STEEL LINING Russian patent published in 2004 - IPC

FIELD: metal-protection coatings.

SUBSTANCE: invention relates to preparing steel lining using alumina-containing metallurgical enterprise waste, which may be employed for industrial enameling. Objective of invention is to create steel lining with firing temperature 820-850^оС and reduced amount of expensive CoO, NiO, and MnO at the same adhesion strength and quality of coating. Steel lining of invention, comprising SiO₂, B₂O₃, Na₂O, CoO, NiO, MnO₂, CaO, K₂O, Fe₂O₃, and F^-, additionally contains alumina-containing waste from Belokalitvinsk metallurgical works composed of, wt %: SiO₂ 14,14, Al₂O₃ 72.23, Na₂O 1.43, K₂O 2.22, MgO 5.45, MnO₂ 0.91, CaO 1.67, and Fe₂O₃ 1.95 so that final composition of lining is the following, wt %: SiO₂ 42.0-48.0, alumina-containing waste 7,0-9.6, B₂O₃ 17.0-21.0, Na₂O 17.0-20.4, CoO 0.2-0.6, NiO 0.3-0.9, MnO₂ 0.3-0.7, MgO 1.0-1.6, CaO 4.6-7.0, K₂O 0.1-0.3, Fe₂O₃ 0.1-0.3, and F^- no more than 3 above 100%.

EFFECT: reduced expenses on starting materials.

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