Available online
Description
The programme examines various methods by which desired valuable minerals are separated from the material surrounding them.
The programme examines various methods by which desired valuable minerals are separated from the material surrounding them.
| Module code and title: | T352, Materials processing |
|---|---|
| Item code: | T352; 03 |
| First transmission date: | 27-03-1979 |
| Published: | 1979 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:24:00 |
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| Producer: | Nat Taylor |
| Contributors: | Ian Boustead; Meurig Jones |
| Publisher: | BBC Open University |
| Keyword(s): | DMS; Dense Medium Separator; Hydrocyclone; Mineral; Ore mining; Ores; Shaking table |
| Footage description: | Film shots of ore being carried by conveyor belt to a crusher at the Wheal Jane mine in Cornwall. Film of the crushing machine at work. Commentary by Ian Boustead introduces the programme. Meurig Jones, Royal School of Mines, holding a sample of ore and one of rock, explains that exploiting colour differences is a possible method for separating different materials. He also points out the major drawbacks of this method. Jones and Boustead examine particle size as a possible basis for a separation method. Shots of minerals being separated by sieves. Jones goes on to look at a hydrocyclone, an apparatus which separates particles too small for efficient use of a sieve. He explains how the machine works. Jones discusses the possibility of using density differences as a basis for separating minerals. He demonstrates the concept by placing a mixture of sawdust and minerals in a jug of water. Jones goes on to demonstrate the method again, this time using a liquid medium which has actual industrial possibilities. Finally he shows a small scale industrial apparatus which works on this principle, pointing out its various component parts. Ian Boustead points out the limits of the dense medium separation technique. Jones explains and demonstrates a separation method which relies on density coupled with size and particle shape. Shots of a jig, the machine which performs this separation process. Jones demonstrates a shaking table apparatus, this machine is closely related to the jig above. Meurig Jones next demonstrates and explains a separation technique which relies on magnetism to separate one mineral from another. He then shows an industrial machine which works on this principle. Finally Jones explains and demonstrates a chemical method of separating minerals. Shots of a froth floatation machine which works on this principle. Ian Boustead sums up the programme. |
| Master spool number: | 6HT/72749 |
| Production number: | 00525_5327 |
| Videofinder number: | 1430 |
| Available to public: | no |
