| 摘要 |
<p>A gas injector 3, for example of oxygen, is sheathed in a sleeve 4 for conveying a flow of the liquid under treatment (for example of lead), taken up by 7 and circulated by the pump 8. Thus the extremity of the injector is protected by removing the bubbles of oxygen. …<??>Application especially to the refining of metals, especially non-ferrous metals, to nutrient liquids, to paper pulp and to the production of sulphur. …<IMAGE>… </p> |
