| 摘要 |
<p>The process comprises: a) introduction of the precious metals, in the form of laminas, leafs or wafers in a container provided with grinding means; b) addition to said container with the precious metal of a liquid medium of a density between 0.61 g/ml and 1.50 g/ml at room temperature; c) grinding of the precious metal in the container, in the presence of the liquid medium, until the former is transformed into a product consisting of precious metal particles of the desired size; d) allowing said particles to sediment; e) extraction of the liquid medium; and f) removal of the precious metal transformed into fine particles with an average size between 0.00020 mm- and 0.6 mm<2>, completely dry. These particles can be added to a liquid medium such as a perfume, an essence, cava, champagne, liquor, edible oil, paint or the like.</p> |
