Clay bonded refractory castable shi ma an fi amfani da shi, ko da yake refractoriness bai fi high aluminum refractory castable, amma farashin ne in mun gwada da arha, a karkashin mataki na sodium hacetaphosphate dispersant da coagulant, m samu aikin yi, zazzabi da kuma low zazzabi. ƙarfi. Saboda haka, a cikin yumbu- bonded refractory castable, kawai dispersant iya cikakken tarwatsa lãka barbashi don rage mugunya na yumbu barbashi, yayin da sodium hexametaphosphatine iya taka mai kyau watsawa rawa a cikin yumbu- bonded refractory castable, sabõda haka, yumbu- bonded. refractory castable yana da kyau ruwa da kuma constructability, don tabbatar da kyau high zafin jiki yi.
Haɗin mahaɗin yumbu refractory castable ya bambanta. Clay hade tare da refractory castable yana da takamaiman buƙatun ƙididdiga don yumbu: AL2O3 shine 29% ~ 35%, Fe2O3 shine ƙasa da 1.8%, K2O shine ƙasa da 1.1%, an rage ƙonewa zuwa 10% ~ 14%, refractoriness ya fi girma fiye da 1670 ℃, kuma yana da kewayon zafin jiki mai faɗi, a cikin abun da ke cikin ma'adinai yakamata ya ƙunshi ƙaramin adadin montmorillonite da mica. da sauran abubuwa, ta yadda ya kasance yana da kyau bonding da roba. Fiye da 60% na yumbu ya kamata ya zama ƙasa da 0.088mm bayan niƙa, kuma adadin sa shine 7% -13%.
Refractory aggregate yafi amfani da yumbu clinker da high bauxite clinker, babban girman 10mm, janar aggregate asusun na kusan 70%, fine foda zaɓi na musamman ko A high bauxite clinker don nika, wani lokacin kuma gauraye da aluminum foda ko corundum foda, kasa da 0.088mm asusun. fiye da 85%, a castable 17% ~ 25%.
Janar selection na high aluminum ciminti ko tsarki calcium ciminti a matsayin hardening wakili, da sashi ne 0.2% ~ 3.0%, a cikin lãka colloidal watsawa tsarin, ƙara alkali karfe ions a matsayin dispersant, iya samar da alkali ion yumbu, saboda alkali ions da karfi positivity, m bambanci, m karfi tsakanin lãka barbashi. Akwai ƙarin cations a cikin yumbu, kuma tazara na barbashi yana ƙaruwa, wanda ke haɓaka gel ɗin colloidal na yumbu, yana fitar da ruwa kyauta, yana haɓaka ɗimbin simintin gyare-gyare, kuma yana ba da damar yin gyare-gyare.
Idan aka kwatanta da aluminate simintin refractory castable, na kowa yumbu refractory castable yana da halaye na babban ƙarfi, babu raguwa a ƙarfi a matsakaici zafin jiki da kuma juriya ga spalling. Idan aka kwatanta da filastik, yana da halaye na ginin da ya dace da sauƙin ajiya. Yawan zafin jiki na amfani da shi shine 1400 -- 1500 ℃.Sodium hexametaphosphate(Hexametaphosphate) an yi amfani da shi sosai a cikin tanderun wuta kamar yumbu mai jujjuyawa tanderun murhu da tanderun dumama.
Lokacin aikawa: Fabrairu-13-2023
