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Method for improving use efficiency of smelting ladle and smelting ladle with high service life and low material consumption

A ladle and life-span technology, which is applied in the direction of casting molten material containers, metal processing equipment, casting equipment, etc., can solve the problems of resource waste, achieve the effects of reducing waste, reducing the waste of residual bricks, and improving use efficiency

Active Publication Date: 2013-12-25
WUGANG REFRACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to statistics, the residual bricks of the ladle working layer discarded in my country every year are as high as more than one million tons, resulting in a huge waste of resources

Method used

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  • Method for improving use efficiency of smelting ladle and smelting ladle with high service life and low material consumption
  • Method for improving use efficiency of smelting ladle and smelting ladle with high service life and low material consumption
  • Method for improving use efficiency of smelting ladle and smelting ladle with high service life and low material consumption

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Such as Figure 1~2 A smelting ladle with high life and low material consumption is shown, including a ladle shell 1, a permanent layer 2 is built on the inner side of the ladle shell 1, and a circulation-type working layer 3 is poured on the inner wall of the permanent layer 2, and the inner wall of the circulation-type working layer 3 is masonry Consumable working layer 4 is built. Specifically, the permanent layer 2 adopts a bulk density of 0.5±0.2g / cm 3 , Normal temperature compressive strength ≥ 2.0MPa, refractory temperature ≥ 1100 ℃ lightweight refractory brick masonry molding, the thickness of the permanent layer 2 is 65mm. The circulation type working layer 3 adopts a bulk density of 2.7±0.2g / cm 3 1. The corundum refractory castable with a refractory temperature ≥ 1600°C is cast and formed, and the thickness of the circulating working layer 3 is 100mm. The consumable working layer 4 adopts a bulk density of 3.0±0.2g / cm 3 1. High-temperature refractory brick...

Embodiment 2

[0028] The overall structure and method of use of embodiment 2 are basically the same as embodiment 1, except that the permanent layer 2 adopts a bulk density of 1.5 ± 0.2g / cm in embodiment 2 3 , Normal temperature compressive strength ≥ 8.0MPa, refractory temperature ≥ 1100 ℃ lightweight refractory brick masonry molding, the thickness of the permanent layer 2 is 60mm. The circulation type working layer 3 adopts a bulk density of 2.9±0.2g / cm 3 1. The corundum refractory castable with a refractory temperature ≥ 1600°C is cast and formed, and the thickness of the circulating working layer 3 is 120mm. The consumable working layer 4 adopts a bulk density of 3.1±0.2g / cm 3 1. High-temperature refractory bricks with a refractory temperature ≥ 1600°C are built and formed, and the thickness of the consumable working layer 4 is 140mm.

Embodiment 3

[0030] The overall structure and method of use of embodiment 3 are also basically the same as embodiment 1, except that the permanent layer 2 adopts a bulk density of 1.8 ± 0.2g / cm in embodiment 3 3 , Normal temperature compressive strength ≥ 10.0MPa, refractory temperature ≥ 1100 ℃ lightweight refractory brick masonry molding, the thickness of the permanent layer 2 is 100mm. The circulation type working layer 3 adopts a bulk density of 3.1±0.2g / cm 3 1. The corundum refractory castable with a refractory temperature ≥ 1600°C is cast and formed, and the thickness of the circulating working layer 3 is 20mm. The consumable working layer 4 adopts a bulk density of 3.1±0.2g / cm 31. High-temperature refractory bricks with a refractory temperature ≥ 1600°C are built and formed, and the thickness of the consumable working layer 4 is 200mm.

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Abstract

The invention discloses a method for improving the use efficiency of a smelting ladle and the smelting ladle with high service life and low material consumption. The method comprises the following steps: making a working layer of the ladle into an inner layer which is a consumption type working layer and an outer layer which is a circulating type working layer; in the use process of the ladle, when the consumption type working layer is worn till the residue thickness value is 0-20mm, finishing the use of the ladle, removing the residual consumption type working layer, and building a new consumption type working layer for continuous use; and operating repeatedly so, till the designed life of the circulating type working layer is ended, and casting a new circulating type working layer again. The smelting ladle with high service life and low material consumption for realizing the method has the design points that the circulating type working layer with a casting structure and the consumption type working layer with a building structure are arranged. The method disclosed by the invention has the advantages that safe operation and the heat insulating performance of the ladle are ensured, and simultaneously the consumed amount of refractory material for every ton of molten steel and residual-brick discarded amount of the ladle are greatly reduced, so that the operating cost is reduced.

Description

technical field [0001] The invention relates to a steel ladle in the smelting and production of iron and steel or other nonferrous metals, in particular to a method for improving the use efficiency of the smelting ladle and the smelting ladle with high service life and low material consumption. Background technique [0002] At present, the refractory structure used for lining the ladle is mainly divided into two layers, namely the permanent layer and the working layer. The permanent layer is usually not in direct contact with the molten steel, and its thickness is about 80-150mm. In addition, under special circumstances, accidental damage to the working layer will cause the permanent layer to directly contact molten steel, so under normal smelting conditions, it is also required that the permanent layer can withstand the erosion and erosion of molten steel in 1 to 2 heats; the working layer and molten steel In direct contact, the thickness is about 150-240mm. In order to re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/02
Inventor 洪学勤田先明周辉
Owner WUGANG REFRACTORY CO LTD