Lub luag haujlwm ntawm Sodium Sulfide hauv Mineral Processing

Introduction

Hauv kev ua cov khoom siv hauv cov zaub mov uas nyuaj thiab tseem ceeb , ntau yam tshuaj lom neeg ua lub luag haujlwm tseem ceeb hauv kev ua kom zoo dua qhov kev sib cais thiab rho tawm cov zaub mov muaj nqis. Ntawm cov no, sodium sulfide (Na₂S) sawv tawm ua ib qho tshuaj lom neeg uas siv tau ntau yam thiab siv dav. Nws muaj ntau yam haujlwm hauv ntau hom kev ua cov zaub mov sib txawv, tshwj xeeb tshaj yog hauv cov txheej txheem flotation , uas yog qhov tseem ceeb rau kev rov qab tau cov zaub mov los ntawm cov ores.

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 tshuaj tiv thaiv zoo rau feem ntau cov zaub mov sulfide thaum siv ntau heev. Qhov kev txiav txim ntawm nws cov nyhuv inhibitory rau cov zaub mov sulfide feem ntau txo qis raws li nram no: galena, sphalerite, chalcopyrite, bornite, covellite, pyrite, thiab chalcocite. Qhov tseem ceeb, vim yog qhov zoo heev ntawm molybdenite floatability, sodium sulfide tsis tuaj yeem tiv thaiv nws. Cov yam ntxwv no yog siv rau hauv kev flotation ntawm molybdenite, qhov twg Na₂S tuaj yeem siv los tswj kev flotation ntawm lwm cov zaub mov sulfide, tso cai rau kev sib cais xaiv 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. Kev Tshawb Fawb Txog Cov Pob Zeb : Qhov sib txawv ntawm cov pob zeb hauv av tuaj yeem muaj feem cuam tshuam loj heev. Piv txwv li, hauv cov pob zeb oxide sulfidization, qhov muaj cov pob zeb sib txawv xws li galena, sphalerite, thiab cerussite hauv cov pob zeb tuaj yeem ua rau cov txheej txheem tshuaj tiv thaiv nyuaj. Ib yam li ntawd, qhov muaj ntau yam pob zeb oxide xws li malachite, azurite, atacamite, thiab chrysocolla ua ke kuj cuam tshuam rau qhov cuam tshuam ntawm sulfidization.

2. Sodium Sulfide - Siv Cov Zaub Mov : Cov zaub mov xws li pyrite, marcasite, talc, cerussite, clays, slimes, alkaline earth salts, gypsum, thiab chlorides siv tau sodium sulfide. Kev siv qhov no yuav ua rau tsis muaj sodium sulfide txaus rau cov tshuaj tiv thaiv xav tau hauv cov txheej txheem flotation, yog li ntawd nws txo qis nws cov txiaj ntsig.

3. Tus Nqi pH : Yog tias siv sodium sulfide ntau dhau, pH ntawm cov hlau ore pulp yuav ntau dhau. Qhov pH siab heev no tsis yog tsuas yog cuam tshuam rau cov tshuaj lom neeg ntawm sodium sulfide nrog cov zaub mov xwb tab sis kuj cuam tshuam rau kev ua haujlwm ntawm lwm cov tshuaj reagents hauv lub kaw lus flotation, thaum kawg cuam tshuam rau kev sib cais thiab rov qab tau cov zaub mov.

4. Qhov Chaw thiab Tus Naj Npawb ntawm Cov Theem Ntxiv Sodium Sulfide : Lub sijhawm thiab tus naj npawb ntawm cov sodium sulfide raug ntxiv thaum lub sijhawm flotation kuj tseem ceeb heev. Qhov chaw ntxiv tsis raug lossis tus lej ntawm cov theem ntxiv tsis raug yuav ua rau muaj kev faib tawm 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 Khoom Siv Hauv Dej : Cov khoom siv hauv cov txheej txheem flotation, tshwj xeeb tshaj yog cov calcium, magnesium ions, thiab dej hardness, tuaj yeem cuam tshuam nrog sodium sulfide thiab cov zaub mov. Cov kev cuam tshuam no yuav txhawb lossis tiv thaiv cov tshuaj tiv thaiv ntawm sodium sulfide, yog li cuam tshuam rau nws lub luag haujlwm hauv kev ua cov zaub mov.

xaus

Sodium sulfide ua lub luag haujlwm ntau yam thiab tsis tseem ceeb hauv kev ua cov pob zeb hauv av, tshwj xeeb tshaj yog hauv kev ua kom dej ntws. Nws ua haujlwm ua tus inhibitor, sulfidizing agent , desorbing agent, thiab nws lub peev xwm tshem tawm cov ions tsis zoo pab txhawb rau kev sib cais thiab rov qab tau cov pob zeb muaj nqis los ntawm ntau hom ores. Txawm li cas los xij, txhawm rau siv tag nrho lub peev xwm ntawm sodium sulfide, nws yog qhov tsim nyog los xav txog thiab tswj ntau yam uas yuav cuam tshuam rau nws cov kev ua tau zoo hauv qhov chaw nyuaj ntawm kev ua cov pob zeb hauv av. Los ntawm kev ua li ntawd, kev lag luam ua cov pob zeb hauv av tuaj yeem ua tiav cov nqi rov qab tau cov peev txheej siab dua, cov nqi tsim khoom qis dua, thiab kev txhim kho kom ruaj khov dua.