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Integrally-poured blast furnace hot air duct

A technology of integral pouring and hot air pipelines, which is applied to blast furnaces, blast furnace details, blast furnace parts, etc., can solve problems such as poor connection stability of the overall structure, shear force cracks, and difficult construction, and achieve long service life and eliminate shearing Stable and reliable effect of force and structure

Inactive Publication Date: 2018-04-06
河南格锐新材料科技有限公司
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Problems solved by technology

[0002] Blast furnace ironmaking is currently the most widely used ironmaking method in the world. Usually, each blast furnace is equipped with three to four hot blast stoves. The function of the hot blast stove is to store and provide hot blast for blast furnace smelting. The pipes are connected, and the hot air from the hot blast stove is sent to the blast furnace through the hot blast main pipe, the hot air surrounding pipe and the tuyere device. At present, the method commonly used in the blast furnace hot air pipe is to line the metal shell with fiber cotton and build refractory bricks, and the overall structure is stable. Poor performance, poor sealing, prone to local cracks due to high shear force during thermal expansion, and difficult construction

Method used

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  • Integrally-poured blast furnace hot air duct

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] see Figure 1-4 , an embodiment provided by the present invention: an integrally cast blast furnace hot blast pipeline, comprising a steel shell 1, a refractory layer 6, a fixed anchor 7 and a reinforcing rib plate 10, connecting flanges 2 are fixed at both ends of the steel shell 1, and The connecting flange 2 is provided with a mounting hole 3, the inner wall of the steel shell 1 is provided with a reinforcing rib 10, the inner wall of the steel shell...

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Abstract

The invention discloses an integrally poured blast furnace hot blast pipeline, which comprises a steel shell, a refractory layer, a fixed anchor and a reinforcing rib plate. The two ends of the steel shell are fixed with connecting flanges, and the connecting flanges are provided with installation holes. The inner wall of the steel shell is provided with reinforcing ribs, the inner wall of the steel shell is fixed with a bracket, the bracket is welded with fixed anchors and foils, the inside of the steel shell is provided with a heat insulation layer, and the heat insulation layer is fixed through the bracket on the bracket. The anchor is fixed on the inner wall of the steel shell, the lining is fixed on the bracket between the inner wall of the steel shell and the outer wall of the heat insulation layer, and the inner wall of the heat insulation layer is provided with a refractory layer. The invention is easy to install, improves the laying efficiency of the blast furnace hot air pipeline, has stable structure, and has excellent thermal shock stability at high temperature.

Description

technical field [0001] The invention relates to the technical field of pipeline equipment, in particular to an integrally cast blast furnace hot air pipeline. Background technique [0002] Blast furnace ironmaking is currently the most widely used ironmaking method in the world. Usually, each blast furnace is equipped with three to four hot blast stoves. The function of the hot blast stove is to store and provide hot blast for blast furnace smelting. The pipes are connected, and the hot air from the hot blast stove is sent to the blast furnace through the hot blast main pipe, the hot air surrounding pipe and the tuyere device. At present, the method commonly used in the blast furnace hot air pipe is to line the metal shell with fiber cotton and build refractory bricks, and the overall structure is stable. Poor performance, poor sealing, prone to local cracks due to high shear force during thermal expansion, and difficult construction. Contents of the invention [0003] Th...

Claims

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Application Information

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IPC IPC(8): C21B9/10
CPCC21B9/10
Inventor 胡耀伟
Owner 河南格锐新材料科技有限公司
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