Kuongorora kutsva kweiyo kupisa kunyura musimboti wesilicon carbide graphite crucible

1. Zvinhu zvinhu uye chimiro

silicon carbide graphite crucible inonatswa kubva kuzvinhu zvakaita se graphite uye silicon carbide kuburikidza nemaitiro akaomarara, achibatanidza hunhu hwavo hwakanakisa. Izvo zvakakosha zve graphite zvinosanganisira:

 

Magetsi neanopisa conductivity: Graphite ine yakanaka magetsi uye yekupisa conductivity, ichiibvumira kukurumidza kutamisa kupisa uye kuderedza kurasikirwa kwesimba munzvimbo dzakanyanya tembiricha.

Kemikari Kugadzikana: Graphite inoramba yakagadzikana uye inoramba maitiro emakemikari munzvimbo dzakawanda dzine acidic uye alkaline.

Kudzivirira kwekushisa kwepamusoro: Graphite inogona kuchengetedza kutendeseka kwechimiro kwenguva yakareba munzvimbo dzekushisa kwepamusoro pasina kuchinja kukuru nekuda kwekuwedzera kwekupisa kana kuderera.

Izvo zvakakosha zvesilicon carbide zvinosanganisira:

 

Mechanical simba: Silicon carbide ine yakanyanya kuoma uye simba remuchina, uye inoshingirira kumakanika kupfeka uye kukanganisa.

Corrosion resistance: Inotaridza kusaita ngura kwakanyanya mukupisa kwakanyanya uye mhepo inoparadza.

Thermal kugadzikana: Silicon carbide inogona kuchengetedza yakagadzikana makemikari uye emuviri zvimiro munzvimbo dzekushisa kwepamusoro.

Iko kusanganiswa kwezvinhu zviviri izvi kunogadzirasilicon carbide graphite crucibles, iyo ine yakanyanya kupisa kupisa, yakanakisa yekupisa conductivity uye yakanaka kugadzikana kwekemikari, zvichiita kuti ive yakanaka kune yakakwira tembiricha yekushandisa.

 

2. Chemical reaction uye endothermic mechanism

silicon carbide graphite crucible inopinda mutsara wemakemikari maitiro munzvimbo yakakwirira yekushisa, iyo isingangoratidzi kushanda kwezvinhu zvinoputika, asiwo inokosha yekushanda kwayo kwekupisa kupisa. Maitiro makuru emakemikari anosanganisira:

 

Redox reaction: Iyo simbi oxide inopindirana neinodzikisa (senge kabhoni) mucrucible, ichiburitsa huwandu hukuru hwekupisa. Semuenzaniso, iron oxide inopindirana nekabhoni kuumba iron uye carbon dioxide:

 

Fe2O3 + 3C→2Fe + 3CO

Kupisa kunoburitswa nekuita uku kunotorwa necrucible, kukwidza tembiricha yayo yese.

 

Pyrolysis reaction: Pakupisa kwakanyanya, zvimwe zvinhu zvinosangana nekuora zvinogadzira mamorekuru madiki uye kuburitsa kupisa. Semuenzaniso, calcium carbonate inoora pakupisa kwakanyanya kuti ibudise calcium oxide uye carbon dioxide:

 

CaCO3→CaO + CO2

Iyi pyrolysis reaction zvakare inoburitsa kupisa, iyo inobatwa neiyo crucible.

 

Steam reaction: Mupfuti wemvura unopindirana nekabhoni patembiricha yakanyanya kuburitsa hydrogen necarbon monoxide:

 

H2O + C→H2 + CO

Kupisa kunoburitswa nekuita uku kunoshandiswawo necrucible.

 

Kupisa kunokonzerwa nemakemikari aya maitiro inzira inokosha yesilicon carbide graphite crucible kutora kupisa, kuchibvumira kunyatsotora uye kuendesa simba rekupisa panguva yekupisa.

 

tatu. Kuongorora kwakadzama kwemusimboti wekushanda

Nheyo yekushanda yesilicon carbide graphite crucible haisi kungovimba chete nemamiriro emuviri ezvinyorwa, asi zvakare inotsamira zvakanyanya pakushandiswa kunobudirira kwesimba rekupisa nekuita kwemakemikari. Iyo chaiyo process ndeiyi inotevera:

 

Heating crucible: Iyo yekunze inopisa sosi inopisa iyo crucible, uye iyo graphite nesilicon carbide zvinhu mukati inokurumidza kutora kupisa uye inosvika pakupisa kwakanyanya.

 

Chemical reaction endothermic: Pakupisa kwakanyanya, maitiro emakemikari (akadai seredox reactions, pyrolysis reactions, steam reactions, etc.) anoitika mukati mecrucible, achiburitsa huwandu hukuru hwesimba rekupisa, iro rinobatwa neiyo crucible material.

 

Thermal conductivity: Nekuda kweiyo yakanakisa yekupisa conductivity yegraphite, kupisa mucrucible kunokurumidza kuitiswa kuzvinhu zviri mucrucible, zvichiita kuti kupisa kwayo kukwire nekukurumidza.

