Ịmụba Ngwa Na akọrọ Triboelectric Nkewa nke mineral

Ịmụba Ngwa Na akọrọ Triboelectric

Nkewa nke mineral

James D. Bittner, Kyle P. Flynn, na Frank J. Hrach

ST Equipment & Technology LLC, Needham Massachusetts 02494 USA

Tel: +1-781-972-2300, email: jbittner@titanamerica.com

nkịtị

ST Equipment & Technology, LLC (STET) azụlitewo a nhazi usoro dabeere na triboelectrostatic belt nkewa na-enye ịnweta nhazi ụlọ ọrụ a iji beneficiate ezi ihe na ihe kpamkpam akọrọ technology. N'ụzọ dị iche na ndị ọzọ electrostatic nkewa Filiks na na-a-ejedebeghị na ahụ ukwuu karịa 75μm na size, na triboelectric belt separator kwesịrị ruru eru maka nkewa nke nnọọ mma (<1μm) ka moderately Ntụ (300μm) ahụ na dị nnọọ elu throughput. The elu arụmọrụ multi-ogbo nkewa site esịtidem Nchaji / recharging na egweri ya pụta na dị nnọọ elu karịa nkewa na ike ga-enweta na a ot otu-ogbo free- ada triboelectrostatic separator. The triboelectric belt separator technology e ji mee ikewapụ a dịgasị iche iche nke ihe gụnyere mixtures nke yiri enyo aluminosilicates / carbon, calcite / quartz, talc / magnesite, na barite / quartz. Akụ na ụba tụnyere nke na iji triboelectrostatic belt nkewa vesos ot flotation maka barite / quartz nkewa na-egosi uru nke akọrọ nhazi maka minerals.

Keywords: minerals, akọrọ nkewa, barite, triboelectrostatic Nchaji, belt separator, ofufe ash

OKWU

The enweghị ohere ọhụrụ mmiri na-aghọ a ihe bụ isi na-emetụta ndị feasibility nke na Ngwuputa oru gburugburu ụwa. Dị ka Hubert Fleming, mbụ zuru ụwa ọnụ director maka imu nwa Water, "Of niile Ngwuputa oru na ụwa na ma e kwụsịrị ma ọ bụ kwụsịlata afo gara-aga, ọ dịla, fọrọ nke nta 100% nke ikpe, a n'ihi nke mmiri, ma ozugbo ma ọ bụ n'ụzọ "Blin (2013). Akọrọ ịnweta nhazi ụzọ na-enye ihe ngwọta a na-eru nsogbu.

Wet nkewa ụzọ ndị dị otú ahụ dị ka froth flotation achọ na mgbakwunye na nke chemical reagents na a ga-edozi n'enweghị ihe na-ewekarị nke na-environmentally n'ụzọ. -Apụghị izere ezere na ọ gaghị ekwe omume na-arụ ọrụ na 100% mmiri egweri, ka a na mkpofu nke dịkarịa ala nke akụkụ nke usoro mmiri, kwesiri nwere Chọpụta ichekwa chemical reagents.

Akọrọ ụzọ ndị dị otú ahụ dị ka electrostatic nkewa ga-ewepụ mkpa maka ọhụrụ mmiri, na-enye ndị nwere iji belata-akwụ ụgwọ. Otu n'ime ndị kasị ekwe ọhụrụ tolite na akọrọ ịnweta nkewa bụ triboelectrostatic belt separator. Nke a technology ka akp urughuru size nso ka mma ahụ ka ot electrostatic nkewa teknụzụ, n'ime nso ebe naanị flotation kemgbe ihe ịga nke ọma n'oge gara aga.

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Ọgụgụ 2. Ihe nke nkewa mpaghara

The usoro kpamkpam akọrọ, na-achọ ọ ọzọ ihe ma na-amị dịghị n'efu mmiri ma ọ bụ ikuku anwuru. Na ikpe nke carbon si ada uyi nkewa, na natara ihe iso nke ada uyi ebelata ke carbon ọdịnaya etoju kwesịrị ekwesị maka dị ka a pozzolanic admixture na ihe, na a elu carbon nta nke nwere ike ọkụ na ọkụ eletrik-amụba osisi. Itinye n'ọrụ nke ma ngwaahịa iyi na-enye a 100% ngwọta ofufe ash mkpofu nsogbu.

The triboelectrostatic belt separator dịtụ kọmpat. A igwe iji hazie 40 ise kwa hour bụ mkpokọta 9.1 mita (30 ft) ogologo, 1.7 mita (5.5 ft.) obosara na 3.2 mita (10.5 ft.) elu. The chọrọ itule nke osisi mejupụtara usoro ime akọrọ ihe onwunwe ma si na separator. The compactness nke usoro na-enye ohere maka mgbanwe na echichi aghụghọ.

