Use of wrought and cast alloys and welding additives for parts contacted by oleum or concentrated hot sulphuric acid, process for the preparation of sulphuric acid and process for the concentration and purification of sulphuric acid

摘要

The present invention relates to the use of materials for parts contacted by hot, concentrated sulphuric acid and oleum having a strength of from 0 to 10% by weight and also the preparation of sulphuric acid using these materials.