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A technology of ceramic kiln and thermal radiation, applied in the field of thermal radiation coatings for ceramic kilns, can solve the problems of coating performance influence, failure, and coating efficiency decline, and achieve the effects of small environmental impact, improved emissivity, and simple and convenient construction
Active Publication Date: 2014-02-05
启东市三江建筑机械有限公司
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Abstract
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Problems solved by technology
However, when the coating is applied to a higher temperature, or when working in a multi-component atmosphere for a long time, the performance of the coating will be greatly affected, and the efficiency of the coating will decrease or even fail.
Method used
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Embodiment 1
[0016] Example 1 Zinc aluminum spinel powder 20%, manganese aluminum spinel powder 15%, ilmenite powder 10%, boron carbide 5%, iron oxide 3%, desiliconized zirconium powder 2%, binder 25%, yellow The dextrin is 0.5%, the rest is solvent, and the coating of the present invention can be prepared by mixing thoroughly.
Embodiment 2
[0018] Zinc-aluminum spinel powder 30%, manganese-aluminum spinel powder 5%, ilmenite powder 10%, boron carbide 5%, iron oxide 3%, desiliconized zirconium powder 2%, binder 25%, yellow dextrin 0.5 %, the rest is solvent, and the coating of the present invention can be prepared by mixing thoroughly.
Embodiment 3
[0020] Zinc aluminum spinel powder 25%, manganese aluminum spinel powder 10%, ilmenite powder 10%, boron carbide 5%, iron oxide 3%, desilication zirconium powder 2%, binder 25%, yellow dextrin 0.5 %, the rest is solvent, and the coating of the present invention can be prepared by mixing thoroughly.
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Abstract
The invention discloses a heat-radiation coating material for a ceramic kiln. The heat-radiation coating material contains base materials, additives, a binder, a plasticizer and a solvent, wherein the base materials and the additives are selected from five kinds or all of gahnite powder, manganese-aluminum spinel powder, ilmenite powder, boron carbide, ferric oxide and desilicated zirconium powder; the binder is prepared from liquid aluminum dihydrogen phosphate and liquid magnesium dihydrogen phosphate; the weight percent of the base materials and the additives is 6-75%, the weight percent of the binder is 5-29%, the weight percent of the plasticizer is 0.5-3%, and the balance is the solvent. The coating material has the advantages that the operating temperature range is large, the coating material can be used at the temperature above 1,400 DEG C, and the maximum operating temperature can reach about 2,000 DEG C; the coating material is applicable to various substrates, has strong adhesive power to the substrates and is applicable to acid / base multiple atmospheres, the long-term durability is good, the thermal-shock resistance is strong, the energy source utilization ratio and heat efficiency are increased, the temperature of the substrates covered by the coating material is lowered, the wear resistance and corrosion resistance are good, the environmental impact is little, and the use is convenient.
Description
Technical field [0001] The invention relates to a thermal radiation coating for ceramic kilns, more precisely, to a high emissivity coating that can improve the thermal efficiency of the furnace, and can be applied to roller kilns, tunnel kilns and shuttle kilns in the ceramic industry. Background technique [0002] Thermal radiation coatings for ceramic kilns have been applied in many industries. It can be used as a refractory material on the heat-absorbing surfaces of various industrial furnaces and kilns. It uses the principle of high heat radiation absorption and high emissivity of the coating to increase high temperatures. The furnace lining absorbs the heat of the furnace flame, improves the heat exchange conditions of the furnace, reduces the heat dissipation of the furnace, and increases the thermal efficiency of energy utilization. At the same time, it has a good protective effect on the furnace matrix material, prolongs the service life of the furnace and reduces mainten...
Claims
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Application Information
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