Rotary kiln masonry structure

Abstract

The invention discloses a rotary kiln building structure, relates to the technical field of rotary kiln manufacturing and maintaining, and provides a rotary kiln building structure not prone to being damaged. The rotary kiln building structure comprises a rotary kiln barrel body, a building structure and blocking brick rings. The building structure comprises fire-resisting insulating bricks, bottoming bricks and fixed steel bars. The fire-resisting insulating brick are built in the length direction of the rotary kiln barrel body to form multiple fire-resisting insulating brick lines in a circumferential array, and connecting steel bars welded to the rotary kiln barrel body are arranged at the bottoms of the fire-resisting insulating bricks. The bottoming bricks are arranged between the adjacent fire-resisting insulating brick lines. Each fixed steel bar is in a V shape. The fixed steel bars are located in space between the adjacent bottoming bricks, and the pointed ends of the fixed steel bars and the rotary kiln barrel body are welded, and the bottoming bricks are pressed down. The remaining space between the adjacent fire-resisting insulating brick lines is filled with refractory castables. The blocking brick rings are arranged in the length direction of the rotary kiln barrel body at intervals and are connected with the rotary kiln barrel body, and the building structure is divided by the blocking brick rings into multiple sections. The rotary kiln building structure can be applied to manufacturing or maintaining of a rotary kiln.

Description

technical field [0001] The invention relates to the technical field of manufacture and maintenance of a rotary kiln, in particular, a rotary kiln masonry structure is designed. Background technique [0002] At present, the applicant adopts the "calcification roasting-sulfuric acid leaching" process in the production of vanadium oxide, wherein the calcification roasting process is carried out in a rotary kiln. The rotary kiln used by the applicant for the calcification and roasting process is a large rotary kiln with a length of 90 meters and a diameter of 3.6 meters. The output of the rotary kiln is 20 tons per hour, and the rotation speed reaches above 40HZ. The rotary kiln is made of ordinary refractory bricks. Specifically, a layer of lightweight bricks is first built in the rotary kiln body, and then a layer of refractory bricks is built on the lightweight bricks. The gaps between the bricks are jointed with refractory mud. When the gap is large, use 0.5mm heat-resistan...

AI Technical Summary

Problems solved by technology

The advantages of the above kiln building method are low cost and simple and convenient masonry, but it also has the following disadvantages: 1. There are many gaps in the bricks, and the bricks are easy to fall off and crush when they are thermally expanded and contracted during operation; Easily damaged, resulting in shedding, breakage, broken bricks

Refractory bricks are easily damaged, which shortens the service life of rotary kiln brickwork, increases the frequency of kiln masonry, seriously restricts production, and causes vanadium loss

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