A high heat absorption rate metal pipe wall anti-corrosion and anti-slag wear-resistant ceramic coating

Abstract

The invention discloses a high absorptivity metal pipe wall anti-corrosion and slag resistance wear-resisting ceramic coating, which comprises main components with proportions by weight: silicon carbide 5-15%, brown fused alumina 10-20%, boron nitride 3-8%, boron carbide 2-8%, zirconia 5-10%, potassium titanate 1-3%, chromium oxide 5-10%, iron oxide 5-10%, ball clay 3-10% and high temperature inorganic binder 30-50%, wherein the total weight of the components is 100%. The granularities of all solid components of the high absorptivity metal pipe wall anti-corrosion and slag resistance wear-resisting ceramic coating are less than or equal to 2 microns, parts of components achieve nanometer scales, and the granularities of the parts of components are less than or equal to 100 nanometers. The high absorptivity metal pipe wall anti-corrosion and slag resistance wear-resisting ceramic coating adopts water as solvent, adopts modified high temperature modified inorganic binder as a film forming matter, and determines the addition of the water according to different construction methods, the construction methods comprises a brush coating and a spraying methods, and the volume density of the high absorptivity metal pipe wall anti-corrosion and slag resistance wear-resisting ceramic coating is in 1650-1850kg / m3. The invention discloses a method for making the high absorptivity metal pipe wall anti-corrosion and slag resistance wear-resisting ceramic coating simultaneously.

Description

[0001] Technical field:

[0002] The invention relates to an anti-corrosion and slag-resistant and wear-resistant ceramic coating for metal pipe walls with high heat absorption rate and a preparation method thereof. In industrial equipment, the metal pipe wall used for heat exchange is anti-corrosion and anti-slag anti-wear.

[0003] Background technique:

[0004] Take the boiler as an example. During the operation of the boiler, the thermal efficiency of the boiler is mainly determined by the heat absorption rate of the heating surface. The heating surface is the carrier of heat energy exchange, which improves and maintains the heat absorption rate of the metal tube wall and has a long service life. It is an important condition to ensure the efficient operation of the boiler. However, the actual situation is that the thermal efficiency of the boiler continues to decline with the extension of time during operation. Although there are many factors, the most important factor is ...

Examples

Embodiment

[0026] Weigh 8kg of silicon carbide, 15kg of brown corundum, 4kg of boron nitride, 5kg of boron carbide, 7kg of zirconia, 2kg of potassium titanate, 6kg of chromium oxide, 8kg of iron oxide, 5kg of ball clay, and 40kg of inorganic high-temperature binder. Put the heavy solid powder into the mixer according to the preparation step 1 and mix it thoroughly, then put the mixed powder into the mixer according to the preparation step 2, and add 40kg of the weighed inorganic high-temperature binder at the same time, and then add 50kg of water is stirred at high speed for 8-12 minutes, packaged to make paint, and the storage period is 12 months. The coating in the embodiment has been applied in dozens of coal-fired and gas-fired boilers, and the coating has remarkable efficacy and has been recognized by users.

[0027] A typical case, 11 sets of 10-ton coal-fired steam boilers in a food and beverage production enterprise of a group, after applying the coating, the average energy savin...

[0001] Technical field:

[0002] The invention relates to an anti-corrosion and slag-resistant and wear-resistant ceramic coating for metal pipe walls with high heat absorption rate and a preparation method thereof. In industrial equipment, the metal pipe wall used for heat exchange is anti-corrosion and anti-slag anti-wear.

[0003] Background technique:

[0004] Take the boiler as an example. During the operation of the boiler, the thermal efficiency of the boiler is mainly determined by the heat absorption rate of the heating surface. The heating surface is the carrier of heat energy exchange, which improves and maintains the heat absorption rate of the metal tube wall and has a long service life. It is an important condition to ensure the efficient operation of the boiler. However, the actual situation is that the thermal efficiency of the boiler continues to decline with the extension of time during operation. Although there are many factors, the most important factor is ...

Examples

Embodiment

[0026] Weigh 8kg of silicon carbide, 15kg of brown corundum, 4kg of boron nitride, 5kg of boron carbide, 7kg of zirconia, 2kg of potassium titanate, 6kg of chromium oxide, 8kg of iron oxide, 5kg of ball clay, and 40kg of inorganic high-temperature binder. Put the heavy solid powder into the mixer according to the preparation step 1 and mix it thoroughly, then put the mixed powder into the mixer according to the preparation step 2, and add 40kg of the weighed inorganic high-temperature binder at the same time, and then add 50kg of water is stirred at high speed for 8-12 minutes, packaged to make paint, and the storage period is 12 months. The coating in the embodiment has been applied in dozens of coal-fired and gas-fired boilers, and the coating has remarkable efficacy and has been recognized by users.

[0027] A typical case, 11 sets of 10-ton coal-fired steam boilers in a food and beverage production enterprise of a group, after applying the coating, the average energy savin...