How much percentage of sodium silicate (Na2SiO3) is added to the sand mixture in CO₂ moulding? A)0 to 2 % B)2 to 6 % C)6 to 10 % D)10 to 14 %

Question

Quizplus · Accepted Answer

Sodium silicate (Na2SiO3) is typically added in the range of 2 to 6 percent to the sand mixture in CO2 moulding processes, which helps in binding the sand particles together when carbon dioxide is passed through it, leading to the hardening of the mould.

How Much Percentage of Sodium Silicate (Na2SiO3) Is Added to the Sand