Brief Introduction Of Refractory Gunning Mix
Refractory gunning mix is a kind of unshaped refractory material used for gunning construction with jet machine. It is composed of refractory aggregates and powders with a certain particle size, binding agent and admixture. According to the material, there are alkaline, aluminum silicate, zirconium-containing and silicon carbide-containing. Refractory gunning mix is mainly used for repairing of steel and non-ferrous metal smelting furnaces and heating furnaces.
Classification
1. According to the composition of the gunning material, it is divided into: high aluminum, high silicon, magnesia, magnesium chromium, silicon carbide, etc.
2. According to the state of refractory materials, it can be divided into: dry, semi-dry and wet gunning. If the corrosion surface of the furnace lining is larger, the wet method is better for hot gunning; the dry method is more to fill the severely corroded parts of the situation. .
3. According to the temperature of gunning delivery gas, it can be divided into cold and hot gunning.
Technical Datas Of Refractory Gunning Mix
| BRAND NAME | Maxgun 45 |
Maxgun 60 |
Maxmongun 45 |
Maxmongun 60 |
Maxmon-ABR Gun 70 | Maxlyte 11 Gun |
Maxlyte 13 Gun |
| Features | Dense Gunning Material | Dense Gunning Material | Dense Gunning Material | Dense Gunning Material | Dense Gunning Material | Dense Gunning Material | Dense Gunning Material |
| Base Raw Materials | Calcined Clay, High Purity Cement | Sillimanite, High Purity Cement | Calcined Clay, High Purity Cement | Sillimanite, High Purity Cement | Sillimanite, Andalusite, High Purity Cement | Insulating Grog, Medium Purity Cement | Insulating Grog, Medium Purity Cement |
| Installation | Gunning | Gunning | Gunning | Gunning | Gunning | Gunning | Gunning |
| Shelf Life (months) | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Maximum Service Temperature (0C) | 1450 | 1500 | 1450 | 1550 | 1600 | 1300 | 1350 |
| Maximum Grain Size (mm) | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Water Required for Gunning (%)* | 11-15 | 10-14 | 9-12 | 8-11 | 7-10 | 35-45 | 30-40 |
| Delivery State | Dry Powder | Dry Powder | Dry Powder | Dry Powder | Dry Powder | Dry Powder | Dry Powder |
| Packing in Polythene Bags (kg) | 25/50 | 25/50 | 25/50 | 25/50 | 25/50 | 25/50 | 25/50 |
| Al2O3 | 43-45 | 58-60 | 43-45 | 58-60 | 68-70 | 32-35 | 35-38 |
| Fe2O3 | 2.0-2.5 | 1.3-1.5 | 1.3-1.5 | 1.3-1.5 | 1.1-1.3 | 3.5-4.5 | 3.5-4.5 |
| Bulk Density (g/cc) after Drying at 1100C/24h | 1.95-2.05 | 2.10-2.20 | 2.10-2.20 | 2.25-2.40 | 2.45-2.55 | 1.30-1.40 | 1.45-1.55 |
| After Drying at 1100C/24h | 250-350 | 300-400 | 400-500 | 500-600 | 600-700 | 40-50 | 70-80 |
| After Firing at 8000C/3h | 150-250 | 200-300 | 500-600 | 600-700 | 700-800 | 25-35 | 40-50 |
| After Firing at 11000C/3h | 100-200 | 150-250 | 550-650 | 650-750 | 750-850 | 15-25 | 30-40 |
| After Firing at 14000C/3h | 250-350 | 300-400 | 600-700 | 700-800 | 800-900 at 15000C/3h | – | – |
| After Drying at 1100C/24h | 35-45 | 40-50 | 50-60 | 60-70 | 65-75 | 8-15 | 10-18 |
| After Firing at 8000C/3h | 20-30 | 30-40 | 55-65 | 65-75 | 70-80 | 6-12 | 8-15 |
| After Firing at 11000C/3h | 15-25 | 20-30 | 60-65 | 70-75 | 75-85 | 5-10 | 6-12 |
| After Firing at 14000C/3h | 35-45 | 40-50 | 60-70 | 70-80 | 80-90 at 15000C/3h | – | – |
| Refractoriness (0C/OC) min. | 1621/26+ | 1665/30+ | 1683/31+ | 1785/35+ | 1804/36+ | 1398/14+ | 1398/14+ |
| After Firing at 8000C/3h | ±0.4 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.8 | ±0.6 |
| After Firing at 11000C/3h | ±0.6 | ±0.5 | ±0.5 | ±0.4 | ±0.4 | ±1.2 | ±1.0 |
| After Firing at 14000C/3h | ±1.5 | ±1.0 | ±1.2 | ±1.0 | ±0.8 at 15000C/3h | – | – |
| *Water required for Gunning not only depend upon the Gunning materials but also on the Surface to be Gunned, Workmanship of Gunman, Ambient Conditions and many other related parameters. | |||||||
Refractory gunning mix produced by RS refractory is with high quality and competitive price, we RS refractory manufacturer has specialized in producing Refractory gunning mix for many years and get many reliable customers, we mature production technical and high quality raw materials make our products have good quality.
Application
Refractory Gunning Mix is mainly used to repair the lining of kilns or thermal equipment, blast furnaces, hot blast furnaces, tap ditch, open hearth furnace, converter and electric furnace, heating furnace, flue, chimney, etc., such as RH furnace dip pipe, ladle, hot metal ditch, etc.
Refractory gunning material is an unshaped refractory material that prolongs the service life of kilns and reduces the user’s expenditure on refractory materials. After spraying on major kilns and thermal equipment, the use effect is very significant.
