Measures to prolong the service life of refractory alumina balls

Strengthen the control of the dust content of the gas used in the hot blast stove and the inhaled particles of the combustion air. Improve the detection method of gas dust content, control the amount of solid particles inhaled by combustion air from the atmosphere, reduce the clogging of the pebble bed by dust, and improve the heat exchange capacity of the hot blast stove.

Optimize the pebble bed structure. Through the study of the temperature field and gas flow field in the hot blast furnace, the optimal pebble bed structure is proposed from the perspective of the uniformity of temperature distribution and gas distribution, so as to reduce the refractory ball caused by the uneven temperature and airflow distribution and the local temperature is too high. Softening deformation, to achieve the purpose of improving the service life of the refractory alumina ball.

Improve the quality of refractory alumina balls. The mineral composition, production process and firing process of the refractory ball play a decisive role in the use characteristics of the refractory ball. Improving the quality of the refractory ball (mainly its thermophysical properties) is an important way to prolong the service life of the ball-type hot blast stove.

The calorific value of uniformly mixed gas is mainly to determine the proportion of the mixed gas, so that the mixed gas is uniform and stable, and the influence of the fluctuation of the calorific value of the mixed gas on the hot blast stove is reduced.