Tube Milling a Treatise On the Practical Application of the Tube Mill to Metall
Tube Milling a Treatise On the Practical Application of the Tube Mill to Metall
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In our eReader you can find the full English version of the book. Read Tube Milling a Treatise On the Practical Application of the Tube Mill to Metall Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Tube Milling a Treatise On the Practical Application of the Tube Mill to Metall
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This is roughly 5 per cent, of the monthly mill run. The pebbles cost 60 pesos per ton, or 5, 400 pesos per month. The mine rock averages $6 gold per ton, the increase in the bullion return con- tributed by the crushed rock being about $6, 000 gold per month. Allowing the cost of mining and handling the rock to equal the value of the gold extracted, it is apparent that the cost of the pebbles, or 5, 400 pesos is saved per month.
Manganese or chrome-steel balls offer the best substitute for flin...t pebbles and from present indications the art of tube milling will in the future be more influenced by the use of this kind of grinder than from any other innovation. Steel being from two and one- half to three times the weight of flint, a mill, to hold the same load of balls, must be made of greater massiveness and strength to withstand this increased weight. If a 4-in. Flint pebble with a 5-ft. Diameter mill has been found to be an effective grinder for a given ore, we may with the same diameter mill use a 1-in.
What to read after Tube Milling a Treatise On the Practical Application of the Tube Mill to Metall?
You can find similar books in the "Read Also" column, or choose other free books by Algernon Del Mar to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This is roughly 5 per cent, of the monthly mill run. The pebbles cost 60 pesos per ton, or 5, 400 pesos per month. The mine rock averages $6 gold per ton, the increase in the bullion return con- tributed by the crushed rock being about $6, 000 gold per month. Allowing the cost of mining and handling the rock to equal the value of the gold extracted, it is apparent that the cost of the pebbles, or 5, 400 pesos is saved per month.
Manganese or chrome-steel balls offer the best substitute for flin...t pebbles and from present indications the art of tube milling will in the future be more influenced by the use of this kind of grinder than from any other innovation. Steel being from two and one- half to three times the weight of flint, a mill, to hold the same load of balls, must be made of greater massiveness and strength to withstand this increased weight. If a 4-in. Flint pebble with a 5-ft. Diameter mill has been found to be an effective grinder for a given ore, we may with the same diameter mill use a 1-in.
What to read after Tube Milling a Treatise On the Practical Application of the Tube Mill to Metall?
You can find similar books in the "Read Also" column, or choose other free books by Algernon Del Mar to read onlineMoreLess
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