Ko kabhoni maelectrode, magraphite electrode uye ega-ekubikira maelectrode anofanira kushandiswa sei nemazvo muindastiri yearc furnace indasitiri?

Type, kuita uye kushandiswa kwe electrode

Electrode type

Carbonaceous electrodes inogona kuiswa mumakabhoni electrode, magraphite electrodes uye ega-ekubikira maelectrodes zvinoenderana nekushandisa kwavo uye maitiro ekugadzira.

Iyo kabhoni electrode inogadzirwa ne low-ash anthracite, metallurgical coke, pitch coke uye petroleum coke. Inoumbwa nehumwe chiyero uye saizi yechidimbu. Paunenge uchiwedzera, binder asphalt netara zvinosanganiswa, uye musanganiswa unomutswa zvakaenzana pakudziya kwakakodzera. Kugadzira, uye pakupedzisira zvishoma nezvishoma calcining mune roaster. Inogona kukamurwa kuita echisikigo graphite electrodes, artificial graphite electrodes, kabhoni electrodes uye yakakosha kabhoni electrodes.

Iyo graphite electrode (graphiteelectrode) inogadzirwa nepetroleum coke uye pitch coke seyakagadzirwa, uye yozoiswa muchoto chemagetsi che graphitized ine tembiricha ye2273 ~ 2773K, uye inogadzirwa kuita graphite electrode negraphitization. Iyo graphite electrode inowedzera kukamurwa kuva inotevera Rudzi.

Iyo yakajairika simba graphite electrode inobvumira kushandiswa kwemagraphite electrode ane density iripo isingasviki 17 A/cm2, uye inonyanya kushandiswa kune akajairwa magetsi emagetsi sekugadzira simbi, silicon kunatsa, uye yellowing phosphorus.

Pamusoro peiyo anti-oxidation yakavharwa graphite electrode yakavharwa neinodzivirira layer (graphite electrode antioxidant) iyo inofambisa uye inodzivirira kune yakanyanya tembiricha oxidation, iyo inoderedza kushandiswa kwemagetsi panguva yekugadzira simbi (19% ~ 50%) uye inowedzera hupenyu hwesevhisi. ye electrode (22% ~ 60%), kuderedza kushandiswa kwesimba kwe electrode.

I-high-power graphite electrode inobvumira kushandiswa kwema graphite electrode neazvino density ye18 kusvika ku25 A / cm2, iyo inonyanya kushandiswa mumagetsi emagetsi arc furnaces ekugadzira simbi.

Ultra high power graphite electrodes inobvumira kushandiswa kwema graphite electrodes ane density iripo inodarika 25 A/cm2. Inonyanya kushandiswa mu-ultra-high simba steelmaking emagetsi arc furnaces.

Self-baking electrode (selfbakingelectrode) uchishandisa anthracite, coke, uye bhitumini uye tara semidziyo, kugadzira electrode paste pane imwe tembiricha, uyezve kurodha iyo electrode paste mukesi ye electrode yakaiswa pachoto chemagetsi (sezvinoratidzwa. muFIG. muchoto vanozvinyudza uye vanobika. Electrode yakadaro inogona kushandiswa nguva dzose, uye inogona kuumbwa nekubatanidza rutivi rwakareba rwemucheto uye inogona kupiswa muhupamhi hukuru. Iyo yekuzvibikira electrode inoshandiswa zvakanyanya pakugadzira ferroalloy nekuda kwekuita kwayo kuri nyore uye mutengo wakaderera.

Mufananidzo 1 Schematic diagram ye electrode shell

1-electrode shell; 2-mbabvu chidimbu; 3-triangle rurimi

Main technical performance ye electrode

Iyo electrode zvinhu zvinofanirwa kuve neinotevera physicochemical zvimiro:

Iyo conductivity iri nani, iyo resistivity idiki, kuderedza kurasikirwa kwesimba remagetsi, kuderedza kudonha kwevoltage yemambure mapfupi, uye kuwedzera simba rinoshanda kuwedzera simba redziva rakanyungudutswa;

Kunyungudika kwakakwirira;

Iyo coefficient yekuwedzera kwekushisa idiki, kana kutonhora kuchichinja nekukurumidza, hazvisi nyore kukanganiswa, uye kushushikana kwemukati kunokonzerwa nekushanduka kwekushisa hakugone kugadzira kuputika kwakanaka kuti kuwedzere kushorwa;

Iva nesimba rakakwana remagetsi pakupisa kukuru;

Tsvina ishoma uye tsvina haisvibisi munyuwi.

Hukuru hwehunyanzvi hwekugadzira kabhoni electrode, iyo graphite electrode uye yekuzvibikira electrode inoratidzwa muTafura 1 uye Figure 2 ne3.

Tafura 1 Electrode technical performance

Fig. 2 Shanduko yeresistivity yecarbon electrode uye graphite electrode ine tembiricha

Mufananidzo 3 Thermal conductivity ye carbon uye graphite electrodes sekushanda kwekushisa

Kusarudzwa kwema electrode muindasitiri yeferroalloy

Self-baking maelectrodes anoshandiswa zvakanyanya mukunyungudutsa iron alloy, kunatsa ferrosilicon, silicon chromium alloy, manganese silicon alloy, high carbon ferromanganese, high carbon ferrochrome, medium and low carbon ferromanganese, medium and low carbon ferrochrome, silicon calcium alloy, tungsten iron Wait. . Kuzvibikira maelectrode anowanzo wedzera kugadzirwa kwealloys, mabhandi esimbi kuita kabhoni, uye kugadzira alloys esimbi nesimbi dzakachena dzine yakaderera kabhoni. Kana kabhoni ferrochrome, indasitiri silicon uye manganese simbi, kabhoni kana graphite electrodes inofanira kushandiswa.

电极的种类、性能及其用途

电极种类

碳质电极按其用途及制作工艺不同可分為碳素电极、石墨电极和自焙电极三种.

碳素电极(carbonelectrode)是以低灰分的无烟煤、冶金焦、沥青焦和石油焦為原料，按一定的比例和粒度组成.混合时加入黏结剂沥.青和焦油，在适当的温度下搅拌均匀后压制成形，最后在焙烧炉缓慢焙烧制得。可分为天然石墨电极、人造石墨电极、碳电极以及特种碳素电极四类。

石墨电极(graphiteelectrode)以石油焦和沥青焦為原料制成碳素电极，再放到温度為2273〜2773K的石墨化电阻炉中，经石墨化而制成石墨电极„石墨电极又分為以下几。

普通功率石墨电极允许使用电流密度低于17A/cm2的石墨电极，主要用于炼钢、炼硅、炼黄磷等的普通功率电炉。

抗氧化涂层石墨电极表面涂覆既能导电又耐高温氧化的保护层(石墨电极抗氧化剂)，降低炼钢时的电极消耗(19%〜50%),延长电极的使用寿命(22%〜60%),降低电极的电能消耗.

高功率石墨电极允许使用电流密度為18〜25A/cm2的石墨电极，主要用于炼钢的高功率电。

超高功率石墨电极允许使用电流密度大于25A/cm2的石墨电极。主要用于超高功率炼钢田。

自焙电极(selfbakingelectrode)用无烟煤、焦炭以及沥青和焦油为原料，在一定温度下制成电极糊，然后把电极糊装入已安装在电炉上的电极壳中(如图1所示)中依靠电流通过时所产生的焦耳热和炉内传导热，自行烧结焦化。边给结成形，且可焙烧成大直径的。自焙电极不仅工艺简单，成本也低，因