Abstract The tapping process of submerged arc furnaces, like the Mn-ferroalloy production process, is when you drain liquid metal and slag from furnace. optimal drained furnace at same rate as it produced, being separated in post-tap hole process. Industrially, this not always case. Based on published articles, paper discusses total that contains consecutive steps flow back electrodes to tap el...

In this research work, deep machine learning-based methods together with a novel data augmentation are developed for predicting flicker, voltage dip, harmonics, and interharmonics originating from highly time-varying electric arc furnace (EAF) currents voltage. The aim the prediction is to counteract both response reaction time delays of active power filters (APFs) specifically designed furnace...

Steel pipes with circular cross-sections are usually used in cooling panels of electric arc furnaces. In the present study pipes with square cross-sections under equivalent conditions were used to obtain more information on the possibility of increasing the heat transfer and cooling efficiency. The results showed increased efficiency of the square pipe compared to the circular cross-section pip...

We describe an optimization application in the context of steel manufacturing, to design and schedule batches for annealing furnaces. Our solution approach uses a two-phase decomposition. The first phase groups together orders into batches using a mixed-integer linear programming model. The second phase assigns the batches to furnaces and schedules them over time, using constraint programming. ...

This paper describes a case study of improving the asset performance of ethylene cracking furnaces through energy saving by Yokogawa’s Asset Performance Diagnostics service, one of the services of Plant Asset Effectiveness Optimization Services, InsightSuiteAE. During regular maintenance of ethylene cracking furnaces, steam and air are supplied to tubes for decoking to burn and remove coke whic...

In steel industry, without consideration of blast furnaces, reheating furnaces are classified the biggest energy consumers. The research of efficient control algorithms permitting less energy consumption has become an important issue for those furnaces. In this paper, a nonlinear Model Predictive Controller (MPC) is designed for a steel slab walking-beam reheating furnace. A numerical nonlinear...

The following issues are considered: the role of hot heel in scrap melting by electric arcs in the furnace freeboard; advantages and disadvantages of furnaces with a single charging and those with a telescoping shell; Specifics of furnace scrap hampering its heating by burners. The possibilities of using different types of burners for scrap heating are analyzed including stationary burners and ...

A statistical model is developed in order to simulate the melt composition electric arc furnaces (EAFs) with respect uncertainties (1) scrap composition, (2) weighing and (3) element distribution factors. The tramp Cu alloying Cr are taken into account. enables simulations of a charge program as well backwards estimations concentrations their variance scrap. In calculation, maximum likelihood m...