Ọgụgụ 3. Commercial triboelectrostatic belt separator

Tụnyere ndị ọzọ electrostatic nkewa Filiks

The triboelectrostatic belt nkewa technology ukwuu kọwakwuru nso nke e nwere ike beneficiated site electrostatic Filiks. Ndị akacha eji electrostatic Filiks ịdabere na iche dị na eletriki conductivity nke ihe ndị a ga-iche. Na ndị a Filiks, ihe ga-kpọtụrụ a ebe drum ma ọ bụ efere a mgbe ihe ahụ na-ezighị-boro ebubo site ihe ionizing corona orùrù. Conductive ihe ga-efunahụ ha ụgwọ ngwa ngwa na-atụba si drum. The na-abụghị conductive ihe ka na-mmasị drum kemgbe

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ụgwọ ga dissipate ọzọ ji nwayọọ nwayọọ na ga-ada ma ọ bụ na-leghaara si drum mgbe nkewa si na-eduzi ihe. Ndị a Filiks na-ejedebeghị na ikike n'ihi na achọrọ kọntaktị nke ọ bụla urughuru na drum ma ọ bụ efere. Irè nke ndị a na kọntaktị odori Filiks na-ejedebeghị na ahụ nke banyere 100 μm ma ọ bụ ukwuu na size ruru ma mkpa kpọtụrụ ebe efere na achọrọ urughuru eruba Ọnọdụ. Ahụ nke dị iche iche nha ga-enwe dị iche iche eruba Ọnọdụ ruru inertial mmetụta na ga-eme rụrụ arụ nkewa. Ndị na-esonụ esereese (Ọgụgụ 4) na-egosi na isi atụmatụ nke ụdị separator.

Ọgụgụ 4. Drum electrostatic separator "Elder (2003)"

Triboelectrostatic nkewa na-ejedebeghị na nkewa nke conductive / ndị na-abụghị conductive ihe ma na-adabere na-ọma mara onu ego nyefe site frictional kọntaktị nke ihe na dissimilar n'elu onwu. Nke a na onu e ji mee na "free ọdịda" nkewa Filiks ruo ọtụtụ iri afọ. Ndị dị otú ahụ a usoro a na-e gosiri na ọgụgụ 5. Components nke a ngwakọta nke ahụ mbụ ịzụlite dị iche iche ebubo site na kọntaktị ma na a metal n'elu, ma ọ bụ site na urughuru na urughuru kọntaktị na a fluidized bed nri ngwaọrụ. Dị ka ahụ na-ada site na electric ubi na electrode mpaghara, onye ọ bụla urughuru si trajectory na-mehieworonụ n'ebe electrode nke abụghị ụgwọ. Mgbe a na-anya, collection bins na-arụrụ ọrụ na-ekewa ndị iyi. Ahụkarị nrụnye chọrọ otutu separator nkebi na egweri nke a middling nta. Ụfọdụ ngwaọrụ iji otu ebe iyi nke gas aka erute nke ahụ site na electrode mpaghara.

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Ọgụgụ 5. "Free ọdịda" triboelectrostatic separator

Nke a na ụdị free ọdịda separator nwekwara-agaghị emeli na urughuru size nke ihe nwere ike esichara. Eruba n'ime electrode mpaghara ga-achịkwa iwelata ịgbā iji zere "smearing" nke nkewa. The trajectory nke ezi ahụ na-ọzọ ọma site ịgbā kemgbe aerodynamic ikpuru agha na iwu ahụ bụ ọtụtụ ibu karịa ndị ndọda na electrostatic agha. The nnọọ mma ahụ ga na-agbasaghị na-anakọta na electrode ebupụta na a ga-ewepụ site na ụfọdụ usoro. Ahụ nke na-erughị 75 μm enweghị ike n'ụzọ dị irè iche.

Ọzọ mmachi bụ na urughuru loading n'ime electrode mpaghara ga-ala igbochi ohere ụgwọ mmetụta, nke amachi nhazi ọnụego. Agafe ihe onwunwe site na electrode mpaghara apụtụghị apụta na a otu-ogbo nkewa, ebe ọ bụ na-ekwe omume n'ihi re-Nchaji nke ahụ. Ya mere, multi-ogbo usoro na-achọrọ maka imeziwanye ogo nkewa tinyere re-Nchaji nke ihe onwunwe site ụdi na kọntaktị na a odori ngwaọrụ. Ihe ngwá olu na mgbagwoju na-abawanye ya.

N'ụzọ dị iche na nke ọzọ dị electrostatic nkewa Filiks, na triboelectrostatic belt separator kwesịrị ruru eru maka nkewa nke nnọọ mma (<1 μm) ka moderately Ntụ (300μm) ihe na nnọọ elu throughputs. The triboelectric urughuru Nchaji bụ irè n'ihi na a dịgasị iche iche nke ihe na naanị achọ urughuru - urughuru kọntaktị. The obere ọdịiche, elu electric ubi, ịrụ ụka ugbu a eruba, ike urughuru-urughuru n'ahụhụ na onwe-ihicha ihe nke belt na electrodes bụ oké egwu atụmatụ nke separator. The elu arụmọrụ multi-ogbo nkewa site odori / recharging na esịtidem egweri ya pụta na dị nnọọ elu karịa nkewa na-adị irè na ezi ihe a na-apụghị iche na ihe niile site na ot usoro.

