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Updated: May 26, 2025
This very brilliant process, which includes the introduction and mixture of the spiegeleisen, may occupy fifteen minutes, when the moulds are filled, and the steel ingots can be hammered or rolled the same as blooms from a puddling furnace. Mr. Bessemer explained many things, and offered many valuable suggestions. A remark of Mr.
The greatest possible accuracy was thus attainable in delivering definite quantities of molten iron into the converter for a given blow, also of spiegeleisen. This was easily accomplished by standing the ladle cars upon scales.
When all the carbon is removed, then exactly enough carbon is added by introducing molten spiegeleisen to produce steel of any desired temper with the utmost certainty. With the ordinary kinds of pig iron early in use, Bessemer's process was powerless. The old puddling process was more capable of removing phosphorus and sulphur.
No dates are given and the case has not been located in the record of U.S. Patent Commissioner's decision. Sufficient answer to Mushet was at any rate available in the fact that many hundreds of tons of excellent "Bessemer metal" made without any mixture of manganese or spiegeleisen in any form were in successful use.
We can of course also determine the titration for manganese in a chameleon solution with the greatest certainty by titrating a compound of manganese with an accurately estimated content of it, for instance, a spiegeleisen or ferromanganese; the test is carried out in the following way: The substance, which is to be examined for manganese, is dissolved by means of hydrochloric acid.
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