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Views: 56 Author: Site Editor Publish Time: 2020-08-26 Origin: Site
Domestic existing material for rise pipe of coke oven is common clay material, each circle is divided into several blocks to form a ring, several rings are installed vertically. In the long-term production practice, due to the influence of high temperature, rain and dust, tar corrosion and open fire baking, the clay lining brick inside the rise pipe is easy to burn and fall off, and the shell steel plate is directly baked by open fire, which will cause the base perforation, affect the normal production of coke oven, and cause major safety risks.
The thermal shock stability is poor and the safety risk is high.
The material has high thermal conductivity, high outer wall temperature and huge energy consumption.
The surface of the product is rough and easy to absorb graphite and tar
There are defects in the overall structure, and the bricks are easy to loose and fall off due to many joints in masonry bricks
The replacement cycle of traditional products is only 10-12 months, with short service life and high maintenance and operation costs.
Ascension Pipe Brick with Ceramic Glaze for Coke Oven with Integral Structure developed by YDRM is mainly made of cordierite-mullite-fused_quartz composite material, which overcomes the performance limitation of traditional products. It has the characteristics of excellent thermal shock stability, high strength, small thermal conductivity, good permeability resistance and corrosion resistance. The advantages of the products are as follows:
The product adopts integral casting production, and is directly installed by several annular parts in the later stage, which greatly reduces the difficulty of installation, avoids the structural instability defects of traditional products and improves the engineering efficiency.
High temperature ceramic glaze is applied on the working face, and tar and graphite are not easy to adhere, which greatly reduces the daily maintenance workload of industry customers.
Due to the characteristics of the new material, the outer wall temperature of the rise pipe is greatly reduced and the energy consumption is reduced. At the same time, due to the stable performance of the product, the service life is extended, and the economic benefits are prominent.
Item | Unit | Typical Values | |
Chemical Analysis | Al2O3 | % | ≥45 |
SiO2 | % | ≤55 | |
MgO | % | ≥3 | |
CMOR（cold modulus of rupture） | Mpa | ≥5 | |
C.C.S. (cold crushing strength) | Mpa | ≥55 | |
Bulk Density | g/cm3 | ≥2.1 | |
Apparent Porosity | % | ≤20 | |
Thermal Shock Resistance at 1100℃ (water) | times | ≥50 | |
Thermal Conductivity 1000℃ | w/M.K | ≤1.0 | |
Coke oven repair project of Nanjing Meishan Steel in 2019.
Coke oven project Ⅱ of Shougang Jingtang United Iron & Steel, used in two7.63-meters coke ovens in 2018.
Coke oven project of Baosteel, used in 6-meters coke oven in 2012.
