Imfundo:Isayensi

I-calcium sulphate. Incazelo

Esimweni samakhemikhali engavamile, ukuhlukaniswa kosawoti, ukusebenzisana nezakhiwo zezinto kanye nezinhlanganisela zabo ezihlukahlukene kubaluleke kakhulu. Kunezinto ezithatha izindawo ezikhethekile phakathi kwabanye. Ama-compounds anjalo, ikakhulukazi, kufanele afake i-calcium sulphate. Ifomu yezinto eziphilayo CaSO4.

Izindleko ezinkulu ezilinganayo zalesi sakhi emgqeni womhlaba kwenza kube lula ukuyisebenzisa njengento eluhlaza ekutholeni izinto ezihlukahlukene. Izinto ezitholakalayo zingasetshenziswa ngempumelelo ekwakhiweni, emithi naseminye imikhakha.

Ezimweni zemvelo zemvelo, idiphozi ye-amaminerali ene-CaSO4 2 H2O iyatholakala. I-calcium sulphate itholakala nasolwandle (cishe ngamathani angu-1800 000 ngamamitha ayi cubic) namanzi amasha.

I-Anhydride CaSO4 iyi-powder emhlophe ene-2.90-2.99 amagremu ngamentimitha angu-cubic ngalinye. Le nhlanganisela ithatha umswakama emoyeni. Ngenxa yalesi sakhiwo, i-calcium sulfate isetshenziswa njenge-desiccant.

Ekushiseni kwamadirethi ayizinkulungwane eziyikhulu namashumi amahlanu isisulu siyancibilika futhi sidilika. I-solubility yezinto ezibonakalayo ithuthukiswa phambi kweHCl, HNO3, NaCl, MgCl2. I-sulphate ye-calcium iphendula nge- sulfuric acid, uma i-sintered ne-carbon ibuyiselwa.

Ukuba ngamanzi kanye ne-MgSO4 ne-MgCl2, i-CaSO4 inika ukuqina okuqhubekayo. Ukunciphisa uketshezi ketshezi kungenzeka ngosizo lwama-reagents. Ukunciphisa ubulukhuni bamanzi kusekelwe ekusungulweni kwezinto ezicebisiwe kuma-anions alo.

Ukunciphisa amanzi kuyenziwa nangendlela yokushintshanisa ion. Le ndlela isekelwe emandleni okuthengiswa kwe-ioni ngabanye kanye nemvelo - ama-high-molecular compounds - ukushintshanisa ama-radicals akha ukwakheka kwawo, ion ikhona esixazululweni. Ama-Aluminosilicates (Na2 [Al2Si2O8] ∙ nH2O, isibonelo) ngokuvamile asetshenziswa njengama-exchange exchanges.

Hlulela nge-2CaSO4 H2O - alabaster (ukushiswa gypsum) - isetshenziselwa ukwenza izibophezelo. Lezi zinto ziyi-powdery compounds, lapho, lapho ixubene namanzi, i-plastic mass isakhiwo kuqala bese iqinisa umzimba. Ukukhiqizwa kwe-alabaster kwenziwa ngenkathi kukhishwa i-gypsum ngaphansi kwethonya lokushisa kusuka emazingeni ayikhulu namashumi amahlanu kuya kwangukhulu namashumi ayisikhombisa. Le ndawo isetshenziselwa ukukhiqizwa kwezindonga zokwahlukana kanye nama-slabs, izinto ezikhungethweyo, kanye nokwehla.

Ukudubula ngaphansi kwefuthe lokushisa okungaphezu kwama-degrees angamakhulu amabili kuholela ekubunjweni kwe-calcium sulfate anhydrous, ekushiseni kwamazinga angaphezu kwamakhulu amahlanu - ifomu elingenasibindi. Lo mkhuba ulahlekelwa amandla okunamathela kwamanzi, ngokuphathelene nalokhu angeke asetshenziswe njengento ephathelene nokushaya astringent.

I-gypsum yemvelo ingasetshenziswa njengezinto zokuqala ekukhiqizeni isamende ne-sulfuric acid ngendlela ehlanganisiwe.

I-calcium sulfate yemvelo ingasetshenziswa njenge-desiccant ekuhlaziyweni kwama-organic compounds. I-anhydrous compound iyakwazi ukuthatha umswakama 6.6% kusukela kulo lonke ubukhulu. I-calcium sulphate nayo isetshenziswa ekukhiqizeni izinto zokushisa ezishisayo.

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