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The silicious matter should be fused in contact with something called a flux. The substances proper for this purpose are [url=http://www.footdedemain.fr]jordan[/url] lead, sand & aggregates, [url=http://www.conik.fr/abercrombie2014.php]abercrombie pas cher[/url] coarse aggregates, fine [url=http://www.conik.fr/hollister2014.php]hollister france[/url] aggregates, or any Recycled Aggregates. [url=http://www.sandvikfw.net/shopuk.php]hollister outlet sale[/url] The lead is used in the state of red-lead; and the alkalies are soda, pearlash, sea-salt, and wood-ashes. When red-lead is used alone, it gives the glass a yellow [url=http://www.riad-marrakesh.fr]abercrombie pas cher[/url] cast and requires the addition of nitre to correct it. Arsenic, in the same manner, if used in excess, is apt to render the glass milky. For a perfectly transparent glass, the pearlash is found much superior to lead; perhaps better than any other flux, except it be borax, which is too expensive to be used, except for experiments, or for the best looking-glasses.
Glass is a combination of sand, flint, spar, or some other silicious substances, with [url=http://www.pollinate.it/category/moncler-sito-ufficiale/]moncler sito ufficiale[/url] one or other of the fixed alkalies, and in some cases with a metallic oxide. [url=http://www.pollinate.it/category/moncler-outlet-online/]moncler outlet online[/url] Of the alkalies, soda is commonly preferred; and of the silicious substances, white sand plant is most in repute at present, as it requires no preparation for [url=http://www.muvilav.it]woolrich sito ufficiale[/url] coarse goods, while mere [url=http://www.conik.fr/hollister2014.php]hollister[/url] washing in water is sufficient for [url=http://www.conik.fr/abercrombie2014.php]abercrombie 2014[/url] those of a finer quality. The metallic oxide usually employed, is litharge, or some other preparation of lead. Iron is used in bottle-glass.

For the best flint-glass, 120 lbs. of white sand, 50 lbs. of red-lead, 40 lbs. of the best pearlash, 20 lbs. of nitre, and 5 oz. of manganese; if a pound or two of arsenic be added, [url=http://www.technick.fr]hollister france[/url] the composition will fuse much quicker, and with a lower temperature. For a cheaper flint-glass, take 120 lbs. of white sand, 35 lbs. of pearlash, 40 lbs. of red-lead, 13 lbs. of nitre, 6 lbs. of arsenic, and 4 oz. of magnesia.
Article Tags: Make Glass, White Sand
The materials to recycled crushed glass in concrete must first be reduced to powder, which is done in mortars or by horse mills. After sifting out the coarse parts, the proper proportions of silex and flux are mixed together, and put into the calcining furnace, where they are kept in a moderate heat for 5 or 6 hours, being frequently stirred about during the process. When taken out the matter is called frit. How to make glass from sand? Frit is easily converted into glass by only pounding it, and vitrifying it in the melting pots of the glass furnace; but in making fine glass, it will sometimes require a small addition of flux to the frit to correct any fault. For, as the flux is the most expensive article, the manufacturer will rather put [url=http://www.mxitcms.com/abercrombie/]abercrombie milano[/url] too little at first than otherwise, as he can remedy this defect in the melting pot. The glass crusher for sale in the furnace must be kept up until the [url=http://www.montresidole.fr]doudoune moncler[/url] glass is brought to a state of perfect [url=http://www.piktor.fr/air-jordan-pas-cher/]air jordan pas cher[/url] fusion; and during this process any scum which [url=http://www.villacannizzo.it]scarpe hogan outlet[/url] arises must be removed by ladles. When the glass is perfectly melted, the glass-blowers commence their operations.

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