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Mhando uye zvinhu zvemuviri zvezvakajairwa refractories

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1, Chii chinonzi refractory?

Refractory zvinhu zvinowanzo tarisa kune inorganic isiri-simbi zvinhu zvine moto kuramba unopfuura 1580 ℃.Inosanganisira echisikigo ores uye akasiyana zvigadzirwa zvakaitwa kuburikidza nemamwe maitiro zvinoenderana nezvimwe zvinangwa zvinodiwa.Iine mamwe e-high-temperature mechanical properties uye yakanaka vhoriyamu kugadzikana.Icho chinhu chinodiwa kune marudzi ese emhando yepamusoro-tembiricha michina.Iine huwandu hwakawanda hwekushandisa.

2、 Mhando dze refractories

1. Acid refractories inowanzoreva refractories neSiO2 content yakakura kudarika 93%.Chinhu chayo chikuru ndechekuti inogona kurwisa kuputika kweasidhi slag pakupisa kwakanyanya, asi zviri nyore kuita nealkaline slag.Silika zvidhinha uye zvidhinha zvevhu zvinowanzoshandiswa seasidhi refractories.Silika zvidhinha chigadzirwa chesiliceous chine zvinopfuura 93% silicon oxide.Izvo zvigadzirwa zvinoshandiswa zvinosanganisira silica uye tsvina silica zvidhinha.Iine kupikisa kwakasimba kune acid slag erosion, high load inonyorovesa tembiricha, uye haina kuderera kana kuwedzera zvishoma mushure mekudzokorora calcination;Nekudaro, zviri nyore kunyungudutswa nealkaline slag uye ine hurombo hwekupisa kuzunguza kuramba.Silica zvidhinha inonyanya kushandiswa mucoke oveni, girazi revira, acid simbi yevira uye zvimwe zvinopisa zvishandiso.Zvidhinha zvevhu zvinotora ivhu refractory sechinhu chikuru mbishi uye chine 30% ~ 46% alumina.Iyo isina kusimba acidic refractory ine yakanaka yekushisa vibration kuramba uye corrosion kuramba kune acidic slag.Inoshandiswa zvakanyanya.

2. Alkaline refractories inowanzoreva refractories ne magnesium oxide kana magnesium oxide uye calcium oxide sezvikamu zvikuru.Aya marefractories ane yakakwirira refractoriness uye yakasimba kuramba kune alkaline slag.Semuenzaniso, magnesia zvidhinha, magnesia chrome zvidhinha, chrome magnesia zvidhinha, magnesia aluminium zvidhinha, dolomite zvidhinha, forsterite zvidhinha, etc. Inonyanya kushandiswa muvira rekugadzira alkaline simbi, isina-ferrous metal smelting furnace uye simenti.

3. Aluminium silicate refractories inoreva refractories neSiO2-Al2O3 sechinhu chikuru.Maererano neAl2O3 zvinyorwa, zvinogona kugoverwa kuva semi siliceous (Al2O3 15 ~ 30%), clayey (Al2O3 30 ~ 48%) uye yakakwirira alumina (Al2O3 inopfuura 48%).

4. Kunyunguduka nekukanda refractory kunoreva zvigadzirwa zvinoramba zvine imwe chimiro chakakandwa mushure mekunyungudutsa batch pakupisa kwakanyanya neimwe nzira.

5. Neutral refractories inoreva refractories iyo isiri nyore kuita ne acidic kana alkaline slag pakupisa kwepamusoro, zvakadai se carbon refractories uye chromium refractories.Vamwe zvakare vanoti yakakwirira alumina refractories kune iyi chikamu.

6. Special refractories zvinhu zvitsva inorganic nonmetallic zvakagadzirwa pahwaro hwechinyakare ceramics uye general refractories.

7. Amorphous refractory isanganiswa inoumbwa nerefractory aggregate, poda, binder kana zvimwe zvakasanganiswa mune imwe chikamu, iyo inogona kushandiswa zvakananga kana mushure mekugadzirira kwakakodzera kwemvura.Unshaped refractory rudzi rutsva rwerefractory isina calcination, uye kudzivirira kwayo moto hakusi pasi pe1580 ℃.

3, Ndeapi anowanzo shandiswa refractories?

Zvakajairika refractories zvinowanzo shandiswa zvinosanganisira silica zvidhinha, semi silica zvidhinha, zvidhinha zvevhu, yakakwirira alumina zvidhinha, magnesia zvidhinha, nezvimwe.

Zvinhu zvakakosha zvinowanzo shandiswa zvinosanganisira AZS zvidhinha, corundum zvidhinha, zvakananga bonded magnesium chromium zvidhinha, silicon carbide zvidhinha, silicon nitride bonded silicon carbide zvidhinha, nitride, silicide, sulfide, boride, carbide uye mamwe asiri oxide refractories;Calcium oxide, chromium oxide, alumina, magnesium oxide, beryllium oxide uye zvimwe zvinhu refractory.

Iyo inowanzo shandiswa yemafuta ekudzivirira uye zvigadziriso zvinhu zvinosanganisira diatomite zvigadzirwa, asbestos zvigadzirwa, thermal insulation board, nezvimwe.

Zvishandiso zvinogara zvichishandiswa amorphous refractory zvinosanganisira midziyo yekugadzira muchoto, zvinhu zvinodzivirira moto, zvinorasa moto, mapurasitiki asingadziki moto, madhaka asingadziviriri moto, pfuti dzisingadziviriri moto, majekiseni asingadziviriri moto, machira asingadziviriri moto, moto unopenya. -resistant castables, pfuti dope, ceramic mavharuvhu, nezvimwe.

4, Ndezvipi zvinhu zvemuviri zve refractories?

Zvimiro zvemuviri zve refractories zvinosanganisira zvimiro zvechimiro, zvinopisa zvivakwa, mechanical zvivakwa, sevhisi zvivakwa uye zvekushandisa.

Izvo zvimiro zve refractories zvinosanganisira porosity, kuwanda density, kunyura kwemvura, mhepo inopenya, pore saizi yekugovera, nezvimwe.

Izvo zvinopisa zvimiro zve refractories zvinosanganisira thermal conductivity, thermal yekuwedzera coefficient, chaiyo kupisa, kupisa simba, thermal conductivity, thermal emissivity, nezvimwe.

Iwo ma mechanic zvimiro zve refractories zvinosanganisira kumanikidza simba, kusimba simba, flexural simba, torsional simba, shear simba, simba rekuita, kupfeka kuramba, kukambaira, bond simba, elastic modulus, nezvimwe.

Basa rekuita refractories rinosanganisira kudzivirira kwemoto, kunyorovesa tembiricha, kudzoreredza mutsara shanduko, kupisa kutyisa kuramba, slag resistance, acid resistance, alkali resistance, hydration resistance, CO erosion resistance, conductivity, oxidation resistance, nezvimwe.

Iko kushanda kwezvinhu zvinoramba kunosanganisira kuwirirana, kudonha, fluidity, plastiki, kubatana, kusimba, coagulability, kuoma, nezvimwe.


Nguva yekutumira: Mar-15-2022