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Markku T. Saarela Patents |
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Inventor: Saarela; Markku T.
Address: Kokkokangas, FI
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4538986 |
Means for supporting the material under treatment in continuous-action heat treatment furnaces |
September 3, 1985 |
| The invention concerns a means for supporting the material being treated in continuous-action heat treatment furnaces. The support means consists of a cooled roller (5), on the periphery of which at least two cooled rollers (7) with substantially smaller diameter have been placed. The ro |
| 4526650 |
Method for regenerating pickling acids |
July 2, 1985 |
| The residual acid mixture containing metals which has been produced in the steel pickling process is regenerated to become new HF/HNO.sub.3 pickling acid by applying H.sub.2 SO.sub.4 addition and evaporation. The metal sulphate salt produced in evaporation is converted into scarcely solu |
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