Refractory material lining structure for sintering machine air bellow

Abstract

The invention discloses a refractory material lining structure for a sintering machine air bellow. The refractory material lining structure comprises an air bellow body, a refractory material lining plate is arranged on the inner wall of the air bellow body, at least one conical hole is formed in the refractory material lining plate, and the sizes of the conical holes are gradually increased in the direction from the non-working face to the working face of the refractory material lining plate. Conical anchoring parts are arranged at the positions of the sides, close to the air bellow body, inthe conical holes. According to the refractory material lining structure, the refractory material lining plate and the air bellow body are combined through the conical anchoring parts and high-temperature refractory mortar, and a firm overall structure is formed. By means of the high strength, wear resistance, erosion resistance and stripping resistance of the refractory material lining plate, thehigh-temperature use performance of the air bellow body is improved, the replacement and maintenance frequency is reduced, the situation that the air bellow body is corroded and worn through to causesintering air leakage due to the fact that a refractory material lining is prone to being eroded and falling off when the air bellow is in a complex working environment is avoided, and normal sintering production is facilitated; and sintering production energy consumption is reduced, and the yield and quality of sintered ore are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of sintering machine components, and in particular relates to a refractory lining structure for a sintering machine bellows. Background technique [0002] In the iron and steel industry, sintering production is a production process of man-made rich ore. Lean ore that exists in large quantities in nature can be turned into high-quality man-made rich ore that can meet the requirements of blast furnace smelting through ore dressing and sintering, so that natural resources can be fully utilized. The sintering process is a comprehensive process of complex physical and chemical reactions. During the sintering process, fuel combustion and heat exchange, evaporation and condensation of water, decomposition and volatilization of carbonates and sulfides, etc. are carried out. [0003] The sintering production adopts the method of suction and negative pressure. During the sintering production process, the air is sucked...

AI Technical Summary

Problems solved by technology

The bellows is one of the main equipments of the sintering system, which usually uses amorphous refractory materials as the lining body. Under such a complex working environment for a long time, the inner wall of the bellows is cracked and peeled off in a large area due to the wear-resistant layer, which makes the sintered material under the self-weight and negative pressure. Under the action, the steel structure of the bellows body is continuously scoured, and at the same time, the SO in the sintering flue gas 2 , SO 3 、H 2 S, etc. also strongly corrode the steel structure of the bellows body; the above two factors cause the bellows body to wear, and there are corrosion, rust, wear and perforation, which leads to a substantial increase in the air leakage rate of the sintering operation. The sintering air leakage not only increases the energy consumption of the sintering process, But also seriously affect the output and quality of sinter

Images