?????? ??? ????? ???? ??? ??????? ??? ?? ??????????? ???? ?? process???? ?????????, ? ???? ????? (??????????? ????????????? ??????) ???? ???????????? ??? ???? ?????? ?? ??? used??????? ??????????? ????????????? ?????????? ???? ???? ??????? ??? ?? ???? ????? ???? ???? ?????.

1. ???????? ????????

(???????? ???????? ? ??????????? ????????? ????? ????????? ??)

(1) ????:

??????? ???? ?????? ??????? ???? ??????? ??????, ????? ???? ?????? ??????? ????? ????? ???, ??? ????? ???? ??? ???? ??????? ???? ??? ???.

(2) ???

??? ???? ???? ??????? ?????? ????????? ?????? ??? ???????? ???? ??? ??, ??? ?????? ???????? ??? ????? ????????? ??? ????? ??? ?????? ????????? ?????? ??????? ???? ??? ??????? ??? ??.

()) ????????:

??????? ????????????? ???? ??????? ??? ?? ??? ?????? ???????? ???? ???? ???? ?????? ???????? ?????? ?????? ????? ????????????? ?????? ???????? ????? ??????? ??? ??.

2. ???? ?? :???:

???? ??????? ? ???????? ??????? ?????? ??. ?????, ???????? ??????? ??????? ???? ??????, ?? ??????? ??????? ???, ????????????? ????? ??? ???? ?????? ????? ??? ??????????????? ??? ??????.

??????? ???? ???????? ??????? ???? 63?63 ?????? ??-????? ????????? ????????? ??? ??? ???????????? ????? ???? ???? ?? ??????? ???????? ??????????? ???? ?? .????? ??? ??. ????? ??????? ???-???????? ?????? ??? ?????????? ?????? ??? ??.

3. ???

(???? ???? ????????? ox???????? ???? ??? ??????), ????????? ??????????? ???? ????????, ???? ??????? ??? ???????? ????? ???, ????????????? ??? ?????????? ??????, ???????? ?????? ??? ????? ???????? ????? ?????? ???? ??????? ?????? ???? ????????? ???? ?????? ??.

????? ????????? ???? ???? ??:

(1) ????? ?????????:

????? ??????????? ???? ?? to?? ???? ??????? ???? ??????? ????????? ????? ?????????? ??????? ??? ???? ???? ??????? ??? ??, ???? ??????? ??? ??ense ??????? ??????? ????? ??? ???.???? ???? ??? ?????? ?? ???????? ???? ????? ???? ??.

(2) ?????? ?????????:

????? ??????????????? ???, ???? ?????? ?????????????, ?????? surface???????? ??????????? ????? ?? ??? ??, ??????? ??ense, ???????? ??? ????? ???? AL2O3 ??????? ??????? ?????? ??.

()) ??? ??????:

Od?????? ??????? ?????-???????, ?????-??? ??? ????????? ???????? ?????? ???? ??????? ??????? ??????? ??????? ???????? ??? ??????? ????? ???. ????????? ????? ?????? ??? ???????? ??, ??? ???? ????? ????????? ??????? ????? ?????? ?????, ?????? ?????? ?????? ?????? ????? ???? ?????????, ??? ???? ????? ???????? ????? ?????? (??????? ????) ????? ???? ??, ??? ??: ????, ??????, ????? ??? ???????? ????? ???.