?????? Tungstate ???? ????
???? tungstate ???? ????? ???? ????? ??????? ?????? ????? ????? ???????, ????? ???? ???? ???? ??????.
????? ?????? ???????
????? ??????? ?????? 320mesh, ?????? ???? ??????? 30% ????, ????? ??? ?????? ?? ???? ?????? ????? ??????? ????, ????? ??? ?????? ??????????? ????? ????? ????????, ??????? ???? ????? ?? ??? ????? ?? ????? ??????? ???. ???? ??????? ?????, dewatering ??????????, ??? ??? ???? ??????? ????, ?????? ????? ???:
MnWO4?FeWO4+4NaOH→2Na2WO4+Fe(OH)2?Mn(OH)2
Na2WO4+CaCl2→CaWO4+2NaCl
CaWO4+2HCl→CaCl2+H2WO4
H2WO4+2NaOH→Na2WO4?2H2O
???? ??????
????? ??????? ?????? ?? ???? hydroxide, ????? ???? ??????? ???? ??, ????? ??? ????? ?? ????? ????? ?????? ????????, ????? ??? ?? ??? ???? hydroxide ???? ????? Na2WO4?2H2O.
?? ????? ?????? ??????? ???? ???? ?????, ??? ?????? ?????? ?????? ??????, ?????? ????? ??????? ???? ????? ????? ????? ??????????? ?????, ?? ???? ?????? ?????? ????? ????????. ??? ????? ???? ????? ???????? ???? ??? ?????, ????? ???? ????? ???? hydroxide, ?????? ????? ????. ??? 6 ℃, ????? ?????? ???? decahydrate. ??? 6 ℃, ????? ?????? ???? ????????.
???? ??????
1.?????? ????? ???????? ???? 4 ???? ? 20% ????? ???? ????????, ????? ??? ????? ???? ??? 30 ~ 40 ℃ ?????? ?? ????? ?? ????:
H2WO4+2NaOH→Na2WO4+2H2O
2.???? ?? ?????? ??? ???, ????, ????? ????? ?????? ????? ???????, ????? ?? ?? ???, dewatering ??????????, ??? ????? ???? ??????? ????. ??? ???, ????? ???? ??? ???? ????? ??????? ???? ?? ???? ????.
???? ????? ??? ????? ????
????? ??????? scheelite ? pulping, ????? ??? ?????? ???? ???? ?? ???? ? 1.5 ????? ???? ???????? ????? ?? ????, ? ????? ??? ??? ????? ? 200 ~ 225 ℃, ?????? ???? 4 ????. ??? ??? ?????, ??? ????? ???? ???? ???? ????? ???? ??????, ?????, ????? ???????, ??? ????? ??????? ????. ?????? ?????:
CaWO4+Na2CO3→Na2WO4+CaCO3
?? ?? ?? ????? ??????? ????, ?? ???? ????? ????? ????"?: sales@chinatungsten.com?? ??????:+86 592 5129696.
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