FeSi75-A

Hlau Pyrite (Hlau 11 Sulfide): Ib Daim Ntawv Qhia Txog Iron pyrite, tseem hu ua tus neeg ruam tus kub, yog ib yam khoom uas tshwm sim los ntawm cov pob zeb uas muaj feem ntau ntawm hlau 11 sulfide (FeS?). Phau ntawv qhia no muab cov ncauj lus kom ntxaws txog nws cov khoom, kev siv, thiab qhov tseem ceeb ntawm ib puag ncig.

Physical thiab Chemical Properties of Iron Pyrite

Hlau 11 sulfide yog tus cwj pwm los ntawm nws qhov tshwj xeeb brassy-daj xim thiab nws yog xim hlau luster. Nws hardness yog 6-6.5 ntawm Mohs nplai, txhais tau tias nws kuj nyuaj thiab tiv taus khawb. Chemically, nws yog ib qho hlau sulfide, nkag tau los ntawm nws cov qauv siv lead ua cubic. Nws yog qhov tsis tshua muaj tshwm sim nyob rau hauv ib puag ncig huab cua tab sis tuaj yeem hnov ​​​​mob nrog oxygen thiab dej los tsim sulfuric acid, txheej txheem hu ua acid mine kua, uas peb yuav tham tom qab. Cov tshuaj muaj pes tsawg leeg tuaj yeem sib txawv me ntsis nyob ntawm qhov chaw thiab geological tej yam kev mob raws li nws tsim. Qee qhov impurities yuav suav nrog arsenic, cobalt, lossis npib tsib xee.

Txheeb xyuas Iron Pyrite

Qhov txawv hlau 11 sulfide los ntawm cov kub tiag tiag yuav tsum tau ua tib zoo saib. Thaum zoo sib xws hauv cov xim, pyrite feem ntau yog nkig thiab yuav tawm ntawm qhov tsaus ntsuab-dub streak thaum rubbed tawm tsam ib qho tawv tawv, tsis zoo li kub, uas tawm hauv cov xim kub. Ib qho yooj yim acid xeem kuj tuaj yeem paub meej tias nws tus kheej. Pyrite yuav hnov ​​​​mob nrog cov kua qaub uas muaj zog, tsim cov roj hydrogen sulfide, uas muaj cov yam ntxwv ntawm lub qe rotten.

Kev siv ntawm Iron Pyrite

Keeb kwm, hlau 11 sulfide tau ua ib qho tseem ceeb ntawm hlau thiab sulfur. Thaum nws siv los ua cov hlau ncaj qha tau txo qis vim muaj cov ore qib siab dua, nws tseem ceeb heev hauv ntau cov txheej txheem kev lag luam:

1. Sulfuric Acid Production

Qhov tseem ceeb tshaj plaws ntawm kev siv hlau 11 sulfide yog nyob rau hauv zus tau tej cov sulfuric acid (H?SO?). Los ntawm cov txheej txheem hu ua roasting, pyrite yog rhuab nyob rau hauv lub xub ntiag ntawm huab cua, hloov cov sulfur rau sulfur dioxide (SO?), uas yog tom qab siv los tsim sulfuric acid. Cov txheej txheem no tseem ceeb heev rau ntau qhov kev lag luam, suav nrog chiv, tshuaj, thiab hlau tsim.

2. Lwm yam kev siv

Cov me me ntawm hlau 11 sulfide yog siv nyob rau hauv zus tau tej cov pigments, raws li ib tug qhov chaw ntawm leej faj rau ib co metallurgical txheej txheem, thiab nyob rau hauv kev tsim ntawm tej hom pob zeb.

Environmental Considerations: Acid Mine Drainage

oxidation ntawm hlau 11 sulfide, tshwj xeeb tshaj yog nyob rau hauv cov ntsiab lus ntawm mining, tuaj yeem ua rau muaj teeb meem ib puag ncig tseem ceeb: acid mine drainage (AMD). Thaum raug huab cua thiab dej, pyrite reacts tsim sulfuric acid, uas muaj peev xwm leach hnyav hlau los ntawm ib puag ncig pob zeb thiab paug cov dej. Cov kua qaub no tuaj yeem ua rau muaj kev puas tsuaj loj rau cov dej hauv dej thiab ua rau muaj kev phom sij rau tib neeg kev noj qab haus huv.

Cov tswv yim txo qis

Ntau lub tswv yim yog siv los txo qhov cuam tshuam ib puag ncig ntawm AMD, suav nrog: Cov txheej txheem kho mob tsis zoo: Cov no siv cov txheej txheem ntuj tsim, xws li cov av ntub dej, kom tsis txhob muaj cov kua qaub thiab tshem tawm cov hlau hnyav. Cov txheej txheem kho mob nquag: Cov no siv cov txheej txheem tshuaj lom neeg lossis cov txheej txheem lom neeg los kho cov dej acidic ua ntej nws nkag mus rau ib puag ncig. Tiv thaiv kom tsis txhob raug: Txo qhov raug ntawm pyrite rau huab cua thiab dej thaum lub sij hawm thiab tom qab kev ua haujlwm mining.

Xaus

Hlau 11 sulfide, thaum feem ntau saib tsis taus, ua lub luag haujlwm tseem ceeb hauv ntau txoj kev lag luam thiab muaj kev cuam tshuam rau ib puag ncig. Nkag siab txog nws cov khoom thiab muaj peev xwm cuam tshuam ib puag ncig yog qhov tseem ceeb rau kev tswj hwm kev tswj hwm thiab kev tiv thaiv ib puag ncig. Kev tshawb fawb ntxiv thiab kev txhim kho ntawm AMD cov tswv yim txo qis yog qhov tseem ceeb kom txo qis qhov tsis zoo ntawm ib puag ncig cuam tshuam nrog cov ntxhia tseem ceeb no.

Yog xav paub ntxiv txog cov ntaub ntawv thiab cov kev daws teeb meem, xav txog kev tshawb nrhiav cov haujlwm tshiab uas tau ua los ntawm Sab hauv Mongolia Xinxin Silicon Kev Lag Luam Co., Ltd. Lawv txoj kev cog lus rau kev coj noj coj ua ntawm ib puag ncig zoo sib haum xeeb nrog kev xav tau kev daws teeb meem nyob rau hauv cov cheeb tsam cuam tshuam los ntawm kev rho tawm thiab ua cov ntxhia.