Kashiamu sulphate. mafotokozedwe

Masiku Mankwala Chemistry zofunika kwambiri salt gulu ndi katundu wa zinthu mogwirizana ndi mankhwala awo n'kotheka. Pali zinthu, pakati ena zatenga malo apadera. mankhwala amenewa liyenera kunena kashiamu sulphate. Chilinganizo mankhwala CaSO4.

madipoziti ndi lalikulu pawiri izi kutumphuka ndi kulola ntchito monga chuma yaiwisi pokonza zinthu zosiyanasiyana. Zipangizo chifukwa akhoza bwinobwino ntchito zomangamanga, mankhwala ndi zina.

anapeza madipoziti mchere wokhala ndi zikuchokera CaSO4 2 H2O Mu zinthu zachilengedwe. Kashiamu sulphate ndi anapezeka ku nyanja (za 1800 000 tonnes pa mita kiyubiki) ndi madzi abwino.

CaSO4 anhydride ndi ufa woyera kachulukidwe wa magalamu 2.90-2.99 pa centimeter kiyubiki. Pawiri mwachangu zimatenga chinyezi mpweya. Chifukwa cha chuma ichi, ndi calcium sulphate ntchito monga kuyanika wothandizila.

Pa kutentha zikwi mazana anayi makumi asanu chimasungunula madigiri chinthu ndi linawola. The solubility wa thunthu kumatheka pamaso pa HCl, HNO3, NaCl, MgCl2. Kashiamu sulphate amachitira ndi asidi sulfuric yafupika pamene sintering ndi mpweya.

Kukhala madzi pamodzi ndi MgSO4 ndi MgCl2, CaSO4 chinthu chimodzimodzi aipatsa zonse. Mankhwala olimbikitsa madzimadzi n'zotheka ndi reagents lapansi. Kuchepetsa wa kuuma kwa madzi zochokera oyamba zinthu Polemeretsedwa anions ake.

Olimbikitsa madzi anagwiritsanso ndi kuwombola ion. Njira imeneyi zinachokera pa luso la ena kuzizira kupanga ndi masoka ion - mankhwala apamwamba maselo - kusinthana ankafuna kusintha zinthu mopitirira m'gulu zikuchokera awo, pa ayoni pano mu njira. Monga ion ndalama zambiri zinthu aluminosilicates (Na2 [Al2Si2O8] ∙ nH2O Mwachitsanzo).

Hydrate ndi zikuchokera 2CaSO4 H2O - Alabasitala (kuwotchedwa gypsum) - ntchito popanga zipangizo cementitious. zinthu izi kuimira mankhwala pulverulent, umene pamene wothira mitundu madzi pulasitiki choyamba, ndipo kenako kulimbitsa mu kulemera olimba thupi. Kukonzekera ndondomeko ikuchitika alabasitala gypsum calcination mchikakamizo cha kutentha kwa makumi asanu zana digiri zana makumi asanu ndi awiri. Mundawu ntchito kupanga mapanelo kugawa ndi matabwa, amatha kuumba zinthu, komanso kukhazikitsa kupaka pulasitala.

Calcination mchikakamizo cha kutentha madigiri oposa mazana awiri kumabweretsa mapangidwe a mtundu sungunuka kashiamu sulphate anhydrous, pa kutentha madigiri woposa mazana asanu - insoluble mawonekedwe. Yotsirizira wotaya umatha angagwirizanitse madzi kotero, sanali ntchito monga binder ndi.

Natural gypsum angagwiritsidwe ntchito ngati poyambira nkhani yokonza simenti ndi asidi sulfuric mwa njira ophatikizana.

Natural kashiamu sulphate Angagwiritsidwenso ntchito monga desiccant mu kusanthula mankhwala organic. Pawiri anhydrous akhoza kuyamwa chinyontho 6,6% ya kulemera okwana. Kashiamu sulphate amagwiritsidwanso ntchito popanga zipangizo chimateteza.