Zinc slag feem ntau yog cov khoom ntawm cov tshuaj tiv thaiv ntawm zinc thiab hlau. Nws cov ntsiab lus tseem ceeb yog ζ-theem ntawm cov hlau-zinc alloy txheej tsim tom qab kev sib xyaw ntawm zinc thiab hlau. Yog li ntawd, cov ntsiab lus hlau nyob rau hauv zinc slag feem ntau yog nyob ib ncig ntawm 3-6%, thiab cov ntsiab lus zinc nyob ib ncig ntawm 94-97%. Hauv qee cov txheej txheem kub-dip galvanizing, txhuas yog ntxiv los tiv thaiv lub lauj kaub galvanizing hauv qab. Nyob rau hauv tas li ntawd, cov zinc slag muaj 1.5-2% lead. Qee lub sij hawm, aluminium kuj tseem ntxiv los txhim kho qhov chaw tiav thiab cov yam ntxwv ntawm cov txheej txheem galvanized, ua rau qee cov ntsiab lus txhuas hauv zinc slag.
Cov hlau nyob rau hauv zinc slag feem ntau yog los ntawm cov hlau ntsev adhering rau saum npoo ntawm cov kav hlau thaum lub sij hawm pretreatment, steel kav lawv tus kheej, thiab tsim cov hlau-zinc alloy txheej tom qab dissolution ntawm lub lauj kaub galvanizing thiab galvanizing khoom los ntawm zinc kua thiab cov kev sib nrig sib diffusion ntawm hlau thiab zinc atoms. Lub crystalline ζ-theem txheej (drifting txheej) tshem tawm ntawm cov hlau substrate thiab accumulates nyob rau hauv qab ntawm lub lauj kaub galvanizing, maj mam tsim ib zinc slag txheej.
Cov tshuaj tiv thaiv thaum tsim cov zinc slag yog:
Cov tshuaj tiv thaiv tshwm sim los ntawm cov khoom siv hlau:
FeCl₂ + 8Zn → ZnCl₂ + FeZn₇
Fecl₂ + 14 Zn → zncl₂ + fezn₁₃
Cov tshuaj tiv thaiv los ntawm steel:
Fe₃c + 21 zag zn → 3fezn₁₃ + c
(Nco tseg: Qhov kev xav thib ob Fe₃c + 39 Zn cov khoom siv zoo li thawj cov tshuaj tiv thaiv nrog fe₃c thiab ntau dua ntawm zn, uas yog siv tshuaj chemically implausible. Yog li ntawd, nws tau raug rho tawm ntawm no.)
Cov khoom ntawm zinc slag:
Qhov pom melting ntawm zinc slag yog siab tshaj qhov ntawm cov ntshiab huv huv.
Qhov ceev ntawm zinc slag yog loj dua li ntawm cov ntshiab dam. According to measurements by Schulmann, the densities of zinc slag with iron contents of 6.2%, 7.0%, 9.0%, and 22% are 7.15, 7.24, 7.24, and 7.36 kg/ dm³, feem.
Cov duab crystalline ntawm zinc slag belongs rau symmetric monoclinic system thiab hexagon, nrog rau cov yam ntxwv angular.
Cov xim ntawm zinc slag yog greyish dawb nrog silvery 光泽.
Zinc slag muaj impurities xws li txhuas, txhuas, antimony, cadmium, tooj liab, thiab insoluble compounds ntawm acids.
Cov Zinc Ntsiab Lus hauv Zinc Slag yog kwv yees li 94-97%.
Cov ntsiab lus hlau hauv zinc slag yog kwv yees li 3-6%.
Zinc slag yog nkig piv rau cov zinc ntshiab thiab tsis muaj kev hloov pauv.
Qhov tseem ceeb, zinc slag yog ib qho alloy tsim los ntawm ζ-theem drifting txheej, δ₁栅状 txheej, thiab lwm yam impurities interspersed nyob rau hauv zinc.
