During the construction process of refractory spray paint material, the material is compacted by repeated and continuous impact of the sprayed material. Therefore, the sprayed coating has a better density and mechanical strength. Refractory spray paint can be used in hot blast duct systems, blast furnace throats, furnace tops and gas outlet pipe systems, furnace bottom foundations, and blast furnace and hot blast furnace linings.
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| RS Spraying Refractory Coatings for Sale |
What is Refractory Coating?
The construction of spray refractory coating actually combines transportation, pouring, or tamping into one process. It does not require or only requires a single-sided formwork. The process is simple, highly efficient, and has good adaptability. During the construction process of refractory spray coating, the repeated and continuous impact of cement, aggregate, and other constituent materials causes the sprayed materials to be compacted, so the spray coating has better density and mechanical strength.
Are There Any Lightweight Spraying Refractory Coatings?
High-temperature refractory coatings and spray coatings are unshaped materials among refractory materials. Therefore, there are also light, heavy, and semi-heavy ones.
Heavy refractory spray paint is relative to light refractory spray paint. Light spray paint refers to a density of 0.5-1.3g/cm3, and medium-heavy spray paint refers to a density of 1.3-1.8g/cm3. Then the density of heavy spray paint is the largest, and its volume density is greater than 1.8g/cm3. Lightweight spray coatings are used as thermal insulation and thermal insulation linings, while medium and heavy spray coatings can be used as both thermal insulation linings and working linings for low and medium-temperature atmosphere furnaces. Heavy spray coatings are mainly used as high-temperature service linings.
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| Lightweight Spraying Refractory Coating |
Applications of High-Temperature Refractory Coating Products
Refractory spray paint is mainly used as a sealing material for the lining of thermal equipment in industrial furnaces. It can be used in hot blast duct systems, blast furnace throats, furnace tops and gas outlet pipe systems, furnace bottom foundations, and blast furnace and hot blast furnace linings.
The lightweight spray coating plays the role of thermal insulation, while the semi-heavy spray coating not only plays the role of thermal insulation, but also can be used as a working layer in furnace linings, chimneys, and pipes where the temperature does not exceed 1000°C.
Heavy refractory spray coatings are generally used for lining hot blast furnaces and blast furnaces and are also used for emergency repairs in lime kiln linings. At present, some domestic manufacturers also spray directly on the lining of the white ash shaft kiln as the working layer. The advantage of refractory spray paint is that it can be applied quickly.
Semi-heavy spray paint is used for flue and chimney linings because the temperature of the flue and chimney linings is not high and there cannot be adequate lining materials. Therefore, many manufacturers choose semi-heavy spray coatings for both thermal insulation and working layers. In this way, the inner diameter space is saved, and it can also prevent wind and smoke erosion.
The lightweight spray paint is used as a thermal insulation layer, and when used, if the area to be used is small, it can also be applied directly. Because the construction time of lightweight spray paint is short, in general, it is convenient and quick to use lightweight spray paint when the usage is large. Because hundreds of tons of spray paint will be sprayed within a few hours.
However, spray coatings have a rebound rate, and the national standard is 20%. However, the rebound rate of spray coatings currently on the market is around 8-10%. During construction, professionals must cooperate with the sprayer for normal use. A small amount can also be applied manually, and just use putty when applying.
Spray coatings are divided into neutral, acidic, and alkaline materials. When using, select the material suitable for the furnace lining for spraying according to the atmosphere of the furnace lining. Because the furnace lining atmosphere and materials are in the same atmosphere, the furnace lining atmosphere is good and the service life is long.
Rongsheng Refractory Materials Manufacturer is a powerful manufacturer and seller of refractory materials. Our environmentally friendly, fully automatic unshaped refractory material production line provides high-quality refractory lining materials for various industrial kilns. Product quality is guaranteed, and the spray refractory coating formula can be customized. The professional technical and construction team provides pre-sales technology and after-sales construction services for refractory lining solutions. Contact us to get free samples and quotes.
