Lectures On Explosives a Course of Lectures Prepared Especially As a Manual An
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300 LECTURES ON EXPLOSIVES.
The reddish tinge often observed in dynamite is due to a little iron contained in the kieselguhr.
In a pure and dry condition, kieselguhr will absorb three times its weight of nitroglycerine, and will retain it even at the highest ordinary temperature.
Before the guhr can be used for making dynamite, it must be calcined in order to eliminate the moisture and free it from the organic matter it contains.
The calcination is conducted in a reverberatory furnace, the guhr... being spread over the bottom of the furnace to a depth of four or five inches, and heated to dull redness. The time of calcination depends upon the quality of the guhr, which from time to time is turned over to insure uniformity. Calcined guhr should not contain more than 0. 5 per cent of moisture and organic matter. After being calcined, the guhr is crushed between rollers, passed through fine sieves, dried, and packed away in bags, care being taken to prevent it from absorbing moisture.
Before being mixed with the dope, the nitroglycerine should stand for a day or two to " clear, " and should be entirely free from water, since dynamite containing over 0.
What to read after Lectures On Explosives a Course of Lectures Prepared Especially As a Manual An?
You can find similar books in the "Read Also" column, or choose other free books by Willoughby Walke to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
300 LECTURES ON EXPLOSIVES.
The reddish tinge often observed in dynamite is due to a little iron contained in the kieselguhr.
In a pure and dry condition, kieselguhr will absorb three times its weight of nitroglycerine, and will retain it even at the highest ordinary temperature.
Before the guhr can be used for making dynamite, it must be calcined in order to eliminate the moisture and free it from the organic matter it contains.
The calcination is conducted in a reverberatory furnace, the guhr... being spread over the bottom of the furnace to a depth of four or five inches, and heated to dull redness. The time of calcination depends upon the quality of the guhr, which from time to time is turned over to insure uniformity. Calcined guhr should not contain more than 0. 5 per cent of moisture and organic matter. After being calcined, the guhr is crushed between rollers, passed through fine sieves, dried, and packed away in bags, care being taken to prevent it from absorbing moisture.
Before being mixed with the dope, the nitroglycerine should stand for a day or two to " clear, " and should be entirely free from water, since dynamite containing over 0.
What to read after Lectures On Explosives a Course of Lectures Prepared Especially As a Manual An?
You can find similar books in the "Read Also" column, or choose other free books by Willoughby Walke to read onlineMoreLess
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