COMPOSITION FOR CORROSION PROTECTION OF BOTTOMS OF AUTOCLAVES USED FOR PRODUCTION OF CELLULAR CONCRETES (ALTERNATIVES) Russian patent published in 2004 - IPC

FIELD: composition for protection of metals from corrosion. SUBSTANCE: the invention is dealt with protection of metals from corrosion and may be used for corrosion protection of carbon steels at high temperature and pressure up to 1.2 MPa in the corrosion aggressive alkaline medium containing chlorine - ions and sulfates - ions, and also other aggressive components. In particular, the invention may be used for protection against the local and general corrosion of the interrail space of autoclaves producing cellular concretes. In addition it may be used for corrosion protection of the outer surface of different pipelines, in particular, for the heating mains operated in hard corrosive conditions, drying cars, in production of ceramic bricks, for protection against corrosive-erosive wear of the bottoms of automobiles of different models and in other fields. The composition of the first alternative contains the sodium viscous lubricant, blacklead, talc, magnesium oxide, zinc oxide, a mixture of sodium molybdate and potassium bichromate, organic inhibitors, benzine. Composition of the second alternative additionally contains vat residue liquor of synthetic aliphatic acid. Composition of the third alternative additionally contains vat residue liquor of synthetic aliphatic acid and asmol. EFFECT: invention allows to provide corrosion protection for carbon steels at high temperatures and pressure in the corrosion aggressive alkaline medium. 3 cl, 1 tbl