CEMMAC a.s.

Disassembly and assembly works – a basic scope:

• The rotary kiln shell marking-off for 1x circumferential cut (with accordance to actual dimensions of a new part)
• Manufacture and assembly of 1pc of star-shaped reinforcement inside the kiln,
• Cutting-off the shell outlet end (approximately Ø 3400 x 750 mm)
• using a special semiautomatic process - BUG-O system,
• Disassembly of the shell with armouring from the position and transport to a level + 0.00 m ( c. 4500 kg)
• Preparation of a weld edge on the existing shell for an asymmetrical weld 1x-X35/32

• Cleaning and grinding of the weld edge after cutting,
• Cleaning and grinding of the weld edge on a new shell
• Transport of the new shell part onto a hot head level,
• Installation of a new assembled outlet part with armouring onto a position,
• Assembly, measurement and tacking together to the rotary kiln outlet end unit

• with the existing shell using clamping and adjusting jigs,

• Measurement of the radial run-out of the kiln outlet end before welding,
• Both-side welding of X35/32 circumferential weld including gouging with continuous preheating through MAG 136 manual method with tubular wire
• Disassembly of a cross-shaped reinforcement in the old shell,
• Shell cleaning from lugs and preparation for non-destructive testing
• Measurement of the shell outlet end radial run-out after welding,
• NDT – UT 100% - C grade on the assembly weld