Method for adjusting coal milling quantity of injection coal

The invention relates to the technical field of blast furnace coal milling, in particular to a method for adjusting the coal milling amount of injection coal. The injection coal milling quantity adjusting method comprises the steps that the operation state of a blast furnace is determined according to operation parameters of the blast furnace; under the condition that the blast furnace runs smoothly, coke entering the furnace is reduced, and the coal injection amount is increased; under the condition that the blast furnace fluctuates, the coal injection amount is reduced, and coke entering the furnace is increased; and adjusting the coal milling quantity of the coal mill according to the coal injection quantity. The method for adjusting the coal milling quantity of the injection coal can adapt to the working state of the blast furnace by adjusting the coal milling quantity, so that the coal injection ratio can be increased to replace coke, the coke consumption of the blast furnace is reduced, and the operatio