Practical Blowpipe Assaying
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160 ASSAY OF SILVER, GOLD, MERCURY, ETC. PART III.
Carbonate of iron, or spathic iron, contains 48'22 per cent, iron, and the remainder carbon and oxygen.
Menaccanite (ilmenite), a titanic iron ore, varies in its composition ; it contains about 36 per cent, of iron on the average.
Franklinite contains about 45*16 per cent, of iron, and the remainder is made up of zinc, manganese, and oxygen.
The assay of iron ores scarcely comes under the head of the blowpipe fire assay, as the most accurate as... well as expeditious method of ascertaining the percentage of iron in a sample of ore is nearly all done by the humid process.
The reagents and apparatus required for the iron quantitative determination are necessary adjuncts to the blowpipe outfit; therefore, instead of using a tedious and a very unreliable method of extracting metallic iron by fire from its ores, the following plan has been adopted, as it affords correct results.
Assay.
Crush the iron ore in the steel mortar, and then grind to the finest possible powder in the agate mortar.
What to read after Practical Blowpipe Assaying?
You can find similar books in the "Read Also" column, or choose other free books by George Attwood to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
160 ASSAY OF SILVER, GOLD, MERCURY, ETC. PART III.
Carbonate of iron, or spathic iron, contains 48'22 per cent, iron, and the remainder carbon and oxygen.
Menaccanite (ilmenite), a titanic iron ore, varies in its composition ; it contains about 36 per cent, of iron on the average.
Franklinite contains about 45*16 per cent, of iron, and the remainder is made up of zinc, manganese, and oxygen.
The assay of iron ores scarcely comes under the head of the blowpipe fire assay, as the most accurate as... well as expeditious method of ascertaining the percentage of iron in a sample of ore is nearly all done by the humid process.
The reagents and apparatus required for the iron quantitative determination are necessary adjuncts to the blowpipe outfit; therefore, instead of using a tedious and a very unreliable method of extracting metallic iron by fire from its ores, the following plan has been adopted, as it affords correct results.
Assay.
Crush the iron ore in the steel mortar, and then grind to the finest possible powder in the agate mortar.
What to read after Practical Blowpipe Assaying?
You can find similar books in the "Read Also" column, or choose other free books by George Attwood to read onlineMoreLess
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