Nrog txoj kev loj hlob ntawm lub sij hawm, pob zeb hmoov yog siv ntau thiab ntau dua. Pob zeb hmoov yog ib lub sij hawm dav rau pob zeb hmoov nrog dav daim ntawv thov, thiab nws cov khoom yog qhov txhia chaw hauv peb lub neej.
Yuav kom tsim cov hmoov zeb hmoov, cov aggregates yuav tsum tau raug nplawm coarsely, nplua crushed thiab grinded. Lub puab tsaig crusher, khob khawm crusher thiab feem crushed yog siv los ua hmoov. Cov ntaub ntawv zoo li basalt thiab granite yuav tsum tau crushed feem ntau ntawm lub puab tsaig crusher, thiab ces lub khob hliav qab crusher yog siv rau cov crushing lwm yam kom tau raws lub fineness ntawm lub pob zeb hmoov siv cib ua. Thaum cov ntaub ntawv nkig xws li limestone thiab cov hluav taws kub cov hnab yas tsuas xav tau ib theem xwb.
