Monolithics · Gunning Materials
Gunning mass — for online and shutdown repair
Gunning materials are sprayed onto worn refractory surfaces from a gun nozzle, with water added at the nozzle (wet gunning) or in the mixer (dry gunning). They consolidate against the hot face and extend lining campaigns dramatically — a converter slag-line that gets one quick gunning shot per heat will outlast an un-gunned lining several times over.
MgO/Al2O3
Bond Systems
Wet & Dry
Application Methods
Online
Repair Capable
Pune-Belt
Stocked & Dispatched
Overview
Gunning Materials — what they are, when to specify
Gunning material is a refractory mix designed for pneumatic application — fine particle size for nozzle handling, controlled set-time so it adheres to vertical and overhead surfaces, and bond chemistry matched to the hot-face being patched. The technique extends lining life by replacing only the worn zone instead of relining the whole vessel.
Grades
Stocked grades — pick by service condition
Indicative properties only. Final specification is set per application after we review your operating envelope.
| Grade | Composition | Service Limit | Typical Application |
|---|---|---|---|
| Magnesia Gunning (MgO 90%+) | MgO 90-95% | 1700 °C | BOF converter slag-lines, steel ladle slag-zones |
| Magnesia-Carbon Gunning | MgO 85%, C 5% | 1700 °C | EAF hot-spots, ladle slag-lines under desulph |
| High-Alumina Gunning | 70-90% | 1700 °C | EAF roof delta, reheat-furnace hot-spots |
| SiC-Bonded Gunning | with 30-50% SiC | 1450 °C | Aluminium runners, blast-furnace stack lower |
| Silica Gunning | Silica 95%+ | 1700 °C | Coke oven battery repairs, glass-tank breast |
| Tundish Spray Mass | MgO-Al2O3 mix | Per-cast | Tundish working-lining spray (basic) |
Supplied dry-mixed in 25 kg moisture-barrier bags. Both wet (water added at nozzle) and dry (water added at mixer) variants available. Gunning equipment hire available with operator on indent.
Datasheets available on request — email punesales@chaneyco.com with your specification and we will send the matching PDF.
Applications
Where gunning materials are specified
Steel & Foundry
BOF converter cones and slag-lines, EAF roofs, ladles, tundishes
Aluminium
Holding furnace inner lining, transfer trough repairs
Cement & Lime
Kiln coating zone repairs, riser-duct patches
Glass & Ceramics
Regenerator chamber repairs
Coke & Coal
Coke oven battery wall repairs, by-product gas duct
Power & Energy
FBC and CFB bed repairs, hot cyclone separators
Why Chaneyco
Three reasons buyers source gunning materials from us
Stocked at Chakan, dispatched fast
Gunning Materials are held at our Chakan plant in Pune. Standard grades dispatch same-day to plants in the Pune industrial belt and within days pan-India by road or rail.
Spec advice before quote
Choosing the right grade for the operating envelope makes a much bigger lifecycle-cost difference than haggling on the cheapest grade. Our technical team will recommend by zone before quoting.
ISO 9001:2015 audit-ready
Every batch ships with composition and dimensional QC records, supported by our ISO 9001:2015 certification (Cert. 11553, AQSR / USAC accredited, valid through 17 Sept 2027).
Frequently Asked
Gunning Materials questions, answered
Wet vs dry gunning — which method?
Wet gunning gives smoother, denser deposits with less rebound — best for cold or shutdown repair. Dry gunning lets you spray onto hot surfaces (online repair) where wet material would steam-explode. Most steel plants use dry gunning between heats and wet gunning during planned maintenance windows.
Can you supply gunning equipment with operator?
Yes — through our installation services. We can supply the gun, hoses, compressor and a trained nozzle operator from our Chakan crew. Online repair work requires the right operator more than the right material.
How much can gunning extend a lining?
Highly dependent on the application. A typical BOF converter on a planned gunning schedule sees 2-3x the un-gunned campaign life. Ladle slag-lines see 1.5-2x. The economics are usually overwhelming — gunning material cost vs. relining cost runs roughly 1:20.
Talk to a Refractory Engineer
Tell us about your application
Share the basics — furnace type, operating temperature, atmosphere, the lining zone you are specifying. Our technical team responds within one working day with grade recommendation, indicative quote and lead time.