Calcium sulfate. nkọwa

Na Modern Inorganic Chemistry oké mkpa salts nhazi ọkwa na Njirimara nke mmekọrịta ihe na ha niile kwere omume ogige. E nwere bekee, n'etiti ndị ọzọ ogide a pụrụ iche ebe. Ndị dị otú ahụ ogige karịsịa kwesịrị-ezo calcium sulfate. Formula umi CaSO4.

Dịtụ nnukwu ego a compound na jikọrọ ọnụ ekwe na ya iji dị ka a akụrụngwa na nkwadebe dị iche iche ihe. Ihe ihe nwere ike n'ụzọ gara nke ọma na-eji na-ewu, na nkà mmụta ọgwụ na n'ebe ndị ọzọ.

hụrụ ịnweta ego na-enwe a mejupụtara nke CaSO4 2 H2O Na eke ọnọdụ. Calcium sulfate na-hụrụ na oké osimiri (banyere 1800 000 ise kwa cubic mita) na ọhụrụ mmiri.

CaSO4 anhydride bụ a na-acha ọcha ntụ ntụ njupụta nke 2.90-2.99 grams kwa cubic sentimita. Onyinye ifịk ifịk na-amịkọrọ mmiri si na ikuku. N'ihi nke a property, na calcium sulfate eji dị ka ihicha n'ụlọnga.

Na okpomọkụ puku na narị anọ na iri ise degrees umi agbazenụ na erekasịchaala. The solubility nke umi na-enwekwukwa n'iru HCl, HNO3, NaCl, MgCl2. Calcium sulfate mkpatụ na igirigi ibu sulphuric acid na-ebelata mgbe sintering na carbon.

N'ịbụ mmiri ọnụ na MgSO4 na MgCl2, CaSO4 rigidity na-enye ya a mgbe nile. Chemical softening ọmụmụ bụ omume na reagents. Mbelata ekweghị ekwe nke mmiri dabeere na iwebata bekee mma ya anions.

Softening nke mmiri a na-rụrụ site ion mgbanwe. Nke a na usoro dabeere na ike nke ụfọdụ sịntetik na eke ion exchangers - elu-molekụla ogige - inyerịta radicals gụnyere ha mejupụtara, na ion ugbu a na ihe ngwọta. Ka ion exchangers mgbe eme aluminosilicates (Na2 [Al2Si2O8] ∙ nH2O, n'ihi na ihe atụ).

Hydrate na mejupụtara 2CaSO4 H2O - alabasta (nsure gypsum) - eji na imewe nke cementitious ihe. Ndị bekee na-anọchi anya a pulverulent ogige, nke mgbe weere mmiri forms plastic mbụ, na ekemende solidifying n'ime a siri ike ahu aro. Nkwadebe usoro a rụrụ alabasta gypsum calcination n'okpuru nduzi nke okpomọkụ site na otu narị na iri ise na otu narị na iri asaa degrees. Nke a ihe onwunwe na-eji na imewe nke nkebi ogwe na mbadamba, Ebu ihe, nakwa dị ka na mmejuputa plasta.

Calcination n'okpuru nduzi nke okpomọkụ karịa abụọ na narị abụọ degrees-eduga ná guzobe nke soluble ụdị calcium sulfate anhydrous, na okpomọkụ ukwuu karịa narị ise degrees - unyi anaghị agbasa na ụdị. Nke ikpeazụ na-efunari ya ike itinye mmiri mere ike-eji dị ka a nragide.

Natural gypsum nwere ike ji mee ka a na-amalite ihe onwunwe ke nkwadebe nke ciment na igirigi ibu sulphuric acid site jikọtara usoro.

Natural calcium sulphate nwekwara ike-eji dị ka a desiccant na analysis of organic ogige. The anhydrous compound bụ ike banye mmiri 6,6% nke ngụkọta arọ. Calcium sulfate a na-eji ke imewe nke-egbochi ihe ihe.