The Stamp Milling of Gold Ores;
The Stamp Milling of Gold Ores;
The book The Stamp Milling of Gold Ores; was written by author Here you can read free online of The Stamp Milling of Gold Ores; book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Stamp Milling of Gold Ores; a good or bad book?
Where can I read The Stamp Milling of Gold Ores; for free?
In our eReader you can find the full English version of the book. Read The Stamp Milling of Gold Ores; 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 The Stamp Milling of Gold Ores;
In our eReader you can find the full English version of the book. Read The Stamp Milling of Gold Ores; 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 The Stamp Milling of Gold Ores;
What reading level is The Stamp Milling of Gold Ores; book?
To quickly assess the difficulty of the text, read a short excerpt:
Plan, Part Section.
Double-discharge Mortar Used at The Harriettville MiU.
The coffer or mortar box is 5 inches deep, while the dies, which are octagonal, are 4 Inches thick. The shoes have round tongues, and are 9^ inches in diameter by 9 inches high.
A shoe weighs 172 pounds, and a die 84 pounds. Both are made of best quality white iron, fagoted, not cast. This costs 16 shillings per hundredweight (112 pounds). The shoes wear evenly, but the dies soon develop an irregular surface (" cupping")... and exhibit much variation in their time of ser- DOUBLE-DISCHARGE MORTARS IN VICTORIA. 157 vice. The average wear of iron per ton of ore crushed is at the rate of 9.8 ounces of the shoe and 3.4 ounces of the die.
The ore being of comparative softness, the wear of the shoe must be considered as excessive. This result is due to two causes, the non-employment of a rock-breaker and the use of an identical material in both shoe and die. By the more uniform breaking of the millstuff the shoe can be saved much violent work, and by making the die of a metal less hard and more tough than the shoe, the latter would be found to last longer and to cause the die itself to retain a more even wearing surface.
What to read after The Stamp Milling of Gold Ores;?
You can find similar books in the "Read Also" column, or choose other free books by T a Thomas Arthur Rickard to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Plan, Part Section.
Double-discharge Mortar Used at The Harriettville MiU.
The coffer or mortar box is 5 inches deep, while the dies, which are octagonal, are 4 Inches thick. The shoes have round tongues, and are 9^ inches in diameter by 9 inches high.
A shoe weighs 172 pounds, and a die 84 pounds. Both are made of best quality white iron, fagoted, not cast. This costs 16 shillings per hundredweight (112 pounds). The shoes wear evenly, but the dies soon develop an irregular surface (" cupping")... and exhibit much variation in their time of ser- DOUBLE-DISCHARGE MORTARS IN VICTORIA. 157 vice. The average wear of iron per ton of ore crushed is at the rate of 9.8 ounces of the shoe and 3.4 ounces of the die.
The ore being of comparative softness, the wear of the shoe must be considered as excessive. This result is due to two causes, the non-employment of a rock-breaker and the use of an identical material in both shoe and die. By the more uniform breaking of the millstuff the shoe can be saved much violent work, and by making the die of a metal less hard and more tough than the shoe, the latter would be found to last longer and to cause the die itself to retain a more even wearing surface.
What to read after The Stamp Milling of Gold Ores;?
You can find similar books in the "Read Also" column, or choose other free books by T a Thomas Arthur Rickard to read onlineMoreLess
Write Review:
Guest
Read Also
10 / 10
9 / 10
User Reviews: