Lub luag haujlwm ntawm Sodium Sulfide hauv Mineral Processing

Introduction

Nyob rau hauv lub complex thiab tseem ceeb teb ntawm kev ua ntxhia, ntau yam tshuaj reagents ua lub luag haujlwm tseem ceeb hauv kev ua kom zoo rau kev sib cais thiab tshem tawm cov khoom muaj txiaj ntsig zoo. Ntawm cov no, sodium sulfide (Na₂S) sawv tawm raws li ntau yam thiab dav siv tshuaj. Nws muaj ntau yam haujlwm hauv ntau hom kev ua haujlwm ntxhia, tshwj xeeb hauv flotation cov txheej txheem, uas yog qhov tseem ceeb rau kev rov qab zoo ntawm cov zaub mov los ntawm ore.

Cov Khoom Siv Tshuaj Sodium Sulfide

Sodium sulfide yog ntsev tau los ntawm hydrogen sulfide, tsis muaj zog dibasic acid. Nyob rau hauv cov kev daws teeb meem aqueous ntawm chav tsev kub thiab ib qho atmospheric siab, ntawm ntau tshaj 30 hom molecular thiab ionic sulfur, tsuas yog rau yog thermodynamically ruaj khov: HSO₄⁻, SO₄²⁻, H₂S, HS⁻, thiab S²⁻. Lub pH ntawm lub aqueous system yog ib qho tseem ceeb tswj kev sib txawv ntawm oxidation ntawm hydrogen sulfide. Hauv qab pH 6. "molecular hydrogen sulfide" yog qhov tseem ceeb txo cov sulfur hom. Nyob rau ntawm pH 7. qhov txo cov sulfur hom nyob rau hauv cov kev daws yog sib npaug ntawm "solved hydrogen sulfide" thiab cov bisulfide hom (HS⁻), nrog HS⁻ yog hom tseem ceeb nyob rau hauv lub pH ntau ntawm 8 - 11.

Kev ua haujlwm ntawm Sodium Sulfide hauv Mineral Processing

Inhibitor ntawm Sulfide Minerals

Sodium sulfide yog ib qho zoo inhibitor rau feem ntau sulfide minerals thaum siv ntau ntau. Qhov kev txiav txim ntawm nws cov nyhuv inhibitory ntawm sulfide minerals feem ntau txo qis raws li hauv qab no: galena, sphalerite, chalcopyrite, bornite, covellite, pyrite, thiab chalcocite. Qhov tseem ceeb, vim qhov zoo tshaj plaws floatability ntawm molybdenite, sodium sulfide tsis tuaj yeem cuam tshuam nws. Cov yam ntxwv no yog siv nyob rau hauv flotation ntawm molybdenite, qhov twg Na₂S yuav siv tau los suppress lub flotation ntawm lwm yam sulfide minerals, tso cai rau cov xaiv sib cais ntawm molybdenite.

Sulfidizing Agent rau Non-ferous Hlau Oxide Ores

Cov hlau tsis muaj hlau oxide tsis tuaj yeem raug ntes ncaj qha los ntawm xanthate collectors. Txawm li cas los xij, thaum sodium sulfide ntxiv rau cov ore pulp ua ntej xanthate flotation, nws reacts nrog rau saum npoo ntawm non-ferrous hlau oxide minerals. Cov tshuaj tiv thaiv no ua rau tsim cov yeeb yaj kiab nyias ntawm sulfide cov zaub mov ntawm qhov chaw ntawm cov zaub mov oxide. Piv txwv li, thaum dawb hlau lead ore reacts nrog sodium sulfide, nws cov xim nto hloov ntawm dawb mus rau tsaus; thiab thaum malachite reacts nrog sodium sulfide, nws cov xim saum npoo hloov los ntawm ntsuab mus rau dub tsaus. Cov xim hloov no qhia txog kev ua tiav ntawm cov yeeb yaj kiab sulfide sib txawv ntawm cov pob zeb qub qub. Tom qab sulfidization, xanthate tuaj yeem ntes tau cov zaub mov no zoo, yog li txhim kho cov flotation rov qab ntawm cov hlau tsis muaj hlau oxide ore.

Desorbing Agent rau Sulfide Mineral Mixed Concentrates

Thaum siv ntau npaum li cas ntawm sodium sulfide, nws muaj peev xwm desorb lub xanthate - hom collectors adsorbed rau saum npoo ntawm cov zaub mov. Nyob rau hauv kev sib cais ntawm cov hlau lead - zinc mix concentrates los yog tooj liab - lead mix concentrates, lub ore pulp yuav xub tau concentrated. Tom qab ntawd, ntau npaum li cas ntawm sodium sulfide ntxiv rau desorb cov khoom ntawm cov pob zeb hauv av. Tom qab ntawd, lub pulp yog ntxuav, thiab dej tshiab yog ntxiv rau re - kho lub pulp rau tom ntej sib cais flotation. Cov txheej txheem no yuav pab tshem tawm qhov cuam tshuam ntawm cov khoom qub qub thiab ua kom muaj txiaj ntsig zoo sib cais ntawm cov ntxhia sib txawv hauv cov khoom sib xyaw.

Kev tshem tawm cov teeb meem ions hauv Ore Pulp

Sodium sulfide tuaj yeem hnov ​​​​mob nrog ntau cov hlau ions los ua insoluble sulfide precipitates. Nyob rau hauv ore pulp, feem ntau muaj qee cov hlau ions uas tuaj yeem cuam tshuam tsis zoo rau flotation, xws li qee cov hlau hnyav ions. Los ntawm kev ntxiv sodium sulfide, cov hlau tsis zoo no tuaj yeem raug tshem tawm ntawm ore pulp nyob rau hauv daim ntawv ntawm sulfide precipitates, yog li tsim kom muaj ib qho chaw zoo dua rau flotation thiab txhim kho tag nrho cov flotation efficiency.

Cov yam ntxwv cuam tshuam rau kev siv Sodium Sulfide hauv Mineral Processing

1. Cov Mineralology: Kev sib txawv ntawm ore mineralogy tuaj yeem muaj kev cuam tshuam loj. Piv txwv li, nyob rau hauv oxide ore sulfidization, kev sib koom ua ke ntawm cov minerals sib txawv xws li galena, sphalerite, thiab cerussite hauv cov ore tuaj yeem cuam tshuam cov txheej txheem tshuaj tiv thaiv. Ib yam li ntawd, muaj ntau yam oxide minerals xws li malachite, azurite, atacamite, thiab chrysocolla ua ke kuj cuam tshuam rau sulfidization nyhuv.

2. Sodium Sulfide - Siv Minerals: Minerals xws li pyrite, marcasite, talc, cerussite, av nplaum, slimes, alkaline ntiaj teb ntsev, gypsum, thiab chlorides yuav haus sodium sulfide. Qhov kev noj no tuaj yeem ua rau muaj qhov tsis txaus ntawm sodium sulfide muaj rau cov kev xav tau hauv cov txheej txheem flotation, yog li txo nws cov txiaj ntsig.

3. pH Tus Nqi: Thaum ntau npaum li cas ntawm sodium sulfide, pH ntawm ore pulp tuaj yeem dhau los. Qhov pH huab cua no yuav tsis tsuas yog cuam tshuam cov tshuaj lom neeg ntawm sodium sulfide nrog cov zaub mov tab sis kuj cuam tshuam rau kev ua haujlwm ntawm lwm cov reagents hauv flotation system, thaum kawg cuam tshuam rau kev sib cais thiab rov qab ntawm cov zaub mov.

4. Qhov chaw thiab tus naj npawb ntawm Sodium Sulfide Ntxiv theem: Lub ntsiab lus thiab pes tsawg zaus sodium sulfide ntxiv thaum lub sij hawm flotation txheej txheem kuj tseem ceeb heev. Qhov chaw ntxiv tsis raug lossis tus lej tsis raug ntawm cov theem ntxiv tuaj yeem ua rau muaj kev faib tsis sib xws ntawm sodium sulfide hauv cov ore pulp lossis cov tshuaj tiv thaiv tsis raws sijhawm, ob qho tib si tuaj yeem txo qhov ua haujlwm ntawm nws cov haujlwm.

5. Cov dej sib xyaw: Cov dej muaj pes tsawg leeg siv hauv cov txheej txheem flotation, tshwj xeeb tshaj yog cov ntsiab lus ntawm calcium, magnesium ions, thiab dej hardness, tuaj yeem cuam tshuam nrog sodium sulfide thiab minerals. Cov kev sib cuam tshuam no tuaj yeem txhawb lossis cuam tshuam cov kev cuam tshuam ntawm sodium sulfide, yog li cuam tshuam nws lub luag haujlwm hauv kev ua ntxhia.

xaus

Sodium sulfide plays lub luag haujlwm ntau yam thiab tseem ceeb hauv kev ua cov ntxhia, tshwj xeeb tshaj yog nyob rau hauv flotation. Nws ua haujlwm raws li inhibitor, sulfidizing tus neeg sawv cev, desorbing tus neeg sawv cev, thiab nws lub peev xwm los tshem tawm cov teeb meem ions pab txhawb kom muaj txiaj ntsig zoo sib cais thiab rov qab los ntawm cov zaub mov muaj txiaj ntsig los ntawm ntau hom ore. Txawm li cas los xij, kom siv tag nrho cov peev xwm ntawm sodium sulfide, nws yog ib qho tsim nyog yuav tsum ua tib zoo xav txog thiab tswj ntau yam uas yuav cuam tshuam rau nws cov kev ua tau zoo nyob rau hauv ib puag ncig nyuaj ntawm kev ua ntxhia. Los ntawm kev ua li ntawd, kev lag luam ua cov ntxhia tuaj yeem ua tiav cov peev txheej rov qab tau zoo dua, txo cov nqi tsim khoom, thiab kev txhim kho kom ruaj khov.