Zvidhinha zveMagnesium-Chromium: Mutsipa Usingatsvi weIndasitiri yeSimbi

Indasitiri yesimbi ndiyo musimboti wezvivakwa zvepasi rose, asi inoshanda mune imwe yenzvimbo dzinopisa zvakanyanya pasi rose. Kubva pakupisa kwakanyanya kwekunyungudutswa kwesimbi kusvika pakunyatsogadzirwa kwesimbi, michina yakakosha senge ma converter, ma arc furnaces emagetsi, uye ma blast furnaces anotarisana nekushushikana kusingaperi: inofanira kugara ichitarisana nekupisa kunowanzo pfuura 1,600°C, pamwe chete nekukukurwa kwakasimba kubva mutsvina yakanyungudutswa nesimbi inopisa. Mamiriro ezvinhu aya akaipisisa anoisa zvinodiwa zvisingaenzaniswi pazvinhu zvinoramba zvichiramba—zvikamu zvinodzivirira zvinodzivirira michina kubva mukukuvadzwa—uye pakati pezvose zvingasarudzwa,zvidhinha zve magnesium-chromiumzvinobuda semhinduro yekupedzisira uye yakavimbika.​

Zvidhinha zveMagnesium-chromium zvine chinzvimbo chazvo chisingaenzaniswi muindasitiri yesimbi nekuda kwezvinhu zvitatu zvikuru, zvisingakundike zvinogadzirisa dambudziko guru rekugadzirwa kwesimbi inopisa. Chekutanga, kudzivirira kwavo moto kwakanyanya kunochinja zvakanyanya kuchengetedzeka uye kushanda zvakanaka: nechiyero chekusasimba kwepamusoro pe1,700°C, zvidhinha izvi zvinochengetedza chimiro chazvo kunyangwe munzvimbo dzinopisa zvikuru dzezvitofu zvekugadzira simbi. Kusiyana nezvinhu zvisina simba zvinogona kupfava kana kunyunguduka kana kupisa kwakanyanya, zvidhinha zveMagnesium-chromium zvinobvisa njodzi yekukundikana kwemidziyo kamwe kamwe, izvo zvinogona kumisa mitsetse yekugadzira uye kutungamira kunonoka kunodhura. Chechipiri, kudzivirira kwavo kwakanyanya kwetsvina kunobata zvakananga imwe yematambudziko makuru ekugadzirisa indasitiri yesimbi. Zvichiumbwa nemagnesium oxide nechromium oxide yakachena kwazvo, zvidhinha izvi zvinoumba chipingamupinyi chakakora, chisingapindi mvura chinodzinga slags dzealkaline neacidic - zvigadzirwa zvakajairika zvekugadzirwa kwesimbi zvinodya linings dzemazuva ese. Kudzivirira uku kunowedzera hupenyu hwe lining yechoto ne30% kana kupfuura zvichienzaniswa ne refractories dzakajairwa, zvichideredza mari yekutsiva nguva nenguva uye kuderedza nguva yekusashanda yakarongwa. Chechitatu, kugadzikana kwavo kwakanaka kwekupisa kunoita kuti zvinhu zvirambe zvichishanda zvakanaka panguva dzekushanda kwakakosha. Kana maovheni atanga kana kudzimwa, tembiricha dzinogona kuchinja-chinja nemazana emadhigirii munguva pfupi—kushushikana kunoita kuti zvidhinha zvakawanda zvitsemuke kana kupwanyika. Zvisinei, zvidhinha zveMagnesium-chromium zvinotora kushanduka uku nyore nyore, zvichichengetedza jira rayo risina kukuvadzwa uye kugadzirwa kwayo kunoshanda zvakanaka pasina kukanganiswa.​