Select Language:
aan la taaban karin
ST Qalabka & technology, LLC (STET) ayaa sameeyay nidaamka processing ah tribo-electrostatic-soociddiisa suunka bixiya warshadaha macdanta loo adeegsanayo in la beneficiate qalab wanaagsan oo technology ah oo gebi ahaanba qalalan. Marka la barbardhigo hababka kale ee isa-soociddiisa electrostatic in caadi ahaan ku koobnayn qayb weyn yahay 75μm ee size, SEPARATOR ee suunka triboelectric waxaa haboon kala ah mid aad u wanaagsan (<1μm) si dhexdhexaad ah aan dhab ahayn (300μm) Qurub la dhex mid aad u sarreeya. The technology SEPARATOR suunka triboelectric ayaa loo isticmaalay in lagu kala tiro balaadhan oo ah qalabka ay ku jiraan dhuxusha ash dhoobnayd sari, calcite / quartz, Rusheyn kartaa / magnesite, barite / quartz, iyo feldspar / quartz. Natiijada Kala waxaa lagu soo bandhigay ku tilmaamay dhaqanka tribo-ku amraya macdanta bauxite ah.
Hordhac
la'aanta ah ee ay helaan biyo nadiif ah ayaa noqonaya arrin weyn oo saameyn ku Bulshda ee mashaariicda macdan adduunka oo dhan. Sida laga soo xigtay Hubert Fleming, agaasimaha caalamiga hore ee Hatch Biyaha, "Dhammaan mashaariicda macdan ee dunida ayaa sidoo kale la joojiyay ama hoos sanadkii la soo dhaafay, waxa uu ahaa, ku dhowaad 100% ee kiisaska, sabab u ah biyo, si toos ah ama si dadban ".1 hababka processing macdanta qallalan bixiyaan mushkiladda xal loo this shiddadii.
Hababka qallalan sida soociddiisa electrostatic reebi doonaan baahida loo qabo biyo nadiif ah, oo waxaad bixisaa awood u leh in la yareeyo kharashka. hababka kala go'ida Electric in isticmaali xiriir, ama tribo-korontada, xukun yihiin particularity xiiso leh sababtoo ah iman kara ay u kala soocaan kala duwan oo isku kooban tabinta, qalabada, iyo qayb semi-tabinta.
xukun Tribo-korontada dhacdaa marka Discrete, Qurub duwana isku mid kale, ama dusha saddexaad, taasoo keentay in farqiga lacag dusha u dhexeeya laba nooc oo walxaha. The calaamad iyo magnitude of farqiga amarka qayb ahaan ku xiran tahay farqiga u xididnaa electron (ama hawlaha shaqada) u dhexeeya nooc walxaha. Kala ka dibna waxaa lagu gaari karaa iyadoo la isticmaalayo beerta korontada ah oo dibadda laga codsadaa.
Farsamada ayaa waxaa looga faa'iideysan industrially in separators nooca free-dayrta toosan. In separators free-dayrta, Qurub ugu horeysay helaan lacag, ka dibna dhici by cuf iyada oo qalab la soo horjeeda electrodes in codsan a beerta korontada xoog leh leexiyo dhabbihii ka mid ah qayb ka ah sida calaamad oo magnitude of charge.2 dusha ay u separators Free-dayrta noqon kartaa wax ku ool ah waayo qayb ka dhab ahayn, laakiin ma aha kuwo wax ku ool ah at qayb ka maaraysay qaadhaan badan oo ku saabsan 0.075 si ay u 0.1 mm.3,4 Mid ka mid ah horumar cusub ugu wanaagsan ee kala macdanta qalalan waa SEPARATOR tribo-electrostatic suunka. Technology Tani ayaa kala duwan ee size walxaha si ay qaadhaan Qurub badan teknoolajiyada-soociddiisa electrostatic caadiga ah, galay kala duwan halkaas oo sabeynta kaliya ayaa guul ee la soo dhaafay.
