2013-57.Inoculation process and device of gray or nodular cast iron Patent No.:MX2012006010Date of Patent:2013-05-30 Inventor(s):Jimenez Luis Cobos,et al Assignee:Fundacion Tecnalia res & Innovation[ES] The presen...2013-57.Inoculation process and device of gray or nodular cast iron Patent No.:MX2012006010Date of Patent:2013-05-30 Inventor(s):Jimenez Luis Cobos,et al Assignee:Fundacion Tecnalia res & Innovation[ES] The present invention describes a new inoculation process for inoculating a(gray or nodular) cast iron and especially a molten iron bath contained in a pouring device(trough,furnace or ladle) arranged between the outlet of a melting furnace and the line of molds by means of a transferred arc plasma torch having an anode展开更多
A set of laser apparatus was used to study induction period and primary nucleation of lithium carbonate in reactive crystallization.The results show that induction period increases with the decrease of supersaturation...A set of laser apparatus was used to study induction period and primary nucleation of lithium carbonate in reactive crystallization.The results show that induction period increases with the decrease of supersaturation degree and temperature.Magnetic field has nearly no impact on it,while the use of ultrasound reduces it obviously.The impacts of some impurities and additives on primary nucleation were investigated.It is found that the presence of Na2SO4,NH4Cl,(NH4)2SO4 and EDTA disodium prolongs induction period,whereas KCl,NaCl,NaBr and CH4N2O can decrease it.Many important parameters of primary nucleation are also obtained,as temperature goes up from 283 to 313 K,interfacial tension decreases from 44.8 to 41.5 mJ/m2,contact angle varies from 82.9o to 88.7o,nucleation order is between 5.0 and 5.4,surface entropy factors are all above 5,suggesting that the growth mechanism is a spiral growth.Besides,both the homogeneous and heterogeneous primary nucleations were monitored with on-line focused beam reflectance measurement.展开更多
文摘2013-57.Inoculation process and device of gray or nodular cast iron Patent No.:MX2012006010Date of Patent:2013-05-30 Inventor(s):Jimenez Luis Cobos,et al Assignee:Fundacion Tecnalia res & Innovation[ES] The present invention describes a new inoculation process for inoculating a(gray or nodular) cast iron and especially a molten iron bath contained in a pouring device(trough,furnace or ladle) arranged between the outlet of a melting furnace and the line of molds by means of a transferred arc plasma torch having an anode
基金Supported by Shanghai Leading Academic Discipline Project (No.B506)Program for New Century Excellent Talents in University (No. NCET-08-0776)
文摘A set of laser apparatus was used to study induction period and primary nucleation of lithium carbonate in reactive crystallization.The results show that induction period increases with the decrease of supersaturation degree and temperature.Magnetic field has nearly no impact on it,while the use of ultrasound reduces it obviously.The impacts of some impurities and additives on primary nucleation were investigated.It is found that the presence of Na2SO4,NH4Cl,(NH4)2SO4 and EDTA disodium prolongs induction period,whereas KCl,NaCl,NaBr and CH4N2O can decrease it.Many important parameters of primary nucleation are also obtained,as temperature goes up from 283 to 313 K,interfacial tension decreases from 44.8 to 41.5 mJ/m2,contact angle varies from 82.9o to 88.7o,nucleation order is between 5.0 and 5.4,surface entropy factors are all above 5,suggesting that the growth mechanism is a spiral growth.Besides,both the homogeneous and heterogeneous primary nucleations were monitored with on-line focused beam reflectance measurement.
