Table of Contents
ISRN Metallurgy
Volume 2013 (2013), Article ID 960210, 7 pages
http://dx.doi.org/10.1155/2013/960210
Research Article

Drain Rate and Liquid Level Simulation in Blast Furnace Hearth Using Plant Data

1Blast Furnace Department, Jindal Steel & Power Ltd., Raigarh, Chhattisgarh 496001, India
2Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India

Received 29 May 2013; Accepted 2 July 2013

Academic Editors: M. Carboneras, P. Markovsky, and A. Pinkerton

Copyright © 2013 Hemant Upadhyay and T. K. Kundu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Proper understanding and control of drainage of hot metal and slag from hearth are essential for a stable and efficient blast furnace operation. Various operational problems like irregular casting intervals, damage to lining, low blast intake, furnace pressurization, and so forth are normally encountered when liquid levels in the hearth exceed a critical limit where hearth coke and deadman start to float. Estimation of drain rate and liquid level in hearth needs to be simulated based on the operating parameters available as carrying out any direct measurement is extremely difficult due to the hostile conditions. Here, a mathematical model has been developed to simulate real-time liquid level and drainage behavior of the furnace hearth. Based on the computed drainage rate, production rate, and mass balance, the model is able to predict occurrence of slag-out time and cast close time which are in good agreement with the plant data.