Anteil von säurebeständigen refraktären gusslichen Gusswaren

Acid-resistant castables are made by mixing refractory and acid-resistant aggregates with some coagulants. Bei Verwendung, water glass is used as a coagulant. It is easy to use and simple to operate, and has a relatively high acid resistance.

Anteil von säurebeständigen refraktären gusslichen Gusswaren

Acid-resistant refractory aggregate 60%-70%, Pulver 30%-40%, added density of 1.38-1.42g/ sodium silicate solution 13%-16%, sodium fluorosilicate as a hardening accelerator, its addition amount is 10%-12% of the mass of the sodium silicate solution, and the castable refractory material that can withstand the corrosion of 800~1200℃ acidic medium (nitric acid, Salzsäure, sulfuric acid, acetic acid, usw.) is called refractory acid-resistant castable. It is made of liquid instant powdered sodium silicate as a binder, acidic or plate-acidic refractory materials as aggregates and powders, and a small amount of accelerator. Jedoch, this type of castable is not resistant to corrosion by alkali, hot phosphoric acid, hydrofluoric acid, and high-fat environments. The raw materials for this type of castable are rich in source and low in price, so they are widely used in some thermal equipment such as metallurgy, Chemieindustrie, Petroleum, and light industry.