Cored induction furnace

An induction furnace and inductor technology, used in furnaces, charge materials, crucible furnaces, etc., can solve the problems of poor temperature stability of drawing and casting, fast heat conduction of ramming materials, and large furnace chamber of heat preservation furnace, so as to improve the heat preservation effect and service life. The effect of improving and reducing production time

Pending Publication Date: 2021-05-14
HUBEI JINGYI HIGH PRECISION COPPER PLASTICS & STRIPS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The melting furnace in the double-strand continuous casting production line is a cored induction furnace, and the refractory material of the upper furnace body is CJ-1 refractory castable. Although the service life is nearly one year longer than that of the upper furnace body built with the original composite silicon ramming material time, but the energy consumption per ton is 145KW.h / t higher than that of the original composite silicon ramming material, and the temperature stability of the drawing casting is poor. , the density of the ramming material is 2.28 g / cm3 higher, and the difference between the two is 0.52 g / cm3, which leads to faster heat conduction of the castable material than the ramming material; the second is that the furnace of the melting furnace and the holding furnace are large and the furnace mouth and the bottom of the furnace are inclined The temperature is large, resulting in a large temperature loss

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The composite silicon ramming material 14 has a thickness of 100cm and a height of 500cm at the corresponding position of the furnace mouth 16; a thickness of 80cm at the corresponding position of the core sensor installation opening 17, and a height of 500cm, and a thickness of 80cm at other positions. ㎝, the height is 700㎝;

[0024] The furnace volume of the holding furnace is 0.45 m³, the furnace volume of the melting furnace is 0.58 m³, and the furnace mouth slope is 3 。 , melting bottom slope 6 。 .

[0025] The unit power consumption of the billet in this embodiment is 424KW.h / t, the quality of the billet casting is stable, and the service life of the upper furnace body made of castables is three times higher than that of the upper furnace body made of pure composite silicon ramming materials. times.

Embodiment 2

[0027] Composite silicon ramming material 14 has a thickness of 90cm and a height of 520cm at the position corresponding to the furnace mouth 16; a thickness of 70cm at the position corresponding to the core sensor installation opening 17, and a height of 550cm, and a thickness of 60cm at other positions. ㎝, the height is 750㎝;

[0028] The furnace volume of the holding furnace is 0.4 m³, the furnace volume of the melting furnace is 0.55 m³, and the furnace mouth slope is 3.5 。 , melting bottom slope 5 。 .

[0029] The unit power consumption of the billet in this embodiment is 420KW.h / t, the casting quality of the billet is stable, and the service life of the upper furnace body made of castable is three times higher than that of the upper furnace body made of pure composite silicon ramming material. times,

Embodiment 3

[0031] Composite silicon ramming material 14 has a thickness of 92cm and a height of 550cm at the position corresponding to the furnace mouth 16; a thickness of 73cm at the position corresponding to the core sensor installation opening 17, and a height of 520cm, and a thickness of 70cm at other positions. cm, the height is 730 cm;

[0032] The furnace volume of the holding furnace is 0.5 m³, the furnace volume of the melting furnace is 0.62 m³, and the furnace mouth slope is 4 。 , melting bottom slope 7 。 .

[0033] The unit power consumption of the billet in this embodiment is 422KW.h / t, the casting quality of the billet is stable, and the service life of the upper furnace body made of castable is three times higher than that of the upper furnace body made of pure composite silicon ramming material. times,

[0034] It is proved by experiments that the above-mentioned measures have been taken to achieve the expected purpose, and the unit power consumption with billet has dr...

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Abstract

The invention relates to a cored induction furnace. The cored induction furnace comprises a furnace body, a cored inductor and a crystallizer frame, wherein the furnace body comprises a steel plate furnace wall, asbestos felt, insulating bricks and a refractory castable layer from outside to inside, and openings are formed in the lower part and the bottom furnace wall of the furnace body; and composite siliceous ramming materials are filled between the insulating bricks and the refractory material pouring layer on the periphery of the upper furnace wall of the furnace body. The periphery of the upper furnace wall of the furnace body is filled with the composite siliceous ramming materials, so that the speed of conducting heat of a hearth to the outside of the furnace wall is reduced, the heat preservation effect is improved, the castable is prevented from cracking, the unit power consumption of a strip billet is low, the pull casting quality is stable, the service life is prolonged, the production time occupied by furnace ramming every time is greatly shortened, the labor intensity of workers is reduced, and the labor productivity is improved.

Description

technical field [0001] The invention relates to a cored induction furnace. Background technique [0002] The melting furnace in the double-strand continuous casting production line is a cored induction furnace, and the refractory material of the upper furnace body is CJ-1 refractory castable. Although the service life is nearly one year longer than that of the upper furnace body built with the original composite silicon ramming material time, but the energy consumption per ton is 145KW.h / t higher than that of the original composite silicon ramming material, and the temperature stability of the drawing casting is poor. , the density of the ramming material is 2.28 g / cm3 higher, and the difference between the two is 0.52 g / cm3, which leads to faster heat conduction of the castable material than the ramming material; the second is that the furnace of the melting furnace and the holding furnace are large and the furnace mouth and the bottom of the furnace are inclined The highe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B14/06F27B14/08F27D1/10
CPCF27B14/065F27B14/08F27D1/10F27B2014/0843F27M2003/13
Inventor 周吉全冯立铭王榜华王金亮陈江华
Owner HUBEI JINGYI HIGH PRECISION COPPER PLASTICS & STRIPS CO LTD
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