Cov khoom siv pub khoom noj yog cov txheej txheem nyuaj thiab muag heev, thawj zaug muab tso rau hauv cov khoom siv raw, suav nrog txhua hom nplej, pub additives, minerals thiab vitamins. Tom ntej no yog qhov sib tov thiab crushing. Nyob rau theem no, cov khoom siv raw yog sib xyaw ua ke hauv qee qhov kev faib ua feem thiab pulverized rau hauv cov khoom zoo los ntawm pulverizer.
Cov txheej txheem no ua kom ntseeg tau tias cov khoom noj tau zoo dua sib xyaw thiab zom rau hauv cov txheej txheem tom ntej; tom qab ntawd los ntawm kev sib tham pelleting. Nyob rau theem no, cov crushed pub yog pub rau hauv lub tshuab pelletizing qhov twg nws yog compressed thiab ua tiav ntawm qhov kub thiab txias los ua pellets.
