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Variable-diameter vacuum tank structure for VD/VOD furnace

A technology of vacuum tank and variable-diameter type, which is applied in the field of variable-diameter vacuum tank structure for VD/VOD furnaces. It can solve the problem of difficult placement of the slag tray on the bottom of the circular tank, difficulty in removing slag from the straight-tube vacuum tank, and steel breakout treatment. Low efficiency and other problems, to achieve the effect of simple structure, convenient slag cleaning and low manufacturing cost

Active Publication Date: 2018-02-23
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the head structure is used, it is difficult to place multiple slag trays on the bottom of the round tank
[0007] Obviously, straight vacuum tanks are difficult to remove slag, have low efficiency in handling steel breakouts, are not easy to maintain, and have poor safety

Method used

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  • Variable-diameter vacuum tank structure for VD/VOD furnace
  • Variable-diameter vacuum tank structure for VD/VOD furnace
  • Variable-diameter vacuum tank structure for VD/VOD furnace

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Embodiment Construction

[0024] The present invention will be described in detail below with reference to the accompanying drawings.

[0025] refer to figure 1 figure 2 , a variable-diameter vacuum tank structure for a VD / VOD furnace. The structure of the vacuum tank 1 adopts a variable-diameter structure. The top of the vacuum tank 1 is equipped with a flange and a sealing ring 110, and the bottom has an exhaust hole 111. Two fixed support frames 122 are arranged on the inner wall slope of the cone tube 12 of the vacuum tank 1, and a ladle support seat 121 is inserted inside each fixed support frame 122. There is a central hole, and the wall is obliquely opened with a maintenance manhole 123. The vacuum tank 1 is installed on a fixed foundation or a mobile foundation by relying on the center hole of the support 124 . A slag receiving tray 131 is housed on the upper bracket 132 of the small diameter straight cylinder 13 of the vacuum tank 1, and a diversion hole 133 is provided at the bottom. Fo...

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Abstract

A variable-diameter vacuum tank structure for a VD / VOD furnace comprises a vacuum tank which is of a variable diameter structure; the upper section of the vacuum tank is a large-opening-diameter straight barrel, the middle section of the vacuum tank is a conical barrel, the lower end of the vacuum tank is a small-opening-diameter straight barrel, and the large-opening-diameter straight barrel, theconical barrel and the small-opening-diameter straight barrel are connected in sequence; a flange and a sealing ring are installed at the top of the vacuum tank; the lower portion of the vacuum tankis provided with an air outlet; and an upper bracket is arranged on the small-opening-diameter straight barrel and provided with a slag receiving pan, a flow guide hole is formed in the lower end of the upper bracket, a lifting hook of a crane is put downwards into the vacuum tank and then directly hitches an open lifting hook in the center of the slag receiving pan, thus, steel slag is lifted outof the vacuum tank, and another new slag receiving pan can be lifted into the vacuum tank again. According to the variable-diameter vacuum tank structure, a straight barrel structure of the vacuum tank is changed into the variable diameter structure so that the slag removing efficiency, bleed-out treatment efficiency and maintenance safety of the vacuum tank can be improved.

Description

technical field [0001] The invention relates to the technical field of metallurgical equipment, in particular to a variable-diameter vacuum tank structure for a VD / VOD furnace. Background technique [0002] At present, the vacuum tanks of VD or VOD furnaces are generally installed in a fixed manner, which determines that the existing vacuum tanks are all straight cylinder structures. [0003] As is known, a plurality of slag receiving pans are arranged inside the straight cylinder type vacuum tank for containing molten steel waste slag during steelmaking. Molten steel waste slag overflows very frequently during steelmaking in VD or VOD furnaces. When there is too much accumulation, the ladle cannot be seated in the vacuum tank. Due to the limited space in the tank, multiple slag trays are inconvenient for lifting and transportation, which will seriously reduce production efficiency. [0004] As is known, a plurality of leakout trays or a sidewall molten steel diversion hol...

Claims

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Application Information

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IPC IPC(8): C21B3/10C21C7/10
CPCC21B3/10C21C7/10Y02P10/20
Inventor 吴建龙陈亚文任彤方杞青马正锋曹海玲朱浪涛刘蒙
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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