Nhau

Nhanganyaya

Mumaindasitiri ekupisa kwepamusoro-kubva pakugadzira simbi kusvika pakugadzira magirazi - refractory zvinhu ndiwo musimboti wekushanda kwakachengeteka uye kwakanaka. Pakati peizvi,mullite zvidhinhamira pachena nekuda kwekudzikama kwavo kwekupisa, kusagadzikana kwecorrosion, uye simba remuchina. Kunzwisisa kupatsanurwa kwavo uye mashandisirwo kwakakosha kune mabhizinesi ari kutsvaga kukwiridzira hupenyu hwemidziyo uye kuderedza mari yekushandisa. Ichi chinyorwa chinoputsa mhando dzakakosha dzemullite zvidhinha uye mashandisirwo azvo epasirese, zvichikubatsira kuita sarudzo dzine ruzivo nezvezvido zvako zveindasitiri.

Kurongeka kweMullite Bricks

Mullite zvidhinha zvakakamurwa zvichibva pamagadzirirwo ekugadzira uye akawedzera zvikamu, chimwe nechimwe chakagadzirirwa kune chaiwo maindasitiri anodikanwa.

1. Sintered Mullite Bricks

Yakagadzirwa nekusanganisa yakakwirira-kuchena alumina uye silica, kuumba musanganiswa, nekuipisa patembiricha inopfuura 1600 ° C, sintered mullite zvidhinha inozvirumbidza ne dense chimiro uye yakaderera porosity (kazhinji iri pasi pe15%). Hunhu uhwu hunovapa kupfeka kwakanakisa kusamira uye kupisa kwekuvhunduka-yakanakira nharaunda dzinogara dzichichinja tembiricha. Zvinowanzo shandiswa zvinosanganisira maraning e ceramic kilns, blast furnace inopisa blast stoves, uye boiler conmbustion chamber.

2. Fused-cast Mullite Bricks

Inogadzirwa nekunyungudusa mbishi zvinhu (alumina, silica) mune yemagetsi arc furnace (inopfuura 2000 ° C) uye ichikanda musanganiswa wakanyungudutswa mu molds, fused-cast mullite zvidhinha zvine ultra-low tsvina yemazinga uye yakakwirira crystalline kuchena. Kuramba kwavo kwepamusoro kukukurwa kwekemikari (semuenzaniso, kubva kugirazi rakanyungudutswa kana slags) kunoita kuti ive sarudzo yepamusoro yezvigadziriso zvegirazi remoto, mabhati egirazi anoyangarara, uye zvimwe midziyo yakafumurwa kune hukasha yakanyungudutswa.

3. Zvidhinha zvisinganzwisisiki Mullite

Yakagadzirwa nekuwedzera pore-forming agents (semuenzaniso, sawdust, graphite) panguva yekugadzira, lightweight mullite zvidhinha zvine porosity ye40-60% uye yakaderera density pane sintered kana fused-cast mhando. Kubatsira kwavo kwakakosha ndiko kuderera kwekushisa kwekushisa (0.4-1.2 W / (m·K)), iyo inoderedza kurasikirwa kwekupisa. Iwo anoshandiswa zvakanyanya sematanho ekudzivirira mumavira, mavira, uye midziyo yekurapa kupisa, uko huremu uye kugona kwesimba kuri pamberi.

4. Zircon Mullite Zvidhinha

Nekubatanidza zircon (ZrSiO₄) mumusanganiswa wezvinhu zvakasvibirira, zircon mullite zvidhinha zvinowedzera kuwedzera kwekushisa kwepamusoro-zvinogona kumira kutonhora kusvika ku1750 ° C uye kudzivisa kukukurwa kubva kune acidic slags. Izvi zvinoita kuti dzive dzakakodzera nzvimbo dzakaoma senge dzisina-ferrous simbi dzekunyungudutsa (semuenzaniso, masero ealuminium ekudzikisa) uye simende inotenderera kiln yekupisa nzvimbo.

Zvishandiso zveMullite Bricks

Mullite zvidhinha 'kusiyana-siyana kunoita kuti zvikoshese kune akawanda maindasitiri ekupisa kwepamusoro.

1. Simbi Indasitiri

Kugadzirwa kwesimbi kunosanganisira kutonhora kwakanyanya (kusvika 1800 ° C) uye slags anoparadza. Sintered mullite zvidhinha mutsara unopisa blast stoves, uko kushivirira kwavo kwekupisa kunodzivirira kutsemuka kubva nekukurumidza kupisa / kutonhora. Mafused-cast akasiyana anochengetedza ladles uye tundishes, kuderedza kukukurwa kweslag uye kuwedzera hupenyu hwemidziyo ne20-30% zvichienzaniswa nedzechinyakare refractories.

2. Simende Indasitiri

Cement rotary kilns inoshanda pa1450-1600 ° C, ine alkaline slags inoisa njodzi huru yekukukurwa. Zircon mullite zvidhinha zvinomisa nzvimbo yekupisa yemoto, kuramba alkali kurwiswa uye kuchengetedza chimiro chekuvimbika. Zvidhinha zvisingaremi mullite zvakare zvinoshanda sematanho ekudzivirira, kucheka kushandiswa kwesimba ne10-15%.

3. Indasitiri yegirazi

Girazi rakanyungudutswa (1500-1600 ° C) rinoparadza zvakanyanya, zvichiita kuti zvidhinha zvakasanganiswa-zvakakanda mullite zvakakosha kune magirazi evira regenerator uye matangi linings. Vanodzivirira kusvibiswa kwegirazi uye vanowedzera nguva yekumhanya yevira kusvika kumakore 5-8, kubva pamakore 3-5 nezvimwe zvinhu.

4. Mamwe Maindasitiri

Musimbi isina-ferrous metal smelting (aluminium, mhangura), zircon mullite zvidhinha zvinopikisa simbi yakanyungudutswa uye slag erosion. Mune petrochemicals, sintered mullite zvidhinha mutsara unopwanya mavira nekuda kwekugadzikana kwavo kwekupisa. MuCeramics, zvidhinha zvisingaremi zvemullite zvinomisa kilns, kuderedza kushandiswa kwesimba

Mhedziso

Mullite zvidhinha `marudzi akasiyana-siyana, akafukidzwa-akakanda, akareruka, uye zircon - anosangana nezvinodiwa zvakasiyana zvemaindasitiri ekupisa kwepamusoro. Kubva pakuwedzera kugona kwechoto chesimbi kusvika pakuwedzera hupenyu hwevira regirazi, vanounza mabhenefiti anobatika: hurefu hwehupenyu hwemidziyo, mutengo wakaderera wesimba, uye kuderedzwa nguva. Sezvo maindasitiri achitsvaga kugadzirwa kwepamusoro uye kusimba, mullite zvidhinha zvinoramba zviri mhinduro yakakosha. Sarudza mhando yakakodzera yechishandiso chako, uye vhura kugona kwavo kuzere.