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A.Gupta, K. Flynn ndi F. Hrach
cha ku Switzerland Zida & Technology, 101 nyumba ya Hampton Avenue, Needham, MA 02494, USA
Mkota
cha ku Switzerland Zida & Technology (STET) ndi mapulogalamu ndi Mlengi wa triboelectrostatic lamba dongosolo kulekana kuti amatipatsa mchere makampani njira yothetsera beneficiate chabwino mchere ores pogwiritsa ntchito luso youma. The triboelectrostatic luso lamba kulekana lakhala likugwiritsidwa ntchito malonda kupatukana osiyanasiyana mchere kuphatikizapo calcite / khwatsi, talc / magnesite, barite / khwatsi, ndipo aluminosilicates / mpweya mu ntchentche phulusa. Mkulu Mwachangu Mipikisano boma kulekana zimatheka ndi tinthu kuti tinthu nawuza zotsatira kupatukana kuposa poyerekeza ochiritsira chatsika triboelectrostatic olekanitsa. Ndi luso youma ndi sikutanthauza kugwiritsa ntchito mankhwala zachilengedwe tcheru ndi madzi, choncho palibe machitidwe madzi mankhwala zinyalala zifunika mu ndondomeko. Mu lipoti ili, zotsatira za bwino woyendetsa chomera lonse beneficiation mayeso imachitika pa osakaniza zircon / rutile mu michenga mchere ndi ofalitsidwa.
Keywords: mchere, kulekana youma, triboelectrostatic adzapereke, lamba olekanitsa, mchenga mchere, zircon, rutile
Chiyambi
STET triboelectrostatic olekanitsa yagwiritsa ntchito kusiyana umagwirira pamwamba pakati pa particles nkhani chakudya kulenga kusiyana magetsi mlandu. Pamene awiri pamalo yosiyana ndi kuzitikita ndi mnzake, kuyang'anira kutengerapo chikuchitika ndi chuma ndi m'munsi elekitironi kuyandikana kutaya ma elekitironi zinthu ndi apamwamba elekitironi kuyandikana Choncho nawuza zabwino ndi zoipa ankalemekeza.
Mu STET triboelectrostatic lamba olekanitsa, zakuthupi chakudya zimalowa kusiyana woonda pakati maelekitirodi awiri kufanana. Pali lotseguka-mauna lamba ikuyenda pakati maelekitirodi pa mathamangidwe mkulu, upto 65 mapazi / gawo, kupanga kuzungulira padziko ya odzigudubuza pa malekezero onse (chithunzi 1). particles ndi triboelectrically mlandu ndi tinthu mwakhama kuti tinthu kukhudzana ndi amakopeka ndi oppositely maelekitirodi mlandu. Lamba chikusesa maelekitirodi ndi amanyamula particles zosiyana malekezero wosiyana olekanitsa ndi. Kauntala panopa otaya kulekanitsa tinthu ndi zonse triboelectric adzapereke ndi tinthu kuti mwansanga tinthu amapereka kwa Mipikisano gawo youma beneficiation ndondomeko. Kamangidwe olekanitsa ndi osavuta ndi yaying'ono. Kutalika ndi pafupifupi. 30 Ft (9 mamita) ndipo m'lifupi 5 Ft (1.5 mamita) kwa chachikulu wagawo malonda.
STET kupitiriza kafukufuku zasayansi pa malo STET luso mu Needham, Massachusetts. malo Izi zikuphatikizapo STET woyendetsa zomera ndi umagwirira zasayansi, komanso kamangidwe, kupanga ndi luso thandizo m'madipatimenti chitukuko malonda ndi kupanga zipangizo STET a. Woyendetsa chomera m'nyumba awiri wotsikirapo lonse, separators STET pamodzi ndi zida ancillary ntchito kufufuza zosintha za ndondomeko STET ndi kuonanso kulekana kwa ntchentche phulusa ndi mchere ku magwero phungu.
chithunzi 1: STET triboelectrostatic olekanitsa zojambula
Maminolo mchenga
The mineralogy wa rutile kukana chitsanzo anali pafupifupi 41% rutile, 33% zircon, 18% ilmenite ndi 8% mchere. Cholinga chinali kukhazikitsa processing zinthu kuchira zircon ku rutile kukana chitsanzo. STET imachitika kusanthula mankhwala ntchito timaganiza dispersive X-Ray kuwala (WD-XRF) pa chakudya nyemba ndi zotsatira (dekhetsa kwa LOI) amaoneka mu tebulo 1.
Table 1: Elemental kusanthula mchere mchenga chitsanzo (zigawo zikuluzikulu wasonyeza)
njira ochiritsira kwa beneficiating mchenga mchere kumafuna mapepala zovuta otaya ntchito njira monga njira yonyowa yokoka, maginito kupatukana ndi froth flotation (ref. 1,2) zomwe sangachite awo. Kampasi kupatukana ndondomeko zambiri kumayambitsa nusu middling omwe amafunika kapena kutaya kapena yobwezeretsanso ku chakudya mtsinje. Maginito kulekana ntchito odzigudubuza ndi mavuto ena mu ndalama processing. The particles chabwino, ngakhale sanali maginito amakonda kupanga zokutira pa wodzigudubuza ndi, kuguwa ndondomeko kulekana osamveka. STET olekanitsa bwino yosayenera kulekana kwa zipangizo zabwino kwambiri ndi throughputs kwambiri. M'madzi yokoka ndi froth flotation njira kumafuna wolemera chonyowa mankhwala ndi ntchito madzi, ndipo amafuna zinyalala ndondomeko madzi mankhwala. Ntchito youma komaliza, ndi kuyanika sitepe ali kuti zidzawonjezedwa pambuyo pake wa beneficiation sitepe potero kuwonjezeka ndalama opaleshoni.
