| 摘要 |
<p>1456429 Desulphurizing mixtures SUDDEUTSCHE KALKSTICKSTOFF-WERKE AG 26 April 1974 [24 May 1973] 18322/74 Heading C7D A storage-stable desulphurization mixture based on calcium carbide, preferably 60-90 wt. per cent is produced by grinding the carbide hot from its manufacture in a tube mill at 50-250‹C flushed with an inert gas (N 2 , flue gas) together with a water-containing material i.e. hydrated lime, colemanite, paiderite, or other compounds containing water of crystallization. The volume of flushing gas is 2-10 times the mill volume. Further additions to vary the slag consistency produced by desulpherization of molten iron, such as carbon, limestone, dolomite, magnesite, or diamide lime may be made. Hydrogen containing additives i.e. organic polymers, polyolefins, polyamides &c. as well as urea, dicyandiamide rulamine may be added to the mixture after cooling to improve the mixture effectiveness. The mixtures must be stored out of contact with atmospheric moisture.</p> |
