氟硅酸的综合利用

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:1999-08-20210048,TQ12413A1006-7906(1999)04-0030-041,,,3%4%,[1],,,,,,,,,,,,,,,,,10,,,,2[2]211:H2SiF6,144109,,1132,108150,,,,,60192%,1313%,,,,::H2SiF62910%:8%H2SiF610%18%H2SiF620%212,,,,,,031999204©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[3],,,011%012%,,3[4]60kt,40%;30%;30%9kt/a;(18%25%),15kt/a,1975,,,40%198420kt/a,,,,199014390kt,199518000kt,70803545kg,2529kg1995,,,5kg,20000kt,100kt,,,40%:4kt/a,2kt/a,2kt/a,114kt/a60,70,,,10,,,,;,,,,;80kt/a,1995,150kt,2000,500600kt,200kt4[5]411,,,:(),,:13©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(NH4)2CO3+2HF2NH4F+CO2+H2ONH4HCO3+HFNH4F+CO2+N2ONH3+HFNH4FNa2CO3+2NH4F(NH4)2CO3+2NaFSiF4+2NaFNa2SiF6,,,:Ca3(PO4)2+2H2SiF6+4H2OCa(H2PO4)2+2CaSiF62H2OCaSiF62H2O+H2OSiO2H2O+CaF2+4HF4HF+Ca3(PO4)2Ca(H2PO4)2+2CaF2;,20%28%,171920kg,9819%()P2O52315%(),,,58182%,45146%,,412,(),,(CBr2F2CF2ClBr),,41211,Bayer/Kalichemie,:3CaCO3+H2SiF63CaF2+SiO2+3CO2+H2O(),90%,215%315%,,,:,pH=9,,:6NH3+H2SiF6+2H2O6NH4F+SiO2,,3Ca(OH)2+6NH4F+3H2O3CaF2+6NH3+9H2O,9717%,0171%9713%,8818%41212,ISC,,:,,,:NH4F+KFKHF2+NH3,:KHF2+NaFKF+NaHF2,,300:NaHF2NaF+HF1t9919%:20%6115t,9919%33kg,5kg;513kg41213:150,231999204©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:H2SiF6H2SO4SiF4+2HF:98%125,;,,,69%78%9520597%99%,,98%,,50007000t/a,20%25%,,5,,,,,,,,,[1],11,1996[2]11,1994[3]1,1993(4):1012[4]1,1992(4):16[5]1,1991(5):2832SabicCO2Sabic(R&D)Al-JubailSharq()CO2Sharq,,,CO2,,CO2,CO2,,CO2,,19986(US5770761),,,,,BP,,33