Design and application of digital management system for the sinter raw material plant
To solve the problems existed in iron and steel enterprise material plant, such as complex sources resulting in variety of materials, inaccurate inventory statistics leading to high cost, unpredictable external factors affecting material plant, etc., a digital management system is introduced in this paper. Firstly, the practical requirements and the process of material plant are analyzed. Based on the analysis, the new grid management and material balance methods are developed. Applying these methods, a new management system for material plant is designed, whose system configuration, hardware architecture, data flow, and functions of modules are introduced in details. Such system has been implemented in a large-scale iron and steel corporation sinter raw material plant. The operation results show that, this system has excellent capabilities and a promising application future in industries.
Storage Space Allocation in Material Yards of Integrated Iron and Steel Plants
A nonlinear mathematical model is presented for the storage space allocation problem in material yards of integrated iron and steel plants with the objective function of reducing transportation costs and keeping material components.An improved tabu search algorithm is developed to solve it by using an iterated local search strategy based on random kick moves as a method to escape from local optima.The neighborhood in iterated local search is generated by cyclic exchange moves.The test with 150 random data sets shows that the tabu search with iterated local search strategy achieving global diversification is a fast and effective near optimal algorithm to solve such practical industry problems.
Simulation of continuous behavior using discrete tools: Ore conveyor transport
The modeling of systems mixing discrete and continuous behavior is a challenge for model builders. Sometimes, the continuous part is important, but small near the complex decision making situation involved, and the requirement to learn new tools to model that continuous part is an obstacle that delays the project. This paper presents a technique to model continuous behavior using just discrete modeling elements. The technique was applied to model the conveyor network of a great steelmaking company in Brazil, and the results proved that this technique is valid.