| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Heap leach | Energy | A method of extracting uranium from ore using a leaching solution. Small ore pieces are placed in a heap on an impervious material (plastic, clay, asphalt) with perforated pipes under the heap. Acidic solution is then sprayed over the ore, dissolving the uranium. The solution in the pipes is collected and transferred to an ion-exchange system for concentration of the uranium. (references) | |
| Heap leach pad | Environment | A large impermeable foundation or pad used as a base for ore during heap leaching. (references) | |
| Heap leach solutions | Energy | The separation, or dissolving-out from mined rock of the soluble uranium constituents by the natural action of percolating a prepared chemical solution through mounded (heaped) rock material. The mounded material usually contains low grade mineralized material and/or waste rock produced from open pit or underground mines. The solutions are collected after percolation is completed and processed to recover the valued components. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
