氟硅酸制氟化钠和白炭黑

:2004-03-29:(1967-),,,,:,:[phone],E2mail:[e-mail]:1004-9533(2005)02-0154-031,2(11,330006;21,330029):,,,:;;;;:X786:APreparationofSodiumFluorideandSilicaAerogelfromFluorosilicisAcidLIUXiao2ping1,LIUXiao2hong2(1.JiangxiMedicalUniversity,JiangxiNanchang330006,China;2.EnvironmentalScienceandEngineeringCollege,NanchangUniversity,JiangxiNanchang330029,China)Abstract:Anewtechnologyisintroducedforpreparationsodiumfluorideandsilicaaerogelfromfluorosilicisacid,theby2productofphosphaticfertilizerproduction.Thetechnologyissimpleandhaslowenergyconsump2tion,mildreactionconditionsandwelleconomiceffects.Itisanewwaydiscoveredforrecoveringandutilizingtheresourcesoffluorosilicisacidandreducingitsenvironmentalpollution.Keywords:fluorosilicisacid;sodiumfluoride;silicaaerogel;newtechnology;resourcesutilization,415%610%,,(H2SiF610%12%),,,,,,,,,,,[1],,:,;;;,,,:,,,,,,H2SiF6,10%30%,,,,20053Mar.2005CHEMICALINDUSTRYANDENGINEERING222Vol.22No.2,,1111:;:;:;:1121):2311%(,)();95193%();9618%();9810%()2):NH+4,;Cl-,113:H2SiF6(1)+NH4HCO3(1)6NH4F(1)+SiO2(s)+6CO2(g)(1)NH4F(1)+NaCl(s)NaF(s)+NH4Cl(1)(2)(1)22,CO2SiO2,;(2),NaF1NH4HCO3NH4FNaFNH4Cl[2]1NH4HCO3,NH4F,NaF,NH4ClP(%)NH4HCO3NH4FNaFNH4Cl011.941.813.5322.702017.5645.253.9027.104025.9348.894.2131.406052.624.4735.608054.054.6639.601,NH4HCO3,40,NH4HCO3,40NaF4%,NaF,4%NaFNH4Cl,NH4Cl,NaF4%11411H2SiF6NaF1151):(1)7080;(2)7080;6070;45;1102):(1)(2);90658196Pa;:3):n(NH4HCO3)Pn(H2SiF6)=6.2614;n(NaCl)Pn(NH4F)=1104):(1)115h210h;(2)210h28%30%;26%2211,GB4293284;,GB10517289;,GB2946282212,(1t,):()0161t0164t;(95193%)2104t2115t;()1145t1149t;(98%)01065t01080t;0123t0125t;1127t1132t;()90%551222:213213111):NH4HCO3H2SiF6H2SiF6,(2),H2SiF6NaCl,Na2SiF6,NaF,NaFNH4HCO3,NH4HCO3H2SO4,(NH4)2SO4,n(NH4HCO3)/n(H2SiF6)=612614H2SiF62):NaF(2),NaFNH4Cl(2),(),,,;,NaCl,NaF98%3)NaF:NaFNH4Cl,NaFNH4Cl,NH4Cl,NaF,NH4Cl,NaF,NaFNH4Cl,NaF,:1),NaF,NH4Cl;2),NH4Cl;3),NH4Cl,NaF21312(1),,NH4F,(3),(NH4)2SiF6NH4F(NH4)2SiF,SiO2,SiO2,FN,2413%H2SiF6NH4HCO3,SiO2SiO290%(),H2SiF620%(),213131):SiO2NaF,,NH4Cl,2):NH4FNaCl,,,n(NaCl)Pn(NH4F)=110NH4Cl(),,31),,2),;3),:[1].[J].,2001,19(5):37-39.[2].[M].:,1979.65120053