Efficient way to use of non-coking coals in non-recovery coke making process

¹ Researcher, Raw Material & Coke Making Research, R&D, Tata Steel Ltd., 831001 Jamshedpur, Jharkhand, India
e-mail: hp.tiwari@tatasteel.com
² Chief, Raw Material & Coke Making Research, R&D, Tata Steel Ltd., 831001 Jamshedpur, Jharkhand, India
e-mail: pkbanerjee@tatasteel.com
³ Head, Department of Chemical Engineering, ISM, Dhanbad, India
e-mail: vksaxenaism@hotmail.com
⁴ Principal Researcher, Raw Material & Coke Making Research, R&D, Tata Steel Ltd., 831001 Jamshedpur, Jharkhand, India
e-mail: rsharma@tatasteel.com
⁵ Chief, Coke Plants, Tata Steel Ltd., 831001 Jamshedpur, Jharkhand, India
e-mail: skhaldar@tatasteel.com
⁶ GM, Hooghly Met Coke (HMC) Division, Tata Steel Ltd., 831001 Jamshedpur, Jharkhand, India
e-mail: shailesh.verma@tatasteel.com

Received: 30 November 2013
Accepted: 28 May 2014

Abstract

Maximization of non-coking coal in coal blend is eloquent interest among researchers in coke making throughout the world. To maximize the non-coking coals in coal blend with the scarce and expensive coking coals is an essential practice in the iron and steel industry. The fundamental aspect of the coal blending theory of low value coals to produce good quality of metallurgical coke in non-recovery coke making process was investigated in this study by using the composite coking potential technique. The implementation of the technique has yielded use of up to 25% pulverized coal injection, 20% raw petroleum coke as a component of coal blend. Results show that the coal blend having composite coking potential value of 4.8 is desired to achieve the targeted coke strength after reaction of 65.