Unshaped refractory compositions useful as jointing and moulding compositions
US4308067A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1980 |
| Grant date | Dec 29, 1981 |
| Priority date | — |
| Expiry date | Jun 4, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/3418
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention refers to an unshaped refractory composition which can be used in the construction of glass furnace hearths and which comprises by weight: PA1 (a) 55 to 99% of particles of a fused cast refractory material, the fused cast refractory material including a vitreous phase and containing, as main constituents, ZrO.sub.2, Al.sub.2 O.sub.3, SiO.sub.2, and optionally Cr.sub.2 O.sub.3 ; PA1 (b) 0 to 5% of a hydraulic cement; PA1 (c) 1 to 15% of a filler consisting of very fine, substantially spherical particles of a metal oxide; PA1 (d) 0 to 25% of fine particles of a size less than 40 microns chosen from particles of ZrO.sub.2, Al.sub.2 O.sub.3, Cr.sub.2 O.sub.3, fused cast refractory products comprising by weight 75-85% ZrO.sub.2, 2-8% SiO.sub.2, 9-17% Al.sub.2 O.sub.3, 0.5-0.7% of other oxides, and mixtures thereof; and PA1 (e) 0.01 to 1% of a surface-active agent, the amount being with respect to the total weight of the constituents (a), (b), (c) and (d).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.