#zambia mining

[blogmassivewitchbouquetstuff]

the zambian copper series, part ten: the zambian refinery

the nkana copper refinery in kitwe is one of the largest copper refineries in africa - a facility operating since the colonial copper era. the electrolytic refining process: copper blister cast into large plates called anodes, suspended in tanks filled with copper sulphate solution. thin sheets of pure copper called starter cathodes suspended between the anodes. when an electric current is passed through the tank, copper dissolves from the anode and deposits on the cathode - only the pure copper deposits cleanly. the impurities - gold, silver, platinum, arsenic, and other trace elements - remain as anode slimes or dissolve into the electrolyte for separate processing. the result: cathode copper of 99.99 percent purity in plates of approximately 100 kilograms each.

this is the standard deliverable. this is what the london metal exchange prices. this is what the copper wire drawing factories, the copper tube mills, and the copper sheet rolling mills around the world buy as their raw material.

the critical gap: most of zambia's copper production does not travel the full distance to cathode at a zambian refinery. a significant portion is exported as copper concentrate - the 25 to 35 percent copper powder output of the concentrator, long before the smelter and long before the refinery. concentrate is exported to smelters in india, china, and elsewhere, where the smelting margin and the refining margin are captured by the smelter country rather than by zambia.

every stage of processing that happens outside zambia is a margin zambia does not capture. the smelter treatment charge accrues to the smelter country. the refinery margin accrues to the refinery country. the anode slimes - containing gold, silver, and platinum that are by-products of the refining process - are processed and sold by whoever operates the refinery.

the kansanshi S3 smelter - the most important single investment in closing this gap. when operational, it will process kansanshi's own concentrate into blister copper on site, eliminating concentrate export from one of zambia's largest operations. combined with the nkana refinery and the nchanga smelter, zambia's domestic processing capacity is moving toward the position where the majority of copper production can be processed to cathode within the country. the remaining gap: wire rod fabrication.

process it at home. sell it as finished product. the refinery already exists. the smelter capacity is being expanded. the fabrication investment is the remaining gap. the argument has never been stronger than in 2026.

the zambian copper series continues. 🟤

[blogmassivewitchbouquetstuff]

the zambian copper series, part eight: cobalt

cobalt is a hard, lustrous, silver-grey metal. used for centuries as a pigment - cobalt blue, in chinese porcelain and medieval european stained glass. in the twenty-first century, cobalt has become primarily the battery metal: essential to the cathode chemistry of lithium-ion batteries, essential to the electric vehicle revolution.

the geology of zambian cobalt is inseparable from the geology of zambian copper. the katanga supergroup hosts cobalt - primarily as cobaltite and carrollite - in the same ore bodies as the copper. cobalt is extracted as a by-product. you cannot get the cobalt without mining the copper.

zambia's cobalt production: approximately 4,000 to 6,000 tonnes per year - the world's second largest producer after the DRC, which dominates with approximately 70 percent of global production. the copper and cobalt of central africa are one geological system that colonial boundaries have divided into two national stories.

the battery chemistry connection. the most common EV battery cathode chemistries - NMC and NCA - use cobalt. a typical NMC battery contains approximately 5 to 20 kilograms of cobalt. as EV production scales from 14 million units per year toward 45 million per year by 2030, cobalt demand grows proportionally.

for zambia: the copperbelt mines producing copper are also producing cobalt as a by-product - currently exported largely as a processed intermediate product rather than as battery-grade cobalt compound. the same value addition argument applies: cobalt processed to battery-grade cobalt sulphate or cobalt hydroxide in zambia is substantially more valuable than cobalt exported as a smelter by-product.

zambia's position as the world's second largest cobalt producer, in the decade when the battery revolution is scaling globally, is an economic opportunity of historic proportions.

if the decisions are made to use it.

the zambian copper series continues. 🟤

[blogmassivewitchbouquetstuff]

the zambian copper series, part five: the value addition gap

why does zambia — sitting on one of the greatest copper endowments on earth — still export most of its copper as concentrate or blister rather than finished products?

the chain: ore is concentrated to approximately 25-30% copper. concentrate is smelted to blister copper at 98-99%. blister is refined to cathode at 99.99% — the london metal exchange standard grade. cathode is then fabricated into wire rod, sheet, and tube — the finished forms that electrical, construction, and electronics industries actually use.

