摘要
It is customary to evaluate the sand reclamation efficiency by general standardmethod as sieve analysis etc.But the special method also can be used in the casewhere the weight of specimen sand is small and a more accurate result is expected.Inauthors’experiments,the grain-size analysis was carried out by an image analysingcomputer and the Na<sub>2</sub>O content analysis was done with a modified standard methodof acid consumption.From the results of analyses,it might be recognized that theCO<sub>2</sub>-sodium silicate bonded sand can be reclaimed by dry type vibration methodeffectively after pretreatment.The size and form of reclaimed sand grain are the sameas those of original new Sand and soda content in the remainder on the surface ofsand grain is about 0.I%.It is assumed that the sieve method may be replaced by theimage analysing computer in sand grain-size analysis in the future.It is also pro-posed that the titration method for measuring Na<sub>2</sub>O content may be necessary tobe studied further.
It is customary to evaluate the sand reclamation efficiency by general standard method as sieve analysis etc.But the special method also can be used in the case where the weight of specimen sand is small and a more accurate result is expected.In authors'experiments,the grain-size analysis was carried out by an image analysing computer and the Na_2O content analysis was done with a modified standard method of acid consumption.From the results of analyses,it might be recognized that the CO_2-sodium silicate bonded sand can be reclaimed by dry type vibration method effectively after pretreatment.The size and form of reclaimed sand grain are the same as those of original new Sand and soda content in the remainder on the surface of sand grain is about 0.I%.It is assumed that the sieve method may be replaced by the image analysing computer in sand grain-size analysis in the future.It is also pro- posed that the titration method for measuring Na_2O content may be necessary to be studied further.
出处
《昆明理工大学学报（自然科学版）》
CAS
1990年第3期8-17,共10页
Journal of Kunming University of Science and Technology(Natural Science)
