| 摘要 |
The descaling of surface of processing equipment, vessels and piping on which scale, such as that which occurs in the extraction of alumina from bauxites has formed. The surface is cleaned to ensure that it is entirely free of contaminants and then is coated with a suitable resin such as an epoxy resin which is cross linked and thermosetting. The coating may be applied in two or more layers using the same or a different resin. The final layer may be one which readily detaches from the base coating when subjected to a high pressure fluid blast. |
