Rotary kiln hook nail arrangement method

Abstract

The invention relates to a rotary kiln, in particular to a method for arranging stainless steel hooks and nails in the pouring of the inner lining of the rotary kiln used for carbon calcining petroleum coke in the aluminum electrolysis industry. The hook nail arrangement method of the rotary kiln of the present invention includes the following steps: 1) setting the hook nail structure; 2) wrapping the cloth belt; 3) arranging the stainless steel hook nails of Φ14 to be arranged at 10.5 meters between the secondary tuyere and the tertiary tuyere Within, the longitudinal distance between the hook nails on the rotary kiln shell is 200mm; 4) Weld the stainless steel hook nails on the rotary kiln shell according to the roots facing the rotary kiln shell. The invention has the following beneficial effects: the method for arranging the hooks and nails of the rotary kiln effectively prolongs the service life of the rotary kiln, saves a lot of maintenance costs, and reduces environmental pollution caused by industrial garbage such as overhauled kiln linings. The invention is suitable for the maintenance of the rotary kiln used for carbon calcining petroleum coke in the aluminum electrolysis industry and the construction of a new kiln.

Description

technical field [0001] The invention relates to a rotary kiln, in particular to a method for arranging stainless steel hooks and nails in the pouring of the inner lining of the rotary kiln used for carbon calcining petroleum coke in the aluminum electrolysis industry. Background technique [0002] Used in pouring of rotary kiln lining for carbon calcination of petroleum coke in aluminum electrolysis industry, Φ14 stainless steel hook nails are arranged within 3 and a half meters behind the sixth tuyere, and Φ10 stainless steel hook nails are arranged in other parts; stainless steel hook nails and pouring The expansion of the material uses the cloth tape wrapped around the hook nails to form an expansion joint. After the cloth tape is wrapped, due to the construction one by one, it is easy for the construction personnel to tear off the cloth tape when entering and leaving the kiln. There is no expansion joint between the stainless steel hook nail and the castable. When the st...

AI Technical Summary

Problems solved by technology

[0002] Used in pouring of rotary kiln lining for carbon calcination of petroleum coke in aluminum electrolysis industry, Φ14 stainless steel hook nails are arranged within 3 and a half meters behind the sixth tuyere, and Φ10 stainless steel hook nails are arranged in other parts; stainless steel hook nails and pouring The expansion of the material uses the cloth tape wrapped around the hook nails to form an expansion joint. After the cloth tape is wrapped, due to the construction one by one, it is easy for the construction personnel to tear off the cloth tape when entering and leaving the kiln. There is no expansion joint between the stainless steel hook nail and the castable. When the stainless steel hook nails expand during operation, the expansion force destroys the structure of the lining castable, resulting in a loose structure of the lining castable, which affects the life of the kiln

The root size of the original stainless steel hook nails is 25mm. The stainless steel hook nails are fixed by welding the roots of the stainless steel hook nails on the rotary kiln barrel. During use, the Φ14 stainless steel hook nails and the Φ10 stainless steel hook nails are separated from each other due to mechanical vibration. The parts directly welded on the rotary kiln barrel fall off as a whole, which affects the falling off of the rotary kiln lining and affects the use of the rotary kiln

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