High-temperature anticorrosion paint and preparation method thereof

Abstract

A high-temperature anticorrosive coating comprises dry coating powder and a compound bonding agent added during use. The dry coating powder is composed of silicon carbide, white corundum micro-powder,alpha-Al2O3 micro-powder, chrome oxide green micro-powder, Fe2O3 and spodumene. The compound bonding agent is composed of phosphate solution and SiO2 sol, and the addition amount of the compound bonding agent is 15 to 22 percent the total weight of the dry coating powder. The method for preparing the high-temperature anticorrosive coating comprises the following steps: mixing the dry coating powder together, and stirring for 3 to 10 min to obtain uniform powder for later use; and adding the compound bonding agent when use, and uniformly stirring. The coating has high temperature resistance, high abrasion resistance and high corrosion resistance, and can be tightly adhered on the metal wall to prevent falling off when welding metal silk screen on the surface of internal cylinder, thus effectively improving the service life of the internal cylinder of cyclone cylinder of pre-heater and lowering the production cost of manufacturers.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to a high-temperature anti-corrosion coating and a preparation method thereof. technical background [0002] Cement kiln preheater cyclone is the raw material preheating device in the cement production line. Whether the inner cylinder is welded as a whole or suspended in pieces, most of the inner cylinders are made of heat-resistant and wear-resistant special alloy steel materials, which are expensive. The environment and the characteristics of the metal itself cause it to be easily corroded, have a short service life, and need to be replaced frequently, which increases the production cost and increases the burden on the enterprise. Applying an anti-corrosion layer on the surface of the metal inner cylinder can prevent the metal from being corroded and improve the metal inner cylinder. The service life of the cylinder reduces the production cost, but ordinary anti-corrosion coatings are ...

AI Technical Summary

Problems solved by technology

[0002] Cement kiln preheater cyclone is the raw material preheating device in the cement production line. Whether the inner cylinder is welded as a whole or suspended in pieces, most of the inner cylinders are made of heat-resistant and wear-resistant special alloy steel materials, which are expensive. The environment and the characteristics of the metal itself cause it to be easily corroded, have a short service life, and need to be replaced frequently, which increases the production cost and increases the burden on the enterprise. Applying an anti-corrosion layer on the surface of the metal inner cylinder can prevent the metal from being corroded and improve the metal inner cylinder. The service life of the cylinder reduces the production cost, but ordinary anti-corrosion coatings are not suitable for the harsh environment in the preheater cyclone, so it is possible to provide an anti-corrosion coating that can be used due to the high temperature resistance, wear resistance and corrosion resistance of the preheater cyclone Coatings have become a matter of great concern to cement manufacturers