5.4.1 The converter shall be in elevated arrangement.The level of the main operation platform of converter shall be designed in such a way that 150mm 300mm is subtracted from 1/2 of inner diameter of mouth below the level of trunnion.The level of trunnion shall be determined in such a way that the maximum furnace tilting radius is 200mm 300mm higher than the upmost point of tapping ladle.If bottom repair is adopted for the furnace,the condition for the access of bottom car and furnace repair car shall be verified;and the condition adaptable for liquid semi-steel charging ladle shall be also taken into consideration in determining clearance height of arrangement if hot metal dephosphorization is performed in converter.

5.4.2 The column distance of the shop building where converter is located shall meet the requirement for arrangement of all the converter equipment including tilting mechanism and also for the condition of operation between adjacent converters,which may be determined according to Table 5.4.2.

5.4.3 The main building of converter steelmaking shop should be composed of several adjacent bays,including charging bay,furnace bay,(refining bay)and liquid steel reception bay in turn.The furnace bay shall be located between the charging bay and the liquid steel reception bay.When there are more than 2 converters,a separate refining bay should be arranged between the converter bay and the liquid steel reception bay.

The quantity and parameters of the casting system and the downstream bays shall be determined based on the arrangement of the casting system.

5.4.4 The parameters for bays of main steelmaking shop building shall be in accordance with the following provisions:

1 Charging bay:The span should be 21m 30m,which shall depend on the volume of furnace and process layout of scrap section and hot metal section.The rail top level of crane shall be defined according to the connection for hot metal charging of furnace and the scrap section may be equipped with low-rail crane if over high rail top level is not convenient for scrap bucket proportioning operation.

2 Furnace bay:The span should be 12m 27m,which shall depend on the volume of furnace and the arrangement of bulk material charging system,furnace repair system,fume cleaning system and steam drum of evaporative cooling flue in the bay.The height of bay shall be determined based on the height of steam drum and lance and sublance lifting device.If the bay is a multi-platform structure,the elevator and staircase access to each platform shall be provided.

3 Refining bay:The span shall be 21m 30m and shall be determined according to the general process layout.The rail top level of crane shall be determined depending on the height of refining equipment.

4 Liquid steel reception bay:The span shall be 21m 33m and shall be determined according to the general process layout.The rail top level of crane shall be determined depending on the height of refining equipment and ladle turret and also the clearance from the upmost point of turret+ladle including ladle lid manipulator to the bottom edge of protection structure at bottom of crane beam shall not be less than 0.5m.

5.4.5 The process layout of converter steelmaking shop shall be determined in such a way that the operations are performed by sections according to the process flow to realize smooth process flow without interference of different material flows and different process steps.

5.4.6 On the roof truss in each bay of the main shop building of the converter steelmaking shop,an appropriate number of lifting devices shall be provided for crane maintenance.

5.4.7 The uniformly distributed load of main operation platform for converter should be determined as 20kN/m ² 30kN/m ² and the load requirement for the dismantling machine operation area shall be determined according to the document of equipment.The uniformly distributed load of other platforms in furnace bay should be determined as 5kN/m ² 8kN/m ² .The uniformly distributed load of brick stack zone on the furnace mouth platform should be determined as 20kN/m ² .The uniformly distributed load of the ground should be determined as 20kN/m ² 50kN/m ² . l4rRmBGXgqRoAMne1Ei7iMyt3awpNcOHKjp6maWOX1vJEf5MT6GjdFEKTqQLUSzm