at each stage, value is added. the mine receives the lowest value. the fabricator receives the most. where does zambia sit? primarily at the concentrate and blister copper stage. fabrication capacity for downstream copper products is almost non-existent. the copper cathode zambia does produce is exported to fabricators in europe, asia, and north america.

what does this cost zambia? the difference between copper concentrate and finished copper wire rod: approximately USD 1,500-2,000 per tonne — the fabrication premium captured by whoever converts cathode to wire. zambia produces approximately 800,000 tonnes of copper per year. if zambia fabricated even half of that production into wire rod, the additional value captured would be approximately USD 600-800 million per year — staying in zambia as wages, profits, and tax revenue.

the barriers to value addition are real: significant capital investment, reliable and affordable electricity, a domestic or regional market for finished products, technical skills and management capacity for complex manufacturing. real barriers. not insurmountable. chile has a sophisticated downstream copper industry. botswana made value addition in diamonds a national industrial policy priority — and substantially succeeded.

the decision to invest in copper fabrication in zambia is ultimately a political and policy decision.

the zambian copper series continues. 🇿🇲🟤

[blogmassivewitchbouquetstuff]

the zambian copper series: the full story

copper is the reason zambia exists in the form it does. the colonial boundaries that define zambia's territory were drawn, to a substantial degree, around the copper deposits that the british south africa company identified in the late nineteenth century. the copperbelt — the arc of copper deposits stretching from chingola through kitwe, ndola, and mufulira to the DRC border at chililabombwe — is the reason the railway was built, the reason cities grew in the middle of the african bush, the reason the labour migrations from every province of zambia transformed the social structure of a country that had, before the mines, no urban centres of any significance.

but this series is not only a story about history. it is a story about geology and chemistry and global markets and the energy transition and the specific question that zambia faces in 2026: what does copper mean for the next fifty years, and is zambia positioned to capture the value of what it has?

zambia's copper deposits occur in the katanga supergroup — a sequence of sedimentary and metamorphic rocks deposited approximately 880 to 620 million years ago during the late proterozoic era, when the rodinia supercontinent was breaking apart. the katanga supergroup extends from zambia's copperbelt into the DRC's katanga province — the same geological formation that makes the DRC the world's largest cobalt producer and zambia the world's second largest.

the copper in the katanga supergroup occurs as stratiform deposits — layers of copper minerals conformable with the sedimentary layers of the host rock. zambian copper is sediment-hosted — the copper was deposited by hydrothermal fluids circulating through the sedimentary basin, precipitating as copper sulphide minerals in the most permeable and chemically reactive layers.

the result: deposits of extraordinary size and remarkable grade. the nchanga deposit at chingola — home to the nchanga open pit, one of the largest open pit copper mines in the world. the konkola deposit at chililabombwe — one of the highest-grade copper deposits in the world.

zambia's total copper endowment is one of the largest in the world. the question the series will explore is not whether the copper is there. it is. the question is what zambia does with it.

the zambian copper series begins. 🟤

[blogmassivewitchbouquetstuff]

the coal and energy transition series, part five: energy and the mines

the mining sector consumes approximately 60 percent of zambia's total generated electricity. it is the single largest consumer of electricity in the country — by a considerable margin.

a large underground copper mine is, in engineering terms, a series of problems that electricity solves.

ventilation — forcing fresh air kilometres underground and extracting hot, stale air and blasting fumes to keep miners safe and productive. dewatering — pumping the groundwater that continuously infiltrates underground workings to the surface, because a flooded mine is a stopped mine. hoisting — lifting ore from depth to surface. crushing and milling — breaking ore from large lumps to the fine particles that flotation requires. flotation — separating copper minerals from waste rock in large agitated tanks of water and chemical reagents.

at mopani copper mines, the pumping of underground water to the surface is the single largest component of energy costs. this is the energy cost that cannot be avoided or deferred. if the pumps stop, the mine floods. if the mine floods, it takes months — sometimes years — to dewater and restore to safe operating condition. the energy keeping the pumps running is not a variable cost that can be managed down in a crisis. it is the minimum energy floor below which the mine simply ceases to exist as an operating asset.