Tribo-Electrostatic Belt Kala
In SEPARATOR tribo-electrostatic suunka (Jaantuska 1 iyo Jaantuska 2), wax la quudiyey galay farqiga khafiif ah 0.9 - 1.5 cm u dhexeeya labada electrodes planar isku midka ah. qayb ka yihiin triboelectrically eedeeyay by xiriir interparticle. Tusaale ahaan, in ay dhacdo dhuxusha ash dhoobnayd sari, isku dar ah oo qayb ka carbon oo qayb ka macdanta, carbon ay si togan u soo oogay iyo macdanta xun lagu eedeeyay waxaa soo jiitay in electrodes soo horjeeda. qayb ka yihiin ka dibna isagoo xaaqan oo ay si joogto ah u dhaqaaqin suunka-mesh furan iyo gaadhsiiyey jiho ka soo horjeeda. Suunka guuro qayb ka ku xiga si ay koronto kasta xagga ugu shishaysa soo horjeeda ee SEPARATOR ah. duurka oo korontada guurto baahan kaliya qayb ka ah jajab yar oo centimitir ah inuu u dhaqaaqo walxaha ka durdur bidix u dhaqaaqo a xaq-dhaqaaq. counter socodka hadda ka mid ah qayb ka kala oo xukun triboelectric joogtada ah by shilalka carbon-macdanta siinayaa a kala go'ida iyo natiijooyinka multi-yada ka khayroon daahirnimo fiican iyo soo kabashada ee unit-hal baas. The xawaaraha suunka sare ayaa sidoo kale u saamaxaaya throughputs mid aad u sarreeya, ilaa 40 tan saacadiiba hal SEPARATOR a. By gacanta beegyada uu nidaamka kala duwan, sida xawaaraha suunka, dhibic feed, farqiga koronto iyo heerka feed, qalabka soo saarta ash dhoobnayd carbon hooseeyo ee ka kooban carbon ah 2 % ± 0.5% ka dambas Daqsi feed ka bilowda in carbon ka 4% in ka badan 30%.
design SEPARATOR waa mid yara fudud. The suunka iyo rollers la xiriira waa qaybo ka mid kaliya uusan u dhaqaaqin. electrodes waa taagan oo ka kooban qalab ah oo ku haboon raagaya. Suunka laga sameeyey qalab caag ah. dhererka koronto SEPARATOR waa qiyaastii 6 mitir (20 ft.) iyo width ah 1.25 mitir (4 ft.) for size buuxa unugyada ganacsi. isticmaalka Awooda waa in ka yar 2 kilowatt-saac tonne ee wax baaraandegi leh ugu xoogga baabbi'iyey laba matoorrada wadista suunka.
Geedi socodka gebi ahaanba qalalan, wuxuu u baahan yahay ma qalab dheeraad ah oo soo saarta oo aan lahayn biyo qashinka ama qiiqa hawada. In the case of carbon ka kala ash dhoobnayd, qalabka soo kabsaday ka kooban yihiin ash dhoobnayd hoos ku content carbon in heerka ku haboon in loo isticmaalo sida shaydi a pozzolanic ee la taaban karo, iyo jajab carbon sare ah oo lagu gubay karo warshad koronto dhalin ah. Isticmaalka labada durdurrada wax soo saarka waxay bixisaa a 100% xal inuu u duulo dhibaatooyinka qubo ash. Waayo, kala macdanta, bauxite processing tusaale ahaan, SEPARATOR bixisaa technology ah si loo yareeyo isticmaalka biyaha, kordhiyo nolosha reserve iyo / ama soo kabsado iyo reprocess tailings.
SEPARATOR The tribo-electrostatic suunka waa is haysta. Mashiinka A loogu talagalay in lagu farsameeyo 40 tan saacaddii waa qiyaastii 9.1 mitir (30 ft.) dheer, 1.7 mitir (5.5 ft.) ballaaran oo 3.2 mitir (10.5 ft.) sare. Miisaanku waa loo baahan yahay ee warshadda ka kooban tahay nidaamka uu u gudbiyo wax qallalan iyo ka SEPARATOR ah. compactness The nidaamka u oggolaanaysa in dabacsanaan naqshadooda rakibaadda.
technology The tribo-electrostatic-soociddiisa suunka waa adag iyo industrially xaqiijiyay, oo markii ugu horaysay la industrially codsatay in ay howsha ash dhuxusha Daqsi sari ee 1995. technology waa wax ku ool ah kala qayb carbon ka sari ee aan dhamaystirnayn oo dhuxusha, ka qayb macdanta aluminosilicate madxafka in ash Daqsi. Technology ayaa qeyb muhim ah in awood recycle of ash macdanta qaniga Daqsi bedelka cement ee wax soo saarka la taaban karo a. Tan iyo markii ay 1995, ka badan 20,000,000 tan oo ash dhoobnayd ayaa baaraandegi by 19 separators suunka tribo-electrostatic rakibay ee USA, Canada, UK, Poland, iyo South Korea. Taariikhda warshadaha nijaasta ash dhoobnayd waxaa ku qoran Miis 1.
