The sodium silicate sand prepared with higher modulus sodium silicate has advantages of low residual strength, short CO2 blowing time, high moisture absorption ability and surface stability.
使用较高模数的水玻璃混制的型砂具有残留强度低、吹CO2时间短等优点，并有好的抗吸湿性和表面稳定性。
A new way of preparing big modulus sodium silicate and active charcoal from rice dusk ash was described.
本文提出了由稻壳灰制高模数的水玻璃和活性炭的新工艺。
The results on sodium silicate show that the modulus value is limited if the concentration is risen first;
结果表明，提升浓度可限制模数值和提升模数可限制浓度。
The results on sodium silicate show that the modulus value is limited if the concentration is risen first;
结果表明，提升浓度可限制模数值和提升模数可限制浓度。
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