I would like to ask whether enamel can be used on sulfuric acid reaction vessels?

Enameled equipment is made by applying a ceramic glaze with a high silicon content to the surface of metal, and then firing it at 950°C to ensure that the glaze adheres tightly to the surface of the metal core. Therefore, it boasts the dual advantages of glass-like chemical stability and metal strength. Glass-lined equipment is widely used in industrial production and scientific research across sectors such as chemicals, pharmaceuticals, dyes, pesticides, organic synthesis, petroleum, food manufacturing, and the defense industry for processes including reaction, evaporation, concentration, synthesis, extraction, polymerization, saponification, mineralization, chlorination, and nitration, serving as a substitute for expensive stainless steel and non-ferrous metals. Corrosion resistance: It exhibits excellent resistance to corrosion in various concentrations of inorganic acids, organic acids, organic solvents, and weak bases. However, it is not suitable for strong bases, hydrofluoric acid, and fluoride-containing media, as well as phosphoric acid at temperatures above 180°C and concentrations above 30%.

Sure, enamel tanks can withstand it

It might not be very suitable. We used waste sulfuric acid with a concentration of 40-60% in the reactor, at a temperature of 180 degrees. Within less than a month, the glaze became rough, so we stopped using it. I’m also looking for materials now.

A quality glass-lined reactor can handle the task

Our enamel reactors are widely used for the treatment of waste acids, as well as various strong acids and strong bases... It’s necessary to find an enamel factory with high quality