COMPOSITION AND METHOD FOR PRODUCING OF DINAS REFRACTORY Russian patent published in 2005 - IPC

FIELD: refractory industry, in particular dinas refractory for cladding of glass-melting furnace, arc-furnace, cold-charge furnace, coking plant etc.

SUBSTANCE: invention relates to batch composition and method for production of dinas refractory. Claimed batch contains (mass %) highly refined flaked slates ≤0.4; iron-lime mixture of grade ≤0.09 mm and graded crystal quartzite of grade ‹0.5 mm 44-57 in total, including grade ‹0.09 mm 24-36; grade of 0.5-2.0 mm 12-55; and grade of 2-3.2 mm ≤28. Method includes feeding of batch components, mixing, press forming of articles, drying at 50-220⁰C, annealing at 1200-1450⁰C for 90-112 h, and holding at 1375-1450⁰C for 2-88 h. Then dinas bodies are cooled for 46-132 h.

EFFECT: finished materials with improved refractory quality and reduced toxic burning products of adhesive.

13 cl