Muindasitiri yemigodhi nekugadzira zvicherwa yemazuva ano, rimwe rematambudziko aripo zvakanyanya ndere kubata nemaslimes—zvimedu zvidiki-diki zvinowanzova zvidiki pane 44 microns zvinogona kukanganisa zvakanyanya maitiro ekudzoreredza -7 -9 . Dutu reDesliming, iro rakanyanya kugadzirwa nehydrocyclone, rave mhinduro inokosha yekubvisa faini idzi dzinonetsa dzisati dzasvika pakuyangarara, kupatsanurwa kwegiravhiti, kana mamwe matanho ekuwedzera -3 . Chinyorwa chino chinoongorora misimboti yekushanda, mashandisirwo, uye shanduko yekuchinja kweDesliming cyclones mumabasa ekuchera pasi rese.

Chii Chinonzi Dutu Rinoparadza?

Dutu rinobvisa simba remhepo (desliming cyclone) ndiro rinoshandiswa kugadzira zvinhu zvakasiyana-siyana zvinoshandisa simba repakati (centrifugal force) kupatsanura zvinhu zvichienderana nehukuru uye huwandu hwezvinhu. Dutu iri rinoiswa muchikamu chepamusoro che cylindrical, zvichiita kuti pave nemhepo inotenderera. Zvinhu zvakakora uye zvinorema zvinomanikidzwa kubuda nekudzika zvichitevedza madziro e cone, zvichibuda nepasi pemvura (apex). Zvinhu zvakapfava, zvakareruka—zvinotsvedza—zvinofamba zvichienda mberi zvichikwira nemhepo yepakati, zvichibuda nepamvura inoyerera -22.

Kusiyana nemahydrocyclone anoshandiswa mukugadzira macircuit circuit, ma desliming cyclones akagadzirwa kuti aite zvidimbu zvidiki-diki—kazhinji pa30 kusvika 44 microns—apo kuongorora kunova kusina mari yakawanda uye kusingashande zvakanaka -7 -9 . Dhizaini yavo diki, kugona kwayo kukuru, uye nyore kwayo kushanda kunoita kuti ive sarudzo inosarudzwa yekushandiswa kwe desliming muindasitiri yemigodhi -22.

Nei Kusada Kuderedza Zvinhu Kuchikosha

Madota haasi marara chete; anoderedza mashandiro ekugadzirisa zvicherwa. Mumacircuits ekuyangarara, madota anogona kushandisa ma reagents ekuyangarara asingabatsire pakudzoreredza uye anogona kuwedzera hunyoro hwechigadzirwa -3 . Mumasystem ekuparadzanisa giravhiti senge ma spirals, madota anokanganisa maitiro ekuparadzanisa -3 . Pakugadzirira marasha, chikamu che minus 44 micron chinowanzova nehuwandu hwedota hunopfuura 30%, zvichiita kuti zvisakwanise kudzoreredza -9.

Dambudziko rehupfumi rakakura. Pafekitori yesimbi yeVale's Vargem Grande 2 muBrazil, kurasikirwa kwesimbi kwaisvika paavhareji ye18% nehuremu hwese hwesimbi inocherwa—yakaenzana nematani esimbi anorasikirwa nemamiriyoni 1.9 pagore -16 – . Izvi hazvingomiriri chete kurasikirwa kwemari asiwo kuwedzera kwemari yekutarisira tsvina uye zvikwereti zvezvakatipoteredza.

Zvishandiso Zvikuru Muindasitiri Yemigodhi

Kubatsira kwesimbi

Madutu anobvisa simbi anoita basa guru mukugadzirisa simbi, kunyanya sezvo nzvimbo dzakachengetwa dzemhando yepamusoro dzichipera uye vanoishandisa vanotendeukira kumatombo emhando yepasi -5 . Zvinhu zvakasara zvemarara akacheneswa—zvinowanzo umbwa nesimbi, alumina, uye silica—zvine matambudziko makuru ekugadzirisa nekuda kwehukuru hwazvo hwezvinhu zvakacheneswa uye mineralology yakaoma -5.

Zvitsva zvitsva zvave nekuvandudza mashandiro ekuderedza uremu. Weir Minerals' CAVEX® 2 CVD hydrocyclone, ine LIG+™ laminar spiral inlet yepamusoro inoderedza turbulence, yakawana kuwedzera kwe9 muzana mukudzoreredza huwandu hwemhepo paVale's VGR2 plant, ichiwedzera kudzoreredza kusvika 56% -16 -18 . Dhizaini itsva iyi yakawedzerawo kugona kwehuwandu hwemhepo neanenge 30%, zvichibvumira madutu mashanu anoshanda kutsiva mayuniti manomwe uku achitora nzvimbo imwechete -16 -18.

Pamugodhi weTata Steel's Khonbond muIndia, uko limonitic ore inogadzira ultrafine slimes (≤30 μm) ine iron values ​​yakanaka, kugadziriswazve kuCAVEX® 2 400CVD hydrocyclones kwakaita kuti basa iri rikwanise kusvika pachinangwa che8% cheiron goho icho chakanga chisingakwanisike kare nemidziyo yemazuva ano -5.

