A kind of ore ball mixing method

Abstract

The invention relates to a method for mixing mineral balls, which belongs to the technical field of pellet mixing, and comprises the following steps: 1. reducing the opening of the gate of the weighing bucket; 2. controlling the feeding speed; The program realizes machine-burning and pelletizing, and machine-burning and pelletizing at the same time; 4. Arrange the feeding sequence according to the set distribution matrix; 5. Pass the feeding sequence set in step 4 and mix on the belt. The present invention is applicable to the ratio of 40-60% of the pellets, machine burning + pellets, machine burning + pellets at the same time to achieve the purpose of fully mixing, avoiding the pellets from being distributed to the center and edge, and placing them in the middle of the platform as much as possible Position to prevent the pellets from rolling to the center, and the air flow in the high-temperature pulverization center is suppressed; at the same time, it avoids frequent fluctuations of the furnace wall slag skin and reduces the impact on the furnace condition.

Description

technical field [0001] The invention relates to a mineral ball mixing method, which belongs to the technical field of pellet mixing. Background technique [0002] At present, due to the influence of heavy pollution weather, the output of sinter ore is limited. A high proportion of blast furnaces is equipped with pellets. To cope with the impact of insufficient sinter production, increasing the proportion of pellets used in blast furnaces is the current development trend of blast furnace environmental protection ironmaking. [0003] The shape of the pellets is spherical, and it is easy to roll during the blast furnace material distribution process. The natural pile angle is small, and the pellets are easy to roll to the center and edge of the blast furnace. As the temperature rises, the pellets will burst, pulverize, Expansion, deterioration of the center and edge airflow, resulting in fluctuations in blast furnace conditions, resulting in the center and edge of the two gas f...

AI Technical Summary

Problems solved by technology

As the furnace charge goes down, although the trend of increasing the ore coke ratio in the central ring zone of the blast furnace has slowed down, it still maintains an increasing trend. The operation will cause the condition of the furnace to deteriorate, and even the furnace hearth will be piled up or the furnace wall will be thick, which will affect the blast furnace index