 

Kuenderera mberi nekupisa: Sezvo kemikari inoramba ichienderera uye kupisa kwekunze kuchienderera mberi, crucible inogona kuchengetedza tembiricha yakakwira uye inopa kuyerera kwakadzikama kwesimba rekupisa kune zvigadzirwa zviri mucrucible.

 

Iyi inobudirira kupisa conduction uye kupisa simba rekushandisa mashandisirwo inovimbisa kushanda kwepamusoro kwesilicon carbide graphite crucible pasi pekushisa kwakanyanya. Iyi nzira haingonatsiridza kupisa kweiyo crucible, asi zvakare inoderedza kurasikirwa kwesimba, ichiita kuti iite zvakanyanya mukugadzirwa kwemaindasitiri.

 

Four. Zvitsva zvekushandisa uye optimization nzira

Kuita kwepamusoro kwesilicon carbide graphite crucible mumashandisirwo anoshanda anonyanya kuve mukushandiswa kwayo kwakanaka kwesimba rekupisa uye kugadzikana kwezvinhu. Aya anotevera mamwe ekuvandudza maapplication uye remangwana optimization mirayiridzo:

 

Kunyungudutsa kwesimbi kwepamusoro-tembiricha: Mukuita kwekunyungudutsa kwesimbi kwepamusoro-tembiricha,silicon carbide graphite crucible inogona zvinobudirira kuvandudza smelting kumhanya uye kunaka. Semuenzaniso, mukunyungudutswa kwesimbi yakanyungudutswa, mhangura, aruminiyamu nedzimwe simbi, crucible's high thermal conductivity uye corrosion resistance inogonesa kushingirira kukanganiswa kwesimbi yakanyungudutswa yepamusoro-soro, kuve nechokwadi kugadzikana uye kuchengetedzeka kwekunyungudika.

 

Yepamusoro-tembiricha kemikari reaction mudziyo:silicon carbide graphite crucible inogona kushandiswa sechigadziko chakanakira chepamusoro-tembiricha kemikari maitiro. Semuyenzaniso, muindasitiri yemakemikari, kumwe kudziya kwepamusoro-soro kunoda midziyo yakatsiga uye isingadzivirirwe nekuora, uye hunhu hwesilicon carbide graphite crucibles zvizere kuita zvinodiwa izvi.

 

Kuvandudzwa kwezvinhu zvitsva: Mukutsvaga nekuvandudzwa kwezvinhu zvitsva,silicon carbide graphite crucible inogona kushandiswa sechishandiso chakakosha chepamusoro-tembiricha kugadzirisa uye synthesis. Kushanda kwayo kwakagadzikana uye kushanda kwekushisa kwekushisa kunopa nzvimbo yakanaka yekuedza uye kukurudzira kugadzirwa kwezvinhu zvitsva.

 

Kuchengetedza-simba uye kuburitsa-kuderedza tekinoroji: Nekugadzirisa mamiriro emakemikari ekuita kwesilicon carbide graphite crucible, kushanda kwayo kwekushisa kunogona kuvandudzwa uye kushandiswa kwesimba kuderedzwa. Semuenzaniso, kuiswa kwezvigadziri mu crucible inodzidzwa kuvandudza kushanda kweiyo redox reaction, nokudaro kuderedza kupisa nguva uye kushandiswa kwesimba.

 

Kusanganiswa kwezvinhu uye kugadziridzwa: Kusanganiswa nezvimwe zvinhu zvepamusoro-soro, zvakadai sekuwedzera ceramic fibers kana nanomaterials, zvinogona kuwedzera kupisa kupisa uye simba remuchina.silicon carbide graphite crucibles. Uye zvakare, kuburikidza nekugadzirisa maitiro senge epamusoro coating kurapwa, iyo corrosion resistance uye thermal conductivity performance yecrucible inogona kuvandudzwa.

 

5. Mhedziso uye tarisiro yeramangwana

Endothermic musimboti wesilicon carbide graphite crucible ndiko kushandiswa kwakanaka kwesimba rekupisa kunobva pane zvayo zvinhu uye maitiro emakemikari. Kunzwisisa nekugadzirisa misimboti iyi kwakakosha zvikuru mukuvandudza kugadzirwa kwemaindasitiri nekutsvagisa zvinhu. Mune ramangwana, nekuenderera mberi kwekufambira mberi kwehunyanzvi uye nekuenderera mberi kwekuvandudza kwezvinhu zvitsva,silicon carbide graphite crucibles inotarisirwa kuita basa rakakosha mune dzimwe nzvimbo dzekupisa kwepamusoro.

 

Kuburikidza nekuenderera mberi hunyanzvi uye optimization,silicon carbide graphite crucible icharamba ichivandudza mashandiro ayo uye kufambisa kuvandudzwa kwemaindasitiri ane hukama. Mukunyunguduka kwesimbi kunyungudutsa, kupisa-tembiricha kemikari kuita, uye kuvandudzwa kwezvinhu zvitsva,silicon carbide graphite crucible chichava chishandiso chakakosha, kubatsira indasitiri yemazuva ano netsvagiridzo yesainzi kusvika pakakwirira.