GEP-based Modeling for Predicting Sponge Iron Metallization in Persian Direct Reduction (PERED) Method

Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_JMATPR-9-4_006

تاریخ نمایه سازی: 4 تیر 1401

Abstract:

 The Persian direct reduction method (PERED) is a suitable method for producing sponge iron on an industrial scale. The challenge of all sponge iron production plants is to supply sponge iron with suitable metallization to steel factories. Accordingly, determining and adjusting the various parameters affecting metallization in each plant is necessary to produce the appropriate amount and quality of sponge iron. In this study, first, the effects of output rate, process flow, water- steam flow rate, bustle temperature, bustle CH۴ level, CO۲ reform, average pellet size (PIDa), pellet strength (CCS), process gas water temperature, and furnace bed average temperature on spongy iron metallization were investigated. Then, an attempt was made to model the sponge iron grade produced by the PERED method using the Gene Expression Programming (GEP) software. To carry out modeling, data on the affecting variables of metallization were collected for ۵۸ days. The best R۲ values for the training and testing sets were ۰.۹۷۴ and ۰.۲۷ with a low error rate for both (۰.۰۴۷ and ۰.۳۷۶ in RMSE and ۰.۰۰۱ and ۰.۱۴۱ in MSE, respectively. The results of the sensitivity test indicated that CO۲ reform gas, bustle CH۴ level, and average pellet size had the most significant effect on metallization.

Keywords:

PERED , Direct Reduced Iron (DRI) , Gene Expression Programming (GEP) , Mathematical Modeling

Authors

Mehdi Firouzi

Research & Development, Sirjan Jahan Steel Complex (SJSCO), Sirjan, Iran; Baft Steel Complex, Baft, Iran

Mojtaba Sadeghi Gogheri

Research & Development, Sirjan Jahan Steel Complex (SJSCO), Sirjan, Iran; Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Mojtaba Firouzi

Department of Computer Engineering, Qom university of Technology, Qom, Iran

Masoud Kasiri-Asgarani

Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Hamid Reza Bakhsheshi-Rad

Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

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