Dab tsi yog cov txheej txheem ntau lawm ntawm nickel sulphate?

Nickel sulfate nrog nce nyob rau hauv daim ntawv thov ntawm cov ntaub ntawv ternary, qhov kev thov rau npib tsib xee sulfate kuj maj mam nce, tooj liab smelters yuav npaj nickel sulfate, Kang Jinghui me me tham nrog koj txog nickel sulfate ntau lawm txheej txheem dab tsi?

Nyob rau hauv tus txheej txheem ntawm tooj liab electrolytic refining, npib tsib xee yog feem ntau sau nyob rau hauv daim ntawv ntawm ions thiab enriched nyob rau hauv lub electrolyte, npib tsib xee yog ib qho ntawm cov impurities tseem ceeb nyob rau hauv lub tooj liab anode phaj, nyob rau hauv tus txheej txheem ntawm tooj liab electrolysis feem ntau xav kom cov concentration ntawm nickel ions. Hauv cov electrolyte tsis ntau tshaj 15g / L. Feem ntau, cov tshuaj electrolytic pov tseg yog de-coppered, thiab tom qab ntawd nickel raug tshem tawm nrog cov tshuaj de-coppered post.

Nickel Sulfate Ntau Lawm Txheej Txheem

Txoj kev tshem tawm cov nickel feem ntau suav nrog cov txheej txheem crystallisation, txoj kev rho tawm, ion pauv txoj kev, thiab lwm yam. Tam sim no, peb tsuas yog siv cov txheej txheem crystallisation los tsim cov nickel sulphate.

Tam sim no, peb tsuas yog siv cov txheej txheem crystallisation los tsim cov nickel sulphate crude, ua ntej lub ntsiab ncaj hluav taws concentration txoj kev, electrothermal concentration method thiab freezing crystallisation method, thiab tam sim no siv lub tshuab nqus tsev vacuum evaporation concentration crystallisation txoj kev thiab nqus evaporation freezing crystallisation txoj kev yog. ntau dua.

1, kev siv hluav taws xob ncaj qha vim yog cov cuab yeej siv yooj yim, kev ua haujlwm yooj yim thiab nickel ncaj yield zoo, siv thaum ntxov, tab sis vim yog cov kua qaub volatilization tshwm sim los ntawm kev ua haujlwm ib puag ncig, kev siv zog, kev siv zog thiab lwm yam, nrog rau kev txhim kho ntawm kev tiv thaiv ib puag ncig. thiab hais txog kev nyab xeeb ntawm kev ua haujlwm thiab kev nyiam huv, tsis yog los ntawm kev tshem tawm cov thev naus laus zis ntxiv lawm.

2, electrothermal concentration txoj kev vim lub siab ntawm automation, kev tiv thaiv ib puag ncig, nickel tshem tawm tus nqi thiab lwm yam zoo ntawm cov khoom siv thaum ntxov, tab sis vim yog qhov nyuaj ntawm cov cuab yeej xav tau, kev nqis peev loj thiab kev tsim cov nickel sulphate crude. tus nqi, kev siv tsawg.

3, txoj kev khov crystallisation tsis siv dav vim qhov xav tau ntawm cov cuab yeej siv ntau, thaj chaw loj, tus nqi qis ntawm nickel tshem tawm thiab lwm yam. Steam indirect cua sov concentration txoj kev (ntawm ib tug tej yam siab, kev siv ntawm cov chav indirect cua sov los ua cov tshuaj evaporation txoj kev), vim hais tias tag nrho cov smelters tsim ib tug loj npaum li cas ntawm cov dej seem, siv cov nqi qis, me me thiab nruab nrab tooj liab. smelters feem ntau nyiam.

Nrog rau kev loj hlob zuj zus ntawm kev npaj cov txheej txheem nickel sulfate ntau lawm, kev npaj nickel sulfate siv lub tshuab nqus tsev vacuum evaporation khov crystallisation txoj kev, txhawm rau txhim kho kev tsim khoom, kev sib xyaw nqus evaporation thiab khov crystallisation ntawm ob txoj kev.

1, electrothermal concentration txoj kev

Electrothermal concentration cov plaub hau txheej txheem cov txheej txheem yog yeej ib yam li cov ncaj hluav taws concentration txoj kev, nws yog siv hluav taws xob mus ncaj qha tshav kub cov concentration tov, thiab ces dej-txias crystallisation tso zis ntawm crude nickel sulphate.

