furnace
A construction method and pouring body technology, applied in furnaces, furnace components, lining repair and other directions, can solve problems such as water loss and internal cracks, and achieve the effects of extending service life, low cost and high speed
Inactive Publication Date: 2019-01-22
北京联合荣大工程材料股份有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to provide a construction method that can greatly reduce the volume deformation in the hardening process of the material and effectively solve the internal cracks and surface cracks caused by the water loss of the refractory cast body, so as to solve the technical problems in the above-mentioned background technology
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[0035] Such as figure 1 As shown, the embodiment of the present invention provides a construction method for preventing large cracks in the castable refractory body in a high-temperature furnace. During the pouring process of the castable 2 in the furnace body 1, multi-layer mosaic blocks are placed sequentially from bottom to top, including the following process step:
[0036] Step S110: preparation of mosaic block 3;
[0037] Step S120: after pouring the castable 2 with a certain thickness by pumping, place the first layer of mosaic blocks 3 . Such as figure 2 As shown, during the pumping and pouring process of self-flowing castables, after a certain thickness is poured, the prefabricated blocks 3 are placed in the unhardened pouring body at a certain distance, and the horizontal and vertical distances of the prefabricated blocks are not strictly required. pouring;
[0038] Step S130: After placing the first layer of mosaic blocks 3, continue pouring a certain thickness...
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Abstract
The invention provides a construction method for preventing large cracks of refractory pouring body in a high temperature furnace, which relates to the technical field of construction of refractory pouring body in a high temperature furnace. The construction method is to place multilayer mosaic blocks sequentially from bottom to top in the pouring process. The first step is to prepare the mosaic blocks. After pouring a certain thickness of pouring material by pumping, the first layer of mosaic blocks is placed. After finishing the first layer of mosaic blocks, the pouring material of a certainthickness is continuously poured, and then the second layer of mosaic blocks is placed. In accordance with the above-mentioned way, the rest of the mosaic blocks are placed in turn. After the last layer of mosaic blocks is placed, the pouring is continued till the pouring material covers the surface of the last layer of mosaic blocks. The construction method shares the merits of simple method, low cost and fast speed, and greatly reduces the volume deformation of the pouring material during the hardening process. Meanwhile, the construction method effectively eliminates the internal cracks without affecting the thermal conductivity of the material,improves the heat transfer efficiency and effect and prolongs the service life of refractory pouring body in the high temperature furnace.
Description
technical field [0001] The invention relates to the technical field of construction of refractory castables for high-temperature furnaces, in particular to a construction method that can effectively prevent large cracks from occurring in refractory castables. Background technique [0002] During the curing process after pouring of refractory castables, due to the evaporation of water, the castable body shrinks and cracks occur. Castables use different raw materials, and the size of shrinkage cracks is also different. The evenly distributed extremely small cracks (such as less than 0.1mm) in the cast working lining of industrial kilns will be naturally healed due to thermal expansion during use, and the effect on the use effect is not obvious. But concentrated cracks will have a fatal impact on use. There are two types of concentrated cracks: large cracks and multiple small cracks concentrated in a small area. [0003] At present, there are roughly two methods of controlli...
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Login to View More IPC IPC(8): F27D1/16
CPCF27D1/1621
Inventor 孙赛阳章荣会宋连足邓乐锐赵金秋王司言
Owner 北京联合荣大工程材料股份有限公司