Manganese Ore CIF Pricing: Grades, Moisture and Procurement

What a CIF Quotation for Manganese Ore Actually Contains

A CIF quotation for a manganese ore cargo is not a single number; it is a bundle of commercial and technical terms. Under the Incoterms 2020 rules published by the International Chamber of Commerce, CIF means that the seller delivers the goods on board the vessel at the port of shipment, contracts and pays for carriage to the named destination port, and arranges cargo insurance cover at the minimum level required by the rules. The risk of loss or damage to the cargo passes to the buyer when the goods are loaded on board, even though the seller keeps paying the freight. Buyers frequently confuse this with the delivery point, and that confusion is the origin of many disputes about who pays for what when a shipment is short-landed or wetted.

For manganese ore moving into ferroalloy smelting plants, the practical difference between CIF, FOB and DAP sits in three places: who books the ocean freight, which party carries the insurance and at what cover, and where the discharge and port handling charges fall. A FOB quotation tells the buyer the loading cost at the export terminal. A CIF quotation rolls ocean freight and insurance into the price but usually stops at the destination port, leaving discharge, barging, port dues, storage and inland haulage to the buyer. DAP moves the price all the way to an inland delivery point, which matters when the smelter is far from the coast and the ore must be railed or trucked after discharge.

How Manganese Ore Prices Are Formed

Manganese ore is a bulk metallurgical raw material, and its price is the sum of a mined cost base plus conversion, logistics and commercial adjustments. There is no single exchange price for ore, so every transaction is negotiated against specifications. The main variables a buyer should quantify before comparing offers are listed below.

Ore grade and manganese unit value: higher Mn content concentrates value per tonne of freight and per tonne of furnace burden. Ore is often bought on a cost-per-manganese-unit basis rather than a flat price per tonne.

Ratio of manganese to iron: a low Mn:Fe ratio forces the smelter to run a leaner slag practice and can reduce manganese recovery in the furnace.

Phosphorus: phosphorus reports almost entirely to the metal in carbothermic reduction, so a high-phosphorus ore constrains which steel grades the finished alloy can serve and may trigger a price penalty.

Silica, alumina and total gangue: excess gangue raises slag volume, slag viscosity and power consumption per tonne of alloy.

Moisture: free surface moisture is dead freight. The commercial moisture basis and the point at which moisture is measured decide how many dry tonnes the buyer actually pays for.

Sizing and friability: lump ore, fines and sinter feed behave differently in the furnace and in handling, so screen analysis is a price-relevant specification.

Energy and reductant costs at the smelter: the buyer's own cost of coke, coal and electricity sets the ceiling for what ore can be paid.

Freight, insurance and currency: ocean freight, war and strike risk cover, bunker surcharges and the settlement currency all move the CIF figure independently of the mine.

Trade measures and compliance: import duties, documentation and cargo-handling rules can change the landed cost after the CIF number is agreed.

Grade Framework and Typical Commercial Specifications

The table below summarises the way manganese ore is normally described in technical annexes. The figures are the ranges commonly seen in commercial practice and in buyer specifications for metallurgical ore; they are indicative envelopes, not a substitute for the certificate of analysis issued for a specific lot.

Description	Typical Mn content	Typical Mn:Fe ratio	Usual route
High-grade lump ore	about 44-50% Mn	above about 6:1	high-carbon ferromanganese and medium-carbon ferromanganese
Medium-grade ore	about 36-42% Mn	about 3:1 to 6:1	high-carbon ferromanganese, blend component
Lower-grade ore	about 30-35% Mn	about 2:1 to 4:1	silicomanganese and manganese-rich slag practice
Fines and sinter feed	grade as declared, sized below the lump cut	as declared	agglomeration before furnace charging

Phosphorus limits in ore specifications for steelmaking alloys are commonly written at low fractions of a percent, and a penalty schedule is frequently agreed in advance for each 0.001% or 0.01% of phosphorus above the base level. Sulphur, alumina and moisture normally carry their own independent limits because each one attacks furnace performance from a different direction.

