Izvo zvinodikanwa zvakajairika zvezvinhu zvinoramba zvemagetsi arc furnaces ndezvi:
(1) The refractoriness inofanira kuva yakakwirira. Iyo tembiricha yearc inodarika 4000 ° C, uye tembiricha yekugadzira simbi i1500 ~ 1750 ° C, dzimwe nguva yakakwira se2000 ° C, saka zvinhu zvinoramba zvichidikanwa kuti zvive nepamusoro refractoriness.
(2) Tembiricha yekunyorovesa pasi pemutoro inofanira kunge yakakwira. Choto chemagetsi chinoshanda pasi petembiricha yepamusoro yekuremerwa mamiriro, uye mutumbi wechoto unofanirwa kutsungirira kukukurwa kwesimbi yakanyungudutswa, saka iyo refractory inodiwa kuti ive neyakakura yekunyorovesa tembiricha.
(3) Simba rekumanikidza rinofanira kunge rakakwirira. Iyo yemagetsi mbiru yevira inokanganiswa nekukanganisa kwechaji panguva yekuchaja, iyo static kudzvanywa kwesimbi yakanyungudutswa panguva yekunyungudutswa, kukukurwa kwesimbi kuyerera panguva yekubata, uye mechaniki vibration panguva yekushanda. Naizvozvo, iyo refractory zvinhu inodiwa kuti ive yakakwira yekumanikidza simba.
(4) The thermal conductivity inofanira kuva duku. Kuti uderedze kurasikirwa kwekupisa kwechoto chemagetsi uye kuderedza kushandiswa kwesimba, iyo refractory zvinhu inodiwa kuti ive nehurombo hwekupisa conductivity, kureva kuti, thermal conductivity coefficient inofanira kuva duku.
(5) Kugadzikana kwekupisa kunofanira kunge kwakanaka. Mukati maminetsi mashoma kubva pakubata kusvika pakuchaja muchoto chemagetsi kugadzira simbi, tembiricha inodonha zvakanyanya kubva kutenderedza 1600 ° C kusvika pasi pe900 ° C, saka zvinhu zvinoramba zvichidikanwa kuti zvive nekudzikama kwekupisa.
(6) Kuramba kwakasimba kwekuora. Munguva yekugadzira simbi, slag, gasi rechoto uye simbi yakanyungudutswa zvese zvine simba rekukukurwa kwemakemikari pamidziyo inodzivirira, saka zvinhu zvinoramba zvichidikanwa kuti zvive nekudzivirira kwakanaka kwekuora.
Kusarudzwa kwezvinhu zvinoramba kumadziro emadziro
MgO-C zvidhinha zvinowanzoshandiswa pakuvaka madziro emadziro emagetsi emagetsi pasina masvingo ekutonhora kwemvura. Nzvimbo dzinopisa uye mitsara ye slag ine yakanyanya kuomarara mamiriro ebasa. Izvo hazvisi chete zvakasvibiswa zvakanyanya uye zvakanyungudutswa nesimbi yakanyungudutswa uye slag, pamwe nekunyanya kukanganiswa nemagetsi kana zvimedu zvinowedzerwa, asi zvakare zviri pasi pekupisa kwemwaranzi kubva kuarc. Naizvozvo, zvikamu izvi zvakavakwa neMgO-C zvidhinha zvine mashandiro akanaka.
Kune madziro emadziro emagetsi emagetsi ane masvingo akanyoroveswa nemvura, nekuda kwekushandisa tekinoroji yemvura inotonhorera, mutoro wekupisa unowedzera uye mamiriro ekushandisa akanyanya kuomarara. Nokudaro, zvidhinha zveMgO-C zvine kumira zvakanaka kwe-slag, kugadzikana kwekushisa kwekushisa uye high thermal conductivity inofanira kusarudzwa. Kabhoni yavo yemukati ndeye 10% ~ 20%.
Refractory zvinhu zveparutivi madziro e-ultra-high simba emagetsi emagetsi
Madziro epadivi emagetsi emagetsi emagetsi ekupedzisira-akakwira (UHP furnaces) anonyanya kuvakwa neMgO-C zvidhinha, uye nzvimbo dzinopisa uye nzvimbo dzeslag dzakavakwa neMgO-C zvidhinha zvine mashandiro akanaka (senge yakazara kabhoni matrix MgO-C. zvidhinha). Zvinonyanya kunatsiridza hupenyu hwayo hwesevhisi.
Kunyange zvazvo rusvingo rwevira rwevira rwakaderedzwa nekuda kwekuvandudzwa kwemagetsi emagetsi ekushanda nzira, zvichiri kuoma kune refractory zvinhu kuwedzera hupenyu hwebasa renzvimbo dzinopisa kana uchishanda pasi peUHP choto chekunyungudutsa mamiriro. Naizvozvo, tekinoroji yekutonhora kwemvura yakagadziridzwa uye inoshandiswa. Pamavira emagetsi anoshandisa EBT tapping, nzvimbo inotonhorera yemvura inosvika 70%, nokudaro kuderedza zvakanyanya kushandiswa kwezvinhu zvinoramba. Tekinoroji yemazuva ano yekutonhodza mvura inoda MgO-C zvidhinha ine yakanaka yekupisa conductivity. Asphalt, resin-bonded magnesia zvidhinha uye MgO-C zvidhinha (carbon content 5% -25%) inoshandiswa kuvaka madziro emadziro echoto chemagetsi. Mumamiriro ezvinhu akaoma oxidation, antioxidants inowedzerwa.
Kunzvimbo dzehotspot dzakanyanya kukuvadzwa zvakanyanya nekuita redox, zvidhinha zveMgO-C zvine hombe yecrystalline yakasanganiswa magnesite seyakagadzirwa, kabhoni inodarika makumi maviri muzana, uye yakazara kabhoni matrix inoshandiswa pakuvaka.
Ikozvino kuvandudzwa kweMgO-C zvidhinha zveUHP electric furnaces ndeye kushandisa-yepamusoro-tembiricha kupfura uyezve impregnation neasphalt kugadzira izvo zvinonzi zvakapfurwa asphalt-impregnated MgO-C zvidhinha. Sezvinogona kuonekwa kubva kuTable 2, zvichienzaniswa nezvidhinha zvisina kuvharwa, iyo yakasara kabhoni yemukati yeMgO-C yezvidhinha yakadzingwa mushure measphalt impregnation uye recarbonization inowedzera neinenge 1%, iyo porosity inoderera ne1%, uye yakakwirira-tembiricha flexural simba nekumanikidza. resistance are Iro simba rakavandudzwa zvakanyanya, saka rine kusimba kwakanyanya.
Magnesium refractory zvinhu zvemagetsi echoto madziro madziro
Magetsi echoto linings akakamurwa kuva alkaline uye acidic. Iyo yekutanga inoshandisa alkaline refractory zvinhu (senge magnesia uye MgO-CaO refractory zvinhu) sechoto chemba, nepo chekupedzisira chinoshandisa silica zvidhinha, jecha requartz, dhaka jena, nezvimwewo kuvaka chigadziko chevira.
Ongorora: Pamidziyo yekubikira muchoto, mavira emagetsi ealkaline anoshandisa alkaline refractory zvinhu, uye mavira emagetsi ane acidic anoshandisa acidic refractory zvinhu.
Nguva yekutumira: Oct-12-2023