Electrothermal concentration txoj kev nrog peb graphite electrodes tso rau hauv cov tshuaj uas muaj cov concentration tank, cov khoom siv fais fab tso zis ntau dua tam sim no rau electrode, los ntawm cov tshuaj nws tus kheej tsis kam ua kom sov kom cov tshuaj boils. Dej yog evaporated ntawm atmospheric siab kom concentrate cov kua. Cov roj evaporated raug xa mus rau sulfuric acid pos huab cua ntauwd los ntawm lub tshuab tso pa kom huv si thiab khiav tawm, thiab cov tshuaj concentrated yog txias los ntawm cov dej txias crystallisation tank thiab lim los ntawm lub tshuab nqus tsev kom tau cov khoom siv raw khoom nickel sulfate.

Electrothermal concentration method vim kev siv hluav taws xob hluav taws xob, rau lub zog hluav taws xob mus txog rau thaj tsam tsis zoo heev, tus nqi hluav taws xob yog siab dua, tus nqi ntawm crude nickel sulfate yog siab dua. Lub siab kub corrosive gas uas ua los ntawm electrothermal concentration yog corrosion loj heev rau cov pa purification system, ntau lawm cov khoom thiab cov nroj tsuag. Tam sim no, tsuas yog ob peb lub tuam txhab siv cov txheej txheem no.

2, Freeze crystallisation txoj kev

Lub freezing crystallisation yog ib tug ntau dua concentration ntawm npib tsib xee uas muaj tooj liab hmo kawg, thawj pre-txias, thiab ces ntws los ntawm lub freezing crystallisation tank nruam khov crystallisation, feem ntau tswj ntawm -25 ~ -10 degree . Txhua lub tank crystallisation yog tig mus tas li nrog kev siv qis qis. Crystallized crude nickel sulphate nyob rau hauv lub crystallisation tank yog lim, lim ncuav mog qab zib yog crude nickel sulphate, thiab cov filtrate yog pre-txias rau hmo kawg ntawm kev tshem tawm tooj liab. Vim tias cov npib tsib xee hauv cov kua decoperised tsis siab heev, qhov ua tau zoo ntawm kev khov thiab crystallisation tsis zoo heev. Qee cov tuam txhab lag luam yuav electrolysis system mus rau qee qhov kev xav tau, sib cuam tshuam ntawm nickel sulfate siv cryocrystallisation.

3, nqus evaporation concentration crystallisation txoj kev.

Nqus evaporation concentration crystallisation txoj kev yog siv cov kev daws teeb meem ntawm sulfuric acid concentration thiab sulfate solubility ntawm qhov sib txawv ntawm qhov kub thiab txias muaj ib qho kev sib raug zoo, uas yog, kev daws ntawm sulfate solubility yuav hloov nrog nws acidity, kub hloov; Nyob rau tib lub sij hawm, cov tshuaj nyob rau hauv txawv acidity, nyob rau hauv sib txawv pressures, nws boiling point yog txawv, thiab kuj muaj ib tug tej yam sib npaug kev sib raug zoo ntawm lawv.

Kev siv cov ncu los ntawm titanium phaj los yog cua sov coil los ua kom sov cov tshuaj tiv thaiv kettle tom qab decopperisation, thiab nqus cov tshuaj tiv thaiv kettle kom txo tau lub boiling point ntawm dej thiab ua kom lub evaporation ceev. Nqus evaporation ntau lawm ntawm crude npib tsib xee sulfate feem ntau yog cov smelter uas tsim los ntawm cov khoom seem rau siv, cov nqi ntau lawm yog tsawg.

4, Nqus evaporation concentration khov crystallisation txoj kev.

Nqus evaporation concentration khov crystallisation txoj kev yog tshem cov tooj liab tom qab cov kua ua ntej lub tshuab nqus tsev evaporation, ces pre-txias, ua raws li khov crystallisation, thiab thaum kawg lim, nqus evaporation concentration freeze crystallisation efficiency yog siab dua, tab sis vim hais tias cov txheej txheem ntev dua, tau lawm. concentrated tom qab tshem tawm cov tooj liab tom qab cov kua yuav tsum tau mus los ntawm qee qhov ntawm cov kav dej thiab cov khoom siv khov crystallisation, cov khoom siv corrosion yog qhov hnyav dua, ua rau kev saib xyuas ntawm cov nqi tsim khoom.