Brief Introduction
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. 
Technical Datas
|
Refractory Gunning Mix |
|||||||
|
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. |
|||||||
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.