Coal Processing

Mukugadzirira marasha, madutu ekudzikisa marasha anowanzoiswa pamberi pema "spiral concentrators" kuti abvise zvinhu zvakapfava, zvine dota rakawanda risingakwanise kushandiswa ne "spirals" . Mafambiro eindasitiri anofarira kuderedza huwandu hwemayuniti anoshanda, nemadutu makuru ane dhayamita uye nzvimbo dzakakora dzinosarudzwa - . Zvisinei, chinangwa chiri kuwedzera pakuderedza nzvimbo dzekucheka kuti zvideredze kurasikirwa kwezvinhu zvakakora zvichikwira -.

Dutu remadutu rine nhanho mbiri raratidza kushanda zvakanyanya pakubvisa marasha. Dutu guru re500-mm rinocheka 150-micron, nepo dutu rechipiri re250-mm kana 150-mm rinocheka 70-micron -9 . Nzira iyi inoshandisa hunhu hwehukuru hwakasiyana hwedutu kuti riwane kupatsanurwa kwakapinza kupfuura masisitimu edanho rimwe chete -9.

Simbi dzemhangura nedzehwaro

Maore eCopper oxide anowanzova nehuwandu hwakawanda hweslime, uye maminerari eCopper anogona kurasikirwa panguva yekunatswa -4 . Miedzo yeindasitiri yakaratidza kuti kuwedzera sisitimu yekubvisa sliming yeCyclone usati wadonha kunogona kuvandudza kupora. Pane imwe operation, copper sulfide flotation tailings yakagadziriswa kuburikidza neCyclone desliming circuit yakawana huwandu hwakakwana hweCopper oxide concentrate ine 24.63% Cu ne85.55% recovery - ichipfuura direct sulfidizing flotation chete -4.

Zvicherwa zvePhosphate neIndasitiri

Mukugadzirisa phosphate ore, desliming yakakosha pakuwedzera sarudzo mu flotation iri pasi pemvura -22 . Zvisinei, zvinogonawo kukonzera kurasikirwa nemaminerari ane phosphorus nekuda kwemaslimes. Maitiro ekugadzira mamodeling epamusoro uye simulation ari kushandiswa kugadzirisa ma cyclone geometries nemamiriro ekushanda, zvichienzanisa mabhenefiti ekubvisa slime nekurasikirwa nemaminerari anokosha -22.

Pakugadzirisa ilmenite zvakanaka, dheti rekudzikisa dutu remhepo + reflotation rakaratidza kushandiswa kwakaderera kwe reagent uye magiredhi epamusoro e titanium concentrate zvichienzaniswa ne magnetic separation + flotation alternatives, zvichiwana 47.06% TiO₂ pa 59.03% recovery -1.

Dhizaini Kufunga uye Maitiro Akanakisisa

Madutu anobvisa sliming anowanzova madiki mudhayamita pane madutu anopatsanurwa—kazhinji 100 mm kusvika 250 mm—kuti awane nzvimbo dzakatetepa dzekucheka – – . Zvisinei, kana mwero wemvura yakawanda uchifanira kugadziriswa, huwandu hwakawanda hwemayuniti hunogona kudiwa – . Magadzirirwo emazuva ano anosimbisa kugadziriswa kuri nyore, nemakavha epamusoro anobvumira madutu ega ega kubviswa kuti agadziriswe pasina kubvisa chikafu kana pombi dzinopfuura –.

Zvinhu zvakakosha pakushanda zvinosanganisira kumanikidzwa kwekudya, dhayamita yepamusoro, uye dhayamita yekuwana vortex - . Madutu anoshanda zvakanaka pahuwandu hwakaderera hwezvinhu zvakasimba, asi zvirimwa zvinotsvaga kuderedza kushandiswa kwemvura zvinosunda huwandu hwakanyanya hwezvinhu zvakasimba zvinobvumidzwa - kutengeserana kunoda kuyera kwakanyatsonaka -3.

Nguva yekupfekwa ndeimwe pfungwa inokosha. Madutu anobvisa tsvina akagadzirwa nezvinhu zvisingapfeki zvakaita sepolyurethane kuti agone kusimba semaminerari anotsvedza - . Vagadziri vava kupa madutu ane dhayamita kubva pamasendimita matatu kusvika makumi mana nemaviri, ane simba rinosvika 5,800 GPM, rakagadzirirwa kushanda nesimba nguva dzose -.

The Bottom Line

Sezvo mabasa ekuchera migodhi ari kuramba achigadzirisa matombo emhando yepasi uye achitarisana nemitemo yakaoma yezvakatipoteredza, basa rekubvisa madutu emugungwa richawedzera kukosha. Midziyo iyi isinganyanyi kukosha haisi michina yekubatsira chete—inobatsira zvikuru pakudzoreredza zvicherwa zvinobudirira, zvichikanganisa zvakananga goho rezvirimwa, kushandiswa kwezvinoshandiswa, mhando yechigadzirwa, uye manejimendi yetsvina -3 . Nekuvandudzwa kuri kuenderera mberi mukugadzira madutu emugungwa uye kushandiswa kwezvishandiso zvepamusoro zvekufananidzira kuti zvigone kushandiswa, madutu ekubvisa madutu emugungwa ari kuramba achichinja seimwe yezvishandiso zvine simba uye zvinodhura zvishoma muzvigadzirwa zvemainjiniya ekugadzirisa zvicherwa -.

Kune mabasa ekuchera migodhi ari kutsvaga kuwedzera kudzoreredzwa kwezvinhu uye kuderedza marara, kuisa mari muhunyanzvi hwakakodzera hwekubvisa marara emhepo uye maitiro ekushanda hazvisi zvekusarudza - zvakakosha.