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v3.25.1

Financial risk management (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes and other explanatory information [abstract] |
Schedule of sensitivity analysis risk factors affecting price of financial instrument |
Schedule of sensitivity analysis risk factors affecting price of financial instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  | Impacts on income statement |  | Impacts on statement of comprehensive income
|  |  |  | Scenarios II and III |  | Scenarios II and III
Risk factor | Quotation at December 31, 2024 | Amount |  | Changes from 2024 | Scenario I | -25% | -50% | +25% | +50% |  | Scenario I | -25% | -50% | +25% | +50%
Cash and cash equivalents and financial investments |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange rates |  |  |  |  |  |  |  |  |  |  |  |  |  |
BRL | 6.1923 | 58,279 |  | 4.15% | - | - | - | - | - |  | 2,453 | (14,773) | (29,545) | 14,773 | 29,545
EUR | 1.0394 | 3,126 |  | 1.98% | 62 | (781) | (1,563) | 781 | 1,563 |  | - | - | - | - | -
PEN | 3.7611 | 34,444 |  | (2.31%) | (795) | (8,611) | (17,221) | 8,611 | 17,221 |  | - | - | - | - | -
CAD | 1.4390 | 694 |  | 1.70% | - | - | - | - | - |  | 12 | (174) | (347) | 174 | 347
NAD | 18.8730 | 1,593 |  | (7.93%) | - | - | - | - | - |  | (126) | (398) | (797) | 398 | 797
Interest rates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BRL - CDI - SELIC | 12.15% | 57,969 |  | 151 bps | 872 | (1,761) | (3,552) | 1,761 | 3,552 |  | - | - | - | - | -
Loans and financings |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange rates |  |  |  |  |  |  |  |  |  |  |  |  |  |
BRL | 6.1923 | 299,844 |  | 4.15% | - | - | - | - | - |  | (12,449) | 74,961 | 149,922 | (74,961) | (149,922)
Interest rates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BRL - CDI - SELIC | 12.15% | 121,318 |  | 151 bps | (1,826) | 3,685 | 7,370 | (3,685) | (7,370) |  | - | - | - | - | -
USD - SOFR | 4.30% | 236,978 |  | (13) bps | 304 | 2,545 | 5,090 | (2,545) | (5,090) |  | - | - | - | - | -
IPCA - TLP | 4.83% | 159,509 |  | 17 bps | (271) | 1,926 | 3,852 | (1,926) | (3,852) |  | - | - | - | - | -
TJLP | 7.97% | 19,018 |  | 54 bps | (103) | 379 | 758 | (379) | (758) |  | - | - | - | - | -
|  |  |  | 54 bps | (103) | 379 | 758 | (379) | (758) |  |  |  |  |  |
Other financial instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange rates |  |  |  |  |  |  |  |  |  |  |  |  |  |
BRL | 6.1923 | (168) |  | 4.15% | (7) | 42 | 84 | (42) | (84) |  | - | - | - | - | -
Interest rates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BRL - CDI - SELIC | 12.15% | (168) |  | 151 bps | (194) | 456 | 972 | (405) | (767) |  | - | - | - | - | -
USD - SOFR | 4.30% | 1,651 |  | (13) bps | - | 49 | 98 | (49) | (98) |  | (1) | (81) | (163) | 81 | 162
Commodities price |  |  |  |  |  |  |  |  |  |  |  |  |  |
Zinc | 2,974 | 1,651 |  | (4.17%) | 10,942 | 13,037 | 26,074 | (13,037) | (26,074) |  | (8,013) | (9,547) | (19,094) | 9,547 | 19,094
Schedule of foreign exchange effects |
Schedule of foreign exchange effects |  |
USD amounts of foreign currency balances | 2024 | 2023
Assets |  |
Cash, cash equivalents and financial investments | 98,067 | 105,802
Other Financial Instruments | 70 | 29
Trade accounts receivables | 19,553 | 19,885
Total Assets | 117,690 | 125,716
Liabilities |  |
Loans and financings | 297,199 | 279,341
Other Financial Instruments | 238 | 479
Trade payables | 190,806 | 227,687
Lease liabilities | 42,357 | 52,896
Use of public assets | 18,047 | 22,733
Total Liabilities | 548,647 | 583,136
Net exposure | (430,957) | (457,420)
Schedule of credit quality of financial assets |
Schedule of credit quality of financial assets |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | 2024 |  |  |  |  |  | 2023
|  | Local rating |  | Global rating |  | Total |  | Local rating |  | Global rating |  | Total
Cash and cash equivalents |  |  |  |  |  |  |  |  |  |
AAA |  | 251,962 |  | - |  | 251,962 |  | 189,582 |  | - |  | 189,582
AA+ |  | 1 |  | - |  | 1 |  | - |  | - |  | -
AA |  | - |  | 95,461 |  | 95,461 |  | 1 |  | - |  | 1
AA- |  | - |  | 18,714 |  | 18,714 |  | - |  | 46,317 |  | 46,317
A+ |  | - |  | 127,151 |  | 127,151 |  | - |  | 72,315 |  | 72,315
A |  | 8,265 |  | 24,749 |  | 33,014 |  | - |  | 66,342 |  | 66,342
A- |  | - |  | 61,935 |  | 61,935 |  | - |  | 70,155 |  | 70,155
BB+ |  | - |  | - |  | - |  | - |  | 1 |  | 1
No rating (i) |  | 11,899 |  | 20,400 |  | 32,299 |  | 76 |  | 12,470 |  | 12,546
|  | 272,127 |  | 348,410 |  | 620,537 |  | 189,659 |  | 267,600 |  | 457,259
Financial investments |  |  |  |  |  |  |  |  |  |
AAA |  | 19,638 |  | - |  | 19,638 |  | 10,994 |  | - |  | 10,994
No rating (i) |  | 55 |  | - |  | 55 |  | 64 |  | - |  | 64
|  | 19,693 |  | - |  | 19,693 |  | 11,058 |  | - |  | 11,058
Derivative financial instruments |  |  |  |  |  |  |  |  |  |
AAA |  | 71 |  | - |  | 71 |  | 29 |  | - |  | 29
A+ |  | - |  | 450 |  | 450 |  | - |  | 978 |  | 978
A |  | - |  | 842 |  | 842 |  | - |  | 53 |  | 53
A- |  | - |  | 3,919 |  | 3,919 |  | - |  | 6,667 |  | 6,667
BBB+ |  | - |  | - |  | - |  | - |  | 166 |  | 166
|  | 71 |  | 5,211 |  | 5,282 |  | 29 |  | 7,864 |  | 7,893
Other assets |  |  |  |  |  |  |  |  |  |  |  |
AAA |  | 883 |  | - |  | 883 |  | - |  | - |  | -
|  | 883 |  | - |  | 883 |  | - |  | - |  | -
(i) Refers to subsidiaries of international financial institutions that do not have a global rating available in the international rating agencies. According to the Company's policy, for these financial institutions, the rating of the financial institution controlling entities is assumed, which must be at least BBB-.
