Gunning Mix

Description of 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.

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Kerui Gunning Mix Technical Data Sheet

Model	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 (%)*	45976	45944	45912	45880	45848	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	45884	45948
After Firing at 8000C/3h	20-30	30-40	55-65	65-75	70-80	45820	45884
After Firing at 11000C/3h	15-25	20-30	60-65	70-75	75-85	45787	45820
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.

Classification of Gunning Mix

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.

Application of High Alumina Refractory Castable

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.