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Intermediate frequency smelting furnace building technology

A furnace building and melting furnace technology is applied in the field of intermediate frequency furnace building technology, which can solve the problems of difficult to guarantee furnace building quality, short furnace service life, poor furnace lining tightness, etc., and achieves high furnace lining tightness, low production cost, Reasonable effect of the process

Inactive Publication Date: 2014-10-08
GUANGDONG HENGCHENG TECH
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AI Technical Summary

Problems solved by technology

[0002] The original intermediate frequency furnace lining was built using quartz sand dry-mixing technology. The tightness of the lining is poor, and the service life of the furnace is short. The cost of each furnace is about 12,000 yuan, and the average furnace can be smelted for about 150 furnaces. There are 3 tons of molten iron in each furnace, and the average cost of building a furnace for smelting molten iron per ton is 26.67 yuan. The cost is very high, and the quality of the furnace is difficult to guarantee

Method used

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Embodiment Construction

[0012] An intermediate frequency furnace building process includes the following steps:

[0013] Step 1. Cut the asbestos cloth according to the size of the electric furnace, and prepare the quartz sand mixture according to the size of the intermediate frequency furnace. The quartz sand mixture is stirred by a sand mixer with water, and the degree of mixing is based on kneading into a dough.

[0014] Step 2: Spread the pre-cut asbestos cloth on the coil in the cavity of the furnace body to be built from top to bottom, and level it, and the overlap width is about 50mm. Then, install the stainless steel alarm net, the furnace bottom alarm and the second Layer of asbestos cloth, and the alarm network must be open loop, not to collide with the furnace bottom alarm;

[0015] Step 3: Knotting at the bottom of the furnace: Put the quartz sand mixture into the bottom of the furnace for three times and flatten it with a flat hammer to form a three-layer quartz sand mixture layer;

[0016] Step...

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Abstract

The invention discloses an intermediate frequency smelting furnace building technology. The intermediate frequency smelting furnace building technology includes the following steps that 1 asbestos cloth is tailored in advance according to the size of an electric furnace, and a quartz sand mixture is prepared according to the size of an intermediate frequency furnace; 2 the asbestos cloth tailored in advance is arranged on a coil from top to bottom, wherein the coil is arranged in a cavity of a furnace body to be built; 3 daubing is conducted; 4 furnace baking and sintering are conducted. The intermediate frequency smelting furnace building technology is reasonable in process, simple to operate and low in production cost. After quartz sand and appropriate water are stirred and mixed, the adhesion is high, charging and daubing are convenient and simple, a furnace lining is high in compacting degree, and the service life of the furnace is prolonged. Furnace building is conducted by using the technology, the furnace building cost each time is 15000 RMB, the service life of a furnace built each time is about 430 years, the furnace building cost consumed by fusion per ton iron liquid on average is 11.63 RMB, the furnace building labor cost, the furnace building shut-down cost and the like are not included, and therefore the furnace building technology saves the furnace building cost and lowers the overall casting cost.

Description

Technical field [0001] The invention relates to an intermediate frequency furnace building process. Background technique [0002] The lining of the original intermediate frequency furnace was built using the quartz sand dry-mixing process. The compactness of the lining was poor and the furnace service life was short. The cost of each furnace building was about 12,000 yuan. The average furnace building can smelt about 150 furnaces. With 3 tons of molten iron per furnace, the average cost of furnace construction per ton of molten iron smelting is 26.67 yuan, which is very costly and the quality of furnace construction is difficult to guarantee. Summary of the invention [0003] In order to overcome the shortcomings of the prior art, the present invention provides an intermediate frequency furnace building process [0004] The technical solutions adopted by the present invention to solve its technical problems are: [0005] An intermediate frequency furnace building process includes th...

Claims

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Application Information

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IPC IPC(8): F27D1/16
Inventor 王和迪
Owner GUANGDONG HENGCHENG TECH
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