Miis 1. codsiga Industrial nijaasta suunka tribo-electrostatic for ash dhoobnayd
| utility / saldhiga korontada | Location | Start hawlgallada ganacsi | faahfaahinta Facility |
|---|---|---|---|
| Duke Energy - Roxboro Station | North Carolina USA | 1997 | 2 Separators |
| luqadaha Energy- Brandon xeebaha | Maryland USA | 1999 | 2 Separators |
| Power Scottish- Longannet Station | Scotland UK | 2002 | 1 SEPARATOR |
| Jacksonville Electric-St. Beerta Korantada ee Johns River | Florida USA | 2003 | 2 Separators |
| South Mississippi Power Power -R.D. Morrow | Mississippi USA | 2005 | 1 SEPARATOR |
| New Brunswick Power-Belledune | New Brunswick Kanada | 2005 | 1 SEPARATOR |
| OF loo kansalay-Didcot Station | England UK | 2005 | 1 SEPARATOR |
| Luuqadaha Saldhigga Jasiiradda Tamarta-Brunner | Pennsylvania USA | 2006 | 2 Separators |
| Tampa Electric-Big laab Station | Florida USA | 2008 | 3 Separators two-pass scavenging |
| OF loo kansalay Aberthaw-Station | Wales UK | 2008 | 1 SEPARATOR |
| EDF Energy-West Burton Station | England UK | 2008 | 1 SEPARATOR |
| ZGP (Lafarge Cement / Ciech Janikosoda JV) | Poland | 2010 | 1 SEPARATOR |
| Korea Koonfur Power- Yeongheung | South Korea | 2014 | 1 SEPARATOR |
| PGNiG Termika-Sierkirki | Poland | 2018 | 1 SEPARATOR |
| Shirkadda Cuntada ee Sibheiyo -Cihibu | Japan | 2018 | 1 SEPARATOR |
| Armstrong Fly Ash- Celement Cement | Filibiin | qorsheeyey 2019 | 1 SEPARATOR |
| Korea Koonfur Power- Samcheonpo | South Korea | qorsheeyey 2019 | 1 SEPARATOR |
Tribo-Electrostatic Kala bauxite Macdanta
ST Qalabka & technology (STET) qiyaasta kursiga keydka sameeyaa baaritaanka tribo-electrostatic qalalan separation on-baarka kala duwan oo ah macdanta bauxite. baarka The ku qoran yihiin hoos ku qoran ee Miis 2.
Miis 2. Guryaha ah baarka bauxite tijaabiyey by STET
| Description | Desired Product & Goals | |
|---|---|---|
| Sample 1 | ROM Bauxite | Al2O3 recovery Reduce SiO2, Fe2O3, TiO2 |
| Sample 2 | PLK (Partially Lateritized Khondalite) | Al2O3 recovery Reduce SiO2, Fe2O3, TiO2 |
| Sample 3 | Red Mud | Fe2O3 recovery Reduce SiO2, Al2O3, TiO2 |
| Sample 4 | ROM Bauxite Slimes | Al2O3 recovery Reduce SiO2, Fe2O3, TiO2 |
Halabuurka kiimikada ee dhammaan baarka feed iyo wax soo saarka soocay waxaa lagu cabbiraa X-Ray Fluorescence (XRF) iyadoo la isticmaalayo nidaamka WD-XRF a. Natiijada falanqayn kiimikada loogu talagalay qofka shaybaarka feed ah waxaa lagu muujiyey hoos in Miis 3.
Miis 3. guryaha Chemical ah baarka bauxite tijaabiyey by STET
| Al2O3 wt.% | Fe2O3 wt.% | SiO2 wt.% | SiO2 wt.% | LOI wt.% | |
|---|---|---|---|---|---|
| Sample 1 | 43.7 | 25.9 | 3.9 | 2.3 | 23.6 |
| Sample 2 | 34.9 | 19.4 | 28.5 | 2.1 | 14.7 |
| Sample 3 | 19.0 | 52.1 | 6.7 | 4.9 | 11.1 |
| Sample 4 | 34.6 | 23.2 | 18.0 | 4.4 | 18.8 |
size walxaha waxaa lagu cabbiraa cabiraada size walxaha laser isticmaalaya firidhsan pneumatic qalalan. Natiijooyinka loogu talagalay qofka shaybaarka feed waxaa lagu muujiyey hoos in Miis 4.
