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Digital roasting start method and device for metallurgical furnace

A roasting start-up and roasting device technology, applied in the field of aluminum electrolysis, can solve the problems of over roasting and under roasting of the inner lining in the kiln, achieve uniform heat supply, and solve the effects of under roasting or over roasting

Inactive Publication Date: 2016-11-16
GUIYANG AL-MG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for starting digital roasting of metallurgical kilns, so as to solve technical problems such as under roasting or over roasting of the lining in the kiln existing in the existing roasting starting methods

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  • Digital roasting start method and device for metallurgical furnace
  • Digital roasting start method and device for metallurgical furnace
  • Digital roasting start method and device for metallurgical furnace

Examples

Experimental program
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Embodiment 1

[0017] Such as figure 1 As shown, the digital roasting method of a certain metallurgical kiln is as follows: when designing a metallurgical kiln, analyze the heat balance process of the kiln lining when roasting, plan the isothermal zone 5, and determine the best temperature that can detect the temperature of each isothermal zone 5 Temperature measurement position. During construction, thermocouple casing 1 is made of high-temperature resistant and wear-resistant rigid material, which is embedded in the inner lining at a certain position. When roasting is started, thermocouple 2 is inserted to detect the temperature of each isothermal zone 5. After roasting is completed Take out thermocouple 2.

[0018] Such as figure 2 As shown, during roasting, the thermocouple 2 is inserted into the thermocouple casing 1 to detect the temperature of the side and bottom of the kiln lining in real time, and the data is transmitted to the temperature control system 3 and the roasting expert ...

Embodiment 2

[0022] Such as figure 1 As shown, a specific implementation method of heating the surface of the cathode of the electrolytic cell 6 and the underside of the cathode carbon block to 900° C. and 750° C. to start firing is given below. Similarly, the device system includes a thermocouple well 1 , a thermocouple 2 , a temperature control system 3 and a roasting expert system 4 . Wherein, thermocouple 2 is arranged in thermocouple sleeve 1 and is arranged in five isothermal zones 5 delineated in electrolytic cell 6; During roasting, thermocouple 2 inserts casing 1 real-time detection electrolytic cell 6 lining side and Bottom temperature, and transmit the data to the temperature control system 3 and the roasting expert system 4 in real time, adjust the heat supply in the electrolytic tank 6 through the temperature control system 3, realize the uniformity of the lining roasting temperature, and ensure the roasting quality; through the roasting expert system 4 Timely reasoning and j...

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Abstract

The invention discloses a digital roasting start method and device for a metallurgical furnace. The device comprises a thermowell (1), a thermocouple (2), a temperature control system (3) and a roasting expert system (4). During roasting, the thermocouple (2) is inserted in the thermowell (1) to detect the temperatures of the side and the bottom of a liner of the furnace in real time and transmits the data to the temperature control system (3) and the roasting expert system (4) in real time; heat supplying to the furnace is adjusted through the temperature control system (3), uniformity of the roasting temperature of the liner is achieved, and the roasting quality is ensured; and the roasting expert system (4) is used for reasoning and judging the material coking effect of the liner and whether the material coking effect of the liner meets the preset roasting target in time and deciding whether to carry out roasting continuously or stop roasting, and the purposes of energy saving, consumption reduction, emission reduction and roasting are achieved. By means of the digital roasting start method and device for the metallurgical furnace, the technical problem of under-roasting or over-roasting of a liner of the metallurgical furnace can be solved.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolysis, in particular to a method and device for starting digital roasting of a metallurgical furnace. Background technique [0002] Roasting start-up is an important task in the production of metallurgical furnaces, and the quality of lining roasting directly affects the life of the furnace and metallurgical production. Traditional metallurgical furnaces do not detect the temperature of the roasting process and its thermal field distribution in real time when the roasting starts, but only perform roasting according to the process parameters and curves determined in advance, not only the time and temperature are fixed, but also the roasting process does not follow The temperature profile regulates the gas supply and electricity load. In view of possible changes in on-site production conditions, material sources, and ambient temperature, the traditional roasting start-up may present the fol...

Claims

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Application Information

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IPC IPC(8): C25C3/08C25C3/20
CPCC25C3/08C25C3/20
Inventor 曹斌杨朝红陈杰
Owner GUIYANG AL-MG DESIGN & RES INST