7n seciturium crystal kev loj hlob thiab ua kom huv

7n seciturium crystal kev loj hlob thiab ua kom huv

Kuv. Cov Khoom Siv Raw Ua Ntej Pretreatment thiab Preliminary Purification

1. ‌Cov Khoom Siv Raw thiab Crushing‌

• ‌Cov Khoom Siv Yuav Tsum Tau: Siv cov ore los yog anode slime (Te cov ntsiab lus ≥%), nyiam dua tooj liab smelting anode (muaj cu₂te, cu₂se) li cov khoom siv raw.
• ‌Txheej txheem pretreplicment:
• Ntxhib pleb mus rau particle loj ≤5MM, ua raws li los ntawm pob milling rau ≤200 mesh;
• Sib cav sib cais (sib nqus teb siv ≥0.8T) kom tshem tawm FE, NI, thiab lwm yam kev sib nqus;
• Froth flotation (Ph = 8-9, Xanthaate sau) kom cais sio₂, uo, thiab lwm yam tsis loj.
• ‌Cov kev ceev faj: Zam tsis txhob ya raws thaum lub sij hawm ntub pretreatment (yuav tsum ziab ua ntej ci); Tswj cov av noo ≤30%.

1. ‌Pyrometallurgical Ci thiab Oxidation‌

• ‌Txheej txheem tsis:
• Oxidation ci kub: 350-600 ° C (Staged tswj: Tsawg rau qhov kub thiab txias rau oxidation);
• Lub sijhawm ci ntsa iab: 6-8 teev, nrog O₂ ntws tsawg ntawm 5-10 L / min;
• Reagent: concentrated sulfuric acid (98% hatso₄), huab hwm coj te ₂₂₄ = 1: 1.5.
• ‌Tshuaj Lom Zem:
  Cu2te + 2o2 + 2h2So4 → 2Cuso4 + teo2 + 2H2 + 2h2 → 2Cuso4 + Teo2 + 2h2 o
• ‌Cov kev ceev faj: Tswj ntsuas kub ntawm ≤600 ° C txhawm rau tiv thaiv Teo₂ Volatilization (boiling point 387 ° C); Kho cov pa roj nrog Naoh Scrubbers.

Ii. Hluav Taws Xob Hluav Taws Xob Thiab Nqus Distillation

1. ‌Hluav Taws Xob‌

• ‌Kev Ntsuas Electrolyte:
• Electrolyte Composition: Hatso₄ (80-120G / L), Teo₂ (40-60G / L), Ntxiv (Gelatin 0.1- L);
• Tswj kub: 30-40 ° C, Kev Yaum Flow tus nqi 1.5-2 m³ / h.
• ‌Txheej txheem tsis:
• Qhov ceev tam sim no: 100-150 A / M², cell voltage 0.2-0.4V;
• Electrode kev sib txuas: 80-120mm, Cathode Depositionickness 2-3mm / 8H;
• Kev tawm tsam kev raug tshem tawm tau efficiency: cu ≤5ppm, pb ≤1PPM.
• ‌Cov kev ceev faj: Tsis tu ncua lim electrolyte (qhov tseeb ≤1μm); Cov cuab yeej polish anode los tiv thaiv passivation.

1. ‌Nqus tsev‌

• ‌Txheej txheem tsis:
• Lub nqus tsev theem: ≤1 × 10⁻²pa, distillation kub 600-650 ° C;
• Condenser cheeb tsam ntsuas kub: 200-250 ° C, Te vapor condensation efficiency ≥95%;
• Lub sijhawm distillation: 8-12h, ib leeg-batch peev xwm ≤50kg.
• ‌Raug cai faib: Tsawg-npau npau impurities (se, s) accument ntawm condenser pem hauv ntej; High-npau npau impurities (PB, AG) nyob twj ywm hauv cov seem.
• ‌Cov kev ceev faj: Pre-nqus nqus nqus nqus system mus rau ≤5 × 10, as 10, as 10,hb ua ntej kom tiv thaiv cov roj.

