Rau qhov kev tsim cement, raw mills muaj qhov cuam tshuam tshaj plaws rau kev tsim cov khoom uas yuav tsum muaj rau kev tsim cement. Cov mill no yog li cov khoom tshwj xeeb uas kho raw materials mus rau hauv qhov powder ntau. Cov khoom tshwj xeeb uas siv yog limestone, clay, thiab lub tsev kawg yog sand lossis iron ore. Tom qab kho lawv, cov khoom no yuav tsum muaj rau hauv qhov "raw mill." Qhov raw mill no yuav tsum muaj rau hauv qhov kiln los tsim cement. Cov chaw tsim li Insun machinery phab ntsuas tshuaj tsis tau txhawj xeeb rau kev muab cov qhov chaw ua kom zoo rau kev ua cement kom zoo thiab nyuaj. Los ntawm kev paub seb raw mills ua li cas, peb tuaj yeem paub tias nws yog qhov tseem ceeb rau kev kawm kho lub tsev, lub rooj, thiab lwm yam khoom uas peb ua.
Raw mills muaj qhov ua haujlwm tseem ceeb rau hauv qhov kev ua cement. The Insun cement factory equipment txhawb cov khoom tshuag loj los ntawm qhov chaw ua khoom thiab txhawb rau los ua cov khoom tshuag ntsuab. Cov khoom tshuag ntsuab no yog qhov tseem ceeb rau qhov yuav tsum ua kom zoo ib yam rau qhov cement kom muaj txiaj ntsig. Yog tias cov khoom tshuag tsis ua kom zoo, qhov cement yuav tsis tuaj yeem nyob zoo rau hauv cov toj thiab cov rooj. Cov khoom tshuag raw mills ua haujlwm los ntawm kev siv cov roj loj rau qhov ua khoom tshuag. Qhov ua haujlwm no sib thooj rau qhov kuv ua cov khoom tshuag tshiab rau hauv cov roj thiab cov roj. Cov khoom tshuag uas tau ua los ntawm qhov ua haujlwm no ces yuav tau ua rau cov khoom tshuag ntsuab zoo ib yam. Qhov raw mill no yog qhov tseem ceeb rau qhov yuav tau ua rau qhov cement los ntawm qhov ua haujlwm ntau dua ntawm qhov kiln. Ntawd li, qhov quality ntawm cov khoom tshuag raw mill yuav pab tshaj qhov khoom thaum kawg. Yog tias cov khoom tshuag raw mill tsis ua kom zoo thiab tsis ua kom zoo ib yam, qhov cement yuav muaj cov qhov tsis zoo. Vim li no, cov thawj tswv li Insun khoob tshuab ntawm lub tsev kho ciment tsis txhob saib xyuam rau kev suav nrog kev ua haujlwm ntawm lawv cov roj raw. Lawv xav kom paub tias cov khoom siv yeej tau ua haujlwm raws li qhov tsim nyog thiab qhov zoo. Ntawd, cov roj raw tshiab muaj kev ua haujlwm zoo tshaj plaws uas pab saib xyuam kev ua haujlwm ntawm kev sov. Kev ua haujlwm no ntawm kev ua cement tuaj yeem pab los npaj kev ua haujlwm rau kev ua haujlwm zoo dua, uas yog qhov tseem ceeb rau kev ua cement zoo. Txhua yam, cov roj raw yog qhov kawg ntawm kev ua haujlwm ntau yam uas pab ua cement zoo thiab muaj peev xwm, uas yog qhov tseem ceeb rau kev ua haujlwm ntawm kev xaiv lub nroog.