Lithium metatungstate a safe alternative for washability
Conference
·
OSTI ID:83295
Lithium metatungstate (LMT), originally developed for the separation of heavy mineral sands, has been determined to be a safe and effective alternative to the traditional organic liquids used in determining the washability characteristics of coal. LMT is a non-flammable, very soluble inorganic salt which, when dissolved in water, can be used to replace organic liquids traditionally utilized for the gravity separation procedure. The concentrated LMT solution is commonly produced at a specific gravity of 3.0 g/cc. Solutions with lower specific gravities can be prepared by dilution with distilled water. Solutions with higher specific gravities can be prepared by concentrating the solutions through a reverse osmosis (RO) technique or an evaporation process. LMT was originally developed for the separation of heavy mineral sands, however, due to the similarities between the uses and from positive results of experimental data. It was found that this technology has applications for the gravity separation of coal and other minerals. The LMT technology is discussed.
- OSTI ID:
- 83295
- Report Number(s):
- CONF-9505231--
- Country of Publication:
- United States
- Language:
- English
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