The grate bar is the main part of the sintering machine, and it is a wearing part. The length of its service life directly affects the production operation rate of the sintering machine and the production cost of sintering ore. The working conditions of the grate bars of the sintering machine are very bad, and the temperature changes greatly. The temperature of the grate bars during sintering is generally 800°C-1000°C. After unloading, the cooling temperature in the air drops rapidly to 100°C-300°C, and it works in a medium containing CO, CO2, SO2 and water vapor, and is subject to the impact and friction of sintered ore during use.

During the generation process of the sintering system, the unqualified particles screened in the sintered finished ore are used as the bottom material on the grate bar of the sintering machine to prevent direct contact with the mixture from bonding and paste, resulting in a serious decrease in the permeability of the sintered material layer, which directly affects the sintering. The improvement of mine production and quality and the improvement of economic and technical indicators.

The function of the grate is to form a trough-shaped space with the trolley rail to accommodate and carry the mineral material. The part of the grate bar in contact with the mineral material is the upper surface, and the two ends of the upper part of the grate bar are stressed and play a supporting role. The main component of sintered grate is commonly used high temperature nickel alloy.

sinter grate bar

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