Steelmaking Batching and Scheduling Optimization
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Solution Overview
Problem
Current steelmaking production scheduling methods rely on manual, subjective experiences, leading to simplified process constraints, incomplete data consideration, and lack of quantitative optimization, resulting in inefficient production, inventory imbalances, and suboptimal product quality.
Innovation Solution
A method of batching and scheduling for steelmaking production with plant-wide process consideration, involving a directed topological network, mathematical modeling, and multi-objective parallel iterative improvement strategies to optimize batch composition, assignment, and sequencing, ensuring even and punctual material distribution across equipment and time dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual scheduling methods based on subjective experience are used, then the scheduling process is simple to implement, but the production efficiency is low and quantitative optimization cannot be achieved
Solution Approach 1:
The patent replaces manual mechanical scheduling with an automated computer-based optimization system that uses mathematical models and algorithms to automatically generate batch compositions and scheduling plans, transforming subjective experience-based scheduling into objective quantitative optimization
Solution Approach 2:
The patent changes the scheduling approach from qualitative manual judgment to quantitative parameter-based optimization by establishing mathematical models that consider multiple parameters including equipment capacity, material properties, energy consumption, and production constraints simultaneously
2Manufacturing precision
If manual scheduling with simplified constraints is used, then the scheduling process is easier to operate, but the manufacturing precision of batch composition and sequencing is insufficient
Solution Approach 1:
The patent replaces manual scheduling operations with an automated computer system that precisely calculates batch compositions and sequencing based on mathematical models, eliminating human subjectivity and achieving high-precision optimization of batch parameters
Solution Approach 2:
The patent incorporates feedback mechanisms where the optimization system continuously evaluates scheduling results against production constraints and objectives, automatically adjusting batch compositions and sequences to achieve precise manufacturing outcomes
3Productivity
If comprehensive plant-wide process consideration is implemented, then the global production efficiency is improved, but the device complexity and data processing requirements increase significantly
Solution Approach 1:
The patent segments the complex plant-wide scheduling problem into manageable components including batch composition optimization, batch assignment to equipment, and sequencing decisions, allowing systematic handling of large-scale optimization while maintaining global coordination
Solution Approach 2:
The patent creates a universal optimization framework that can handle multiple objectives simultaneously including production efficiency, energy consumption, material yield, and equipment utilization, making the system adaptable to various production scenarios without requiring separate specialized systems
4Measurement precision
If quantitative optimization models are used, then the measurement precision of production parameters is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent implements self-service mechanisms where the optimization system automatically collects, processes, and analyzes production data from various sources, reducing the manual burden of data detection and measurement while achieving high-precision parameter optimization
Data Source
AI summary
Provided is a method of batching and scheduling for steelmaking production with plant-wide process consideration, including the steps of: establishing a mathematical model for quantitatively describing the decision problem of batching on steelmaking and continuous casting procedures; starting from the production capacity balance between parallel equipment of the same procedure, and material flow convergence between upstream and downstream procedures, establishing a model for the assignment and sequencing of batches on continuous casting equipment and the time dimension; integrating the batching plan and the production scheduling scheme, issuing the batching plan and the production scheduling scheme integrated to all production and manufacturing units at the steelmaking stage. The present invention improves product quality, increases the material yield, resource utilization rate and equipment operation efficiency, realizes load balance on parallel equipment and smooth material linkage between serial equipment, and reduces the material flow transportation jam, downstream equipment waiting time and inventory.