| 摘要 |
<p>1,136,745. Purifying coal wastes. HOUILLERES DU BASSIN DU NORD ET DU PAS - DE - CALAIS, and SOC. D'ETUDES ET DE RECHERCHES POUR L'UTILISATION DES SOUS-PRODUITS DE L'INDUSTRIE MINIERE " SERUSPIM." 3 Jan., 1966 [12 Jan., 1965], No. 185/66. Heading C1C. [Also in Division C5] Matter comprising a liquid charged with combustible divided solids in suspension, e.g. water, which has been employed for washing raw coal, is divided into two quantities, one of which is heat-treated at at least 600‹ C., preferably 800‹ to 850‹ C., by combustion of the solids, to produce a dry, roasted material (cinders), and this product is mixed with the other quantity to form a paste, which may be discharged to waste.</p> |
