essb smpmf sop 01 mixer furnace process

EASTERN STEEL SDN. BHD. DOCUMENT NO. ESSB-SMP/MF-SOP-01

STANDARD OPERATING PROCEDURE DATE ISSUE 3/7/2014

MIXER FURNACE PROCESSREV. / ADM. 0 / 0

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NO. DATE REV. / AMD.

PAGE NO.

DESCRIPTION

REVISED BYAPPROVED

BYREVISION HISTORY

Addition or Deletion

1. 3/7/2014 0/0 4 New Release - Xie Guo Ping

1.0 PURPOSE




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To describe the process flow of product management, molten iron charging operation, tapping operation and maintenance of mixer furnace.

2.0 SCOPEThe scope of work applies to the MF section.

3.0 DEFINITION BOF- Basic Oxygen Furnace

IMP- Iron Making PlantMF – Mixer FurnacePIC- Person In-Charge

4.0 REFERENCE MATERIAL Nil

5.0 RESPONSIBILITIES

5.1 Shift in-charge 5.1.1 Comply with steel making plant position general rules. 5.1.2 Responsible for coordinating the work of daily production and MF. 5.1.3 Responsible for MF regional security and regional health care cleanup work. 5.1.4 Make decision in solving the problems reported by the shift coordinator.

5.2 Shift coordinator5.2.1 Assisting the shift in-charge dispatcher by organize well of the production

management and complete the production and cost works task.5.2.2 Supervise and check the composition and measurement of molten iron.5.2.3 Responsible for the filling of original recording duty record and other related

record and send the text message and report to the shift in-charge regarding the production situation.

5.3 Mixer furnace operator5.3.1 Responsible in observing the composition, weight and temperature of molten iron, monitor the ladle conditions.5.3.2 Responsible in charging and discharging of iron in iron mixing furnace.5.3.3 Monitoring the furnace condition of iron mixing furnace.5.3.4 Liable in cleaning work of molten iron mouth.5.3.5 Liable for safety and civilized production work of iron mixing furnace area after taking over the shift.

5.4 QC Inspector5.4.1 Responsible in monitoring the quality inspections of molten iron to ensure it meets the specifications.

5.5 Crane operation instructor 5.5.1 Responsible in instructing the crane operator in handling ladle.

6.0 PROCEDURE (Refer to Process Flow Chart)

7.0 APPENDIX




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7.1 ESSB-SMP/MF-WI-01017.2 ESSB-SMP/MF-WI-01027.3 ESSB-SMP/MF-WI-01037.4 SMP Mixer Daily Production Record

FLOW CHART RESP. PROCEDURE INTERFACE




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MF SICShift Coordinator

MF OperatorQC Inspector

Crane Operation Instructor


MF Operator


MF Operator


MF Operator

1. Check the molten iron composition, weight and temperature before molten iron charging. Report to shift coordinator if molten iron from blast furnace contains too much slag and low temperature. Hot metal from IMP

can directly send for 2 times sampling depending on Coordinator and MF PIC decision.

2. Molten iron covering with thick slag should be crushed before poured into mixer. Avoid pouring molten iron with slag.

3. Monitor the condition of ladle (no skull) before tapping out the molten iron. Tapping weight of molten iron should follow the requirement of the converter.

4. Weight of the tapping molten iron should follow the converter operator requirements. Allowable tolerance shall in range of ±1.5 tons.

5. Ensure the tapping temperature is controlled between 1150°C -1300°C ±50°C. Each shift should take molten iron sample more than 2 times and the results should promptly inform converter operator.

6. For MF maintenance: Temperature of inner

and outer of mixer shell should be measured in every shift and recorded.

Clear the mixer tap hole or foundry if

ESSB-SMP/MF-WI-0101

ESSB-SMP/MF-WI-0101

ESSB-SMP/MF-WI-0102

ESSB-SMP/MF-WI-0102

ESSB-SMP/MF-WI-0103

ESSB-SMP/MF-WI-0103

Hot metal from IMP

Tapping operation

End. Send to

BOF

Charging molten iron into mixer

YES

Check the iron composition, weight and temperature

2 times molten iron sampling

Coordinator, MF PIC

Coordinator, MF PIC

YES

NO

NO




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there was slagging and clogging.

Every shift has to check the condition of hydraulic system.

Every shift should check all parts of mixer conditions, check and lubrication of variety of equipment, and identify the problems in time and reported.

essb smpmf sop 01 mixer furnace process

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