Blast Furnace Iron Runner Precast Overhaul
Frequent iron runner relining caused long downtime. Precast trough segments and quick-change blocks cut the overhaul from 5 days to 2 days and are expected to extend runner life by over 30%.
Copper Smelter Roof Hot Repair
Local roof burn-through and cracking was repaired by hot-repair ramming plus gunning seal, cutting repair cost by about 60% and extending roof life for one more campaign.
Customer：Copper smelting company in JiangxiLocation：Guixi, Jiangxi
1Challenge
The arched roof suffered local burn-out and cracking under hot gas and molten splashes. Full demolition was costly and time-consuming, and the customer wanted repair without a full furnace shutdown.
2Solution
The damaged zone was cleaned and re-anchored, then hot-repair ramming mix restored the geometry zone by zone, finished with a gunning material seal to reduce gas penetration while the furnace was kept warm.
3Result
Repair was completed within the scheduled maintenance window without extra downtime. Cost was about 60% lower than full rebuild, and roof life extended for one more campaign.
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