Abstract: For the difficulty to obtain a stable and satisfying ore to coke ratio indicator by manual decisions and unable to make the burden distribution adjustment timely and accurately， a simulation and decision-making system based on operation optimization was proposed in burden distribution. Taking the minimum deviation between the index value and the optimal value of practical burden surface as the objective function， an operation optimization model was built. A differential evolution algorithm was used to solve the proposed model. The system can improve the stability of the furnace condition after the actual operation of blast furnace， meet the requirements of scientific and stable control of ore to coke ratio and give the adjustment program of burden distribution in time when the furnace condition changes. The practical application results showed the effectiveness of the system.

Key words: burden distribution of blast furnace, simulation system, actual system, simulation experiment, operation optimization