Qhov sib txawv tseem ceeb ntawm gypsum thiab phosphogypsum yog tias gypsum yog ib qho tshwm sim ntawm calcium sulfate, hos phosphogypsum yog ib hom hluavtaws ntawm calcium sulfate. Tshwj xeeb tshaj yog, gypsum yog pob zeb tsim, mos siv lead ua tau los ntawm mining lossis quarrying, tab sis phosphogypsum yog ib qho khoom los ntawm kev tsim cov superphosphate los ntawm phosphate pob zeb.
Yog li ntawd, ob qho tib si gypsum thiab phosphogypsum yog cov ntaub ntawv ntawm calcium sulfate. Ob lub tebchaw no muaj calcium sulfate hauv daim ntawv dihydrated.
Gypsum yog dab tsi?
Gypsum yog cov ntxhia uas muaj calcium sulfate, thiab nws muaj cov mis molecular CaSO 4·2H2O. Nws yog ib qho ntawm feem ntau sulfate minerals. Tsis tas li ntawd, nws yog cov pob zeb tsim cov pob zeb uas tuaj yeem loj hlob mus txog qhov loj heev. Thaum peb coj cov siv lead ua, feem ntau, cov xim ntawm cov siv lead ua yog dawb lossis tsis muaj xim, tab sis tuaj yeem muaj lwm qhov ntxoov ntxoo xws li grey, liab lossis daj. Tsis tas li ntawd, crystals kuj tuaj yeem tshwm sim ua pob tshab lossis translucent. Ntawm cov no, gypsum yog ib qho siv lead ua mos, uas tuaj yeem khawb txawm los ntawm tus ntiv tes. Tsis tas li, nws yog cov khoom siv tau yooj yim, thiab nws cov thermal conductivity tsawg.
Ntxiv mus, gypsum yog me ntsis soluble hauv dej, thiab thaum peb sov nws, dej yuav evaporate, thiab nws muaj peev xwm ua tiav lub xeev anhydride dua. Gypsum muaj nyob hauv ntau qhov chaw thoob plaws ntiaj teb (hauv UK, Russia, Canada, Africa, Asia, Tebchaws Asmeskas thiab Europe). Txawm li cas los xij, Gypsum muaj ntau nyob hauv Colorado thiab Mexico hauv Asmeskas.
Daim duab 01: Tshav pob gypsum
Txoj kev loj ntawm kev tsim cov khoom siv no yog los ntawm nag lossis daus ntawm dej hiav txwv. Thaum tsim cov minerals, dej los yog cov khoom tsis xav tau tuaj yeem ntxiab hauv cov khoom siv lead ua, uas yog qhov ua rau cov xim sib txawv. Tsis tas li ntawd, muaj peb hom gypsum. Lawv yog cov hauv qab no:
- Selenite
- Alabaster
Selenite yog crystalline nyob rau hauv cov xwm thiab yog pob tshab los yog translucent. Alabaster hlob mus rau hauv cov pob zeb hauv av loj heev. Nws muaj lub teeb xim los yog maj mam tinted xim vim impurities. Hauv qhov sib piv, satin spar yog fibrous lossis silky hauv qhov xwm txheej. Peb tuaj yeem siv cov khoom no los ua plaster ntawm Paris, qee cov cement, chiv (ammonium sulfate fertilizer), thiab ua pob zeb ornamental. Ntxiv rau cov no, gypsum kuj tseem siv tau zoo li cov quav thiab yog qhov zoo ntawm leej faj. Ntxiv mus, nws muaj peev xwm ua yas zoo li thaum peb sov nws mus txog 175 ° C. Qhov xwm ntawm Gypsum yog qhov tseem ceeb hauv kev tsim cov plaster ntawm Paris. Yog hais tias cov ntsiab lus ntawm CaSO4·2H2O hauv gypsum siab, nws yog qhov zoo heev hauv kev tsim cov chiv, plaster ntawm Paris thiab cement. Yog li ntawd, muaj kev thov siab rau cov ntshiab gypsum, uas muaj tsawg kawg yog 80% CaSO4·2H2O cov ntsiab lus.
Phosphogypsum yog dab tsi?
Phosphogypsum yog hais txog hydrated calcium sulfate uas tsim los ntawm cov khoom siv chiv los ntawm phosphate pob zeb. Qhov ntawd yog; Cov ntaub ntawv no tsim los ntawm cov khoom siv sab nraud thaum kho cov pob zeb phosphate nrog sulfuric acid kom tau txais superphosphate. Tsis tas li ntawd, phosphogypsum muaj cov dihydrate ntawm calcium sulfate. Yog li ntawd, cov tshuaj formula rau cov compound no yog CaSO42H2O. Qhov ntawd txhais tau tias, phosphogypsum feem ntau muaj gypsum. Txawm li cas los xij, tsis zoo li gypsum, phosphogypsum tsis yog siv ntau hauv kev tsim kho.
Daim duab 02: Phosphogypsum Stack
Ntxiv mus, phosphogypsum qhia tau hais tias tsis muaj hluav taws xob tsis muaj zog. Yog li ntawd, peb yuav tsum khaws nws kom zoo. Cov xov tooj cua ntawm cov khoom siv no feem ntau yog vim muaj qhov tshwm sim ntawm Uranium thiab Thorium thiab tus ntxhais isotopes ntawm cov ntsiab lus tam sim no hauv phosphogypsum.
Qhov txawv ntawm Gypsum thiab Phosphogypsum yog dab tsi?
Gypsum thiab phosphogypsum yog hydrated cov ntaub ntawv ntawm calcium sulfate. Txawm li cas los xij, qhov sib txawv tseem ceeb ntawm gypsum thiab phosphogypsum yog tias gypsum yog ib qho tshwm sim ntawm calcium sulfate, hos phosphogypsum yog ib hom hluavtaws ntawm calcium sulfate. Tsis tas li ntawd, peb tuaj yeem tau txais gypsum los ntawm kev tsuas los yog quarrying, thaum phosphogypsum ntau lawm yog los ntawm phosphate ntau lawm los ntawm phosphate pob zeb. Yog li, nyob rau hauv cov nqe lus ntawm txoj kev tsim, qhov no kuj yog qhov sib txawv ntawm gypsum thiab phosphogypsum.
Summary – Gypsum vs Phosphogypsum
Gypsum thiab phosphogypsum yog hydrated cov ntaub ntawv ntawm calcium sulfate. Qhov sib txawv tseem ceeb ntawm gypsum thiab phosphogypsum yog gypsum yog ib qho tshwm sim ntawm calcium sulfate, whereas phosphogypsum yog ib hom hluavtaws ntawm calcium sulfate.
