Title

INCREASE OF BOF REFRACTORY LIFE THROUGHT ROUTINE MANAGEMENT PRATICES

INCREASE OF BOF REFRACTORY LIFE THROUGHT ROUTINE MANAGEMENT PRATICES

Authorship

ROCHA FILHO, FRANCISCO ALBERTO MARREIROS DA; CARNEIRO, CARLOS ANDRÉ RUY; PIRES, FLÁVIO PAULO VASCONCELOS

ROCHA FILHO, FRANCISCO ALBERTO MARREIROS DA

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CARNEIRO, CARLOS ANDRÉ RUY

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PIRES, FLÁVIO PAULO VASCONCELOS

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DOI

10.5151/2594-5300-42941

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Abstract

This work presents a method for the improvement of the lining life of the BOF converter by Routine Management, Process Performance and Reliability Management. During this work have been developed new practices that involves new ways of process control, it is worth highlighting the routine management and the control by shift of process quality indicators that contribute to the refractory preservation of the BOF, such as: End-of-Blow Oxidation, % Reblowing and quality of the slag coating practice. Also contributing to the performance of the BOF, the work carried out in the Reliability Management of the equipment has been fundamental, significantly reducing unplanned shutdowns that harm the performance of the refractory. These practices focused on the Management and Quality of Processes and equipment, combined with the engagement and desire to innovate of the people, resulted in the change in level from 3,900 to 4,500 runs of the lining life of the Converter.

THIS WORK PRESENTS A METHOD FOR THE IMPROVEMENT OF THE LINING LIFE OF THE BOF CONVERTER BY ROUTINE MANAGEMENT, PROCESS PERFORMANCE AND RELIABILITY MANAGEMENT. DURING THIS WORK HAVE BEEN DEVELOPED NEW PRACTICES THAT INVOLVES NEW WAYS OF PROCESS CONTROL, IT IS WORTH HIGHLIGHTING THE ROUTINE MANAGEMENT AND THE CONTROL BY SHIFT OF PROCESS QUALITY INDICATORS THAT CONTRIBUTE TO THE REFRACTORY PRESERVATION OF THE BOF, SUCH AS: END-OF-BLOW OXIDATION, % REBLOWING AND QUALITY OF THE SLAG COATING PRACTICE. ALSO CONTRIBUTING TO THE PERFORMANCE OF THE BOF, THE WORK CARRIED OUT IN THE RELIABILITY MANAGEMENT OF THE EQUIPMENT HAS BEEN FUNDAMENTAL, SIGNIFICANTLY REDUCING UNPLANNED SHUTDOWNS THAT HARM THE PERFORMANCE OF THE REFRACTORY. THESE PRACTICES FOCUSED ON THE MANAGEMENT AND QUALITY OF PROCESSES AND EQUIPMENT, COMBINED WITH THE ENGAGEMENT AND DESIRE TO INNOVATE OF THE PEOPLE, RESULTED IN THE CHANGE IN LEVEL FROM 3,900 TO 4,500 RUNS OF THE LINING LIFE OF THE CONVERTER.

Keywords

BOF, refractory, lining life, slag coating, management

BOF, refractory, lining life, slag coating, management