It was found that when the value of bubble diameter d. a characteristic parameter of the model , was calculated through the equationdb=[Lmf(U0-Umf)/0.711(Lf-Lmf)]2/g,the experimental data could fit the B-E ( M ) model ( Davidson model ) well, with an average error of 5.24%.
Crystals are SiO2,Al2SiO5 and Na2Ca2(SiO3)3 with average bubble diameter 2.039mm,density 0.65 g/cm3,thermal expansion coefficient 115.6×10-7/℃,compression strength 7.31MPa and bending strength 5.83Mpa under temperature of 725℃ and holding time 25min.
Crystals are SiO_2, Al_2SiO_5 and Na_2Ca_2(SiO_3)_3 with average bubble diameter 2.039mm,density 0.65g/cm~3, thermal expansion coefficient 115.6×10~-7/℃,compression strength 7.31MPa and bending strength 5.83MPa under temperature of 725℃ and holding time 25min.
Crystals are SiO2 Al2SiO5 and Na2Ca2(SiO3)3 with average bubble diameter 2.039mm density 0.65g/cm3 thermal expansion coefficient 115.6×10-7/℃ compression strength 7.31 MPa and bending strength 5.83 MPa under temperature of 725 ℃ and holding time 25 min.
The result shows that the higher foaming temperature the larger bubble diameter and the smaller density of the product. The optimum foaming temperature is 725℃ and longer holding time the larger bubble diameter.
when the mass ratio of AC/NaHCO3/L/stabilizing agent is 4/0.8/0.6/6.2, the density , bubble diameter and the elongation at break of foaming material decrease, but the strength and elastic resilience increase;
Characteristics for two types of bubble generators like the in-line mixer and sparger are examined by bubble properties such as bubble diameter, holdup and bubble velocity.
The mass transfer rate is determined by monitoring the rate of reduction in the equivalent bubble diameter during the initial absorption process.
The scale of interest lies between the plant scale (of the order of the tank) and the microscale (less than the bubble diameter).
The foam index was found to be inversely proportional to the average bubble diameter.
When the foam was generated by the slag/metal interfacial reaction at 1450 °C, it was found that the average bubble diameter varied from less than 1 to more than 5 mm as a function of the sulfur activity in the carbon-saturated liquid iron.