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Ngwa nke TRIBOELECTROSTATIC ájị NKEWA

ada Ash

The triboelectrostatic belt nkewa technology mbụ etinyere industrially na nhazi nke coal combustion ada uyi na 1995. N'ihi na ada uyi ngwa, nkà na ụzụ dịwo irè kewara carbon ahụ si na-ezughị ezu combustion nke coal, si yiri enyo aluminosilicate ịnweta ahụ na ada uyi. The technology kemgbe instrumental na eme egweri nke ịnweta-ọgaranya flyash ka a cement nnọchi na ihe mmepụta. ebe ọ bụ na 1995, 19 triboelectrostatic belt separators e-arụ ọrụ na USA, Canada, UK, na Poland, nhazi n'elu 1,000,000 ise ada uyi kwa afọ. The technology dị ugbu a na-na Asia na-akpa separator arụnyere na South Korea afọ a. The ulo oru akụkọ ihe mere eme nke ada uyi nkewa na-depụtara na Isiokwu 1.

Isiokwu 3. Ihe Nlereanya, ịnweta nkewa iji triboelectrostatic belt nkewa

Iji nke triboelectrostatic belt separator e gosiputara ka irè beneficiate ọtụtụ ịnweta mixtures. Ebe ọ bụ na separator ike hazie ihe na urughuru nha si banyere 300 μm erughị 1 μm, na triboelectrostatic nkewa bụ irè n'ihi na ma-egbochi ihe na conductive ihe, nkà na ụzụ nke ukwuu gbatịrị nso nke na ọdabara ihe onwunwe n'elu ot electrostatic separators. Ebe ọ bụ na triboelectrostatic usoro kpamkpam akọrọ, nke ahu were ya gharazie ịdị mkpa maka ihe onwunwe ihicha na mmiri mmiri n'efu njikwa si flotation Filiks.

Eri nke TRIBOELECTROSTATIC ájị NKEWA

Tụnyere ot Flotation maka Barite

A comparative eri ọmụmụ nyere site STET na ekenịmde Soutex Inc. Soutex bụ a Quebec Canada dabeere engineering ụlọ ọrụ na ọtụtụ ahụmahụ ma na udu mmiri flotation na electrostatic nkewa usoro nwale na imewe. The ọmụmụ tụnyere isi obodo na-arụ ọrụ na-akwụ ụgwọ nke triboelectrostatic belt nkewa usoro ot froth flotation maka beneficiation nke a ala-ọkwa barite ore. Ma teknụzụ kwalite na barite site mwepụ nke ala njupụta solids, tumadi quartz, na-emepụta ihe American Petroleum Institute (API) mkpọpu ala ọkwa barite na SG ukwuu karịa 4.2 g / ml. Flotation pụta nọ na-dabere na pilot osisi ọmụmụ ekenịmde ke Indian National Mettalurgical Laboratory "NML (2004)". Triboelectrostatic belt nkewa pụta nọ na-dabere na pilot osisi ọmụmụ eji yiri oriri ores. The comparative aku ọmụmụ gụnyere flowsheet development, ihe onwunwe na ume ọtùtù, isi ngwá sizing na e kwuru maka ma flotation na triboelectrostatic belt nkewa Filiks. The ndabere maka ma flowsheets bụ otu ihe ahụ, nhazi 200,000 t / y nke barite oriri na SG 3.78 na-emepụta 148,000 t / y nke mkpọpu ala ọkwa barite ngwaahịa na SG 4.21 g / ml. The flotation usoro atụmatụ adịghị agụnye ọ bụla na-akwụ ụgwọ maka usoro mmiri, ma ọ bụ na mmiri ọgwụ.

Flowsheets na-eme site Soutex maka barite flotation usoro (Ọgụgụ 6), na triboelectrostatic belt nkewa usoro (Ọgụgụ 7).

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Ọgụgụ 6 Barite flotation usoro flowsheet

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Ọgụgụ 7 Barite triboelectrostatic belt nkewa usoro flowsheet

Adian flowsheets anaghị agụnye a raw ore ndinuak usoro, nke bụ nkịtị ma teknụzụ. Ndepụta egweri maka flotation ikpe na-emezu site na iji a mmiri pulp bọl na nkume igwe nri na na naa classifier. Ndepụta egweri maka triboelectrostatic belt nkewa ikpe na-emezu site na iji a akọrọ, vetikal ala na nkume igwe nri na integral ike classifier.

The triboelectrostatic belt nkewa flowsheet dị mfe karịa flotation. Triboelectostatic belt nkewa a na-enweta na a otu ogbo enweghị mgbakwunye na nke ọ bụla chemical reagents, tụnyere atọ-ogbo flotation na oleic acid-eji dị ka a mkpoko maka barite na sodium silicate ka a depressant maka silica gangue. A flocculant na-kwukwara ka a reagent maka ndim na barite flotation ikpe. Ọ dịghị dewatering na ihicha akụrụngwa a chọrọ maka triboelectrostatic belt nkewa, tụnyere thickeners, nyo presses, na rotary dryers chọrọ maka barite flotation usoro.

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