Prediction system and prediction method for tapping carbon component of 100t direct-current electric arc furnace

A DC electric arc furnace and forecasting system technology, applied in forecasting, electric furnace, steel manufacturing process and other directions, can solve the problems that are not conducive to the control of molten steel purity and the improvement of overall economic benefits, increase the difficulty of deoxidation and production costs, etc. Conducive to molten steel quality control, reducing cost waste and optimizing the effect of the process

Active Publication Date: 2019-10-11
JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the carbon-oxygen balance product, the lower the carbon content, the higher the oxygen content in molten steel, which increases the difficulty of deoxidation and production costs in the subsequent process, which is not conducive to the control of the purity of molten steel and the improvement of overall economic benefits

Method used

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  • Prediction system and prediction method for tapping carbon component of 100t direct-current electric arc furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Tapping carbon content is 0.3% to 0.6%

[0029] Step 1. Enter the collected data into the system and save it.

[0030] Step 2: Calculate the corresponding tapping carbon content under the normal smelting conditions of the electric furnace through the method independently designed and developed:

[0031] Tapped carbon content% = adjustment factor K1*(7.73+1.65*Wc-0.00293*ton steel oxygen supply +0.0503*ton steel power supply), where K1 is between 0.005-0.02, Wc=(molten iron weight×hot metal carbon content + scrap weight × carbon content in scrap) / loading amount, 7.73 is the decarburization constant, 1.65 is the carbon distribution coefficient, 0.00293 is the oxygen supply coefficient, and 0.0503 is the power supply coefficient;

[0032] Step 3: Select the slagging parameters according to the specific situation on site and the phosphorus content requirements of the steel, R=K2*(W Si / 0.4), wherein K2 is between 1.8-2.5; Wsi=(molten iron weight×silicone content in molten...

Embodiment 2

[0036] Tapping carbon content is 0.1% to 0.3%

[0037] Step 1. Enter the collected data into the system and save it.

[0038] Step 2: Calculate the corresponding tapping carbon content under the normal smelting conditions of the electric furnace through the method independently designed and developed:

[0039] Tapped carbon content% = adjustment factor K1*(22.8+0.132Wc-0.0811*ton ​​of steel oxygen supply-0.0177*ton of steel power supply), where K1 is between 0.005-0.02, Wc=(molten iron weight × molten iron carbon content + Scrap weight × carbon content in scrap) / charged amount;

[0040] Step 3: Select the slagging parameters according to the specific situation on site and the phosphorus content requirements of the steel, R=K2*(W Si / 0.4), wherein K2 is between 1.8-2.5, Wsi=(molten iron weight×silicone content of molten iron+scrap weight×silicon content in scrap steel) / loading capacity;

[0041] Step 4: Record and store the actual operating parameters and smelting results of...

Embodiment 3

[0044] Tapping carbon content is less than 0.1%

[0045] Step 1. Enter the collected data into the system and save it.

[0046] Step 2: Calculate the corresponding tapping carbon content under the normal smelting conditions of the electric furnace through the method independently designed and developed:

[0047] Tapped carbon content% = adjustment factor K1*(7.70+0.0922Wc-0.0661*ton ​​of steel oxygen supply +0.00516*ton of steel power supply, where K1 is between 0.005-0.02, Wc=(weight of molten iron x carbon content of molten iron+ Scrap weight × carbon content in scrap) / charged amount;

[0048] Step 3: Select the slagging parameters according to the specific situation on site and the phosphorus content requirements of the steel, R=K2*(W Si / 0.4), wherein K2 is between 1.8-2.5, Wsi=(molten iron weight×silicone content of molten iron+scrap weight×silicon content in scrap steel) / loading capacity;

[0049] Step 4: Record and store the actual operating parameters and smelting r...

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Abstract

The invention relates to a prediction system and a prediction method for tapping carbon components of a 100t direct-current electric arc furnace. The prediction system comprises a data acquisition module, a data storage module, a data analysis module and an operation guidance module, the prediction method comprises the following steps: the data acquisition module acquires main raw material data offurnace smelting; the data storage module is used for storing the acquired data and establishing a database; the data analysis module performs analysis and comparison according to the data provided by the database, and proposes oxygen supply and power supply parameters under different tapping carbon content conditions; and the operation guidance module gives an oxygen supply intensity value and apower supply operation curve according to the data provided by the analysis module and in combination with operation rules and tapping carbon requirements. According to the method, a large amount ofdata is collected in the field production process, database resources are used for supporting accurate logic analysis and judgment, and operation process parameters for different tapping carbon components are deduced according to specific steel grade carbon component requirements.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a system and method for predicting smelting process parameters of a 100t DC electric arc furnace in advance according to the carbon content requirements of tapped steel when an electric furnace smelts different alloy steels. Background technique [0002] In special steel production enterprises, there are different carbon content requirements for different steel grades when tapping from an electric furnace. The carbon content in the electric furnace molten steel mainly comes from the carbon in the hot charging molten iron in the electric furnace, or the carbon in the added pig iron, and the carbon in the cold steel. In the electric furnace smelting process, carbon is oxidized by blowing oxygen to reduce the carbon content and release a large amount of heat. With the increase of oxygen blowing amount, the carbon content showed a decreasing trend. According t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06F17/50C21C5/52
CPCG06Q10/04C21C5/52C21C2300/06G06F30/20Y02P10/20Y02P10/25
Inventor 鲍俭张永启袁杰张旭东高坤张学诚
Owner JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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