Muaj ob txoj hauv kev tseem ceeb ntawm kev tsim nickel niaj hnub: txoj kev tua hluav taws thiab txoj kev ntub dej. Nyob ntawm ob lub ntsiab ntawm cov nickel-muaj cov ntxhia hauv ntiaj teb (nickel-muaj sulfide ores thiab oxide ores), smelting thiab ua cov txheej txheem sib txawv. Nickel-muaj sulfide ores feem ntau yog kho los ntawm txoj kev tua hluav taws. Hlau npib tsib xee yog tau los ntawm smelting tooj liab, npib tsib xee thiab sulfur nyob rau hauv lub reverberatory rauv (hluav taws xob rauv los yog blast furnace), tshuab nickel concentrate, thiab electrolyzing nickel concentrate. Oxidized ore feem ntau yog npib tsib xee-muaj oreite ore, uas yog qib qis thiab tsim nyog rau kev kho ntub dej; Cov txheej txheem tseem ceeb yog ammonia leaching thiab sulfuric acid. Kev kho hluav taws kub ntawm oxide ore yog txoj kev ferronickel.
Txawm hais tias cov txheej txheem tom qab nickel ore kev kho mob feem ntau muab faib ua cov txheej txheem hydrometallurgical smelting thiab cov txheej txheem pyrometallurgical smelting, cov txheej txheem paub tab ntau dua rau kev smelting npib tsib xee-hlau alloys siv cov xuab zeb nickel ores thoob plaws ntiaj teb tseem muaj kev cuam tshuam los ntawm pyrometallurgical smelting. Pyrometallurgical smelting ntawm ferronickel yog tau los ntawm kev txo NiO thiab lwm yam oxides (xws li FeO) nyob rau hauv nickel oxide ore siv C (los yog Si) raws li ib tug txo tus neeg sawv cev nyob rau hauv lub kub kub. Nyob rau tib lub sijhawm, kev xaiv cov txheej txheem txo qis yog siv, tus neeg sawv cev txo qis yog siv rationally, thiab txo cov tshuaj tiv thaiv yog ua raws li kev txo qis ntawm NiO, FeO, Cr2o3, thiab SiO2. Vim qhov sib txawv ntawm cov nickel ores los ntawm cov hauv paus chiv keeb, cov tebchaw uas muaj NiO thiab ntau yam oxides kuj txawv. Yog li ntawd, thaum lub sij hawm smelting txheej txheem ntawm ferronickel, qhov tseeb cov tshuaj tiv thaiv yog ntau nyuaj. Ni thiab Fe ua los ntawm cov tshuaj tiv thaiv tuaj yeem yaj hauv ib leeg hauv qhov sib txawv los tsim cov nickel hlau. Kev txo cov tshuaj tiv thaiv ntawm NiO thiab FeO pib ntawm qhov kub qis, thiab qhov pib kub ntawm NiO yog li 200 degree qis dua li ntawm FeO. Yog li ntawd, nyob rau hauv tus txheej txheem ntawm pyrometallurgical smelting ntawm ferronickel, txawm hais tias cov nickel ore siv muaj ib tug tsawg NiO cov ntsiab lus, ntau tshaj 90% NiO raug txo, thiab thaum Ni / Fe tsawg heev, sib txawv txheej txheem yuav siv tau los ua kom cov Ni cov ntsiab lus ntawm. cov khoom mus rau qib siab dua, piv rau lwm cov khoom ferroalloy (xws li high-carbon ferrochrome, manganese-silicon alloy, thiab lwm yam.) Piv nrog rau hluav taws xob cub tawg crude nickel smelting, nws kuj nyuaj heev.
Yog tias koj xav tau cov khoom lag luam zoo Inconel lossis lwm cov khoom lag luam Inconels & cov koom tes ua lag luam mus ntev, thov hu rau peb: https://www.xuruimetal.com