Miis 4. size walxaha of baarka bauxite tijaabiyey by STET
| D10 micron | D50 micron | D90 micron | D90 micron |
|
|---|---|---|---|---|
| Sample 1 | 2 | 19 | 73 | 118 |
| Sample 2 | 2 | 45 | 575 | 898 |
| Sample 3 | 1 | 27 | 212 | 325 |
| Sample 4 | 1 | 7 | 59 | 93 |
Muunado la kala isticmaalaya SEPARATOR benchtop STET ah. SEPARATOR benchtop Waxaa loo isticmaalaa in lagu sameynayaa caddeynta xukun tribo-electrostatic iyo si loo ogaado haddii ay wax a uu yahay musharaxa wanaagsan beneficiation electrostatic. Farqiga u dhaxeeya SEPARATOR benchtop iyo pilot-baaxadda iyo separators ganacsi baaxad waa in dhererka SEPARATOR benchtop waa qiyaastii 0.4 jeer dhererka unugyada pilot-baaxadda iyo ganacsi oo baaxad. Sida oolnimada SEPARATOR waa shaqo ah oo dhererkeedu yahay koronto ah, imtixaanka kursiga keydka-miisaanka ma loo isticmaali karaa bedel imtixaanka pilot-baaxadda. imtixaanka Pilot-qiyaasta loo baahan yahay si loo ogaado inta uu la egyahay-soociddiisa oo ah in geeddi-socodka STET wuxuu gaadhi karaa, iyo si loo ogaado haddii habka STET kulmi kartaa bartilmaameedyada sheyga hoos heerka feed siiyey. halkii, SEPARATOR benchtop loo isticmaalo inuu meesha ka saaro waxyaabaha musharax in ay yihiin lagama yaabo in ay muujiyaan wax-soociddiisa oo muhiim ah heer pilot-iskeelka. Natiijooyinka helay on the keydka baaxad la non-filaayo doonaa, iyo kala arkay ka yar tahay taas oo laga dheehan lahaa on a SEPARATOR STET xajmi ganacsi.
Imtixaanka la SEPARATOR benchtop STET ka muujiyeen dhaqdhaqaaqa weyn ee Al2O3 leh inta badan ee tijaabada la tijaabiyey. In saddex oo ka mid ah afar shay-baarka tijaabiyey by STET, dhaqdhaqaaq la taaban karo ee Al2O3 ayaa lagu arkay. Intaa waxaa dheer, waxyaalaha kale ee waaweyn ee Fe2O3, SiO2 iyo TiO2 muujiyeen dhaqdhaqaaqa weyn kiisaska intooda badan. In Sample 1, Sample 3 iyo Sample 4, dhaqdhaqaaqa khasaaro on suuroggalaan (SHARCIGA) dhaqdhaqaaqa raacay of Al2O3. dhaqdhaqaaqa walxaha waaweyn oo lagu muujiyay hoose Jaantuska 5.
SEPARATOR STET The waa hab-soociddiisa jirka iyo eegista kala weji macdanta ku salaysan tribocharging, ifafaale dusha a. Darajada kaas oo macdanta waa u nugul tribocharging waa mararka qaarkood in la saadaaliyay via tashiga ee taxane ah oo triboelectric awoodi, laakiin ay dhacdo senti macdanta oo adag, inta badan ku dhaqanka waa siman loo go'aamiyo. kooban oo ka mid ah guryaha tribocharging for tijaabada tijaabiyey lagu muujiyay hoose Miis 5.
Miis 5. Kooban dhaqanka tribocharging for walxaha waaweyn. POS = eedeeyay wanaagsan, NEG = eedeeyay negative.
