Energy-saving refractory lining of rotary kiln

Abstract

The utility model discloses an energy-saving refractory lining of a rotary kiln, which comprises a cylinder body steel plate 5, a heat insulation layer and refractory liners 1 and 3, the refractory liners are composed of a fixed base body 3 and a special-shaped surface body 1, a T-shaped groove 4 is arranged on the inner surface of the fixed base body, an inverted T-shaped protrusion 2 is arranged on the bottom surface of the special-shaped surface body 1, and the T-shaped groove 4 is arranged on the bottom surface of the special-shaped surface body 1. The special-shaped surface body is inserted into the T-shaped groove 4 in the inner surface of the fixing base body through the inverted-T-shaped protrusion 2, the groove 4 and the protrusion 2 are matched in a wedge shape, the fixing base body 3 is fixedly installed on the surface of the heat insulation layer through the fixing hole, materials are driven to turn over through the special-shaped surface body, the materials are prevented from sliding, the materials are forced to turn over, and the purpose that the materials are evenly heated is achieved.

Description

Technical Field

[0001] The utility model relates to a rotary kiln, which is a main equipment used for heating and calcining ores, raw materials and semi-finished products in industries such as metallurgy and building materials. Background Art

[0002] In the current existing technology, the rotary kiln is mainly composed of a cylinder, a transmission gear ring, a supporting wheel, a motor, a reducer, a transmission gear, an insulation layer, a refractory lining, a cooling water pipeline, a burner, a feed port, a discharge port, etc. The cylinder is made of special steel plates spliced ​​and welded. The inner layer of the cylinder steel plate is an insulation layer, which is close to the surface of the steel plate to insulate and prevent heat loss; the inner surface of the insulation layer is a refractory lining. After the refractory lining is seriously worn, it needs to be replaced and repaired. The refractory lining needs to be removed and replaced with a new one. The disassembly and installation time is long, the installation workload is large, and the maintenance cost is high; the inner surface that contacts the material is smooth, and the material slides with the low-speed rotating cylinder. There is less rolling material, and the material at the bottom is less heated, which is not conducive to uniform heating of the material, and the material heating efficiency is low and energy consumption is high. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a refractory lining to drive and force materials to tumble, so as to achieve uniform heating of materials, improve the heating efficiency of materials, save fuel and achieve the purpose of energy saving.

[0004] The utility model rotary kiln is mainly composed of a cylinder, a transmission gear ring, a supporting wheel, a motor, a reducer, a transmission gear, a heat insulation layer, a refractory lining, a cooling water pipeline, a burner, a feed port, a discharge port and the like.

[0005] The refractory lining is composed of a fixed base and a special-shaped surface body. The inner surface of the fixed base has a T-shaped groove, and the bottom surface of the special-shaped surface body has an inverted T-shaped protrusion that matches the T-shaped groove of the fixed base. The special-shaped surface body is inserted into the T-shaped groove on the inner surface of the fixed base through the inverted T-shaped protrusion. The matching T-shaped groove and T-shaped protrusion are wedge-shaped. The fixed base is fixed to the surface of the insulation layer through four fixing holes to press the insulation layer. After the refractory lining is installed, a layer of refractory cement is wrapped on the inner surface and joints of the refractory lining that contact the material to play a reinforcement role.

[0006] During the use of the rotary kiln, the part that is subject to wear and easy to damage is the irregular surface of the refractory lining.

[0007] By adopting the above technical scheme, when the special-shaped surface body is damaged by severe wear, the special-shaped surface body is removed and replaced with a new special-shaped surface body, which is simple to maintain, and the materials and maintenance time used for maintenance are greatly reduced, thereby reducing the maintenance cost and saving refractory materials for maintenance. The special-shaped surface body turns the material over under the rotation of the cylinder, preventing the material from sliding and forcing the material to roll, thereby achieving the purpose of uniform heating of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the special-shaped surface of the refractory lining of the rotary kiln of the utility model;

[0009] Figure 2 It is a schematic diagram of an inverted T-shaped protrusion on the special-shaped surface of the refractory lining of the rotary kiln of the utility model;

[0010] Figure 3 This is a schematic diagram of a fixed base of a refractory lining of a rotary kiln of the utility model;

[0011] Figure 4 This is a schematic diagram of a T-shaped groove of a fixed base of a rotary kiln refractory lining of the utility model;

[0012] Figure 5 The utility model is a structural schematic diagram of a rotary kiln in which a refractory lining is installed on the inner wall of a rotary kiln cylinder insulation layer. DETAILED DESCRIPTION

[0013] The utility model will be further described below in conjunction with the accompanying drawings.

[0014] In order to better illustrate the technical solution and purpose and advantages of the utility model more clearly, the utility model is further described in detail in conjunction with the accompanying drawings and embodiments. The specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0015] like Figure 5 As shown, a rotary kiln cylinder and refractory lining include a cylinder steel plate 5 and an insulating layer, a refractory lining 1, 3, wherein the refractory lining is composed of a fixed base 3 and a profiled surface body 1, the inner surface of the fixed base has a T-shaped groove 4, the bottom surface of the profiled surface body 1 has an inverted T-shaped protrusion 2 matching the T-shaped groove 4 of the fixed base, the profiled surface body is inserted into the T-shaped groove 4 on the inner surface of the fixed base through the inverted T-shaped protrusion 2, the matching T-shaped groove 4 and the T-shaped protrusion 2 are wedge-shaped, the fixed base 3 is fixed to the surface of the insulating layer through four fixing holes, and the insulating layer is pressed.

[0016] like Figure 1 As shown, the shape of a rotary kiln shell refractory lining profiled surface body 1.

[0017] like Figure 2As shown, the shape of the inverted T-shaped protrusion 2 of the special-shaped surface body 1 of the refractory lining of the rotary kiln shell.

[0018] like Figure 3 As shown, the shape of the rotary kiln shell refractory lining fixing base 3, the installation fixing holes 6, and the inverted T-shaped groove 4.

[0019] like Figure 4 As shown, the rotary kiln shell refractory lining fixing base 3 has an inverted T-shaped groove 4 and a mounting fixing hole 6.

Claims

1. A rotary kiln energy-saving refractory lining, mainly composed of a cylinder, a transmission gear ring, a supporting wheel, a motor, a speed reducer, a transmission gear, an insulating layer, a refractory lining, a cooling water pipeline, a burner, a feed port, and a discharge port; the refractory lining is composed of a fixed base (3) and a special-shaped surface body (1), the inner surface of the fixed base has a T-shaped groove (4), the bottom surface of the special-shaped surface body (1) has an inverted T-shaped protrusion (2) matching the T-shaped groove (4) of the fixed base (3), the special-shaped surface body (1) is inserted into the T-shaped groove (4) on the inner surface of the fixed base (3) through the inverted T-shaped protrusion (2), the matching T-shaped groove (4) and the T-shaped protrusion (2) are wedge-shaped, and the fixed base (3) is fixed to the surface of the insulating layer through the fixing hole; it is characterized by: The inner surface of the fixed base body is provided with a T-shaped groove, and the bottom surface of the special-shaped surface body is provided with an inverted T-shaped protrusion.

2. The energy-saving refractory lining of a rotary kiln according to claim 1, characterized in that: The T-shaped groove and the T-shaped protrusion match each other in a wedge shape.

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