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Intelligent optimizing set during process of shaft roasting

A technology of intelligent optimization and setting methods, which is applied in the direction of furnaces, vertical furnaces, furnace types, etc., can solve the problems of waste of raw materials, metal recovery rate, difficulty in guaranteeing and reducing roasting quality, etc.

Inactive Publication Date: 2006-03-15
NORTHEASTERN UNIV
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Problems solved by technology

However, it is difficult or impossible to set the parameters artificially to make the shaft furnace operate in the best state, it is difficult to guarantee the roasting quality, and it is difficult to achieve a high recovery rate of the magnetic separation tube, resulting in waste of raw materials and metal recovery rate. reduction of

Method used

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  • Intelligent optimizing set during process of shaft roasting
  • Intelligent optimizing set during process of shaft roasting
  • Intelligent optimizing set during process of shaft roasting

Examples

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Embodiment Construction

[0104] Taking the shaft furnace magnetization roasting section of a large-scale iron ore dressing plant as an example, the main iron ore of the dressing plant is pyrite and limonite, and the gangue is mainly barite, quartz, jasper and iron dolomite. The actual iron grade of the ore is 33%. The purpose of the shaft furnace roasting is to convert the weakly magnetic hematite (Fe 2 o 3 ) reduced to strong magnetic magnetite (Fe 3 o 4 ), so that it can be sorted on a magnetic separator with low magnetic field strength for sorting out strong magnetic minerals, so as to improve the metal recovery rate.

[0105] Install the following measuring instruments according to the requirements of this manual, including:

[0106] Four NiCrSi-NiSiMg thermocouples for online measurement of combustion chamber temperature T RS ;

[0107] A Verabar flowmeter for online measurement of heating gas flow L JR ;

[0108] A Verabar flowmeter for online measurement of the heating air flow L KQ ; ...

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Abstract

The method comprises the input of boundary condition, the definition of magnetic tube recovery expected value, the real-time process data acquisition of the shaft roasting system, the parameter determination based on the case inference, the feed correction based on the magnetic tube recovery ratio prediction, the feedback correction based on the magnetic tube recovery ratio analysis value, the case storage and maintain and other steps. In the method, the on-line process data provided by the routine computer control system and the routine instrumentation is combined in the hand sampling data to set up the intelligent optimization setting model of the shaft roasting system main technical parameter based on the case analysis, so as to realize the optimization control of the shaft roasting system being gearing to the needs of the production target.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to an optimization setting method for a shaft furnace roasting process. Background technique [0002] In the iron ore beneficiation production process, the massive weak magnetic minerals are reduced to strong magnetic minerals (Fe 3 o 4 ) process, called magnetization roasting. The equipment used in the roasting process is a shaft furnace roasting system. The process index to measure the roasting quality of the shaft furnace is the recovery rate of the magnetic separation tube. The three main process parameters that affect the operation of the shaft furnace and the roasting quality are the temperature of the combustion chamber, the flow rate of the reducing gas and the time of the unloading machine. At present, the control method of the conventional shaft furnace roasting system can only realize the basic loop control of the temperature of the combustion ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B1/26
Inventor 柴天佑田雪咏严爱军吴峰华岳恒丁进良
Owner NORTHEASTERN UNIV
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