Chii chinoita kuti chimiro che petroleum coke (chakaita setsono, chinotapira, uye chakaita sepellet) chive nesimba pahuwandu hwe calcination shrinkage rate uye true density?

1. Needle Coke: Muenzaniso Wakajairika weKuderera Kwesimba uye Kuwanda Kwechokwadi Kwesimba

• Hunhu hweMaumbirwo: Needle coke ine chimiro chakareba kana kuti chakarebesa chine maburi marefu akatenderera akarongwa nenzira yakarongeka. Chimiro ichi chinoratidza kugona kukuru kwekudzikamisa masero panguva yekukasira.
• Kuderera kweCalcination:
  • Needle coke ine mwero wakaderera wekudonha, inowanzova pakati pe10% kusvika 20%. Maumbirwo ayo e fibrous anosvika pakudonha kuburikidza nekugadziriswa kwemamorekuru uye kuvharwa kwemaburi pasi pekupisa kwakanyanya, nepo kurongeka kwemaburi kwakarongeka kunoderedza nzvimbo yekudonha kusina kurongeka, nokudaro zvichideredza mwero wekudonha kwese.
  • Semuenzaniso, pa calcination ye 1300°C, shrinkage ye needle coke inogona kunge iri hafu ye sponge coke, nekuda kwekugona kwayo kuparadzira kushushikana kwekupisa zvakaenzana.
• Kuwanda Kwechokwadi:
  • Needle coke ine density yakakura, inowanzo svika 2.10–2.15 g/cm³. Izvi zvinoratidza mwero wayo wepamusoro wegraphitization uye chimiro chayo chakasimba chekristalline, chakabatana zvakanyanya nekurongeka kwezvikamu zvekabhoni muchimiro chayo chefiber.
  • Ongororo dzinoratidza kuti huwandu hwechokwadi hwe needle coke hwakakwira ne5%–10% kupfuura hwe sponge coke, nekuda kwekusakwana kwechimiro uye kusimba kwe carbon layer.

2. Sponge Coke: Muenzaniso Wakajairika weKuderera Kwakanyanya uye Kuwanda Kwechokwadi Kwakaderera

• Hunhu hweMaumbirwo: Sponge coke ine maburi akaita sesponji ine maburi asina kukura zvakanaka uye akapararira, madziro matete, uye kuputsika.
• Kuderera kweCalcination:
  • Sponge coke ine mwero wekudonha kwakanyanya, kazhinji kubva pa30% kusvika 50%. Maumbirwo ayo ane maburi asina kurongeka anowanzo donha maburi panguva yekuchekwa kwesimbi nekuda kwekubuda kwesimba uye kupisa kwakanyanya, zvichikonzera kudzikira kukuru.
  • Semuenzaniso, pa 1200°C calcination, vhoriyamu ye sponge coke inogona kudarika 40%, yakakwira zvikuru kupfuura ye needle coke.
• Kuwanda Kwechokwadi:
  • Sponge coke ine density yakaderera, kazhinji iri pakati pe1.90 ne2.05 g/cm³. Izvi zvinokonzerwa nehuwandu hwakawanda hwemaburi akasara uye kurongeka kwezvikamu zvekabhoni muchimiro chayo, zvichikonzera zvikanganiso zvakawanda zvekristaro.
  • Zvichienzaniswa ne needle coke, huwandu hwechokwadi hwe sponge coke hunogona kunge hwakaderera ne10%–15%, nekuda kwekusakwana kwe density.

3. Shot Coke: Nzvimbo yepakati ine kuderera kwepakati uye density chaiyo

• Hunhu hweMaumbirwo: Shot coke inoita kunge denderedzwa kana kuti sepellet, ine pamusoro pakaoma uye maburi mashoma, zvichiratidza chimiro chiri pakati peneedle coke nesponge coke.
• Kuderera kweCalcination:
  • Coke yakapfurwa inowanzova nekuderera kwesimba kubva pa20% kusvika pa30%. Maumbirwo ayo akatenderera anodzikira nekuda kwekumanikidzwa kwenzvimbo panguva yekunyungudika kwesimbi, asi kudzika kwemukati kunoderedza kukwirira kwesimba.
  • Semuenzaniso, pa calcination ye 1250°C, shot coke inogona kuderera ne 25%, ichidonha pakati pe needle coke ne sponge coke.
• Kuwanda Kwechokwadi:
  • Coke yakapfurwa inowanzova nehuwandu hwechokwadi huri pakati pe2.00 ne2.10 g/cm³. Kuwanda kwayo kwakakura kupfuura sponge coke asi kwakaderera pane needle coke, zvichikonzera huwandu hwechokwadi hwepakati.
  • Tsvagiridzo inoratidza kuti huwandu hwechokwadi hwe shot coke hwakakwira ne5% kupfuura hwe sponge coke asi hwakaderera ne3%–5% kupfuura hwe needle coke.

Kuongororwa Kwakakwana kweUkama hweMaumbirwo neZvivakwa

• Maitiro ekuderera kwesimba:
  • Maumbirwo akarongwa e needle coke anoderedza nzira dzekupwanya dzisina kurongeka, zvichideredza mwero wayo wekupwanya; maumbirwo asina kurongeka e sponge coke anotungamira mukupwanya kwakanyanya nekuda kwekudonha kwemaburi; maumbirwo akatenderera e shot coke anoita kuti pave nekupwanya kwepakati kuburikidza nekumanikidzwa kwenzvimbo.
• Maitiro Echokwadi Ekuwedzera Huremu:
  • Kuwanda kwechokwadi kwakabatana zvakananga nekuwanda kwechimiro chekristaro. Kurongeka kwechikamu chekabhoni chakarongwa uye kuderera kwekuwanda kwe needle coke zvinoguma nekuwanda kwechokwadi; chimiro chisina kurongeka uye maburi akasara e sponge coke anoderedza kuwanda kwechokwadi; shot coke inoratidza hunhu hwepakati.
• Mazano ekugadzirisa maitiro:
  • Pakushandisa kunoda kuderera kwesimba uye density yechokwadi (semuenzaniso, ma electrodes ane simba guru re graphite), needle coke ndiyo inonyanya kufarirwa;
  • Kune mashandisirwo anodhura zvishoma uye ane zvinodiwa zvishoma pakushanda (semuenzaniso, mafuta), sponge coke kana shot coke zvinogona kunge zvakakodzera;
  • Kugadzirisa tembiricha ye calcination (semuenzaniso, pamusoro pe 1300°C) uye mwero wekupisa (semuenzaniso, pasi pe 50°C/min) kunogona kuwedzera huwandu hwechokwadi uye kuderera kwe needle coke.