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Optimization method of ladle scheduling problem

A scheduling problem and optimization method technology, applied in the direction of instruments, manufacturing computing systems, data processing applications, etc., can solve problems such as repair and adjustment procedures considering thermal energy loss from a global perspective

Inactive Publication Date: 2018-05-11
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

According to the experience of experts, the ladle selection rules were extracted, and the scholars developed a ladle scheduling simulation system based on the ladle selection rules and the equipment priority mixed strategy. Through the simulation technology, the furnaces in the steelmaking-continuous casting scheduling plan were equipped with ladles, taking into account the loading Ladle and empty ladle travel paths, but does not take into account heat loss and ladle repair adjustment procedures from a global perspective

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  • Optimization method of ladle scheduling problem
  • Optimization method of ladle scheduling problem
  • Optimization method of ladle scheduling problem

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Embodiment Construction

[0030] The invention provides an optimization method for a ladle scheduling problem. Problem introduction: In steelmaking-continuous casting production, molten steel sequentially passes through steelmaking, refining and continuous casting production processes according to the tapping plan. The time for the ladle to serve a furnace of molten steel is from the beginning of tapping in the converter or electric furnace to the end of casting. After pouring, the ladle is sent to the corresponding slag dumping station for slag dumping, and then sent to the turntable, where it is repaired by sand blowing, water outlet replacement and slide plate replacement. The processed empty ladle can be directly sent to the converter or electric furnace to receive molten steel, or to the The fast baking position is waiting to receive molten steel, or go to the baking position for baking to prepare to receive molten steel. figure 1 The turnover process of the ladle in the steelmaking-continuous cas...

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Abstract

An optimization method of a ladle scheduling problem comprises the steps of: a coding mode of a solution, generation of an initial solution, generation of an initial reference set; updating of the reference set; subset generation method; and combination of operators. The optimization method of the ladle scheduling problem is a method of making a ladle scheduling plan combining liquid steel processing time and having controllability, and is an automatic method for fine regulation of a steelmaking-continuous casting scheduling plan. The method properly regulate the process time of liquid steel in a steel-making operation to improve the ladle turnover rate and reduce the heat energy loss of a service process on the premise of ensuring the ladle service liquid steel satisfaction (liquid steelquality).

Description

Technical field: [0001] The invention belongs to the field of production automation, and specifically relates to formulating an optimization algorithm for ladle scheduling on the premise that the steelmaking-continuous casting scheduling plan has been generated, providing a scheduling schedule for the ladle serving molten steel process, and making a steelmaking-continuous casting scheduling plan An automatic method for fine-tuning. Background technique: [0002] In the production of steelmaking-continuous casting, the ladle is accompanied from the time when the molten steel is tapped in the converter or electric furnace until the end of the casting in the continuous casting stage. When the high-temperature molten steel is waiting for the ladle, the temperature drops and heat energy is lost; improving the turnover efficiency of the ladle and reducing the temperature drop time of the ladle can correspondingly reduce the baking preparation time of the ladle. Therefore, for a g...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/04
CPCG06Q10/04G06Q10/06312G06Q50/04Y02P90/30
Inventor 谭园园
Owner SHENYANG POLYTECHNIC UNIV
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