Steel ladle wire feeding auxiliary device and steel ladle wire feeding method

An auxiliary device and ladle technology, which is applied in the field of refining equipment and technology outside the steelmaking furnace, can solve the problems of affecting the processing time of molten steel, low wire yield, and poor wire feeding conditions, so as to improve the metallurgical reaction speed and increase the yield. Yield, the effect of preventing damage to human health

Active Publication Date: 2017-12-08
BAOSHAN IRON & STEEL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the low wire yield, poor wire feeding conditions caused by splashing and calcium vapor escape in the ladle wire feeding auxiliary device and ladle wire feeding method in the prior art, a large amount of waste of wire and affecting the p

Method used

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  • Steel ladle wire feeding auxiliary device and steel ladle wire feeding method

Examples

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Example Embodiment

[0043] Example 1: Feeding silicon-calcium wire for smelting pipeline steel in a 300-ton converter steel plant.

[0044] A factory in a 300-ton converter steel plant RH station modified the original simple wire feeding machine according to the ladle wire feeding auxiliary device and ladle wire feeding method of the present invention, and smelted X70 pipeline steel, which requires calcium treatment , The original wire feeding device feeds 500 meters of Ф16mm cored wire, which contains Si-28%Ca alloy powder, 350g per meter of alloy, the original operation totals about 175kg of alloy powder, which contains 49kg of calcium, after the operation is over The calcium content in molten steel fluctuates between 15-45ppm, about 21ppm on average, and the calcium recovery rate is 13%.

[0045] After the transformation, the ladle wire feeding auxiliary device A of the present invention is added, and the covering area of ​​the immersion cover A2 of the ladle wire feeding auxiliary device is 1000×1...

Example Embodiment

[0047] Example 2: Magnesium feeding wire for smelting low-carbon aluminum killed steel in a 300-ton converter steel plant.

[0048] On the same RH, the low-carbon aluminum killed steel is fed with magnesium cored wire. The outside of the magnesium cored wire is a steel tape shell, and the inside is wrapped with Ф12.8Al-18% Mg alloy wire. The alloy is 322 grams per meter, equivalent to metal 58 grams of magnesium. The actual feeding amount of the original process is 500 meters, and the residual magnesium content in the steel is 18 ppm, which is equivalent to a yield of 19%.

[0049] After adopting the ladle wire feeding auxiliary device and the ladle wire feeding method of the present invention, the flow rate of argon blowing at the bottom of the ladle is 160 liters / min. After feeding the wire for 500 meters, the residual magnesium content in the steel is measured to be 23 ppm, which is equivalent to a yield of 24%.

[0050] Through the above description and embodiments, the ladle wi...

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Abstract

The invention provides a steel ladle wire feeding auxiliary device and a steel ladle wire feeding method. The steel ladle wire feeding auxiliary device comprises a steel ladle and a wire-feeder arranged on a working platform. A metal wire lead-out tube of the wire-feeder is connected with the steel ladle wire feeding auxiliary device which is arranged in an ascending and descending manner, metal wires are delivered into the steel ladle wire feeding auxiliary device by the metal wire lead-out tube, and then the metal wires are directly injected into the liquid steel in the steel ladle by the steel ladle wire feeding auxiliary device. The working platform is provided with a ventilating and dedusting device with a vacuumizing unit, and the ventilating and dedusting device is connected with the inner portion of the steel ladle wire feeding auxiliary device and is in pipeline communication with the steel ladle wire feeding auxiliary device. By means of the steel ladle wire feeding auxiliary device and the steel ladle wire feeding method, the metal wires are directly fed into the liquid steel, the phenomena that the wires are melt before entering into the liquid steel, and the wires cannot enter the liquid steel due to the fact that steel slag is too thick are avoided, and the wire yield rate is increased; gases and smoke dust are discharged into the ventilating and dedusting device, and the environmental pollution is reduced; and the metallurgical reaction conditions of the liquid steel in the steel ladle are changed by the vacuumizing unit, part of the metallurgical reaction velocity is increased, the oxidation loss of useful elements is prevented, and the alloy yield rate is increased.

Description

technical field [0001] The invention relates to the refining equipment outside the steelmaking furnace and the technical field in the iron and steel production industry, in particular to a ladle wire feeding auxiliary device and a ladle wire feeding method for directly feeding wire into molten steel, which can effectively improve wire feeding yield. yield and reduce environmental pollution. Background technique [0002] Modern steelmaking technology smelts molten iron into molten steel through a series of operations and transports it to the continuous casting machine. The molten steel passes through the continuous casting machine to produce qualified billets. Extra-furnace refining is an important part of the steelmaking process. It acts as a buffer between the continuous casting machine and the primary furnace (converter or electric furnace), and provides molten steel with suitable temperature, composition and time to the continuous casting machine. [0003] In the above-m...

Claims

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Application Information

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IPC IPC(8): C21C7/00
CPCC21C7/0056
Inventor 郑庆马志刚张胜军刘安孔亚飞崔立程方莉莉
Owner BAOSHAN IRON & STEEL CO LTD
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