Ikirahuri cyiziritse cyavumbuwe mu 1865. Ikirahuri gikingira ni ibikoresho byubaka bifite ubushyuhe bwiza, kubika amajwi, byiza kandi bifatika, kandi birashobora kugabanya uburemere bwinyubako.Ikozwe mu kirahure cyiza cyane cyikirahure cyibirahuri bibiri (cyangwa bitatu) ukoresheje imbaraga nyinshi hamwe nubucucike bwa gaze mwinshi bifatanyiriza hamwe guhuza ikirahuri na aluminiyumu ya aluminiyumu irimo desiccant.
Ikirangantego cya aluminiyumu
Umwanya wa aluminium ushyigikiwe kandi utandukanijwe nibice bibiri byikirahure bingana, icyogajuru cya aluminiyumu cyuzuyemo ibyuma byangiza ibirahuri bya molekile ya sikeli (uduce), kugirango bibe umwanya wo gufunga hagati yikirahure.
Gukingura ibirahuri bya molekuline birashobora gukurura amazi hamwe n’ibisigisigi byanduye biri imbere muri yo, ibyo bigatuma ikirahuri gikingira isuku kandi kibonerana ndetse no mu bushyuhe buke cyane, kandi birashobora no gutandukanya itandukaniro rikomeye ry’imbere n’imbere ryatewe n’imihindagurikire nini y’ubushyuhe .Ikirahuri cyizunguza ikirahure nacyo gikemura ikibazo cyo kugoreka no kumeneka biterwa no kwaguka cyangwa kugabanuka kwikirahure, kandi bikongerera igihe cyakazi cyikirahure.
Gushyira mu byuma bya molekulari yikaraga:
1) ibikorwa byo kumisha: gukuramo amazi ava mubirahuri bidafite akamaro.
2) Ingaruka zo kurwanya ubukonje.
3) Isuku: adsorb umukungugu ureremba mukirere.
4) ibidukikije: birashobora gutunganywa, bitangiza ibidukikije
Gukomatanya ibipapuro byerekana ubwoko bwa kashe
Gukingira kashe ni ikusanyirizo rya spacer hamwe nigikorwa cyo gushyigikira ikaramu ya aluminiyumu, umurimo wo kumisha ibirahuri bya molekile ya sikeri (ifu), imikorere yo gufunga kashe ya butyl, hamwe nimbaraga zuburyo bwimikorere ya kole ya polysulfide, insinga yikirahure yikirahure irashobora kugororwa muburyo ubwo aribwo bwose hanyuma ushyire ku kirahure.
Ibicuruzwa bifitanye isano: JZ-ZIG icyuma cya molekile, JZ-AZ icyuma cya molekile