Claims
- 1. In the production of phosphorus wherein a phosphorus-containing material is electrothermally processed to produce phosphorus and a molten slag, the phosphorus is separated and the molten slag is solidified, the improvement which comprises adjusting the SiO.sub.2 content and adding to the separated slag at least one modifying oxide selected from the group consisting of ZnO, ZrO.sub.2, Cr.sub.2 O.sub.3 and TiO.sub.2 to form a molten mass having the approximate composition
- ______________________________________CaO [10-60] 20-35 by weightSiO.sub.2 [35-70] 40-60Al.sub.2 O.sub.3 1-10ZnO+ZrO.sub.2 +Cr.sub.2 O.sub.3 +TiO.sub.2 0.1-10oxide impurities, <2,Fe.sub.2 O.sub.3 and Na.sub.2 O______________________________________
- the weight ratio for CaO: SiO.sub.2 being about 1:2, and solidifying said mass by melt spinning and attenuating to form calcium silicate glass fibers.
- 2. The process of claim 1, wherein
- ______________________________________CaO 15-50% by weightSiO.sub.2 40-65Al.sub.2 O.sub.3 1-10]ZnO+ZrO.sub.2 +Cr.sub.2 O.sub.3 +TiO.sub.2 = 0.5-7 andoxide impurities = <1______________________________________ and an aqueous slurry of an inorganic binder selected from the group consisting of Portland cement, alumina cement, calcium silicate, lime and gypsum is cast about said fibers as a reinforcement to form a building material.
Priority Claims (7)
Number |
Date |
Country |
Kind |
2427770 |
Jun 1974 |
DT |
|
2318512 |
Mar 1974 |
DT |
|
69740 |
Mar 1974 |
LU |
|
142427 |
Mar 1974 |
BE |
|
3598/74 |
Mar 1974 |
CH |
|
74 09984 |
Mar 1974 |
FR |
|
7404191 |
Mar 1974 |
NL |
|
Parent Case Info
This application is a continuation-in-part of Application Ser. No. 726,340, filed Sept. 24, 1976, which is a continuation of Application Ser. No. 584,242, filed June 5, 1975, both now abandoned.
US Referenced Citations (12)
Foreign Referenced Citations (2)
Number |
Date |
Country |
1,447,653 |
Sep 1965 |
FR |
199,368 |
Jul 1967 |
SU |
Non-Patent Literature Citations (3)
Entry |
Tobol' SKII, G.F. "Technological Production & Properties of Mineral Wool from Phosphorus Slags"-Chem. Abstracts 73, 123191c. |
Volf, M. B. - Technical Glasses- (1961) London, p. 425. |
Ceramic Industry-Jan. 1967, Handbook of Ceramic Raw Materials, p. 129, "Phosphate Slag". |
Continuations (1)
|
Number |
Date |
Country |
Parent |
584242 |
Jun 1975 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
726340 |
Sep 1976 |
|