From the CIF Number to Real Dry-Tonne Cost

The most common mistake in manganese ore buying is comparing two CIF prices without normalising them to a dry basis and to a manganese unit. Moisture is measured on the wet mass actually shipped, so a cargo declared at a given tonnage on a wet basis contains less ore than the same tonnage on a dry basis. Two figures must be agreed in the contract before offers can be compared: the basis for moisture determination and the allowance for weight loss in transit.

A workable comparison routine is as follows. First, convert the offer tonnage to dry tonnes by subtracting the agreed moisture percentage from the wet mass, or by dividing the wet mass by the factor that corresponds to the declared moisture. Second, multiply the dry tonnes by the manganese grade to obtain contained manganese units. Third, divide the total CIF amount by the contained manganese to obtain the cost per manganese unit. Fourth, add the buyer's own discharge, inland transport, handling loss and financing charges to reach a true delivered cost per manganese unit at the furnace. Only then are two offers genuinely comparable.

Comparison step	What to calculate	Why it changes the ranking
Basis conversion	wet tonnes to dry tonnes using the contractual moisture basis	removes dead freight and stops moisture-heavy cargoes looking cheap per tonne
Contained units	dry tonnes multiplied by the certified Mn grade	normalises different grades onto a common value unit
Unit cost	CIF amount divided by contained manganese	exposes the real difference between two offers
Delivered cost	add discharge, port dues, inland freight, handling loss, financing	a low CIF offer can lose its advantage once inland cost is included
Furnace impact	add the effect of gangue and Mn:Fe ratio on consumption	a slightly cheaper ore can raise cost per tonne of alloy

Sampling, Analysis and Acceptance Rules

Because price follows analysis, the sampling and testing protocol is a commercial document, not a formality. For manganese ores, the international framework for mechanical sampling and sample preparation is the ISO 4296 series, while general instructions for the chemical analysis of manganese ores and concentrates are covered by ISO 4297. Ferroalloy sampling, and the sampling of alloys produced from ore, is addressed separately by ISO 3713, and the Chinese national standard GB/T 4010 covers the sampling and preparation of samples for chemical analysis of ferroalloys. Particle size verification for ferroalloys is dealt with in GB/T 13247, and packaging requirements appear in GB/T 3650.

In practice the agreed protocol should fix the number of increments, the increment mass, the method of moisture determination, the division between buyer and seller analysis, the use of an umpire laboratory, the retained sample period and the tolerance that decides whether a lot is accepted or subject to a claim. Moisture deserves particular attention because it is the most frequently disputed number in bulk ore contracts. The moisture content is usually established on samples taken at the loading or discharging port and sealed immediately; the tested value is then applied to the whole parcel.

Sizing, Friability and Behaviour in the Furnace

Manganese ore is charged either directly as sized lump or after agglomeration of fines. Screen analysis protects the furnace from two opposite faults: too coarse a burden reduces the reaction surface and slows smelting, while too fine a burden blocks the gas path and encourages dust losses. Friability is equally important because ore that breaks down between the mine and the furnace arrives as a different material from the one that was bought.

The acceptance file should therefore carry a stated size range with tolerances, an undersize and oversize allowance, and a handling test if the cargo will be transhipped more than once. Where the ore is to be sintered or briquetted, the specification should state the fines fraction expected into the agglomeration plant and the moisture that the process can tolerate. Reductant quality is assessed on the same logic: fixed carbon, ash, volatile matter and reactivity determine how many kilograms of reductant are needed per tonne of alloy, which in turn sets the ore-to-reductant ratio the buyer can afford.

Logistics, Documentation and Compliance Checks

Bulk ore is moved in capesize, panamax or handymax parcels depending on the trade, and port capability decides the economics of any particular delivery. Laytime, demurrage, and the loading and discharging rates belong in the contract because they are usually the second-largest controllable cost after the ore itself. Insurance cover under a CIF sale is normally arranged at the minimum level required by the applicable Incoterms rule, and buyers with large inventories should confirm that the cover is adequate for their exposure rather than assume it.

