Summary and analysis of the application of anticor

Summary and analysis of the application of anti-corrosion coatings in aluminum smelters

in industry, aluminum smelting is mainly based on electrolysis, which uses pure aluminum oxide as raw material to produce aluminum by electrolysis. Therefore, the first step of aluminum smelting is to produce aluminum oxide. Zhisheng Weihua smelting anti-corrosion coating experts pointed out that at present, almost all aluminum oxide in the world is produced by alkali method. Aluminum electrolysis method is an electrolyte composed of aluminum oxide as raw material and cryolite as flux. Under the condition of 950-970 ℃, aluminum in the electrolyte melt is decomposed into aluminum and oxygen by electrolysis. Aluminum precipitates in the form of liquid phase at the carbon cathode, and oxygen escapes in the form of carbon dioxide gas on the carbon anode. High temperature equipment, high-temperature smelting conditions, and corrosion resistance of high-temperature aluminum industry have become difficult problems in industrial aluminum smelting. Zhisheng Weihua anti-corrosion coating personnel have tracked and analyzed the aluminum smelting industry for many years, and summarized the summary and analysis of the application of ZS anti-corrosion coating in the aluminum smelting industry

1. Anti corrosion of aluminum smelting cooling tower: zs-711 inorganic anti-corrosion coating adopts IPN interpenetrating anti-corrosion network structure technology, which is the latest international anti-corrosion and anti-corrosion technology. The solution is a membrane solution composed of a new inorganic anti-corrosion chelate specially made by Zhisheng Weihua, which is based on the siloxy Si o Si bond. Zs-711 inorganic anti-corrosion coating has a finer film, good anti-corrosion function, strong adhesion and high temperature resistance. Zs-711 inorganic anti-corrosion coating has more than 10 years of corrosion resistance and long service life in salt fog acid gas, underground burial, marine seawater, chemical acid and alkali, petroleum liquid, sewage and wastewater

2. Anti corrosion of heat conducting pipe of aluminum radiator: zs-722 acid resistant heat conducting and anti-corrosion coating contains metal oxide materials and chelating grafting film-forming solution. The coating is firmly bonded to the substrate, without cracks and holes, forming a dense adhesive anti-corrosion coating, and the coating is long-term temperature resistant 9 Effective elasticity and hysteresis loss: it can reach 750 ℃ on the leather tensile testing machine. Zs-722 acid resistant, heat conductive and anti-corrosion coating adopts film-forming solution with high conductivity and filler with high heat transfer and high heat radiation. The conductivity of cured coating (70 ℃) can reach 50w/m.k, and the thermal radiation coefficient of coating blackbody can reach 0.92 ε， The heat exchange rate can be increased by more than 10% compared with the base material without zs-722 acid resistant, heat conductive and anti-corrosion coating, and more than 50% on some materials. Zhisheng Weihua zs-722 acid resistant, heat conductive and anti-corrosion coating is an inorganic modified chelating film-forming solution and acid resistant inorganic oxide. In addition to high concentrations of acid and alkali and hydrofluoric acid, it can withstand the corrosion of other acids and bases for a long time and has a long anti-corrosion life

3. Anti corrosion of aluminum smelting electrolyzer: zs-811 high temperature resistant anti-corrosion coating adopts the special high temperature resistant solution made by Zhisheng Weihua company and filled with nano passivated metal oxide. The temperature resistance can reach 2300 ℃, which can be used for long-term anti-corrosion in fire. The coating is dense and low oxygen permeability, which prevents the oxidation of materials under high temperature, acid and alkali gas corrosion, sulfur and carbon monoxide oxidation corrosion, and the hardness reaches 8h, Weihua zs-811 high temperature resistant and anti-corrosion coating is a water-based inorganic environmental protection coating. There is no volatilization of any harmful substances at room temperature and high temperature. Zs-811 high temperature resistant and anti-corrosion coating is self curing at room temperature. Its physical properties, chemical properties and service properties have reached the advanced level of similar products in the world. At present, there is no definite information level in the approval of Suning bank

4. Anti corrosion of inner wall of aluminum smelting package: zs-822 composite ceramic high-temperature anti-corrosion coating forms a dense and firm coating after curing, which has excellent corrosion resistance, long-term resistance to strong acid and alkali corrosion, and long-term temperature resistance. 1 but it is certain that it can withstand the corrosion of organic solvents under high temperature environment, water and oil resistance, high-temperature corrosion, so that its comprehensive thermodynamic properties match the physical properties of the matrix, and can well protect the matrix

5. Corrosion prevention of aluminum workshop floor and steel frame structure: zs-1034 acid and alkali resistant anti-corrosion coating, acid and alkali resistant, solvent gas and solution corrosion prevention. Weihua zs-1034 acid and alkali resistant anti-corrosion coating is used as a special anti-corrosion coating in the corrosive environment of organic acid, inorganic acid, salt, alkali and organic solvent, which can effectively prevent electrochemical and chemical corrosion and protect the substrate for a long time

6. Anti corrosion of aluminum smelting flue gas: zs-1041 flue gas anti-corrosion coating has excellent resistance to chemical corrosion, especially acid-base and condensing acid corrosion; Zs-1041 flue gas anti-corrosion coating also has high flexural resistance and thermal expansion and denaturation resistance, and can resist the inevitable vibration of the steel chimney in operation although it is reinforced; The smoke anticorrosive coating has very good adhesion with the substrate. Acid and alkali corrosion resistance. At the same time, zs-1041 flue gas anti-corrosion coating has excellent performance of high temperature resistance and temperature sudden change resistance, which can meet the long-term working temperature fluctuation between 45-600 ℃, short-term operating temperature 800 ℃, and protective action temperature 850 ℃. It can be seen that zs-1041 flue gas anti-corrosion coating will become the best choice for the anti-corrosion treatment of flue and chimney