Anchor nail and method for partial repair of refractory bricks in rotary kiln
A technology of refractory bricks and anchor nails, which is applied in the field of metallurgy, can solve the problems of ramming material falling off, time-consuming and laborious, etc., and achieve the effect of prolonging the service life and reducing material consumption
Active Publication Date: 2016-03-16
LAIWU IRON & STEEL GRP
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the technical problem that the overall replacement method is time-consuming and labor-intensive in the existing rotary kiln refractory brick repair process, and the partial repair method is easy to make the ramming material fall off the surface of the refractory brick, thereby providing a method for Anchor nails and methods for partial repair of refractory bricks in rotary kilns. The anchor nails are reasonable in design, simple in structure, easy to process, easy to operate, save time and effort, and save refractory materials. The technology of partial repair of refractory bricks in rotary kilns without baking
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Embodiment 1
[0037] Such as image 3 As shown, a refractory brick 5 with a width of 300mm, a length of 500mm, and a thickness of 230mm is repaired in the rotary kiln, and an anchor nail with a V-shaped angle of 60°, a height of 150mm, and a diameter of 8mm is selected. First, purge the refractory brick 5 that needs to be repaired; then turn the hole on the refractory refractory 5 with an electric switch, and obtain the jack 4 with a diameter of 8mm and a depth of 90mm to 100mm, and the number of holes is 5 pairs. The distance is 167.7mm, and the jacks are arranged as Figure 4 shown. Drive the anchor nails into the well-turned socket 4 on the surface of the refractory brick 5, and leave 65mm to 70mm (perpendicular to the direction of the refractory brick) outside the refractory brick 5; add the ramming material 3 to the refractory brick 5 layer by layer , and use a hand hammer to ram it layer by layer until it is firm and smooth until the surface layer of the ramming material is at the s...
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Abstract
The invention relates to an anchoring nail for locally repairing refractory bricks of rotary kilns. The anchoring nail comprises a V-shaped reinforcing steel bar (1) and a plurality of anchoring steel sheets (2). The anchoring steel sheets (2) are uniformly distributed at two ends of the V-shaped reinforcing steel bar (1), and one end of each anchoring steel sheet (2) is welded at the corresponding end of the V-shaped reinforcing steel bar (1). The invention further provides a method for locally repairing the refractory bricks of the rotary kilns. The anchoring nail and the method have the advantages that the method is used for closely connecting the refractory bricks with ramming materials by the aid of the anchoring nail, so that the ramming materials are not easy to fall off from the surfaces of the refractory bricks, the service lives of the refractory bricks can be prolonged, material consumption can be reduced, repair and maintenance can be decreased, and the work efficiency of production lines can be improved.
Description
technical field [0001] The invention relates to the technical field of metallurgy, in particular to an anchor nail and a method for partial repair of refractory bricks in a rotary kiln. Background technique [0002] At present, because the existing refractory bricks can be used as high-temperature building materials and structural materials for construction kilns and various thermal equipment, and can withstand various physical and chemical changes and mechanical actions at high temperatures; therefore, refractory bricks are used in many equipment structure has a wide range of applications. The rotary kiln used to produce pellets generally uses refractory bricks (1100 ° C ~ 1200 ° C) with a thickness of 300 mm as structural materials to ensure that the rotary kiln has good working performance. [0003] Under normal working conditions, due to the generation of powder, rings will form on the inner wall of the rotary kiln. When the rings reach a certain thickness, normal produ...
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IPC IPC(8): F27D1/14F27D1/16
Inventor 刘元意刘运东李建云罗川林晓辉孝保忠闫兴森王海禹刘锡强侯训良
Owner LAIWU IRON & STEEL GRP