2007-02-09 22:34:17 · 10 answers · asked by CHAZ 2 in Arts & Humanities ➔ Visual Arts ➔ Sculpture
Chemicals are added to it to make it melt at a lower temperature than pure sand will melt and then it is cooked for several hours at about 2400F depending on the glass. See the source for more info.
2007-02-09 22:39:13 · answer #1 · answered by Mike1942f 7 · 0⤊ 0⤋
Sand is Silica, but your common beach type sand has a lot of iron in it that will turn the glass Coke bottle green, and to melt well it needs to be as fine as face powder.
So very special sand is used, that has the lowest Iron possible and then you also need chemicals from column one in the elements chart, like sodium (soda ash) or potassium(potash) and a chemical from column two like calcium or magnesium.
That will be 95% or more of the glass but tiny amounts of several other chemicals may be used.or some of the calcium may be replaced with lead or borax, there is usually a bit of arsenic or antimony to help clear away bubbles in the glass. Cobalt in as small amounts as 1:50,000 will make the glass blue
Broken glass from before will have all the chemicals in the right amounts and will be easier to melt so a lot of that is used as well.
2007-02-10 17:24:33 · answer #2 · answered by Freedem 3 · 0⤊ 0⤋
Sand by itself will not melt unless it is at extremely high temperatures. Thus a flux is added in the form of silica. The glass is then heated to 2400c it is then placed under pressure to form a bond between the two elements. Once this is done it is poured into molds to create shapes (cast glass) or in made into small ingots for later use.
2007-02-09 22:51:55 · answer #3 · answered by Shelty K 5 · 0⤊ 1⤋
It requires extreme temperatures to turn sand into glass. Google it or ask a professional before you even try to start such a project.
2016-05-24 22:17:24 · answer #4 · answered by Anonymous · 0⤊ 0⤋
As far as i know - heat and a lot of pressure - the same with coal tuning into diamonds
2007-02-09 22:43:09 · answer #5 · answered by pinkchampagne 3 · 0⤊ 0⤋
With extreme heat
2007-02-09 22:48:20 · answer #6 · answered by dragon fly 1 · 0⤊ 0⤋
I don't know all the particulares...but I do know that it takes lots of heat and pressure.
2007-02-09 22:46:32 · answer #7 · answered by dragonlady 4 · 0⤊ 0⤋
By heating it at high temperatures so that it will melt.
2007-02-09 22:40:44 · answer #8 · answered by Anonymous · 0⤊ 0⤋
heat and pressure. Watch this video on how they make it.
2007-02-09 22:37:33 · answer #9 · answered by Anonymous · 0⤊ 0⤋
It's lit on fire and melted down, then shaped,
:)
2007-02-09 22:36:52 · answer #10 · answered by Anonymous · 0⤊ 0⤋