Tus nqi ntawm Fesi yog dab tsi? Dab tsi yog thawj siv ferrosilicon?

ferrosilicon siv:​Ferrosilicon tau siv dav hauv metallurgy thiab kev lag luam. Cov ntawv thov tseem ceeb suav nrog kev ua yeeb yam ua deoxidizer thiab cov neeg sawv cev ntawm cov hlau hauv cov hlau ua kom muaj zog thiab cua sov ua kom tau. Nws tseem siv rau hauv kev tsim cov khoom silicon (rau cov transformers), magnesium ferrosilicon alloys (piv txwv li cov khoom muag ntshiab si los yog lwm yam hlau). Ib qho ntxiv, nws ua haujlwm ua ib feem ntawm vuam hluav taws xob thiab siab- kub refractory.

ferrosilicon hmoov:​Ferrosilicon hmoov yog daim ntawv nplua ntawm ferrosilicon alloy, feem ntau suav nrog hlau thiab silicon (nrog silicon cov ntsiab lus xws li los ntawm ~ 15% txog 95%). Nws qhov me me me me ua rau nws haum rau kev siv tshwj xeeb, los tsim cov khaubncaws kua mis), kom muaj cov khaubncaws sab nraud povtseg), thiab ua cov khoom siv tshuaj tiv thaiv kab xeb (txhawm rau txhim kho pwm permeability). Nws tseem siv rau hauv pyrotechnics thiab raws li tus neeg sawv cev txo cov tshuaj lom neeg.

Ferrosilicon Cov Qauv:​Ferrosilicon tsis yog ib qho ntshiab sib txuas tab sis ib qho alloy feem ntau tsim ntawm cov hlau (FE) thiab silicon (si). Nws muaj pes tsawg leeg sib txawv raws li daim ntawv thov raws li daim ntawv thov muaj 45% SI, 65% SI, 75% SIRICON qib (txog li 90% SI). Piv txwv li, "Fesi75" txhais tau ferrosilicon nrog kwv yees li 75% silicon los ntawm qhov hnyav. Cov neeg tsis txaus ntseeg me (piv txwv, cov pa roj carbon, txhuas, calcium) kuj tseem tuaj yeem yog nyob ntawm cov txheej txheem ntau lawm.

Cov txheej txheem ntau lawm:​Ferrosilicon yog tsim los ntawm kev txo qis carbothermal txo nyob rau hauv ib lub cub hluav taws arc. Cov txheej txheem cuam tshuam nrog kev them nqi hluav taws xob ntawm silica (sio₂, los ntawm quarm), hlau {1} Cais (lossis cov pa roj ntsha (lossis cov kiav txhab) kom txias dua li 1,800 degree. Cov pa roj carbon reacts nrog silica kom txo cov silicon, uas sib xyaw nrog cov hlau los ua cov ferrosilicon. Lub Mollot Alloy yog tom qab ntawd Tapped los ntawm lub cub tawg, solidified, thiab crushed lossis av mus rau qhov xav tau qhov ntau thiab tsawg, granular, lossis hmoov).

ferrosilicon hs code:​Qhov kev sib haum xeeb (HS) code rau ferrosilicon nyob ntawm nws cov lus sib dhos thiab daim ntawv. Nyob rau hauv the International HS nomenclature, ferrosilicon feem ntau tau cais nyob rau hauv​7202.21​("Ferro - silicon"). Txawm li cas los xij, cov lej tshwj xeeb yuav txawv ntawm lub teb chaws. Piv txwv li:

• Hauv Asmeskas cov hts, nws yuav poob qis dua 7202.0000.

•Grades with >50% silicon feem ntau siv 7202.21, thaum nram qab cov ntsiab lus silicon (piv txwv li 15-50%) yuav siv 7202.29. Nco ntsoov txheeb xyuas HS Codes rau cov kev faib tawm cov txheej txheem, raws li lawv suav nrog cov qauv ntxiv (piv txwv li cov me me lossis hom loj).