??????：? ??? ??????? ????? ???????? ????? ??? ??, ?????????, ???????, ?????? ??????? ???? ??????? ?????? ?? ?????? ???? ??.

?????, ???? ????? ???? ???????? ????? ????? ???????? ??? ??, ?? ?????? ???? ???? ??? ???????? ????????????? ?? ??, ?? ????? ?????????? ??? ??? ?? ????? ????????, ????? ??? ?????. ???? ????? ????????, ????? ????Hardness, ???????? ???????, ??? ?????? ???????????, ???? ???? ?????????? ?????? ????? ????? ??. ? ??? ??????? ????? ???????? ????? ??? ??, ??????????, ???????, ?????? ??????? ???? ??????? ?????? ??????? ??.

uses of silica sand

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

????? ????? ????????? ?? ?????? ??? ??, ????????? ???? ???????? ??? ???? ??? ??????????? ?????? ?????. ????? ????? ???? ???????, ???? ??? ????????? ?? ??????? ??? ??. ????? ?????? ????????? ???? ????? ??? ???????? ???? ????? ???? ?? ???????, ?????, ???? ??? ???? ????? ?????? ?????????? ???? ????? ????? ??. ???????, ????? ????, ?????? ??? ????? ??????? ???? ???????? ????? ??,Buildings?? ????????? ??? ??????? ????????? ?????? ??? ??.

2. ??? ? Herstell?

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

3. ?????????????? ??? ???????????? ??????

?????? ???? ?????????????? ??? ???????????? ????????? ?? ?????????? ?????? ???? ??. ? ???????????? ???????? (IC) ??? ??????????????? ????????????? ???? ????? ???????? ????? ??. ??????? ?????? ????? ?????? ?????? ???? ?????????? ??????????? ?????? ??? ??, ?? ??????????? ?????? ?? ??? ???????????? ???????? ????? ??????????? ????????? ??? ??. ??????, ?????? ??????? ?????? ???? ??????? ?????????? ?? ?????? ??, ????? ?? ????? ???? ????? ????? ??? ??, ??????? ??????????? ??? ??????? ?????? ????.

4. ????????? ??? ??????????? ???????

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

5. ???????? ??????

???????? ?????????, ?????? ???? ???????? ?????? ??? ??????? ??????? ????? ???????? ????? ??. ???? ????????? ?????????? ?????? ???? ????? ??? ??, ?? ?????? ???????????????? ???? ?? ?? ????? ???????? ?????????，包括 ??????, ???? ????????? ??? ??? ?????? ??. ?????? ?????? ??????????? ???????? ???? ?? ????? ??? ????????? ?????????? ?? ????? ??? ??, ????? ????????, ????????? ??? ????????? ????? ??? ??.

6. ????

?????? ?????? Agricultura??? ?? ????? ??? ??. ?? ????? ??? ???? ?????????? ??? ??????? ????? ???? ??????? ???? ????? ???? ????? ??? ??? ??. ?????? ?????? ?????? ???????, ?????? ?????? ?????? ??? ??????? ??????? ??????????? ???? ???? ?????? ??. ??????, ?? ????? ????? ??? ????? ??????? ?????????? ????? ??? ??, ????? ?? ?????? ???? ???? ??????? ????? ????? ??? ??.

7. ?????? ??? ???

?????? ??? ?????????, ?????? ???? ????? ??? ??????????????? ?? ??????????? ????? ???????? ????? ??. ?? ???????? ????? ????? ??? ??, ?????? ??? ????????????? ???? ????????? ?????? ??, ?? ?????? ?????? ??? ????????? ??????? ???? ??? ? ?????????? ??. ??????, ?????? ?????????-????? ???? ??????? ???????? ?????????? ?? ????? ???? ???, ????? ?? ?????? ?????? ???? ???????? ?????? ??????? ??? ??? ??. ??????, ?? ????????????, ????? ???????? ??? ??? ?????, ???? ??? ??? ??? ????????? ???? ???? ????? ???? ??.

8. ??? ??????

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

9. ??????????? ??? ????????? ?????

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

10. ?????????? ????

?????? ??????? ???? ????orption ??? ?????????? ??????????? ???? ?????????? ?????????????? ????? ??????? ??? ??. ?????? ????? ????????????? ???? ????? ??? ???????? ?????? ???? ?????? ??? ???? ???? ???? ????? ??? ??. ?????? ?????? ??????? ?? ??? ????????? ??????????? ?????? ??? ????? ?????? ?????? ???? ???? ????? ??.

???????? ??????

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

???? ???????? ??? ?????????????

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

???? ???? ?????????? ??? ????? ??? ???????-?????????? ????? ???? ?????? ?????? ?????????? ????? ????? ??, ?? ????? ?? ????????? ?????? ??? ???????? ????? ????? ??????? ???? ??? ??. ??????, ?????? ?????? ????? ??? ????????????? ?????????? ????? ??? ????? ??, ?????? ????????? ?????? ?????? ????.

? ????-????? ???????? ??? ????, ?????? ????? ?????? ????? ?????????? ??????????? ?? ??? ??? ????? ??, ? ???????? ?????????? ????????????? ??? ????????? ?? ????? ????????? ?????. ?????? ???? ??? ????????? ??????? ??????, ?????? ??? ???????? ??? ??????? ????, ????, ??? ?????? ??????????? ?????? ??????? ??????? ??? ????? ???? ???? ????? ?? ??? ??.

? ??? ???? ???? ????? ???????? ? ???? ??? ????? ???????? ?????? ????? ??, ?? ??????????????? ???????? ??????? ???????? ???? ??? ??, ??? ????????-?????? ?????? ??? ?????? ????? ??.

?????? ????

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

? ?????????? ?? ???? ??????? ????? ?? 3D ?????????? ????????????? ?????? ?????? ?????. ? ??????? ???? ???? ??? ??? ?????? ???, ??????? ??? ?????????? ?????? ???? ???? ?????? ?????????? ???? ????? ??, ?? ???? ???? ???? ????? ????????????????? ?????? ??? ?????? ??? ?? ??????? ??????? ???? ??? ??.

?????????? ?????????? ??????? ??????? ??????: ??????? ?????? ??????, ?????? ??????? ?????? ???? ??????????? ?? ??? ????? ??, ??? ?? ?????? ????? ??? ????? ???????. ??? ??? ????? ?????? ??? ??? ?????? ????? ???????? ?????????? ????? ??? ??, ?????? ?????? ??????? ???????? - ?????? ????? ?????? ???? ?????? ??? ???????? ???????????? ???? ?????? - ???? ???? ??? ???????? ?????? ????? ??.

?????? ???? ?? ???????????? ????? ?? ?? varias ?????????? ????????? ???? ??? ??. ???? ????? ???????????, ???? ????, ??????? ??????? ??? ???????????????????, ???? ???????, ??????????????, ?????? ??? ?????? ?? ???????? ??????? ????? ??. ????????? ?? ????? ????, ?????? ?????? ??? ???? ?? ??????? ??, ?? ???? ????????? ??? ?????? ??? ??????? ??????? ??? ??. ?????? ?????? ????? ?????? ????? ? ? ?????? ??????? ???? ????????? ??? ?????? ???????? ???? ????????? ??????? ??? ??.