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Splash-proof tube (Vagcor)

A technology of high silicon oxygen and molten steel, applied in the direction of using electromagnetic means, instruments, thermometers, etc., can solve problems such as short measurement time, low accuracy, and molten steel splashing

Inactive Publication Date: 2008-07-23
德清县延炜耐火材料厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a method that can prolong the temperature measurement time to 5 to solve the shortcoming of low accuracy caused by too short measurement time and splashing of molten steel in the prior art when metal thermocouples are used to spot-measure the molten steel temperature. More than seconds, thermocouple protection device to prevent molten steel from splashing

Method used

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Embodiment Construction

[0005] Using burnt gems as the main raw material, Al in the ore 2 o 3 The content is 52%, Fe 2 o 3 The content is 0.7%. Put the ore into the three-phase electric arc furnace until it melts into a liquid and flows out of the furnace mouth to form a scorching stream. The air pressure is between 0.4-0.6Mpa, and the compressed air is injected from the micropores of the V-shaped nozzle through the air pipe to disperse the stream. The stream is scattered into filaments, forming white fibrous high-silica cotton 1m away from the furnace mouth. Use grade A high-silica cotton that is more than 3m away from the outlet of the air duct and at a distance of 0.5 on both sides of the air duct, and then use 90%-98% of high-silica cotton and 2-10% of binder (the composition of the binder is: SiO 2 30%, Na 2 o0.35%, and the rest is water), stir evenly in a pool with a water storage capacity of 3000Kg, the stirring time is 8-17 minutes, and the allowable error of batching measurement is ±0....

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Abstract

The invention discloses a production technique of liquid steel temperature sensing and splash shielding tube (high silica oxygen), which the key technics is that put ores with a Al2O3 content of 52 percents and a Fe2O3 content of 0.7 percent, into triple phase arc furnace, till the ores all melt down into liquor flowing out of the furnace forming a glaring flow, compressed air of 0.4 to 0.6 MPa is blown out of the V micro nozzles through the air pipe tearing the flow into threads which forms with fiber high silica oxygen cotton 1 meter away from the furnace mouth, rabble the mixture with 90 to 98 percents of high silica oxygen cotton and 2 to 10 percents of adhesive for 8 to 17 minutes in a pool with water capacity of 3000 Kg, press the mixed cotton with the presser into determined shape and size and bake in a baker with highest temperature of 230 plus or minus 10 deg. C for certain period to get the final product.

Description

technical field [0001] The invention relates to a fire-resistant and heat-insulating material product, in particular to a high silicon oxygen splash-proof tube for measuring the temperature of molten steel. Background technique [0002] Steelworks often need to measure the temperature of molten steel during production. Because temperature measurement is directly related to the quality of the product, it is related to the production cost. In the molten state, the temperature of steel and iron is above 1200°C. In order to achieve the required measurement accuracy, contact-type metal thermocouple thermometers are commonly used for measurement. This method is simple and reliable, and can achieve the required measurement value. But because the molten steel temperature is too high, the measurement time of the prior art can only reach 2-3 seconds, so the accuracy of temperature measurement is not very high. Moreover, the thermal shock generated by the thermocouple at normal tem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K1/08G01K7/02C04B35/10C04B35/657C03B37/06
Inventor 姚志刚
Owner 德清县延炜耐火材料厂