"Guardian" yesimbi dzinokosha: Nei Dithiophosphates (Black Agents) Inoshandiswa Zvakawanda Mukugadzira Mineral Flotation

Mumiti inoyerera, xanthates dzinozivikanwa zvakanyanya sevanhu vane simba rekuunganidza zvinhu vane hunyanzvi hwakasimba hwekuunganidza. Zvisinei, kuti vawedzere kudzoreredza goridhe nesirivha kana kuparadzanisa lead kubva kuzinc, nyanzvi dzesimbi dzine ruzivo dzinowanzo kurudzira dithiophosphates, dzinowanzo zivikanwa se "black agents" nekuda kwechitarisiko chadzo chakasviba, chinowanzo sviba chemvura. Pasinei nechitarisiko chadzo chisingashamisi, ma reagents aya ane mabhenefiti akasiyana pakurapa simbi dzinokosha uye sulfide ores dzakaoma.

I. Chii chinonzi Dithiophosphates (Zvinhu Zvitema)?

Dithiophosphates iboka remakemikoro ane chekuita ne xanthates. Kunyange hazvo xanthates dzakasimba, dzisingasarudze dzinowanzo sanganisa iron sulfides (pyrite), dithiophosphates dzinosarudza zvakanyanya. Dzinogadzikanawo zvakanyanya pamakemikari uye hadzikurumidzi kuora.

II. Zvakanakira Zvikuru

1. Kubatana Kushoma kwePyrite: Iyi ibhenefiti huru yekuparadzanisa lead kana copper sulfides kubva kupyrite. Xanthates dzinowanzo famba nepyrite, nepo dithiophosphates dzichiratidza kugona kushoma kuunganidza pyrite, zvichiita kuti kuparadzaniswa kuve nyore.
2. Kukwanisa Kwakasimba Kwekuunganidza Goridhe neSirivheri: Dithiophosphates dzinoumba hukama hwakasimba hwemakemikari nesimbi inokosha, zvichiita kuti dzishande zvakanaka pakuwana goridhe, sirivha, neplatinum. Mafekitori mazhinji ekugadzira goridhe anowedzera dithiophosphates (semuenzaniso, Aero 238 kana ammonium dibutyl dithiophosphate) mumaseketi ekuchenesa kana ekuchenesa kuti simbi inokosha iwanezve.
3. Hunhu hweFrothing: Ma dithiophosphates mazhinji (semuenzaniso, Aero 238) ane kugona kweFrothing, zvichideredza kana kubvisa kudiwa kwekuwedzera frothing (senge MIBC kana mafuta emupaini). Froth inogadzirwa inowanzo pfava uye inopwanyika nyore nyore.

III. Mhando Dzakajairika

• Aero 238 (Alkyl Dithiophosphate): Rudzi rwemvura rwakajairika rune hunhu hwekuunganidza uye hwekuita furo. Rwakakodzera kupatsanurwa kwe lead-zinc uye kudzoreredzwa kwemhangura-goridhe. Rune hwema hwakasimba uye hunhu hwekupisa.
• Ammonium Dibutyl Dithiophosphate: Inowanikwa sehupfu huchena (pasinei nezita rekuti "chinhu chitema"). Haiparadzi, inonhuhwirira zvishoma, inonyungudika mumvura. Yakakodzera simbi dzine sirivha uye simbi dzemhangura dzisingagadzike, kunyanya kana zvinhu zvakatikomberedza zvichinyanya kukosheswa.
• Diphenyl Dithiophosphate: Isingawanzoitiki, ine kugona kwakasimba kwekuunganidza. Inoshandiswa pakugadzira galena ine oxidized kana fine-grained refractory galena.

IV. Zvaunofanira Kufunga Nezvekushanda

• Njodzi yeKuora: Dithiophosphates dzemvura (semuenzaniso, Aero 238) dzine acidic uye dzinoparadza. Shandisa zvinhu zvisingapindi acid pakuisa mishonga. Vashandi vanofanira kupfeka PPE yakakodzera.
• Dzivisa Kunwa Dose Yakawandisa: Kunwa dose yakawandisa kunogona kukonzera furo rakawandisa, zvichikonzera kuti ropa ribude mumasero anoyangarara. Gadzirisa dose nokungwarira, kunyanya kana furo iri kushandiswawo.
• Kinetics Inononoka: Dithiophosphates inoshanda zvishoma nezvishoma kupfuura xanthates uye inowanzoda nguva yakareba yekugadziriswa kuti ishande zvakanaka.

V. Mhedziso

Mumazuva ano ekushandiswa kwemvura inoyerera, dithiophosphates haisi nzvimbo ye xanthates asi kuti iwedzere kushandiswa. Nzira yakajairika ndeyekushandisa xanthates kuti idzore huwandu hwezvinhu zvakasanganiswa mu rougher flotation uye dithiophosphates kuti zvive zvakachena kuti zviwedzere kusarudzwa uye kudzoreredza simbi dzinokosha.