Corrosion resistance of metal and nonmetal materials in technological media of defluorinated phosphate production

For the purpose of selecting construction materials and chemical protection means for technological equipment subjected to the effect of fluorine-containing media the corrosion resistance of stainless steels, alloys and non-metallic materials in highly aggressive solutions of hydrofluoric and hydrosilicofluoric acids. Most corrosion resistant is the KhN60MB alloy at temperatures lower than 80 deg C. Rubbers IRP-1390, 51-1632, 51-1639 as well as pentaplast possess high chemical resistance