Completion of a large-scale repair campaign at AMT Coke Plant in Kazakhstan
In late December 2022, OKOS teams have wound up a massive repair campaign on coke oven batteries Nos. 3, 4 & 7 at ArcelorMittal Temirtau, which lasted for 40 months starting from September 2019.
During this work period, we rebuilt 10 full-length heating walls, 2 half-walls 14 flues long each, and 204 end-flue zones from 4 to 10 flues deep. OKOS repaired corbel area, regenerators and carried out partial replacement of the regenerators’ checker bricks. Damaged refractory brickwork was mended using ceramic welding.
Huge scope of repair and replacement work was done for the cellar equipment of the ovens heating system. The OKOS mechanical team has replaced flashplates, door frames, cross tie-rods and reset the loads on the bracing system’s main and auxiliary spring units. The process (gasmen) team of OKOS handled and ensured the monitoring and regulation activities for the thermal and hydraulic modes of ovens operation at the repair sites. Flashplates of 14 walls which had slipped down 50-130 mm below their design elevations have been raised to restore their original positions at the coke side of COB No.7.
The management of AMT Coke Plant has noted and appreciated high skills of the OKOS specialists and would recommend the company as a reliable partner. Besides, the customer gave a positive feedback by issuing a formal letter of appreciation to OKOS.
