| 摘要 |
<p>A process is disclosed for the subsequent treatment of small glass particles, for example recycled glass granules with a grain size in a range of between 0.3 and 4 mm or glass beads with diameters in a range of between 0.1 and 2.3 mm. In order to produce any mouldings from such glass particles with a relatively low energy consumption, the surface of the glass particles is brought into contact with a low melting point silicate flux or varnish, for example of lead borosilicate, sodium borosilicate, fluorine borosilicate or their mixtures in an amount from 2 to 9 % by weight, preferably 3 to 5 % by weight, and the glass particles are then exposed to a thermal treatment in a range from 540 to 800 DEG C, preferably from 560 to 660 DEG C, during which the low melting point silicate flux or varnish is made to melt on the surfaces of the glass particles.</p> |
