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Converter smelting endpoint molten steel carbon and temperature control system and method thereof

A converter smelting, molten steel temperature technology, applied in the temperature control system, converter smelting terminal molten steel carbon field

Active Publication Date: 2010-09-29
HEBEI SHOUGANG QIAN AN IRON & STEEL CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a converter smelting end point molten steel carbon and temperature control system and its method, which solves the disadvantages of using sub-lance or exhaust gas analysis alone at present, and improves the carbon content and temperature accuracy of the end point of converter steelmaking molten steel; it is suitable for various enterprises Requirements for high, medium and low carbon steel products produced by large and medium-sized converters

Method used

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  • Converter smelting endpoint molten steel carbon and temperature control system and method thereof
  • Converter smelting endpoint molten steel carbon and temperature control system and method thereof
  • Converter smelting endpoint molten steel carbon and temperature control system and method thereof

Examples

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Effect test

Embodiment 1

[0099] Example 1: In the production process of a 210-ton converter, the sub-gun T measurement and mass spectrometer exhaust gas analysis are used.

[0100] Main raw materials: 215.24t of molten iron, 19.84t of scrap steel;

[0101] Batches and quantities of feeding materials in blowing process

[0102] One batch: lime 12412kg lightly burned dolomite 2899kg ore 2268kg,

[0103] The second batch: lime 2110kg lightly burned dolomite 1303kg ore 1251kg,

[0104] Three batches: fluorite 412kg ore 2809kg,

[0105] Subgun T measurement: temperature 1597°C.

[0106] According to this control method, the temperature measured by the sub-gun will be used as the starting point for temperature calculation, and the exhaust gas analysis data of the mass spectrometer will be used as the basis for calculating the carbon of molten steel. end system.

[0107] End of blowing: oxygen content 10520Nm3 exhaust gas components CO-0.28%, CO 2 -12.5%, O 2 -5.5%, N 2 -80.6% Ar -0.04%.

[0108] Ca...

Embodiment 2

[0111] Example 2: In the production process of a 210-ton converter, the sub-lance TSC is used for measurement.

[0112] Main raw materials: molten iron 211.28, scrap steel 26.44,

[0113] Batches and quantities of feeding materials in blowing process

[0114] Batch: lime 8733kg lightly burned dolomite 2558kg ore 1728kg,

[0115] The second batch: lime 3838kg lightly burned dolomite 1153kg ore 829kg,

[0116] Three batches: 502kg fluorite, 224kg ore,

[0117] Subgun TSC measurement: temperature 1630°C; carbon 0.486%,

[0118] According to this control method, the temperature measured by the sub-lance and the carbon content of molten steel will be used as the starting point for calculation. The molten steel temperature and carbon prediction module will calculate cyclically based on the actual smelting process data and display the results in the client system.

[0119] End of blowing: oxygen content 10169Nm3,

[0120] Calculated temperature: 1671°C; Calculated carbon content...

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Abstract

The invention discloses a converter smelting endpoint molten steel carbon and temperature control system and a method thereof, and belongs to the technical field of converter steelmaking automation control. The converter smelting endpoint molten steel carbon and temperature control system comprises hardware equipment and a software processing module, and is characterized in that: the hardware equipment comprises converter sublance measuring equipment and converter exhaust gas analysis equipment; the software processing module comprises a converter production process data acquisition module, a converter smelting endpoint carbon calculation module, a converter smelting endpoint temperature calculation module, and an information display module; the software processing module is operated on a computer; and the hardware equipment and the software module are connected with a converter production process database through an Ethernet to realize data interaction. The control system and the method thereof have the advantages of accurately controlling the converter smelting endpoint molten steel carbon content and the molten steel temperature, along with stable operation, cost conservation, and wide application range.

Description

technical field [0001] The invention belongs to the technical field of automatic control of converter steelmaking, and in particular provides a converter smelting end point molten steel carbon and temperature control system and method thereof. It is suitable for large and medium-sized converters to produce various high, medium and low carbon steel products. Background technique [0002] The main purpose of converter steelmaking is decarburization and temperature rise. Accurately controlling the carbon content and temperature of molten steel at the end of converter smelting is the core goal of converter smelting operations. In the past, due to the influence of converter volume and automation level, the judgment of converter end point was mainly based on manual experience, which could not meet the needs of enterprise survival and development in terms of accuracy, smelting cycle, production rhythm and other aspects. With the continuous improvement of enterprises' demand for co...

Claims

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Application Information

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IPC IPC(8): C21C5/30
Inventor 胡丕俊蒋学军邱成国杨伟强李海森
Owner HEBEI SHOUGANG QIAN AN IRON & STEEL CO LTD
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