Tsav los ntawm ob qho tib si thoob ntiaj teb cov hom phiaj ntawm cov pa roj carbon monoxide thiab cov kev txwv ecological, phosphate chemical kev lag luam, raws li cov peev txheej -raws li kev lag luam, tab tom ntsib kev hloov pauv tseem ceeb los ntawm kev nthuav dav ib txwm mus rau ntsuab thiab siab - kev loj hlob zoo. Qhov kev vam meej ntawm qhov kev hloov pauv no tsis tsuas yog cuam tshuam txog kev ruaj ntseg ntawm cov saw hlau, tab sis kuj muaj kev cuam tshuam loj heev rau txoj kev loj hlob ntawm cov dej hauv qab xws li kev ua liaj ua teb, cov khoom siv tshiab, thiab lub zog tshiab.
Tam sim no, cov teeb meem tseem ceeb ntawm ntsuab thiab qis - carbon transformation nyob rau hauv phosphate chemical kev lag luam yog concentrated nyob rau hauv peb yam: Ua ntej, lub zog noj thiab cov khoom pov tseg emissions thaum lub sij hawm phosphate mining thiab beneficiation txheej txheem. Cov txheej txheem ib txwm muaj cov nqi rov qab tsis txaus rau cov peev txheej xws li fluorine thiab iodine, yooj yim ua rau cov peev txheej pov tseg thiab ib puag ncig siab. Qhov thib ob, qhov siab - qhov kub ntawm lub zog noj thiab cov pa roj carbon emission siv hauv kev tsim cov ntub dej - txheej txheem phosphoric acid thiab daj phosphorus yog qhov tseem ceeb, thiab qee lub lag luam tseem cia siab rau cov roj fossil rau cua sov, tawm hauv chav rau kev txo cov pa roj carbon ntxiv. Thib peb, cov kev tsis sib haum xeeb hauv kev siv thev naus laus zis ntawm phosphogypsum tsis tau kov yeej tag nrho, thiab kev ua haujlwm hauv av thiab muaj peev xwm ua rau muaj kev phom sij cuam tshuam nrog kev khaws cia thiab pov tseg txwv kev txhim kho kev lag luam cov duab ntsuab.
Txhawm rau hais txog cov ntsiab lus mob no, kev hloov pauv kev lag luam tau tsim ntau txoj hauv kev -seem. Ntawm cov peev txheej kev ua tau zoo, kev sib koom ua ke ntawm kev siv tshuab thev naus laus zis thev naus laus zis thiab cov thev naus laus zis thev naus laus zis tuaj yeem txhim kho tus nqi rov qab ntawm phosphate pob zeb thiab kev siv dav dav ntawm cov peev txheej los ntawm kev txheeb xyuas meej. Qee qhov kev ua qauv qhia tau ua tiav cov khoom siv fluorine rov qab los ntawm ntau dua 90%, thaum tib lub sijhawm txo cov tailings tiam. Ntawm cov txheej txheem kev tsim kho tshiab, qhov loj - nplai thiab kaw- lub voj hloov pauv ntawm cov hluav taws xob hluav taws xob daj phosphorus, nrog rau kev siv hluav taws xob pov tseg, tuaj yeem txo cov khoom siv hluav taws xob los ntawm 15%-20%. Kev taw qhia ntawm cov extractants tshiab thiab cov tshuab sib cais membrane rau hauv cov txheej txheem ntub dej phosphoric acid extraction txhim kho phosphoric acid purity thaum txo sulfuric acid noj thiab cov dej khib nyiab. Nyob rau sab kev lag luam kev lag luam, qhov loj - kev txhawb nqa thev naus laus zis xws li phosphogypsum rau cov khoom siv hauv tsev thiab cov khoom siv hauv kev, ua ke nrog "tsim raws li slag" txoj cai, yog tsav cov kev siv dav dav los ntawm tsawg dua 40% mus rau ntau dua 60%. Qee thaj chaw tau tshawb nrhiav qhov kaw- qauv voj voog rau kev sib koom ua ke ntawm sulfuric acid thiab cement los ntawm phosphogypsum, paub txog kev siv cov khoom siv sulfur.
Lub synergistic nyhuv ntawm txoj cai kev taw qhia thiab kev ua lag luam mechanisms injects nruam zog mus rau hauv lub transformation. Lub "14th Tsib-Xyoo Plan rau Kev Txhim Kho Cov Khoom Raw Industries" qhia meej meej suav nrog cov tshuaj phosphate ua thaj chaw tseem ceeb rau kev hloov pauv ntsuab, nrog rau kev txhawb nqa se thiab cov cai qiv nyiaj ntsuab uas nyiam cov haujlwm qis - carbon. Kev nce siab hauv kev thov rau siab -purity hlau phosphate los ntawm cov roj teeb hluav taws xob qis qis yog yuam cov tuam txhab lag luam los txhim kho cov khoom purity thiab huv huv ntau lawm, tsim kom muaj lub voj voog zoo ntawm "xav tau-tsav kev hloov kho ntawm cov khoom siv."
Saib tom ntej, kev lag luam tshuaj phosphate yuav tsum tau ntxiv dag zog rau kev tsim kho thev naus laus zis thiab hla- kev lag luam kev koom ua ke. Los ntawm tag nrho - saw ntsuab tsim encompassing phosphate pob zeb, tshuaj lom neeg, lub zog tshiab, thiab cov khoom siv hauv tsev, nws yuav tsum txhawb kev tsim kho ntawm qhov kaw- lub voj kaw lus ntawm "peev txheej- khoom- siv dua tshiab." Tsuas yog nyob rau hauv txoj kev no nws tuaj yeem ua tiav kev sib koom ua ke hauv cov txiaj ntsig ntawm ecological thiab kev lag luam thaum ua kom muaj kev ruaj ntseg ntawm cov khoom noj thiab cov khoom siv raw khoom, muab cov tshuaj suav rau kev hloov pauv ntsuab ntsuab ntawm phosphate -raws li kev lag luam.
