Blast furnace wind speed
Blast furnace operation and control is an important technology in the steelmaking industry. In order to ensure the production index, the parameters such as the blast furnace wind speed must be controlled within a certain range. In the blast furnace smelting process, the wind speed is too low, the ventilation is not enough to blow the slag out of the furnace temperature is too high, so that the combustion air cannot enter the furnace, and the furnace temperature cannot be reduced.On the other hand, too high wind speed can increase the cold air into the furnace, the furnace temperature will be too low, the reaction speed of the furnace material will be slow, the smelting process can not be completed, the output will be reduced.
Therefore, in order to ensure the normal operation of the blast furnace, to ensure the stability of the smelting process, and to ensure the production index, it is essential to control the wind speed in a certain range. In the batch blowing process, the wind force mainly comes from the air blast and cold air. The nature of the wind force not only affects the heat condition of the blast furnace, but also influences the air permeability of the blast furnace. If the vacuum of the furnace cannot be maintained, the wind force will be reduced, and the temperature and the amount of carbon monoxide in the furnace will also be affected.
In order to control the wind speed of the blast furnace in a suitable range, it is necessary to select the fan, set up the necessary blower control device, and adjust the air volume of the air-supply pipe. At the same time, the ventilation door, the hot blast stove and the cold wind pipe should be set up accurately, the wind speed should be measured accurately and the reasonable wind discharge rate should be determined according to the process requirements.
In addition, it is also necessary to adjust the air volume in time according to the slag discharge characteristics, the smelting conditions and the material size. The process requirements of different blast furnaces are also different, so the adjustment of wind speed must be carried out according to the specific process requirements. In general, the furnace blast furnace wind speed should be controlled in the range of 12-24 m/s. It is necessary to adjust the intelligent control device in time to ensure that the wind speed meets the standard.
In conclusion, the blast furnace wind speed is an important factor to ensure the stability of the blast furnace production process. It is necessary to control the wind speed in a certain range, and adjust the air volume in time according to different conditions. It is also necessary to measure the wind speed accurately and set up reasonable air exhaust rate. With the continuous improvement of intelligent control technology, the control of blast furnace wind speed will become smoother.
