| Patent Number |
Title Of Patent |
Date Issued |
| 4478796 |
Production of magnesium oxide from magnesium silicates by basic extraction of silica |
October 23, 1984 |
| There is provided a process for replacing the magnesium oxide portion of a nature magnesium silicate with sodium oxide thereby to form sodium silicate which comprises melting a natural magnesium silicate and sodium carbonate at a temperature of from 1100.degree. to 1350.degree. C. until |
| 4476235 |
Green molded product containing asbestos tailings suitable for firing |
October 9, 1984 |
| There is disclosed a green moulded product suitable for preparing shaped fired units comprising (a) at least 55% to 99% by weight of non-calcined asbestos tailings, the remainder comprising (b) at least one of (i) a heat decomposable metal salt selected from sodium, potassium, lithium, c |
| 4468473 |
Protoenstatite ceramic units and process for their preparation |
August 28, 1984 |
| Protoenstatite ceramic units are prepared by compressing units of a mixture of 55 to 80 parts by weight of uncalcined demagnetized asbestos tailings with 22 to 44 parts by weight of a source of silica and from 0 to 17 parts by weight of fluxing agents and firing the units at 1250.degree. |
