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By Sheridan Muspratt
This ancient ebook could have a variety of typos and lacking textual content. dealers can obtain a loose scanned reproduction of the unique booklet (without typos) from the writer. no longer listed. no longer illustrated. Excerpt: ...off. it's attainable to build coolers by way of easily lining a wood cistern with lead: such are used for crystallizing quite a few salts; however it is a question whether or not they may be suggested, inasmuch because the cooling has to be very sluggish, because of the undesirable engaging in caliber of the wooden which varieties the coating to the lead. In such a lot vitriol works coolers are utilized in reference to the pan or pans. believe they're referred to as No. 1 and No. 2, the mode of operating resem bles that of the pans first defined; that's, No. 1 is meant to be cool sufficient to undergo bottling. while this is often performed, the contents of the higher cooler, or No. 2, is now run into No. 1, whereas No. 2 is now able to obtain a clean volume from the decrease concentrating pan. it is going to therefore be visible that during operating a collection of concentrating pans and their accompaniments, 4 phases can be famous. the higher pan in part concentrates the acid prepared for the decrease pan, which then completes the focus. From this reduce pan it truly is run into the higher cooler, the place it loses the better part of its warmth, and at last it truly is run into the decrease cooler, the place it continues to be till relatively chilly or approximately so. Hie approach simply defined is in consistent use in a few works, yet isn't in any respect common, every one producer proscribing the level of his gear to his desires. The association most commonly obvious, specially in small works, is a unmarried boiling-down pan, because it is technically termed; the warmth passing underneath it up one flue and returning to an identical finish down one other, and then it passes to the chimney. This pan is followed by way of one cooler. The uncooked acid from the chamber is administered into this unmarried pan, the place it's centred as much as the right kind element, and then it really is run into the cooler, the place it remains until eventually chilly; and ...
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