Zhengzhou Annec Industrial Co., Ltd.
Continuously Pushing Forward R& D of HBS for BF and Progress of Refractory Technology To Become Preferred Global Supplier in High Temperature Industry
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Shock Resistance Kilns Bauxite Refractory Gunning Material
Gunning Material is an unshaped refractory material constructed by mechanical spraying method using pneumatic tools.
Gunning Material is composed of refractory aggregates, powders, and binding agents (or additives).
Due to the repeated continuous impact of cement and aggregate and other constituent materials during the spraying process to promote the compaction of the sprayed materials, the sprayed layer has better density and mechanical strength.
| Item | Chemical Composition |
| Bulk density | ≥1.85g/cm3 |
| Al2O3 | ≥60% |
| Raw material | Bauxite |
Gunning Materialare classified into light spray coatings, medium and heavy spray coatings and heavy spray coatings according to the bulk density of the material.
Lightweight Gunning Material is used as heat preservation and heat insulation lining, medium and heavy spray paint can be used as heat insulation lining, while heavy spray paint is mainly used as working lining.
Gunning Material has become one of the most important unshaped refractory materials used in many industrial kiln linings.
Gunning Material can be used for building and repairing furnace lining and coating into a protective layer in cold state, and it is also suitable for repairing furnace lining in hot state.
Features:
1. Good casting properties
2. Low thermal conductivity
3. Good thermal shock resistance
Construction method:
The structure of the cemented refractory material actually combines transport, injection or tamping without one template or in just one process. This process is simple, efficient and adaptable.
Depending on the order of addition of water (or solution) and the amount of water, cement-type refractories can be divided into three types: wet, semi-dry and dry.
The wet method is to mix the spray material into the suspension before spraying.
The semi-dry method is to first wet the spray material, press it into the nozzle, then add the remaining water (or solution), then add all the water (or solution) of the drying method. The most common of them is the semi-dry method.
Process Characteristics Fire resistant spray material is sprayed.
The material mixing ratio, spraying operation, rebound speed and processing characteristics are as follows.
The mixing ratio of the spray coating must meet the following conditions: Required strength, reduced rebound, reduced spray dust, good adhesion and no clogging of pipelines.
When using a cement binder for dry or semi-dry spray, the amount of cement is about a quarter of all materials.
Too much cement increases the amount of dust during spraying and increases the shrinkage of the spray layer after hardening.
Spraying plays an important role in ensuring the quality and recoil of the spray paint.
Controls the distance from the nozzle to the spraying surface.
package:
Ton bag packaging is suitable for sea transportation