STET ndi luso triboelectrostatic amapereka mphamvu yapadera pokonza chakudya youma, ndi mowa otsika magetsi, amangoona pafupifupi. 1 kWh / tani (ref. 3) ndipo amapanga awiri akweza mitsinje pa kapena mapeto a olekanitsa ndi palibe kachigawo middling.
zotsatira
STET anasonyeza umboni wa adzapereke ogwira ndi kulekana kwa zircon ndi rutile particles mchere. Zinaoneka kuti doping chakudya miyala ndi zedi ka zidulo onunkhira kapena aliphatic carboxylic (electrostatic wothandizila mlandu zowongolera) anasonyeza kusintha kwambiri khalidwe kulekana. chithunzi 2 m'munsimu limasonyeza mankhwala kalasi (ZrO2 zili anayeza ntchito WD-XRF) ndipo ZrO2 kuchira kwa mankhwala kwa amathamanga onse imachitika pa STET woyendetsa chomera. Iwo Tingaone kuti atakumana wokometsedwa ndi chakudya doped ndi asidi onunkhira carboxylic pa 2000 mg / tani mlingo ndi chinyezi, mankhwala sukulu ya >50% ZrO2 zili ndi >50% ZrO2 kuchira kwa mankhwala anali akwaniritsa (onani deta anatsindika). Avereji ZrO2 zili chakudya chinali pafupifupi. 30%.
chithunzi 3 amasonyeza-mankhwala kalasi (TiO2 zili anayeza ntchito WD-XRF) ndi TiO2 kuchira kuti chochokera kwa amathamanga onse imachitika pa STET woyendetsa chomera. Iwo Tingaone kuti atakumana wokometsedwa ndi chakudya doped ndi asidi onunkhira carboxylic ndi chinyezi, chochokera sukulu ya >50% TiO2 zili ndi >80% TiO2 kuchira kuti chochokera anali akwaniritsa (onani deta anatsindika). Avereji TiO2 zili chakudya chinali pafupifupi. 40%.
Table 2 m'munsimu limasonyeza zotsatira kuchokera amathamanga imachitika m'mikhalidwe wokometsedwa. STET anatha kukwaniritsa >50% ZrO2 zili mu mankhwala ndi bwino zili zircon beneficiating chakudya ndi pafupifupi 30% ZrO2 okhutira. The rutile nusu ya chakudya anali asonkhanitsa chochokera, ndi >50% TiO2 zili beneficiating chakudya ndi pafupifupi TiO2 zili pafupifupi. 40%. ntchito ya m'tsogolo idzafotokoza optimizing zotsatira kulekana ndi kuchepetsa mlingo wa woyang'anira wothandizira zowongolera.
chithunzi 2: mankhwala kalasi (ZrO2 okhutira) ndime / s kuchira (Zotsatira chikudutsa single)
chithunzi 3: Chochokera kalasi (zili TiO2) ndime / s kuchira (Zotsatira chikudutsa single)
Table 2: Zotsatira zake pansi magawo mulingo woyenera processing ntchito "rutile kukana" chakudya
Kutsiliza
Iwo bwinobwino anasonyeza kuti STET triboelectrostatic lamba olekanitsa amatha bwino beneficiating ndi zircon / rutile osakaniza munali mchenga mchere kudyetsa, potero kukwaniritsa akweza zircon ndi rutile zili mu mankhwala ndi chochokera ankalemekeza. Njira imeneyi amapereka yosafuna, yotheka zina ndi angathe kuthetsa njira processing yonyowa. Izo sikutanthauza kugwiritsa ntchito mankhwala zachilengedwe tcheru kapena madzi chotero sikutanthauza kuyanika zakuthupi chomaliza. The mowa mphamvu kwa olekanitsa STET ndi otsika, pafupifupi. 1 kWh / matani chakudya chuma kukonzedwa.
Zothandizira
1. R.M. Tyler ndi R.C.A. Minnitt. A review ya kum'mwera kwa Sahara mchere katundu mchenga gawo: akukhudza ntchito yatsopano kum'mwera kwa Africa. The Journal of The Institute of Migodi ndi zitsulo South African, 89-100, March 2004.
2. V.G.K. Murty, D. Hriathod, S. Asokan ndi. Chatterjee. Beneficiation ya Indian kunagwa Maminolo Sands - Ena njira zatsopano Kuzindikiritsidwa ndi Tata Zitsulo. Zokambirana za Mayiko Msonkhano pa Processing Maminolo Technology, 2006.
3. J.D. Bittner, IC. Flynn ndi F.J. Hrach, Anatsegula Mapulogalamu mu kuuma Tribolectric Kupatukana ya Mchere. Kuthi Mayiko Maminolo Processing Congress, 2014.