III. Crystal Kev Loj Hlob (Kev Taw Qhia Crystallization)

1. ‌Cov Khoom Taw Qhia‌

• ‌Crystal Kev Loj Hlob Cub Ua Qauv: TDR-70A / B (30KG muaj peev xwm) lossis TRDL-800 (60KG muaj peev xwm);
• Cov Khoom Crucible: Cov Khoom Loj-Thaj Yeeb (cov ntoo tshauv ≤5ppm), qhov ntev φ300 × 400 hli;
• Kev Ua Si Cua Sov: Graphite ua hauj cua sov, ntau tshaj kub 1200 ° C.

1. ‌Txheej txheem tsis‌

• ‌Yaj tswj:
• Melting kub: 500-20 ° C, melt pas dej tob 80-120mm;
• Cov Roj Tiv Thaiv: AR (Purity ≥99.999%), ntws tus nqi 10-15 l / min.
• ‌Crystallization tsis:
• Rub tus nqi: 1-3mm / h, siv lead ua kev sib hloov ceev 8-12RPM;
• Kev ntsuas kub thiab txias: axial 30-50 ° C / CM, RADIAL ≤10 ° C / CM;
• Cua txias txoj kev: dej-txias tooj liab luj (dej kub 20-25 ° C), sab saum toj radiatorive txias.

1. ‌Cov Kws Koom Tes Tswj‌

• ‌Cais cov nyhuv: Impurities li fe, ni (Cegregation coefficiess <0.1) accumulate ntawm cov ciaj ciam nplej;
• ‌Rov Qab Los Tsheb: 3-5 voj voog, kawg tsis zoo ≤0.1PP.

1. ‌Cov kev ceev faj:

• Npog melt saum toj nrog graphite daim hlau mus rau suppress te volatilization (poob ntau ≤0.5%);
• Saib xyuas cov qhiav nyob rau hauv lub sij hawm tiag tiag siv laser gauges (qhov tseeb ± 0.1mm);
• Zam kev hloov pauv> ± 2 ° C los tiv thaiv kev tshem tawm kev cuam tshuam nce ntxiv (phiaj rau hauv).

IV. Kev Soj Ntsuam Zoo thiab Cov Ntsuas Tseem Ceeb

V. Environmental thiab Kev Nyab Xeeb Kev Nyab Xeeb

1. ‌Tso kom muaj pa roj:

• Qhob tso roasting ci: Neutralize so thiab sawv nrog Naoh Scrubbers (PT≥10);
• Nqus Structillation tso tawm: Condense thiab rov qab Te Vapor; Residual Gases Adsorbed ntawm cov carbon ua haujlwm.

1. ‌Slag rov ua dua tshiab:

• Anode slime (muaj ag, au): rov qab los ntawm hydrometallurgurgy (h ₂so₄-hcl system);
• ECTROLANYGE (muaj PB, CU): rov qab mus rau tooj liab smilting tshuab.

1. ‌Kev Nyab Xeeb Kev Nyab Xeeb:

• Cov neeg ua haujlwm yuav tsum hnav cov ncauj qhov ntswg (te vapor yog tshuaj lom); Cia kom muaj kev ntxhov siab tsis zoo nyob hauv qhov cua (cua sib pauv tus nqi ≥10 toj siab / h).

Txheej txheem Optimization Kev Cai Ua Kom Zoo

1. ‌Raw Khoom Siv Yum: Kho ci kub thiab acid piv qha dynamically raws li anime sime cov chaw (piv txwv li tooj, tooj liab thiab cov khoom noj smelting);
2. ‌Crystal rub tawm cov nqi sib tw: Kho kom hloov ceev raws li yaj convection (reenolds tus lej rov ≥2000) los ua kom tsis txhob raug cai saib xyuas cov cai supercoor.
3. ‌Zog Efficiency: Siv cov cua kub dual-kub) (thaj chaw loj 500 ° C, Sub-Cheeb Tsam 400 ° C) los txo cov graphite kuj siv hluav taws xob tau noj los ntawm 30%.