Manufacturing process of glass, Chemistry

Q. Describe the manufacturing process of glass.

Ans. Manufacturing process of glass

1.      Melting: Raw materials, in proper properties mixed with pellets, are finally powdered and intimate mixture is fused in either finely pot or tanks part of an open hearth furnace, in which heating is done by burning producer gas and air mixture over the change. At high prevailing temperature the charge melts fuses. The melting process in case of ordinary soda glass involves following reactions.

CaCO3 + SiO3 = CaSiO3 + CO2

Na2CO3 + SIO2 = Na2SiO3 + CO2

When all the CO2 has escaped out of the molten mass, decolourizer are added and if coloured glass is desired then colouring agent is added, heating is continue till the molten mass is free from bubbles and glass balls, and then cooled to about 8000C.

2.      Forming and shaping: Molten glass is then worked into articles of desired shapes by both blowing and moulding.

3.      Annealing: The glass articles are allowed to cool gradually at room temperature by passing through different chambers with decreasing temperature, this is known as annealing.

4.      Finishing: Cleaning, grinding, polishing, cutting, sand plastic etc. Are completed in this process.

Posted Date: 7/21/2012 7:28:14 AM | Location : United States







Related Discussions:- Manufacturing process of glass, Assignment Help, Ask Question on Manufacturing process of glass, Get Answer, Expert's Help, Manufacturing process of glass Discussions

Write discussion on Manufacturing process of glass
Your posts are moderated
Related Questions
Orthoboric acid H 3 BO 3 commonly known as boricacid and Meta boric acid HB0 3 , are two well-known and important oxoacids of boron. On a large scale, H 3 BO 3 is prepared by the

Q. Test for hydrocyanic acid? Hydrocyanic acid is present as an impurity in synthetic ethyl isothiocyanate, which is employed to make the flavour of mustard oil more pungent. T

What are the compositions of the equilibrated top Layers? Figure is a temperature-composition phase diagram for the binary system of water (A) and phenol (B) at 1 bar. These li

#question:- What are the theories of catalysis?

Carbon an essential constituent of all organic compounds The word organic means to organs of both plants and animals and organic chemistry is the study of  the products which or

Another way to show that water pressure increases with depth Search a tall tin can. Punch holes up the side of the can about 3 cm apart. Put a strip of adhesive or plastic tape

how did atoms appear

Q. What do you mean by Dative Covalent Bonds?Dative Covalent Bonds Ans. Sometimes both electrons in the shared pair come from one atom. This type of bond is called a dativ

WHAT DOES DSA STAND FOR

Chloride of metal is MCl 2  . The formula of its phosphate will be: (1) M 2 PO 4                                                (2)  M 3 (Po 4 ) 2 (3)  M 2 (