Dry Triboelectrostatic Beneficiation na Ma'adinai Sands

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Dry Triboelectrostatic Beneficiation na Ma'adinai Sands

A.Gupta, K. Flynn da kuma F. Hrach
ST Boats & Technology, 101 Hampton Avenue, Needham, MA 02494, USA

 

Tsokaci

ST Boats & Technology (STET) ne developer da manufacturer na triboelectrostatic bel rabuwa tsarin da yake bayar da da ma'adanai masana'antu wani bayani beneficiate lafiya ma'adinai ores ta yin amfani da bushe fasahar. A triboelectrostatic bel rabuwa fasahar da aka yi amfani da kudi, su raba wani m kewayon ma'adanai ciki har da calcite / ma'adini, talc / magnesite, barite / ma'adini, kuma aluminosilicates / carbon a gardama ash. A high dace Multi-jihar rabuwa cimma by barbashi don barbashi caji sakamakon a m rabuwa kamar yadda idan aka kwatanta da na al'ada free-fall triboelectrostatic SEPARATOR. Yana da wani bushe fasaha da kuma ba ya bukatar yin amfani da tsabtace muhalli m sunadarai da ruwa, Saboda haka babu sharar gida da ruwa jiyya tsarin da ake bukata a cikin tsari. A wannan rahoto, sakamakon wani cin nasara matukin jirgi shuka sikelin beneficiation gwajin gudanar a cakuda zircon / rutile ma'adinai a Sands aka buga.

keywords: ma'adanai, bushe rabuwa, triboelectrostatic caji, bel SEPARATOR, ma'adinai Sands, zircon, rutile

Gabatarwa

STET triboelectrostatic SEPARATOR utilizes bambance-bambance a cikin farfajiya sunadarai tsakanin barbashi da abinci abu don ƙirƙirar lantarki cajin bambance-bambance. Lokacin da biyu jũna saman ake shafa da juna, cajin canja wurin daukan wuri da kayan da ƙananan electron dangantaka rasa electrons da kayan da hakan electron dangantaka haka caji tabbatacce kuma korau bi da bi.

A STET triboelectrostatic bel SEPARATOR, feed abu ne ciyar a cikin wani bakin ciki rata tsakanin biyu a layi daya da wayoyin. Akwai wani bude-raga bel motsi tsakanin wayoyin a high gudu, upto 65 feet / sec, ulla wani madauki a kusa da wani sa na rollers a ranar biyu na ƙyallen maƙalawa (Figure 1). A barbashi an triboelectrically cajin da ƙwazo barbashi don barbashi lamba kuma suna janyo hankalin zuwa oppositely cajin wayoyin. A bel suka kai samame da wayoyin da daukawa daban-daban barbashi don m iyakar da SEPARATOR. A counter halin yanzu kwarara daga cikin raba barbashi kuma riƙa triboelectric caji da barbashi don barbashi collisions azurta wani Multi-mataki bushe beneficiation tsari. A SEPARATOR zane ne in mun gwada da sauki kuma m. A overall tsawon kimanin ne. 30 ft (9 m) da nisa 5 ft (1.5 m) ga wani cikakken size kasuwanci naúrar.

STET kula da bincike da ci gaban dakin gwaje-gwaje a STET fasaha cibiyar a Needham, Massachusetts. Wannan makaman ya hada da STET matukin jirgi shuka da kuma sunadarai awon, kazalika da zane, masana'antu da kuma goyon bayan sana'a sassan for STET ta kasuwanci ci gaba da kuma masana'antu da wuraren. A matukin jirgi shuka gidaje biyu da rage yawan sikelin, STET separators tare da ancillary kayan aiki amfani da su gudanar da bincike gyare-gyare na STET tsari da kuma kimanta rabuwar gardama ash da kuma ma'adanai daga takarar kafofin.

Figure 1: STET triboelectrostatic SEPARATOR Schematic

ma'adinai Sands
A mineralogy na rutile kãfirta samfurin da aka kimanin 41% rutile, 33% zircon, 18% ilmenite da kuma 8% wasu ma'adanai. A haƙiƙa ya kafa sarrafa yanayin warke zircon daga rutile kãfirta samfurin. STET gudanar da sinadaran bincike ta amfani da zango dispersive X-Ray haske (WD-XRF) a kan abinci samfurin da kuma sakamakon (bisa al'ada domin Loi) aka nuna a tebur 1.

