A glass is to be manufactured with the following composition by weight: % by weight Component Silica: SiO2 72 Soda: NażO 14 Lime: Cao 11 Magnesia: MgO 3 Calculate the batch recipe in terms of the required weights of starting materials. The following information is given: Na,CO, → Na20 + CO2 ↑ (flue) CaCo, → Ca0 + CO2 ↑ (flue) MgCO, → MgO + CO2 ↑ (flue) (Relative Atomic Masses are: C = 12, O = 16, Na = 23, Mg = 24, Si = 28, Ca = 40) %3D

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Question 9
A glass is to be manufactured with the following composition by weight:
Component
% by weight
Silica: SiO2
72
Soda: NażO
14
Lime: Cao
11
Magnesia: MgO
3
Calculate the batch recipe in terms of the required weights of starting materials. The
following information is given:
Na,CO3 → Naz0 + CO2 ↑ (flue)
CaCO3 → Ca0 + CO2 ↑ (flue)
MgCO3 → MgO + CO2 ↑ (flue)
(Relative Atomic Masses are: C = 12, O = 16, Na = 23, Mg = 24, Si = 28, Ca = 40)
%3D
Question 10
A 2m?glass panel needs to be toughened to increase its strength and impact resistance. What
processing would you recommend? Describe the suggested process and explain how
toughening is achieved.
Transcribed Image Text:Question 9 A glass is to be manufactured with the following composition by weight: Component % by weight Silica: SiO2 72 Soda: NażO 14 Lime: Cao 11 Magnesia: MgO 3 Calculate the batch recipe in terms of the required weights of starting materials. The following information is given: Na,CO3 → Naz0 + CO2 ↑ (flue) CaCO3 → Ca0 + CO2 ↑ (flue) MgCO3 → MgO + CO2 ↑ (flue) (Relative Atomic Masses are: C = 12, O = 16, Na = 23, Mg = 24, Si = 28, Ca = 40) %3D Question 10 A 2m?glass panel needs to be toughened to increase its strength and impact resistance. What processing would you recommend? Describe the suggested process and explain how toughening is achieved.
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