KR102802432B1 - 블랙 매스로부터 금속을 회수하기 위한 방법 및 설비 - Google Patents
블랙 매스로부터 금속을 회수하기 위한 방법 및 설비 Download PDFInfo
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Abstract
Li을 함유한 블랙 매스를 제공하는 단계 (a);
블랙 매스에 물을 첨가하여, 물에 블랙 매스의 현탁액을 생성하는 단계 (b);
현탁액을 교반하면서, 현탁액에 산화제로서 오존을 투입하는 단계 (c);
블랙 매스의 Li 고갈된 잔류물로부터 물에 용해된 LiOH를 함유한 여과액을 여과시키고 분리시키는 단계 (d);
를 포함한다.
Description
도 1은 pH 값에 따른 Li, Ni, Co 및 Mn의 추출률 EE(%)이고;
도 2는 시간(분)에 따른 Li, Ni, Co 및 Mn의 용액 농도 SC(g/l)이고;
도 3은 pH 값에 따른 Ni의 회수율 Ni RE(%)이고;
도 4는 pH 값에 따른 인산리튬 침전 후의 리튬 용액 농도 Li SC(g/l)이다.
Claims (21)
- 블랙 매스(black mass)로부터 금속을 회수하기 위한 방법으로서, 상기 방법은 다음의 순서에 따른 다음의 단계:
- Li을 함유한 블랙 매스를 제공하는 단계 (a);
- 블랙 매스에 물을 첨가하여, 물에 블랙 매스의 현탁액을 생성하는 단계 (b);
- 현탁액(suspension)을 교반하면서, 현탁액에 산화제로서 오존을 투입하는(dosing) 단계 (c);
- 블랙 매스의 Li 고갈된 잔류물(Li depleted residue)로부터 물에 용해된 LiOH를 함유한 여과액(filtrate)을 여과시키고 분리시키는 단계 (d);
를 특징으로 하고, 여기서,
- 단계 (c)에서 현탁액이 현탁액 내에서 11000s-1 보다 큰 전단 속도(shear rate)로 교반되고,
- 단계 (d)의 Li 고갈된 잔류물이 산성 침출 단계 (e)에서 침출되며, 여기서 적어도 하나의 산 및 재순환된 산 중 적어도 하나가 첨가되고, pH 값이 pH 3 아래로 낮춰지며,
- 칼슘 소스를 단계 (e)의 침출액(leachate) 및 현탁액 중 적어도 하나에 첨가하고, 단계 (f)에서 현탁액을 여과시키고,
- 단계 (g)에서 교반하면서 단계 (f)의 여과액에 산화제로서 오존을 투입하고, pH 값을 2 내지 4의 범위로 유지하고, 얻어진 현탁액을 여과시키는 것인, 방법. - 청구항 1에 있어서,
- 단계 (c)에서 현탁액이 현탁액 내에서 25000s-1 보다 큰 전단 속도로 교반되는 것을 특징으로 하는, 방법. - 청구항 1 또는 청구항 2에 있어서,
- 단계 (c)가 적어도 3시간 동안 수행되는 것을 특징으로 하는, 방법. - 청구항 1 또는 청구항 2에 있어서,
- 단계 (c)에서 오존은 0.1 그램(O3)/시간/그램(블랙 매스) 이상의 속도로 그리고/또는 2 그램(O3)/시간/그램(블랙 매스) 이하의 속도로 현탁액에 투입되는 것을 특징으로 하는, 방법. - 청구항 1 또는 청구항 2에 있어서,
- 단계 (c)에서 현탁액의 온도가 70℃ 내지 95℃의 범위인 것을 특징으로 하는, 방법. - 청구항 1 또는 청구항 2에 있어서,
- 단계 (c)에서 물에서의 블랙 매스의 현탁액이 6 내지 8 범위의 pH 값을 갖는 것을 특징으로 하는, 방법. - 청구항 1 또는 청구항 2에 있어서,
- 단계 (b) 및 단계 (c) 중 적어도 하나에서 현탁액에 산을 첨가하고, 현탁액의 pH 값을 3.5 내지 4.5 범위의 pH 값으로 낮추는(dropping) 단계를 특징으로 하는, 방법. - 청구항 7에 있어서,
- 단계 (c) 이후에 가성제(caustic)를 첨가하는 단계; 및
- 단계 (d) 이전에 현탁액의 pH 값을 높이거나 또는 단계 (d)의 여과액의 pH 값을 6 보다 높은 pH 값으로 높이는 단계를 특징으로 하는, 방법. - 청구항 1 또는 청구항 2에 있어서,
- 물에 용해된 LiOH를 함유한 여과액의 적어도 20 부피%를 증발시키는 단계를 특징으로 하는, 방법. - 청구항 1 또는 청구항 2에 있어서,
- 증발 및 결정화에 의해, 물에 용해된 LiOH를 함유한 여과액으로부터 수산화리튬(LiOH)을 침전시키는 단계를 특징으로 하는, 방법. - 청구항 1 또는 청구항 2에 있어서,
- 물에 용해된 LiOH를 함유한 여과액에 다음의 첨가제들:
- 인산염 소스(phosphate source); 및
- 탄산염 소스(carbonate source)
