8.6　Receiving Hopper

8.6.1　The grouping of the receiving hopper shall meet the following requirements:

1　The grouping of the receiving hopper shall be conducted on the bearing stool or the platform.The bearing stool or the platform shall meet the requirements of Item 3 of Article 6.4.8 of this standard.

2　The grouping and welding of the receiving hopper and the welding of the oil cylinder support of the charging valve shall meet the requirements of the design document.When there is no requirement in the design document，the relevant requirements of the current national standard GB 50372 Code for Installation Acceptance of Metallurgical Machinery Ironmaking Equipment Engineering shall be met.

3　After assembling，the overall dimension of the receiving hopper shall be checked and the requirements of the design document shall be met.

8.6.2　The installation of the fixed receiving hopper shall meet the following requirements:

1　After the fixed receiving hopper is lifted by the furnace top crane in place，the longitudinal and transverse centerline of the discharging mouth shall be centered by hanging the steel wire and the pendant，with the allowable deviation of±5mm.

2　The elevation and the height difference of the discharging mouth shall be measured by steel ruler or level gauge，with the allowable deviation of±10.0mm and 5.0mm respectively.

8.6.3　The installation of the movable track of the discharging valve box of the fixed receiving hopper and that of the mobile receiving hopper shall meet the following requirements:

1　The longitudinal center line shall be checked by steel ruler through drawing the wire and hanging the pendant，with the allowable deviation of 3.0mm.

2　The elevation of the track shall be checked by level gauge or steel ruler，with the allowable deviation of±5.0mm.The allowable elevation of the height difference of two track surfaces in the same cross section is 3.0mm.

3　The track gauge shall be checked by steel ruler，with the allowable deviation of±3.0mm.

4　The levelness of the track shall be checked by leveling instrument，levelling ruler or level gauge，with the allowable deviation of 1/1000.In addition，the full length shall not be larger than 10.0mm.

5　The gap between the side face of the rim and the track shall not be less than 1.0mm.