| Hot blast stove is a key facility in blast furnace ironmaking. Higher temperature blast is an ultimate target for the blast furnace ironmaking. The Ceramic burner is yet an important key for the hot blast stove. It is determined that the quality of the stove when we design and use it.A ceramic burner with a pole for the hot blast stove was studied in this article. The characters of pressure drop, homogeneousness of flows at burner ports, the distribution of flows in the chambers were studied through cold model experiments based on Similarity Theory. This new type of ceramic burner enhanced mixture of gas and air through two stages mixture of gas and air, placing a pole in the center of the gas channel and placing a ban in the inlet of gas and reduced the pressure drop of the burner through distributing the pressure drop in gas channel and air channel. It just has 1/4 times pressure drop and more combustion capability when compared with the tube-in-tube ceramic burner. This ceramic burner was applied successfully in the hot blast stove of No.3 and No.4 Blast furnace in Taiyuan Iron & Steel Corp. Ltd., the hot blast stove of No.7 and No.8 Blast furnace in Xinyu Iron & Steel Corp. Ltd. and the hot blast stove of 1080 Blast furnace in E'cheng Iron & Steel Corp. Ltd.A Multi-burner-port Annular Flameless Ceramic Burner (MAFCB) of shaftless stove was yet studied in this article. The characters of pressure drop, homogeneousness of flows at burner ports, the distribution of flows in the chambers and joint were studied by cold model experiments based on Similarity Theory. This new type ceramic burner just has one inlet of gas and air respectively when jointed with the body of shaftless stove and there are not flames when it burns. These will make the doom of the shaftless stove steadily and protect the regenerative burned out. This type of ceramic burner was successfully applied in the shaftless stove filled with refractory balls of 6th blast furnace at Liuzhou Iron & Steel Corporation Ltd. and it get a higher and steadiness of hot blast temperature at 1200℃when just combusted BFG and the thermal efficiency of shaftless stove was up to 78.95%.Mathematic simulation is another method used to develop the combustions and furnaces. This was used to develop the mult-burner-port annular flameless ceramic burner of shaft stove. In this paper, a three-dimensional model of shaftless stove which the geometric similarity ratio is one sixth to the prototype is presented. Based on the governing equation and k-εturbulence model which suits to the gas flow in the shaftless stove, the three-dimensional model is solved by FLUENT commercial software with SIMPLE algorithm. The flow fields of hot-blast stove are obtained. The numerical results also show the homogeneous characters of the combustion chamber outlet and the nozzle outlet, and the drift current is under control in the regenerator when flow control bricks are used in the gas loop. In addition, the current simulation methods of combustion are analyzed. Based on the probability density function combustion model and P1 radiation model which suit to the gas combustion in the ceramic burner, the combustion process is simulated. The velocity distribution, temperature distribution and component distribution of the gas are obtained. By adjusting some parameters of the model, the numerical results can reflect the reality combustion process rightly.At last, the paper summarizes the subject, and some ideas are given for the coming investigation of the hot blast stove. Higher temperature blast is an ultimate target for the blast furnace ironmaking and it will be researched, but it will not exceed 1450℃. The gas and air will be preheated to about 500℃through improve the exhaust temperature to about 550℃, based on using high temperature stand and grid. Shaftless stove is a trend when designed the hot blast stove. Mathematic simulation will be used to develop the ceramic burner and the hot blast stove.
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