the 2024 energy crisis put all of this in sharp relief. sourcing more expensive power added on average USD 0.06 per pound of copper to basic cash costs — twice the impact seen earlier that year. zambia's biggest mines turned to eskom of south africa for electricity to keep mines and smelters running. the government shielded the mines from the worst of the load shedding that residential consumers experienced — because copper generates approximately 70 percent of zambia's export earnings and the foreign exchange consequences of mine shutdowns would have been catastrophic.

zambia currently experiences an electricity deficit of over 750 megawatts. that deficit means the mines — even when protected from outright shutdown — are paying more for their electricity than they would in a well-supplied grid environment. sourcing power from independent power producers, from regional imports, from their own generator capacity, all at costs above what a functioning ZESCO tariff would deliver.

zambia has been moving toward a flat rate of 9.33 cents per kilowatt-hour for mining companies — a significant increase from pre-crisis rates. this tariff increase affects the marginal economics of which ore bodies are worth mining, which projects are worth developing, which investments in new mining capacity are commercially justified.

the energy-mining nexus runs in both directions. expanded copper production — the copper needed for EVs, solar panels, and wind turbines — is what global demand is calling for. the clean energy transition that zambia's minerals enable globally requires a reliable, affordable energy system in zambia itself.

every megawatt of low-cost solar generation added to the zambian grid reduces the marginal cost of electricity that the mines pay. cheaper, more reliable electricity means lower operating costs, means better mine economics, means more investment, means more copper, means more export earnings, means more zambian fiscal revenue.

the energy crisis is a mining crisis.

the solar solution is a mining solution.

the coal and energy transition series continues. ⚡

[blogmassivewitchbouquetstuff]

the cobalt series: a final letter to zambia

Dear Zambia.

you have cobalt. you have had it for 880 million years, co-deposited in the same katangan basin sedimentary sequences that gave you copper. the cobalt is not separate from the copper story. it is the copper story's inseparable companion — travelling with it through every ore body, recovered alongside it in every smelter, flowing through chambishi metals as a by-product that the twenty-first century has decided is worth more than many people in this country know.

the world needs your cobalt. not politely, not abstractly. urgently. the electric vehicle revolution — 17 million cars in 2024, 40 million projected by 2030 — is running on NMC batteries that require cobalt to function. the EV makers of seoul and tokyo and detroit and wolfsburg are signing long-term offtake agreements for cobalt right now because the alternative — depending on artisanal cobalt from a DRC artisanal sector whose child labour crisis the EU battery regulation now legally obligates them to audit — is becoming commercially and legally untenable.

your cobalt is clean. that is not a marketing phrase. it is a geological and governance fact. zambia's cobalt is produced as a by-product of large-scale industrial copper mining, in a regulated, documented, auditable supply chain, without the artisanal child labour that makes DRC cobalt a liability in the supply chains of responsible manufacturers.

the processing margin the series has been arguing for — the USD 6,000 per tonne difference between the cobalt sulphate that chambishi metals produces and the NMC precursor that battery manufacturers require — is the difference between zambia being a supplier of inputs to other countries' manufacturing industries and zambia being a participant in the clean energy economy it is physically enabling. the NMC precursor plant — capital cost USD 200 to 400 million, technically feasible, customers available, development finance accessible — is a decision available to be made today.

the lobito corridor is being built. the EV makers are waiting. the development finance institutions are engaged. the ethical sourcing credentials are in place.

the copperbelt worker who recovers cobalt alongside copper deserves to live and work in a province that processes what it mines — that transforms the goblin's ore that 15th-century german miners cursed into the battery material that 21st-century EV makers compete to secure, right here, in zambian facilities, employing zambian engineers and zambian technicians and zambian laboratory analysts.

the cobalt has been waiting 880 million years for zambia to decide what to do with it.

the decision is yours.

the cobalt series is complete. zambia is not just copper. it never was. 🔵

[blogmassivewitchbouquetstuff]

the cobalt series: the closing argument

ten posts. one mineral. one argument.

the geology: carrollite, cobaltiferous pyrite, heterogenite — cobalt co-deposited with copper in the katangan basin for 880 million years. where copper goes, cobalt goes. the copperbelt has always been a cobalt belt. it has simply not been described that way.

the history of naming: cobalt from the german kobold — the goblin's ore of fifteenth-century saxon silver mines. georg brandt isolating it in 1735. the cobalt blue of chinese porcelain, islamic tilework, european stained glass — all made from the element german miners believed was bewitched.

