Magnesium sulfate heptahydrate, tseem hu ua sulphobitter, iab ntsev, cathartic ntsev, Epsom ntsev, tshuaj formula MgSO4·7H2O), yog dawb los yog tsis muaj xim acicular los yog oblique columnar crystals, tsw, txias thiab iab me ntsis.Tom qab cua sov decomposition, cov dej crystalline maj mam muab tshem tawm mus rau anhydrous magnesium sulfate.Nws yog tsuas yog siv rau hauv kev tsim cov chiv, tawv, luam ntawv thiab dyeing, catalyst, papermaking, plastics, porcelain, pigments, ntais ntawv, explosives thiab fireproof ntaub ntawv.Nws tuaj yeem siv rau luam ntawv thiab dyeing nyias paj rwb ntaub thiab txhob lo lo ntxhuav, ua tus neeg sawv cev hnyav rau paj rwb thiab muab tub lim rau cov khoom kapok, thiab siv los ua Epsom ntsev hauv tshuaj.
Lub cev muaj zog:
Cov tsos thiab cov khoom: belongs rau rhombic siv lead ua system, rau plaub fab granular los yog rhombic siv lead ua, tsis muaj xim, pob tshab, aggregate rau dawb, sawv los yog ntsuab iav luster.Cov duab yog fibrous, acicular, granular los yog hmoov.Tsis muaj ntxhiab, iab saj.
Solubility: Yooj yim soluble hauv dej, me ntsis soluble hauv ethanol thiab glycerol.
Chemical Properties:
Kev ruaj ntseg: ruaj khov nyob rau hauv cov huab cua ntub hauv qab 48.1 ° C. Nws yog ib qho yooj yim kom haum rau hauv huab cua sov thiab qhuav.Thaum nws siab tshaj 48.1 ° C, nws poob dej crystalline thiab ua khawv koob sulfate.Nyob rau tib lub sijhawm, magnesium sulfate yog precipitated.Ntawm 70-80 ° C, nws poob 4 siv lead ua dej, poob 5 siv lead ua dej ntawm 100 ° C, thiab poob 6 siv lead ua dej ntawm 150 ° C. Ntawm 200 ° C Magnesium-zoo li dej sulfate, cov khoom dehydrated yog muab tso rau hauv cov huab cua ntub. kom rov nqus dej.Nyob rau hauv cov tshuaj saturated magnesium sulfate, cov dej sib xyaw ua ke crystalline nrog 1, 2, 3, 4, 5, 6, thiab 12 dej tuaj yeem siv lead ua.Nyob rau hauv -1.8 ~ 48.18 ° C saturated aqueous tov, magnesium sulfate yog precipitated, thiab nyob rau hauv lub saturated dej tov ntawm 48.1 mus rau 67.5 ° C, magnesium sulfate yog precipitated.Thaum nws siab tshaj 67.5 ° C, magnesium sulfate yog precipitated.Alien melting ntawm ° C thiab magnesium sulfate ntawm tsib los yog plaub dej sulfate raug generated.Magnesium sulfate tau hloov mus rau hauv magnesium sulfate ntawm 106 ° C. Magnesium sulfate tau hloov mus rau magnesium sulfate ntawm 122-124 ° C. Magnesium sulfate hloov mus rau hauv magnesium sulfate ruaj khov ntawm 161 ~ 169 ℃.
Toxicity: Poisonous
PH tus nqi: 7, Neutral
Daim ntawv thov tseem ceeb:
1) Cov zaub mov
Raws li tus neeg sawv cev txhawb nqa khoom noj.kuv lub teb chaws txoj cai yuav siv tau rau cov khoom siv mis nyuj, nrog rau tus nqi ntawm 3 mus rau 7g / kg;tus nqi ntawm kev siv dej haus thiab dej haus yog 1.4 ~ 2.8g / kg;Qhov siab tshaj plaws siv hauv cov dej ntxhia yog 0.05g / kg.
2) Industrial field
Nws feem ntau yog siv nrog calcium ntsev rau wine niam dej.Ntxiv rau 4.4g / 100L dej tuaj yeem ua kom qhov tawv tawv los ntawm 1 degree.Thaum siv, nws tuaj yeem tsim iab thiab tsim cov ntxhiab hydrogen sulfide.
Siv raws li lub suab nrov, tawg, papermaking, porcelain, chiv, thiab kho qhov ncauj laxes, thiab lwm yam., ntxhia dej additives.
3) Kev ua liaj ua teb
Magnesium sulfate yog siv rau hauv cov chiv hauv kev ua liaj ua teb vim magnesium yog ib qho tseem ceeb ntawm chlorophyll.Cov qoob loo ntawm potted nroj tsuag los yog magnesium feem ntau yog siv, xws li txiv lws suav, qos yaj ywm, roses, thiab lwm yam Magnesium sulfate muaj ib tug high degree ntawm solubility piv rau lwm yam chiv.Magnesium sulfate kuj tseem siv los ua ntsev da dej.
