Txhua tus neeg paub zoo nrog tons hnab. Ore tons ntawm lub hnab yog txhua lub hnab ntim uas muaj ores. Hom hnab no feem ntau siv rau hauv cov chaw tsim kho thiab lwm qhov chaw. Lawv muaj cov haujlwm ntawm noo-pov thawj thiab hmoov av-pov thawj, uas tej zaum yuav tsis pom los ntawm cov neeg zoo tib yam. Tab sis koj puas paub qhov teeb meem twg yuav tsum tau them sai sai rau thaum kev ua cov hnab ntim khoom me? Peb tau ua qee cov ntsiab lus hais txog qhov no.
Kev ua cov ore tonnage hnab xav tau kev teeb tsa cov khoom lag luam thiab sib xyaw cov khoom siv ua ntej ua, uas yog qhov txuas txuas hauv kev tsim khoom. Thaum muab sib xyaw, cov khoom siv nrog melting index zoo sib xws yuav tsum tau xaiv thawj qhov kev xaiv. Yog tias qhov sib txawv ntawm melting Performance index loj dhau lawm thiab kev qhia qib yas tsis txawv txav, cov duab kos yuav cuam tshuam. Qhov zoo ntawm lub tiaj tus hlau yuav txo, lub xov hlau tawg yuav tsim, thiab qhov tsis lees yuav nce ntau heev. Tiag, kev lag luam ib txwm yuav raug cuam tshuam tib lub sijhawm. Lub sijhawm ziab thiab kub ntawm qhov sib tov tseem cuam tshuam cov homogeneity ntawm kev sib tov.
Yog li ntawd, nws tau hais tias cov tuam txhab yuav tsum them sai sai rau cov teeb meem no thaum kev ua cov khoom siv tons ntawm hnab rau cov neeg siv khoom.