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Closed loop control of the BF JK21059

Closed loop control of the BF JK21059. Decreased variations of process and improved hot metal quality Decreased Energy Consumption Increased PC rate, decreased coke rate. by Control of blast parameters and PCR Improved burden distribution control. Process analysis.

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Closed loop control of the BF JK21059

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  1. Closed loop control of the BF JK21059 • Decreased variations of process and improved hot metal quality • Decreased Energy Consumption • Increased PC rate, decreased coke rate by • Control of blast parameters and PCR • Improved burden distribution control

  2. Process analysis Closed loop control of the BF JK21059 Quality of measur. data • Decreased process variations • Improved HM quality • Decreased energy consump. • Increased PCR decreased CR Model development New measurement technique Control of blast parameters Mechanisms Si-variations Improved burden distrb. control Samples from tuyere Mechanisms raw material Alternative raw materials EBF tests Raw material quality Burden distribution

  3. Activities at SSAB • Process evaluation with extended raw material sampling • Raw material • 100 % MPBO/100 % KPBO • Test of MV and LV coal • Coal combustion – a literature survey • Burden distribution strategy • New measurements • Continous HMT measurements • Raceway depth in collaboration with Mefos • Core Drilling/Tuyere raking

  4. Further Work • Raw material • Evaluation of test with MPBO 2004 • Summarised report of coal testing • Caractherisation of raceway and deadman – master thesis • Measurement technique- • Continous HMT (test of equipment 2 och 3) • Raceway depth

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