| Al2O3 | Fe2O3 | SiO2 | TiO2 | SHARCIGA | |
|---|---|---|---|---|---|
| Sample 1 | POS | NEG | NEG | NEG | POS |
| Sample 2 | NEG | POS | NEG | N/A | N/A |
| Sample 3 | POS | NEG | N/A | NEG | POS |
| Sample 4 | POS | N/A | NEG | NEG | POS |
processing qallalan la SEPARATOR STET waxay bixisaa fursado ay ku dhalin qiimaha for bauxite iyo aluminium saarayaasha. isticmaalka lacag dhigaal ah bauxite fasalka hoose u ogolaan kartaa kharashka macdanta hoose by yaraynta saamiga siibi iyo ab ka hoos tailings. Intaa waxaa dheer, ka hor-socodsiinta miraha bauxite by kala -tagga triboelectrostatic qallalan ayaa laga yaabaa inay keento horumar dhaqaale oo sifeyn aluminium ah iyadoo la siinayo darajooyin sare oo bauxite ah habka nadiifinta, ama by yaraynta Muga dhoobo cas ahbaa. Intaa waxaa dheer, content aluminium sare ee dhoobo cas ogolaan kartaa reprocessing. kooban oo ka mid ah sifooyinka ugu fiican ee bauxite fasalka qodniinka- la soo bandhigay, iyo sidoo kale warbixin kooban oo faa'iido u ah SEPARATOR ku STET, hoose Miis 6.
Miis 6. Summary of sifooyinka fiican ee bauxite fasalka qodniinka-.5
| Ideal Grade Characteristic | Impact if Inadequate | Observed with STET Separation |
|---|---|---|
| Low “reactive silica” (>1.5% - <3.0%) (kaolinite) | Increases caustic usage, a critical operating cost factor. | Reduction in total silica |
| High extractable alumina | Increases capital and operating costs for mining, processing and mud disposal. | Increase in alumina |
| Low organic carbon | Increases operating costs by reducing plant efficiency. | |
| Low boehmite (<3%) | Precludes low-temperature processing that can increase capital and operating costs. | |
| Low goethite (tolerable in a high-temperature plant or with high hematite) | Slows clarification, lowers product quality and increases alumina loss via mud circuit. | Reduction in total iron |
| Low moisture (can create nuisance dust if too low) | Increases capital costs (larger evaporation facility), fuel consumption, shipping costs. | |
| Iron content (ideally >5%-<15%) | Low iron can lower product quality. High iron dilutes alumina content of bauxite. | Reduction in total iron |
| Low quartz | Increases maintenance costs (pipe wear). Increases caustic usage in high-temperature plants. | Reduction in total silica |
| Low impurities and trace elements | Can lower process efficiency (sulfur, chlorine, calcium) and metal quality (gallium, zinc, vanadium, phosphorus). | |
| Soft and friable | Increases mining and grinding costs. | |
| Dissolves readily | Increases capital (larger digestion equipment) and operating costs. | |
| Low titania | Can increase caustic usage in high-temperature plants. | Reduction in titania |
| Low carbonates | Can require special processing. |
Gunaanad
separation Tribo-electrostatic ahaa muujiyeen sida hab wax ku ool ah u dhalin ore-fasalka sare bauxite ah si loogu isticmaalo wax soo saarka alumina. Imtixaanka la SEPARATOR benchtop STET ka muujiyeen dhaqdhaqaaqa weyn ee Al2O3 leh inta badan ee tijaabada la tijaabiyey. In saddex oo ka mid ah afar shay-baarka tijaabiyey by STET, dhaqdhaqaaq la taaban karo ee Al2O3 ayaa lagu arkay. Intaa waxaa dheer, waxyaalaha kale ee waaweyn ee Fe2O3, SiO2 iyo TiO2 muujiyeen-soociddiisa oo muhiim ah kiisaska intooda badan. processing qallalan la SEPARATOR STET waxay bixisaa fursado ay ku dhalin qiimaha for bauxite iyo aluminium saarayaasha.
tixraacyada
1. Blin, P & Dion-Ortega, A (2013) High iyo qallalan, CIM Magazine, vol. 8, no. 4, pp. 48-51.
2. Manouchehri, H, Hanumantha Roa, K, & Fors Mountain, K (2000), Review of Hababka Kala korontada, Part 1: dhinacyo Fundamental, macdanta & Processing qodniinka-, vol. 17, no. 1 pp 23-36.
3. Manouchehri, H, Hanumantha Roa, K, & Fors Mountain, K (2000), Review of Hababka Kala korontada, Part 2: Tixgelinta la taaban karo, macdanta & Processing qodniinka-, vol. 17, no. 1 pp 139-166.
4. Ralston O. (1961) Kala Electrostatic ee adkaha Granular Mixed, Elsevier Publishing Company, out of print.
5. Kogel, Jessica Elzea; Trivedi, Nikhil C; Barker, James M; Krukowski, Stanley T.; Industrial Macdanta iyo Dhagaxyada: badeecooyin, suuqyada, iyo Isticmaalo Edition 7aad, (2006), Page 237.
