Hot air furnace drying、 insulation and cold furnace technology

1.  Drying technology of blast furnace and hot blast stove

At present, various kinds of stove of different types, different kinds of refractory material, and the combustion media of different types are a good way to solve the problem of oven.

2.  Long period of silica brick hot furnace insulation technology

Heat insulation furnace, especially thermal insulation brick stove, hot blast stove is shut down or need to repair in blast furnace. How to keep the brick masonry temperature not lower than 600 ℃, while the exhaust temperature is not higher than 400 ℃. According to the site and equipment maintenance shutdown of length and time, using different methods of thermal insulation. The first uses the combustion and keep the roof temperature, air cooling, and the control of exhaust temperature approach called "burning heating, air cooling heat preservation method". The heat preservation method is an effective measure of silica brick hot furnace insulation. No matter how long the blast furnace shutdown time, this method applies.

3.  Silica brick hot stove cool stove reproduction technology

Cool furnace brick stove: brick has good performance of high temperature and low temperature (600 ℃) instability. In the past, silica brick hot blast stove once put into production, can no longer be cooled to 600 ℃,

otherwise it will suddenly shrink, rupture and collapse of brick masonry. The experimental study of a large number of internal and external, cold furnace brick stove, there are two kinds of methods are: natural slow furnace cooling and rapid cooling furnace.

Silica brick for hot blast stove, natural corrosion cold furnace is successful, but because the relationship between the natural period, slow cooling time, do try to quickly cool furnace. A steel mill blast furnace brick in hot blast stove was fast cooling furnace, with 14 days of the furnace successfully to cool down. And successfully repeated reproduction. Fast cooling furnace is very successful, breaking the "firebrick in hot blast stove life goods" argument, that silica brick hot furnace fast cooling furnace is feasible "indicates the possibility and inevitability of silica brick hot blast stove cross generation".