중 적어도 하나를 첨가하고,
- 인산염 소스를 첨가하는 경우에는 인산리튬(Li3PO4)을 침전시키고;
- 탄산염 소스를 첨가하는 경우에는 탄산리튬(Li2CO3)을 침전시키는 것을 특징으로 하는, 방법. - 청구항 10에 있어서,
- 가성제를 물에 용해된 LiOH를 함유한 여과액에 첨가하는 것을 특징으로 하는, 방법. - 청구항 10에 있어서,
- 침전된 수산화리튬(LiOH)을 여과시키고, 단계 (b) 및 단계 (c) 중 적어도 하나에서 여과액을 블랙 매스와 물의 현탁액으로 다시 재순환시키는 것을 특징으로 하는, 방법. - 청구항 11에 있어서,
- 침전된 인산리튬(Li3PO4) 및 탄산리튬(Li2CO3) 중 적어도 하나를 여과시키고, 단계 (b) 및 단계 (c) 중 적어도 하나에서 여과액을 블랙 매스와 물의 현탁액으로 다시 재순환시키는 것을 특징으로 하는, 방법. - 청구항 13에 있어서,
- 재순환된 여과액을 주기적으로 유출시키는(bleeding) 것을 특징으로 하는, 방법. - 청구항 1 또는 청구항 2에 있어서,
- 적어도 하나의 산이 황산(H2SO4)인 것을 특징으로 하는, 방법. - 청구항 1에 있어서,
- 환원제를 산성 침출 단계 (e)에 첨가하는 것을 특징으로 하는, 방법. - 청구항 1 또는 청구항 17에 있어서,
- 칼슘 소스는 수산화칼슘(Ca(OH)2) 및 산화칼슘(CaO) 및 탄산칼슘(CaCO3) 중 적어도 하나인 것을 특징으로 하는, 방법. - 청구항 1 또는 청구항 17에 있어서,
- 단계 (h)에서 황산(H2SO4)을 단계 (g)의 여과액에 첨가하는 것; 그리고
- 황산(H2SO4) 농도를 적어도 500g/l로 높여, Ni-황산염을 결정화시키는 것을 특징으로 하는, 방법. - 삭제
- 삭제
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| DE102021123151.5 | 2021-09-07 | ||
| DE102021123151.5A DE102021123151A1 (de) | 2021-09-07 | 2021-09-07 | Verfahren und Anlage zur Rückgewinnung von Metallen aus schwarzer Masse |
| PCT/EP2022/074579 WO2023036726A1 (de) | 2021-09-07 | 2022-09-05 | Verfahren und anlage zur rückgewinnung von metallen aus schwarzer masse |
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| CN116802886A (zh) | 2022-01-17 | 2023-09-22 | 绿狮私人有限公司 | 用于回收利用磷酸铁锂电池的方法 |
| AU2023223959B2 (en) | 2022-02-23 | 2025-04-03 | Green Li-Ion Pte. Ltd | Processes and systems for purifying and recycling lithium-ion battery waste streams |
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| WO2020212587A1 (en) * | 2019-04-19 | 2020-10-22 | Umicore | Process for the preparation of battery precursors |
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| PT4225697T (pt) | 2023-11-30 |
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| EP4225697B9 (de) | 2023-12-20 |
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| EP4225697B1 (de) | 2023-09-27 |
| MA65154A1 (fr) | 2025-05-30 |
| RS64856B1 (sr) | 2023-12-29 |
| US12209028B2 (en) | 2025-01-28 |
| FI4225697T3 (en) | 2023-11-27 |
| EP4225697A1 (de) | 2023-08-16 |
| JP2024533154A (ja) | 2024-09-12 |
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