Table 1: Elemental bincike na ma'adinai Sands samfurin (babbar aka gyara aka nuna)

Al'ada hanyoyin domin beneficiating ma'adinai Sands unsa rikitarwa kwarara zanen gado ta amfani da matakai kamar rigar nauyi dabaru, Magnetic da rabuwa da kuma froth flotation (.Ya ce. 1,2) wanda suna da nasu gazawa. Magnetic rabuwa aiwatar sau da yawa take kaiwa zuwa wani matsakaicin sulusi da murabba'i wanda bukatar ko dai dashi ko sake amfani da baya ga feed rafi. Magnetic rabuwa ta amfani da rollers da sauran gazawar a cikin aiki tarar. The lafiya barbashi, ko da ba-Magnetic fannonin da nunawa coatings a kan abin nadi, Rendering rabuwa aiwatar m. STET SEPARATOR yana da kyau dace domin rabuwa da lafiya sosai kayan da sosai high throughputs. Rigar nauyi da kuma froth flotation matakai shafi nauyi rigar sinadaran da ruwa amfani, da kuma bukatar sharar gida da ruwa jiyya tsari. Domin bushe karshe aikace-aikace, wani bushewa mataki ya za a kara nisa da tushe na beneficiation mataki game da shi kara aiki halin kaka.
STET ta triboelectrostatic fasahar samar da wani musamman damar aiwatar da abinci bushe, tare da low wutar lantarki amfani, yawanci kimanin. 1 kWh / ton (.Ya ce. 3) da ya haifar da biyu kyautata qarqashinsu a kan ko dai ƙarshen SEPARATOR ba tare da wani matsakaicin sulusi da murabba'i.

results

STET nuna shaidar tasiri caji da kuma rabuwa na zircon da rutile ma'adinai barbashi. Yana da aka gani cewa doping da abinci tama da kananan yawa na aromatic ko aliphatic carboxylic acid (electrostatic cajin motsa jiki jamiái) nuna gagarumin ci gaba a cikin rabuwa hali. Figure 2 kasa nuna samfurin sa (ZrO2 ciki auna yin amfani da WD-XRF) kuma ZrO2 dawo zuwa samfurin ga duk runs gudanar a STET matukin jirgi shuka. Ana iya gani cewa a karkashin gyara yanayin da abinci doped da aromatic carboxylic acid a 2000 GM / ton sashi da kuma danshi, samfurin maki na >50% ZrO2 abun ciki da >50% ZrO2 dawo zuwa samfurin da aka cimma (ga alama data). Average ZrO2 abun ciki don feed ya kimanin. 30%.

Figure 3 nuna by-samfurin sa (TiO2 ciki auna yin amfani da WD-XRF) kuma TiO2 dawo zuwa ta-samfurin ga duk runs gudanar a STET matukin jirgi shuka. Ana iya gani cewa a karkashin gyara yanayin da abinci doped da aromatic carboxylic acid da kuma danshi, by-samfurin maki na >50% TiO2 abun ciki da >80% TiO2 dawo zuwa ta-samfurin da aka cimma (ganin data alama). Average TiO2 abun ciki don feed ya kimanin. 40%.

Table 2 kasa nuna sakamakon daga runs gudanar karkashin gyara yanayin. STET ya iya cimma >50% ZrO2 abun ciki a cikin samfurin tare da ingantattun zircon ciki beneficiating wani abinci tare da talakawan 30% ZrO2 abun ciki. A rutile sulusi da murabba'i na abinci da aka tattara kamar yadda ta-samfurin, tare da >50% TiO2 ciki beneficiating wani abinci tare da talakawan TiO2 ciki kimanin. 40%. Future aiki zai mayar da hankali a kan optimizing rabuwa da sakamakon da rage sashi na cajin motsa jiki jamiái.

Figure 2: samfurin sa (ZrO2 abun ciki) v / s dawo da (guda izinin sakamakon)

Figure 3: By-samfurin sa (TiO2 abun ciki) v / s dawo da (guda izinin sakamakon)

Table 2: Sakamakon cimma a karkashin mafi kyau duka aiki sigogi yin amfani da "rutile kãfirta" feed

Kammalawa

Yana da aka samu nasarar nuna cewa STET triboelectrostatic bel SEPARATOR ne iya yadda ya kamata beneficiating da zircon / rutile cakuda dauke da ma'adinai Sands ciyar, game da shi, da cimma kyautata zircon da rutile abun ciki a cikin samfurin da kuma da-samfurin bi da bi. Wannan dabara samar da wani kudin-tasiri, mai yiwuwa madadin kuma zai iya yiwu kashe rigar aiki dabaru. Yana ba ya bukatar yin amfani da tsabtace muhalli m sunadarai ko ruwa, kuma haka ba ya bukatar bushewa na karshe abu. A kuzari ga STET SEPARATOR ne low, kimanin. 1 kWh / ton na sarrafa abinci abu.

References

1. R.M. Tyler da R.C.A. Minnitt. A review na yankin Saharar nauyi ma'adinai Sands ajiya: abubuwan da sabon ayyukan a kudancin Afrika. The Journal of The Afrika ta Kudu Cibiyar Mining da kuma Metallurgy, 89-100, Maris 2004.
2. V.G.K. Murty, D. Hriathod, S. Asokan kuma A. Chatterjee. Beneficiation na India Tã Ma'adinai Sands - Wasu New Yiwuwa Gano ta Tata Karfe. Aikace-aikace na kasa da kasa Taro kan Ma'adinai Processing Technology, 2006.
3. J.D. Bittner, IC. Flynn da kuma F.J. Hrach, Fadada Aikace-aikace a Dry Tribolectric Rabuwa da ma'adanai. Aikace-aikace na kasa da kasa Ma'adinai Processing Congress, 2014.