Yuav ua kom Portland cement, av nplaum, shale thiab limestone yog av rau hmoov thiab ci rau hauv qhov cub. Cov sib tov sib xyaw ua cov clods (clinkers), uas yog tom qab ntawd hauv av thiab tov nrog gypsum. Feem ntau ntawm cov ntaub ntawv raw yog mined nyob rau hauv qhib pits. Michigan ib txwm nyob hauv tsib lub xeev hais txog kev tsim cov cement.
portland cement ua li cas?
Muaj plaub theem hauv kev tsim cov portland cement: (1) crushing thiab sib tsoo cov ntaub ntawv raw, (2) blending cov ntaub ntawv nyob rau hauv qhov proportions, (3) hlawv cov khoom sib xyaw ua ke hauv qhov cub, thiab (4) sib tsoo cov khoom kub hnyiab, hu ua "clinker," ua ke nrog qee qhov 5 feem pua ntawm gypsum (kom tswj lub sijhawm ntawm …
Cov khoom xyaw twg siv los ua cov cement portland?
Cov khoom siv siv los tsim cov cement xws li limestone, plhaub, thiab chalk lossis marl ua ke nrog shale, av nplaum, slate, blast furnace slag, silica xuab zeb, thiab hlau ore.
Cov khoom siv raw ntawm portland cement yog dab tsi?
Ob lub ntsiab lus tseem ceeb ntawm cov khoom siv portland cement yog cov khoom siv ntawm cov txiv qaub siab, xws li limestone, chalk, plhaub, lossis marl, thiab cov khoom siv ntawm cov silica siab. thiab alumina cov ntsiab lus xws li av nplaum, shale, los yog blast-kuav slag. Ib qho me me ntawm hlau tseem xav tau.
2 cov khoom xyaw tseem ceeb ntawm portland cement yog dab tsi?
Cov tshuaj tseem ceeb ntawm portland cement yog calcium, silica,alumina thiab hlau. Calcium yog muab los ntawm limestone, marl los yog chalk, thaum silica, alumina thiab hlau los ntawm cov xuab zeb, av nplaum thiab hlau ore.
