The wear-resistant elbow of the powder feeding pipeline mainly starts from the air box at the outlet of the pulverized coal mixer and the powder exhaust fan, to the burner and the tertiary air outlet, and the elbow part of the connecting pipe of the recirculation air duct from the outlet air box of the powder exhaust fan to the inlet of the coal mill. Because the main conveying is the solid powder medium, the wear strength is relatively strong. In the selection of wear-resistant materials for the wear-resistant elbow of the powder feeding pipeline, wear-resistant ceramic materials with high toughness and impact resistance, high hardness and cutting strength should be selected.

        The wear-resistant elbow of the powder feeding pipe lined with wear-resistant ceramic material has very good wear resistance. The hardness reaches about HV1800, and the wear resistance is more than 10 times that of ordinary steel. It also has good impact resistance, even in the case of poor working conditions, it can be easily faced ; the corrosion resistance is also particularly good. After the lining of the wear-resistant ceramic, it does not react with the acid and alkali, and will not be oxidized, resulting in rust mixed into the pulverized coal, resulting in insufficient combustion.

        It is a cost-effective choice to use wear-resistant ceramics as wear-resistant materials for wear-resistant elbows of powder feeding pipelines. Wear-resistant ceramics can make the inner wall of pipelines very flat and smooth, and will not lead to powder bulk materials. The use effect is very good, and the service life is very long. Generally, it is about 10 times that of ordinary elbows. Wear-resistant ceramics are currently used in wear-resistant elbows of powder feeding pipelines. One of the most popular wear-resistant materials.