Vacuum refining furnace long-life alloy discharge port
A vacuum refining furnace and long-life technology, which is applied in the field of long-life alloy feeding port of vacuum refining furnace, can solve the problem of redness and deformation of the outer steel shell of the alloy feeding port, affecting the life of the alloy feeding port, poor thermal strain resistance, etc. problems, to achieve the effect of reducing manufacturing costs, highlighting substantive features, and enhancing resistance to deformation
Inactive Publication Date: 2016-04-06
JIGANG GRP
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Problems solved by technology
When the production is discontinuous or the life of the dipping tube is reached, the vacuum tank stops baking, and a large number of cracks appear around the alloy discharge port due to thermal expansion and contraction. At the same time, the large refractory bricks are made by hand and have poor thermal strain resistance. When heated, due to the large space of the alloy discharge port, the brick body cannot recover after being dislocated by the thermal stress, which leads to the brick body being prone to loosening or even falling under the impact of the alloy, resulting in redness and deformation of the outer steel shell of the alloy discharge port, which affects the alloy. Feeding port life
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[0016] In order to clearly illustrate the technical features of the solution, the solution will be described below through a specific implementation mode combined with the accompanying drawings.
[0017] It can be seen from the accompanying drawings that the long-life alloy feeding port of the vacuum refining furnace of this program includes a vacuum chamber 4 made of refractory bricks. The side wall of the vacuum chamber 4 is provided with a feeding channel. The material channel is a circular channel made of multi-layer materials, with a diameter of 350mm. The outermost layer of the material channel is the alloy material discharge port steel shell 3, and the inner wall of the alloy discharge port steel shell 3 is equipped with riveting The fixture 2 and the inner wall of the steel shell 3 of the alloy discharge port are also built with a permanent layer of refractory bricks, and the innermost layer of the discharge channel is the castable 1. The blanking channel of this schem...
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Abstract
The invention provides a technical scheme of a long-life alloy blanking port of a vacuum refining furnace. The vacuum refining furnace comprises a vacuum chamber built of refractory bricks; a blanking channel is formed in the side wall of the vacuum chamber; the blanking channel is a round channel made of a multi-layer material, and the diameter of the blanking channel is 350mm; an alloy blanking port steel shell is arranged at the outermost layer of the wall of the blanking channel; a riveting member is mounted on the inner wall of the alloy blanking port steel shell; permanent-layer refractory bricks are also built on the inner wall of the alloy blanking port steel shell; castable is arranged at the innermost layer of the wall of the blanking channel; and the side wall of the vacuum chamber in contact with the blanking channel is built of novel refractory bricks with reduced thickness and length. According to the scheme, the manufacturing cost is low; the small-size novel refractory bricks are used for replacing large-size refractory bricks, and the spatial height of the part of the blanking channel in contact with the vacuum chamber is reduced, thereby enhancing the stress deformation resistance and prolonging the service life of the vacuum refining furnace.
Description
technical field [0001] The invention relates to a vacuum refining equipment in the iron and steel refining industry, in particular to a long-life alloy feeding port of a vacuum refining furnace. Background technique [0002] The RH vacuum refining furnace is the most advanced refining equipment in the current steel industry, and it is also a necessary equipment for smelting ultra-low carbon and high value-added products. It has become the mainstream refining configuration of major steel plants. According to statistics, by the end of 2012, the domestic RH refining furnace There are more than 120, and the widely used VD refining furnaces, VOD refining furnaces, AOD furnaces, etc. have been gradually eliminated by RH refining furnaces. However, with the rapid development of RH refining furnace technology, some defects of RH refining furnace itself are gradually exposed, and with the different use conditions of each steel plant, the problems exposed by RH furnace are also differ...
Claims
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IPC IPC(8): C21C7/10
Inventor 孙玮郑万任陈军胡勤东李凯玉牛洪波徐学永刘中政高威李君彦刘彪
Owner JIGANG GRP