| 摘要 |
PROBLEM TO BE SOLVED: To reduce the cost while maintaining the functions of the flow rate measurement and the flow rate adjustment of pulverized fine coal in a method for distributing and feeding pulverized fine coal to a tuyere of a blast furnace.SOLUTION: In the method for distributing and feeding pulverized fine coal, a step of measuring the amount of pulverized fine coal of each of a plurality of distribution branch pipes 3b by a powder flow rate measuring means 9, comparing each measurement value by a comparing means 11, and adjusting the powder flow rate by a powder flow rate adjusting means 10 so that the measurement value of each of the plurality of branch pipes 3b becomes same based on the result of comparison, and a step of measuring the weight reduction speed of a feed tank 1 by a load cell 1b are executed in parallel. The flow rate of pulverized fine coal of the distribution branch pipes 3b is calculated by dividing the weight reduction speed of the feed tank 1 by the total number of the distribution branch pipes 3b. |
