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Method for maintaining and building 320-ton torpedo ladle cone working layer

A technology of working layers and torpedo tanks, applied in the direction of manufacturing tools, metal processing equipment, casting melt containers, etc., can solve the problems of long construction period, reduced maintenance workload, large consumption of refractory materials, etc., and achieve shortened maintenance period and maintenance work The effect of reducing the quantity and maintenance cost

Inactive Publication Date: 2013-10-16
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the disadvantages existing in the maintenance of refractory bricks in the working layer of the torpedo tank cone: large amount of engineering, long construction period, large consumption of refractory materials, etc., and provides a tank age that can ensure safe operation and maintain the original intermediate repair process of 1350 times. On the premise that the maintenance period is shortened by no less than 50%, the maintenance workload is significantly reduced, and the amount of refractory materials is saved by at least 40%, the maintenance masonry method of the 320-ton torpedo tank cone working layer

Method used

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  • Method for maintaining and building 320-ton torpedo ladle cone working layer
  • Method for maintaining and building 320-ton torpedo ladle cone working layer
  • Method for maintaining and building 320-ton torpedo ladle cone working layer

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Effect test

Embodiment 1

[0029] The maintenance and masonry of the 320-ton torpedo tank cone working layer is carried out in accordance with the following steps:

[0030] 1) When the torpedo tank needs to be overhauled, the working layer should be cleaned first, and the residual thickness of the working layer should be kept at 80mm;

[0031] 2) Use aluminum silicon carbide cement and add water to smooth the working layer; the ratio of aluminum silicon carbide cement to water is 100:26;

[0032] 3) Dry the flattened working layer naturally for 24 hours;

[0033] 4) Build the refractory brick layer according to the conventional method. The refractory bricks are of the same structure and have different sizes. Special-shaped one, special-shaped two and special-shaped three are used for coordinating masonry, and the pieces are listed in Table 1; each ring is built to the center with lock bricks Close the door; the masonry is all wet masonry, the mud fullness is 96%, the brick joint is not more than 2mm an...

Embodiment 2

[0042] The maintenance and masonry of the 320-ton torpedo tank cone working layer is carried out in accordance with the following steps:

[0043] 1) When the torpedo tank needs to be overhauled, the working layer should be cleaned first, and the residual thickness of the working layer should be kept at 82mm;

[0044] 2) Use aluminum silicon carbide cement and add water to smooth the working layer; the ratio of aluminum silicon carbide cement to water is 100:26;

[0045] 3) Dry the flattened working layer naturally, and the drying time is 24.5 hours;

[0046] 4) Build the refractory brick layer according to the conventional method. The refractory bricks are of the same structure and have different sizes. Special-shaped one, special-shaped two and special-shaped three are used for coordinating masonry, and the pieces are listed in Table 1; each ring is built to the center with lock bricks Close the door; the masonry is all wet masonry, the mud fullness is 96%, the brick joint i...

Embodiment 3

[0055] The maintenance and masonry of the 320-ton torpedo tank cone working layer is carried out in accordance with the following steps:

[0056]1) When the torpedo tank needs to be overhauled, the working layer should be cleaned first, and the residual thickness of the working layer should be kept at 85mm;

[0057] 2) Use aluminum silicon carbide cement and add water to smooth the working layer; the ratio of aluminum silicon carbide cement to water is 100:26;

[0058] 3) Dry the flattened working layer naturally for 25 hours;

[0059] 4) Build the refractory brick layer according to the conventional method. The refractory bricks are of the same structure and have different sizes. Special-shaped one, special-shaped two and special-shaped three are used for coordinating masonry, and the pieces are listed in Table 1; each ring is built to the center with lock bricks Close the door; the masonry is all wet masonry, the mud fullness is 96%, the brick joint is not more than 2mm and...

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Abstract

A method for maintaining and building a 320-ton torpedo ladle cone working layer includes the steps of (1) cleaning the working layer and making the thickness of the left working layer not less than 80mm, (2) leveling the working layer in a painting mode after water is added into carborundum fire clay, (3) naturally drying the leveled working layer, (4) building a refractory brick layer in a conventional mode, wherein refractory bricks are identical in structure and different in size, and first special-shaped bricks, second special-shaped bricks and third special-shaped bricks are matched with one another for building of the refractory brick layer, (5) closely smearing a combination portion of the front end and a tail portion wall of a torpedo ladle with refractory castable, and roasting and preserving temperature according to phases. According to the method, safety operation of the torpedo ladle is guaranteed, the torpedo ladle can serve for 1350 times in an original process that only etched refractory materials are demolished, a maintenance working period can be shortened by at least 50%, maintenance work load is obviously reduced, the refractory materials used in maintenance is saved at least 40%, and maintenance cost is greatly reduced.

Description

technical field [0001] The invention relates to a masonry method for a torpedo tank, in particular to a maintenance masonry method for a 320-ton torpedo tank cone working layer. Background technique [0002] Torpedo cans are a common tool used in steelmaking to contain and transport molten iron. The lining refractory material is divided into a permanent layer and a working layer. The working layer will gradually corrode during use, and because the molten slag penetrates into the brick, the internal reaction of the brick will produce a metamorphic layer. Deterioration of the properties of the brick layer causes structural delamination and spalling damage, which is particularly serious on the slag line and bottom of the torpedo tank. In order to ensure the safe operation of the torpedo tank, it is necessary to repair the corroded and weak parts. The current method is to remove the refractory bricks in the working layer of the corroded part and then use refractory bricks to b...

Claims

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Application Information

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IPC IPC(8): B22D41/02
Inventor 邓志方邓品团王宝琪李小云沈继强卢震亚肖邦志张利锋陈琼陈天梁
Owner 武汉钢铁有限公司
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