Txoj kev npaj:
1) Txoj Kev 1:
Sulfuric acid yog ntxiv rau ntuj magnesium carbonate (magnesite), carbon dioxide raug tshem tawm, recrystallized, Kieserite (MgSO4·H2O) yog yaj hauv dej kub thiab recrystallized, ua los ntawm dej hiav txwv.
2) Txoj Kev 2 (Seawater leaching method)
Tom qab cov brine yog evaporated los ntawm txoj kev brine, lub siab kub ntsev yog tsim, thiab nws muaj pes tsawg leeg yog MgSO4>.30 feem pua.35%, MgCl2 txog 7%, KCl txog 0.5%.Cov iab tuaj yeem leached nrog MgCl2 tov ntawm 200g / L ntawm 48 ℃, nrog tsawg NaCl tov thiab ntau MgSO4 tov.Tom qab kev sib cais, cov hmoov txhuv nplej siab MgSO4·7H2O tau ua los ntawm qhov txias ntawm 10 ℃, thiab cov khoom tiav tau txais los ntawm cov txheej txheem recrystallization theem nrab.
3) Txoj Kev 3 (Sulfuric acid method)
Hauv lub tank neutralization, rhombotrite maj mam ntxiv rau hauv dej thiab niam cawv, thiab tom qab ntawd neutralized nrog sulfuric acid.Cov xim hloov ntawm lub ntiaj teb xim mus rau liab.Cov pH raug tswj kom Be 5, thiab cov txheeb ze ntom ntom yog 1.37 ~ 1.38 (39 ~ 40 ° Be).Cov tshuaj neutralization tau lim ntawm 80 ℃, tom qab ntawd pH tau hloov mus rau 4 nrog sulfuric acid, cov noob tsim nyog tau ntxiv, thiab txias rau 30 ℃ rau crystallization.Tom qab sib cais, cov khoom tiav yog qhuav ntawm 50 ~ 55 ℃, thiab niam cawv rov qab mus rau lub tank neutralization.Magnesium sulfate heptahydrate kuj tseem tuaj yeem npaj los ntawm cov tshuaj tiv thaiv tsis tshua muaj sulfuric acid nrog 65% magnesia hauv momorrhea los ntawm kev pom, nag lossis daus, concentration, crystallization, centrifugal sib cais thiab dryness, nws yog tsim los ntawm magnesium sulfate.
Cov tshuaj sib xyaw ua ke: MgO + H2SO4 + 6H2O → MgSO4 · 7H2O.
Kev ceev faj txog kev thauj mus los:Lub ntim yuav tsum ua kom tiav thaum thauj khoom, thiab kev thauj khoom yuav tsum muaj kev nyab xeeb.Thaum lub sij hawm kev thauj mus los, xyuas kom meej tias lub thawv yuav tsum tsis txhob xau, tawg, poob, lossis puas.Nws yog nruj me ntsis txwv tsis pub sib tov nrog acids thiab edible tshuaj.Thaum lub sij hawm kev thauj mus los, nws yuav tsum tau tiv thaiv los ntawm tshav ntuj raug, nag thiab kub.Lub tsheb yuav tsum tau ntxuav kom huv si tom qab kev thauj mus los.
Kev ceev faj ua haujlwm:Kaw ua haujlwm thiab ntxiv dag zog rau qhov cua.Tus neeg teb xov tooj yuav tsum nruj me ntsis raws li cov txheej txheem ua haujlwm tom qab kev cob qhia tshwj xeeb.Nws raug nquahu kom cov neeg ua haujlwm hnav lub ntsej muag lub ntsej muag plua plav plua plav, tshuaj lom neeg tiv thaiv tsom iav, hnav khaub ncaws tiv thaiv kev nkag mus ua haujlwm, thiab hnab looj tes roj hmab.Tsis txhob muaj plua plav.Tsis txhob sib cuag nrog cov kua qaub.Lub teeb thiab maj mam tshem tawm cov ntim kom tsis txhob ntim khoom puas.Nruab nrog cov khoom siv kho mob thaum muaj xwm ceev.Cov thawv khoob yuav ua rau muaj teeb meem seem.Thaum cov plua plav concentration hauv huab cua tshaj li tus qauv, peb yuav tsum hnav lub npog ntsej muag tus kheej-suction plua plav.Thaum muaj xwm txheej ceev lossis khiav tawm, yuav tsum hnav lub npog ntsej muag tiv thaiv kab mob.
Kev ceev faj cia:Khaws rau hauv qhov chaw txias, ventilated warehouse.Nyob deb ntawm hluav taws thiab cua sov.Khaws cais los ntawm cov kua qaub thiab tsis txhob sib xyaw cia.Qhov chaw cia khoom yuav tsum tau nruab nrog cov ntaub ntawv tsim nyog kom muaj cov xau.
Ntim: 25KG / hnab
Lub sij hawm xa tuaj: Plaub Hlis-10-2023