 |
|
 |
| |
 |
International Oils Exploration N.L. Patents |
|
Assignee: International Oils Exploration N.L.
Address: Melbourne, AU
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 3998604 |
Demineralization of brown coal |
December 21, 1976 |
| Demineralization of coal in which a slurry of the coal to be treated is ground in the presence of aqueous acid such as HCl H.sub.2 SO.sub.4 and H.sub.2 CO.sub.3 and then the slurry is subjected to froth flotation in the presence of a gas selected from Cl.sub.2, SO.sub.2, or CO.sub.2. |
| 3966561 |
Apparatus for the carbonization of coal |
June 29, 1976 |
| Carbonization of coal in travelling grate furnace with hot gas inlets below the grate. A refractory screen is provided above the grate to provide a flame propagation base for the volatile gases withdrawn from the coal on the grate. The combustion zone above the refractory screen provides |
|
|
|
 |
|
 |
|
| |
Randomly Featured Patents |
|