Schedule of liquidity risk |
Schedule of liquidity risk |  |  |  |  |  |
2024 |  | Less than 1 year | Between 1 and 3 years | Between 3 and 5 years | Over 5 years | Total
Loans and financings |  | 148,077 | 150,023 | 1,175,144 | 1,028,440 | 2,501,684
Lease liabilities |  | 29,882 | 37,755 | 6,121 | 12,299 | 86,057
Derivative financial instruments | 3,600 | 181 | 17 | - | 3,798
Trade payables |  | 443,288 | - | - | - | 443,288
Confirming payables |  | 268,175 | - | - | - | 268,175
Salaries and payroll charges |  | 70,235 | - | - | - | 70,235
Dividends payable |  | 3,707 | - | - | - | 3,707
Related parties |  | 1,125 | 3,079 | - | - | 4,204
Asset retirement and environmental obligations |  | 47,937 | 76,583 | 60,598 | 364,036 | 549,154
Use of public assets |  | 1,457 | 3,180 | 3,585 | 28,226 | 36,448
|  | 1,017,482 | 270,801 | 1,245,465 | 1,433,001 | 3,966,749
2023 |  | Less than 1 year | Between 1 and 3 years | Between 3 and 5 years | Over 5 years | Total
Loans and financings |  | 232,941 | 181,147 | 1,591,705 | 173,436 | 2,179,229
Lease liabilities |  | 29,227 | 49,480 | 16,845 | 14,306 | 109,858
Derivative financial instruments |  | 10,343 | 108 | 42 | - | 10,493
Trade payables |  | 451,603 | - | - | - | 451,603
Confirming payables |  | 234,385 | - | - | - | 234,385
Salaries and payroll charges |  | 68,165 | - | - | - | 68,165
Dividends payable |  | 2,830 | - | - | - | 2,830
Related parties |  | 1,062 | 2,873 | - | - | 3,935
Asset retirement and environmental obligations |  | 33,591 | 85,675 | 95,302 | 358,333 | 572,901
Use of public assets |  | 1,902 | 3,240 | 3,921 | 17,570 | 26,633
|  | 1,066,049 | 322,523 | 1,707,815 | 563,645 | 3,660,032
Schedule of leverage ratio |
Schedule of leverage ratio |  |  |  |  |  |
| Note | 2024 |  | 2023 |  | 2022
Loans and financings | 24 (a) | 1,762,633 |  | 1,725,566 |  | 1,669,259
Derivative financial instruments | 16 (a) | (1,484) |  | 2,600 |  | 2,575
Lease liabilities | 23 (b) | 95,899 |  | 77,405 |  | 27,205
Cash and cash equivalents | 15 | (620,537) |  | (457,259) |  | (497,826)
Financial investments |  | (19,693) |  | (11,058) |  | (18,062)
Net debt (i) |  | 1,216,818 |  | 1,337,254 |  | 1,183,151
Net (loss) income for the year |  | (187,407) |  | (291,810) |  | 76,988
Plus (less): |  |  |  |  |  |
Depreciation and amortization | 7 | 330,198 |  | 310,475 |  | 292,140
Share in the results of associates |  | (21,223) |  | (23,536) |  | (1,885)
Net financial results | 10 | 369,460 |  | 167,058 |  | 134,811
Income tax expense (benefit) | 11 (a) | 115,556 |  | (4,274) |  | 150,983
Miscellaneous adjustments | 2 | 107,496 |  | 248,128 |  | 110,168
Adjusted EBITDA (ii) |  | 714,080 |  | 406,041 |  | 763,205
Leverage ratio (Net debt/Adjusted EBITDA) |  | 1.70 |  | 3.29 |  | 1.55
(i) Net debt is defined as (a) loans and financings, plus lease liabilities, plus or minus (b) the fair value of derivative financial instruments, less (c) cash and cash equivalents, less (d) financial investments. (ii) Adjusted EBITDA for capital management calculation uses the same assumptions described in note 2 for Adjusted EBITDA by segment.

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