Documentation for an ore shipment typically includes the commercial invoice, the bill of lading, the certificate of origin, the certificate of analysis, the moisture certificate, weight certificates issued at load and discharge, and the insurance certificate. Cargo that may liquefy must be declared and handled according to the applicable provisions of the International Maritime Solid Bulk Cargoes Code, which classifies such cargoes and sets out the testing and documentation the shipper must provide. Importing into China brings additional requirements, including the accuracy of the declared grade and the completeness of the analysis documentation, because customs valuation depends on a consistent description of the goods.

Comparing Quotations: The Parameter Checklist

A quotation can only be judged against a fixed parameter list. Before prices are compared, the buyer should have in hand: the incoterm and named port, the currency and settlement terms, the tonnage and whether it is a wet or dry basis, the contractual moisture basis and the penalty for excess moisture, the certified Mn, Fe, P, Si and alumina levels, the Mn:Fe ratio, the size range with undersize and oversize tolerances, the packaging or bulk handling arrangement, the laytime and demurrage terms, the loading and discharging rates, the sampling and umpire protocol, the documentation list and the validity period of the offer.

Two further points decide whether a quotation is workable rather than merely attractive. The first is the equation between ore grade and the buyer's own process: a smelter making high-carbon ferromanganese or silicomanganese has a narrow window of ore grades that its furnace can consume economically, and ore outside that window is not cheap at any price. The second is the reductant and power balance. A reduction in ore grade lowers the manganese input per tonne of burden and usually raises the coke rate and the specific power consumption, so the apparent saving on ore can be cancelled by a higher conversion cost.

Common Misconceptions

Assuming the cheapest CIF is the cheapest ore. Grade, moisture and gangue can reverse the ranking once the cost per manganese unit and the furnace consumption are calculated.

Treating moisture as a minor matter. Moisture is paid for in freight and lost in the furnace, and it is the figure most often disputed.

Ignoring the Mn:Fe ratio. A low ratio constrains the alloy grades that can be produced from the ore, independent of the manganese content.

Buying on a single analysis. A single lot analysis says nothing about the variability between increments; blending risk belongs in the specification.

Confusing risk transfer with delivery. Under CIF the risk passes on board at loading, so insurance arrangements need to match the buyer's actual exposure.

Forgetting the second-order costs. Discharge, port dues, storage, inland freight and financing frequently decide which of two offers is genuinely the better buy.

FAQ

Q: What does CIF mean for a manganese ore cargo?
Under Incoterms 2020, CIF means the seller delivers the goods on board at the port of shipment, pays the freight to the named destination port and arranges minimum cargo insurance; risk passes to the buyer when the cargo is loaded on board.

Q: How should two manganese ore offers be compared?
Normalise both offers to dry tonnes, multiply by the certified manganese grade to obtain contained units, divide the total amount by those units, then add discharge, inland transport, handling loss and financing to reach a delivered cost per manganese unit.

Q: Which standards cover sampling and analysis of manganese ore?
The ISO 4296 series covers mechanical sampling and sample preparation for manganese ores, and ISO 4297 covers general instructions for chemical analysis; ferroalloy sampling is covered separately by ISO 3713 and by GB/T 4010 for sample preparation for chemical analysis.

Q: Why does phosphorus in ore matter so much?
In carbothermic reduction phosphorus reports almost entirely to the metal, so ore phosphorus passes into the ferromanganese or silicomanganese and limits the steel grades the alloy can serve; contracts therefore set a phosphorus limit and often a penalty schedule above it.

Q: How is moisture treated in the price?
Moisture is measured on a sample sealed at the load or discharge port and applied to the parcel; the wet mass is then converted to a dry basis so that the buyer pays only for ore rather than for water carried in the cargo.

Q: Does ore sizing affect the price a smelter should pay?
Yes. Lump ore and sinter feed behave differently in the furnace and in handling, so screen analysis, undersize and oversize tolerances, and friability all belong in the specification and in any price comparison.