REFRACTORY CEMENT INCORPORATING FLUXING COMPONENT

• US 3,841,886 A
• Filed: 12/15/1972
• Issued: 10/15/1974
• Est. Priority Date: 04/13/1972
• Status: Expired due to Term

• Current Assignee: Harley W. Burr
• Original Assignee: Harley W. Burr
• Inventors: Burr, Harley W.
• Primary Examiner(s): Gantz, Delbert E.
• Assistant Examiner(s): Hellwege, James W.
• Application Number:
  US05/315,712
• Time in Patent Office: 669 Days
• Field of Search: 106/109,110,63
• US Class Current: 106/772
• CPC Class Codes: C04B 14/22 Glass ; Devitrified glass
• CPC Class Codes: C04B 14/365 Gypsum synthetic gypsum C04B18/0445, C04B18/064
• CPC Class Codes: C04B 18/025 Grog
• CPC Class Codes: C04B 28/14 containing calcium sulfate cements gypsum-paper plates E04C
• CPC Class Codes: C04B 32/005 Artificial stone obtained by melting at least part of the composition, e.g. metal C04B28/36 and C03C take precedence; cast stone from molten slag C04B5/00; artificial stone obtained by melting the polymeric ingredient of the composition C04B26/00
• CPC Class Codes: C04B 33/02 Preparing or treating the raw materials individually or as batches
• CPC Class Codes: C04B 35/00 Shaped ceramic products characterised by their composition porous ceramic products C04B38/00; ceramic articles characterised by particular shape, see the relevant classes, e.g. linings for casting ladles, tundishes, cups or the like B22D41/02; ceramic substrates for microelectronic semi-conductors H01L23/15; Ceramics compositions containing free metal bonded to carbides, diamond, oxides, borides, nitrides, silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides or sulfides other than as macroscopic reinforcing agents C22C; shaping of ceramics B28B; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products chemical preparation of powders of inorganic compounds C01; infiltration of sintered ceramic preforms with molten metal C04B41/51
• CPC Class Codes: C04B 40/0268 Heating up to sintering temperatures C04B41/0072 takes precedence
• CPC Class Codes: C09K 8/46 containing inorganic binders, e.g. Portland cement

Abstract

Refractory properties are imparted to a cement prepared from non-refractory CaSO4 by incorporation of a primary fluxing component and grog. The composition can be formulated for various uses, e.g., as a structural board, as a castable material for forming a refractory mass and as an oil well casing cement.

Claims

1. A STRUCTURAL MEMBER, COMPRISING, EXCLUSIVE OF H2O, ABOUT 60-90 WEIGHT PERCENT CALCIUM SULFIATE AND ABOUT 40-10 WEIGHT PERCENT FLUX AND GROG MATERIAL, SAID CALCIUM SULFATE CONTAINING WATER OF HYDRATION, SAID FLUX AND GROG MATERIAL COMPRISING ABOUT 0.2 TO ABOUT 50 WEIGHT PERCENT PRIMARY FLUXING COMPONENT AND ABOUT 99.8 TO ABOUT 50 WEIGHT PERCENT GROG COMPONENT, AND AN AMOUNT OF H2O SUFFICIENT TO FORM SAID STRUCTURAL BOARD, SAID FLUXING COMPONENT BEING PERCENT IN SUFFICIENT AMOUNT TO PROVIDE AT LAST 2 WEIGHT PERCENT BASED ON THE CONTENT OF SAID CALCIUM SULFATE IN AID COMPOSITION.

2. The composition of claim 1 wherein said flux and grog material comprises substantially separately mixed primary flux and grog.

3. The composition of claim 1 wherein said flux and grog material comprise substantially a natural mineral having both flux and grog properties.

4. The composition of claim 1 wherein said flux is a metal compound having a fusion point below 1,450*C when fired with calcium sulfate.

5. The composition of claim 1 in which said flux is a compound selected from the oxides and carbonates of a metal from periodic groups IA, IB, IIB, IVA, IVB, VIIB and VIII, and any other inorganic compound of a metal from periodic groups IA, IB, IIA, IIB, IVA, IVB, VIIB and VIII, wherein said compound has a fusion point below 1,450*C when fired with calcium sulfate.

6. The composition of claim 1 in which said flux is a compound of an alkali metal.

7. The composition of claim 1 in which said flux is an alkali metal oxide.