Limestone kuj yog siv los tshem tawm cov impurities ntawm lub qhov cub tawg thaum ua hlau. Cov impurities feem ntau yog silicon dioxide (tseem hu ua xuab zeb). Calcium carbonate nyob rau hauv limestone reacts nrog silicon dioxide tsim calcium silicate (tseem hu ua slag).
txheej txheem dab tsi tshwm sim rau cov limestone ntxiv rau qhov cub tawg?
Limestone ntxiv rau hauv qhov cub tawg decomposes muab CaO uas ua rau slag hauv lub xeev molten thiab cais tawm ntawm hlau.
Dab tsi ntxiv rau lub qhov cub tawg?
tawg rauv, lub qhov cub ntsug ntsug uas tsim cov hlau ua kua los ntawm cov tshuaj tiv thaiv ntawm cov cua ntws los ntawm kev nkag siab hauv qab ntawm lub qhov cub nrog sib xyaw ntawm cov hlau ore, coke, thiab flux pub. mus rau sab saum toj.
Vim li cas limestone ntxiv rau qhov cub tawg hauv kev rho tawm cov hlau los ntawm haematite?
Limestone tshem tawm cov impurities uas muaj nyob hauv cov hlau ore. Qhov no ua tiav vim tias, thaum kub kub, calcium carbonate yuav raug thermal decomposition rau calcium oxide. Cov calcium oxide ces reacts nrog cov acidic impurities (tsuas yog silica) tam sim no nyob rau hauv cov hlau ore los ua molten slag (calcium silicate).
Yuav ua li cas rau limestone nyob rau hauv cub tawg?
Thib Ob - limestone decomposes hauv tshav kub los tsim calcium oxide (quicklime) thiab carbon dioxide. Lub limestone undergoes thermaldecomposition. Qhov thib peb - cov pa roj carbon dioxide reacts nrog ntau cov pa roj carbon monoxide tsim carbon monoxide.
