A method for arranging temperature measuring tubes and temperature control method for producing isostatic graphite in Acheson furnace

Abstract

The invention relates to the technical field of temperature measurement and temperature control in the production process of isostatic graphite, and specifically relates to a method for arranging temperature measuring tubes and a temperature control method for producing isostatic graphite in an Acheson furnace, including one furnace loading → two Secondary furnace installation → installation of furnace core temperature measuring tubes → installation of furnace head and furnace tail temperature measuring tubes. By adjusting and calculating the arrangement distance of furnace core temperature measuring tubes, the side of Acheson furnace where no temperature measuring tubes are installed The overall group spacing between the isostatic graphite blanks is equal to the total group spacing between the isostatic graphite blanks and the temperature measuring tube sleeves on the side where the temperature measuring tube is installed in the Acheson furnace, reducing the Acheson furnace The difference in stacking resistance between the two inner sides balances the uniformity in the Acheson furnace, thereby improving the accuracy of temperature measurement and temperature control.

Description

technical field [0001] The invention relates to the technical field of temperature measurement and temperature control in the production process of isostatic graphite, in particular to a method for arranging temperature measuring tubes and a temperature control method for producing isostatic graphite in an Acheson furnace. Background technique [0002] Acheson furnace is the mainstream graphitization production furnace type in China. In the 1990s, Acheson furnace was mainly used to produce graphite electrodes in China. While Sinosteel Xinxin has completed the localization of isostatic graphite, the furnace type used by Sinosteel Xinxin is also the Acheson furnace. Recently, many domestic companies are producing isostatic graphite. The main foreign isostatic pressure manufacturers include France. Roland, SGL in Germany, Yucca in the United States and Toyo Tanso in Japan, etc. In addition to our company, one or two domestic companies are also producing isostatic graphite. Th...

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Problems solved by technology

[0005] 2. In the graphitization processing plant of SGL in Shanxi, Germany, there should be a temperature measuring tube in the furnace, but there is no temperature measuring tube for the furnace head and tail, which is useful in monitoring the uniformity of the temperature of the entire furnace. a certain deficiency;

[0006] 3. Chengdu Carbon uses the old-fashioned Acheson furnace in the production of isostatic graphite. During the production process, there are no configuration requirements for vent pipes and temperature measuring tubes, and there is no introduction to the temperature measuring tubes and temperature measuring methods.

[0009] 2. Due to the circular shape of the graphite electrode, it cannot be well matched with large-scale products and affects the uniformity of the overall furnace temperature;

[0010] 3. When producing square products, because the graphite electrode itself is round, it affects the furnace loading capacity;

Not conducive to temperature monitoring and measurement;

[0012] 5. Due to the error of temperature measurement and the difference in the configuration of the temperature measuring tube, the temperature measurement will be inaccurate, so that the temperature data will be used to monitor the furnace temperature. There will be a wide range of power fluctuations, and the local situation of dropping from 1000kw to 300kw actually exists.

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