| 摘要 |
<p>The invention concerns an apparatus (20) comprising: at least a first device (25) for volumetric measurement of the additive based on a predetermined amount of liquid, said device (25) being designed to operate said measurement according to a relatively wide range of additive proportions, for example from 2 to 10 %; at least a second device (24) of similar type, designed to operate said measurement according to a relatively narrow range of additive proportions representing a fraction of additive percentage, ranging from 0.2 to 1.9 %, both said devices (24, 25) being mounted in series; means (26, 27) forming branch connections, for collecting the additive dose determined by one or the other measuring devices (24, 25) and mixing said dose to said amount of liquid downstream of the device (25) located furthest downstream; means (28) for subsequently mixing the amount of liquid containing the additive with other constituents of the material, for forming the latter.</p> |