the processing gap: cobalt sulphate to NMC precursor — approximately USD 6,000 per tonne value addition. currently happening in guangdong. not in the copperbelt.

the economics: USD 82,000 per tonne in early 2022. USD 21,500 in early 2025. USD 56,000 entering 2026 after the DRC imposed a total export ban. structural deficit of 10,700 tonnes projected for 2026.

the DRC comparison: same katangan basin geology, completely different governance. artisanal child labour making DRC cobalt a commercial liability. the EU battery regulation requiring supply chain due diligence from january 2027. zambia as the ethical alternative.

the value addition architecture: tier one — chambishi metals, already operating. tier two — NMC precursor, capital cost USD 200–400 million, customers waiting. tier three — cathode active material, the longer-term ambition.

the EV makers: volkswagen, hyundai-kia, GM, ford, tesla. every one has a procurement requirement that zambian cobalt meets and DRC artisanal cobalt structurally cannot.

the lobito corridor: 1,700 kilometres of US- and EU-funded rail connecting the copperbelt to the atlantic. not just logistics. the physical architecture of the western critical minerals supply chain zambia's cobalt is being integrated into.

the copperbelt worker: the person for whom the entire argument is ultimately made. who deserves to work in a copperbelt that processes what it mines — that captures the USD 6,000 per tonne processing margin in zambia rather than in china.

the NMC precursor plant is buildable. the development finance is available. the customers are waiting. the lobito corridor is under construction. the ethical sourcing credentials are already in place.

what remains is the political will to say: the cobalt that leaves the copperbelt should leave as a finished battery material, not as a commodity input for someone else's manufacturing industry.

the ground has been making cobalt for 880 million years.

it is time the copperbelt kept the value of it.

the cobalt series is complete. 🔵

[blogmassivewitchbouquetstuff]

the cobalt series, part nine: who benefits

the value addition argument is for the copperbelt worker. for the man and woman who go underground or work the surface or run the maintenance shift or sit in the laboratory analysing samples.

today, the primary economic benefit of cobalt production in zambia flows to shareholders and governments through royalties and corporate income tax. the value addition margin that currently flows to chinese NMC precursor manufacturers — the USD 6,000-plus per tonne difference between cobalt sulphate and battery cathode precursor — does not employ zambian workers. it employs workers in guangdong and jiangsu.

what an NMC precursor plant in the copperbelt would mean for the zambian worker.

direct employment. an NMC precursor plant at meaningful scale — 10,000 to 20,000 tonnes per year — would employ several hundred to over a thousand direct workers. not unskilled workers. process technicians, chemical engineers, quality control specialists, laboratory analysts, plant supervisors, maintenance engineers. the categories of skilled, well-paid industrial employment that the copperbelt requires to diversify its economic base beyond current mining operations.

indirect employment. every direct manufacturing job in a chemical processing plant generates multiple indirect jobs — in transport and logistics, engineering services, catering, security, maintenance contracting, supply of chemicals and consumables. the indirect employment multiplier for a manufacturing facility is typically three to five times the direct employment. a plant employing 500 direct workers generates 1,500 to 2,500 indirect jobs in the surrounding economy.

skills development. the technical skills required to operate an NMC precursor plant — hydrometallurgical chemistry, quality management systems, battery materials specification compliance — are the same skills supporting zambia's ambition of becoming a battery materials processing hub. workers trained at an NMC precursor plant are workers who can operate a cathode active material plant, a battery cell factory, or any number of advanced manufacturing facilities.

fiscal benefit. a processing plant generating more taxable value within zambia generates more corporate income tax, more royalty revenue, more PAYE tax from a larger and better-paid workforce. the zambian state's fiscal dependence on raw material export royalties is structurally vulnerable to commodity price cycles. cobalt value addition generates more stable, more diversified, more substantial fiscal revenues.

the copperbelt worker who goes underground to recover cobalt alongside copper deserves more than a wage tied to the spot price of cobalt metal.

they deserve to work in a copperbelt that processes what it mines. that captures the value of conversion from cobalt sulphate to NMC precursor within zambia's borders, in zambian facilities, employing zambian hands, paying zambian taxes, building zambian skills.

that is the cobalt value addition argument in its most important form.

the cobalt series continues. 🔵