METHOD FOR CONTROLLING HOT METAL TEMPERATURE, OPERATION GUIDANCE METHOD, METHOD FOR OPERATING BLAST FURNACE, METHOD FOR PRODUCING HOT METAL, DEVICE FOR CONTROLLING HOT METAL TEMPERATURE, AND OPERATION GUIDANCE DEVICE
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United States of America Patent
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Aug 10, 2023
app pub date -
Jun 14, 2021
filing date -
Jul 6, 2020
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Abstract
A method for controlling a hot metal temperature, includes: a first control loop for calculating a target value of pulverized coal ratio such that a hot metal temperature, predicted by a physical model that is able to calculate conditions inside a blast furnace, falls within a preset target range; and a second control loop for calculating pulverized coal flow rate manipulation quantity to compensate for a deviation between the pulverized coal ratio target value and a current pulverized coal ratio actual value.
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