Real-world castable solution practices
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%.
Frequent thermal shocks caused nose castable spalling. High-alumina/corundum precast blocks replaced cast-in-place lining, lifting life by about 40% and extending the maintenance cycle from 6 to 9 months.
Dense-phase zones suffered severe particle abrasion. A steel-fibre reinforced SiC wear-resistant lining extended the continuous run from 8 to over 12 months.
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.
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