Copper mattes; cement copper (precipitated copper).
Copper mattes; cement copper (precipitated copper). > Copper mattes; cement copper (precipitated copper).
Duty Rate (from China)
Products classified under Tariff item 7401.00.00.00
Ausmelt Copper Matte
Copper matte produced via Ausmelt submerged lance smelting, typically containing 65-75% copper. This intermediate product of copper smelting falls under tariff item 7401.00.00 as a copper matte, regardless of the proprietary smelting method used.
7401.00.00Bioleach Cement Copper
Cement copper precipitated from bio-oxidation heap leach solutions using bacterial pre-treatment. This hydrometallurgical product is classified as cement copper under tariff item 7401.00.00, which includes precipitated copper recovered from leach solutions.
7401.00.00Black Copper Matte
Black copper matte, an initial product from copper smelting containing 40-50% copper with high iron content. Tariff item 7401.00.00 includes all copper mattes regardless of grade, so this product falls within the heading.
7401.00.00Cement Copper Precipitate
Cement copper precipitate recovered from low-grade leach solutions using scrap iron in a cementation process. This product, typically 50-80% pure copper, falls under tariff item 7401.00.00 as precipitated copper.
7401.00.00Converter Blow Matte
Matte generated during the final converting blow in Peirce-Smith converters, containing 72-78% copper. This standard copper smelting intermediate product falls under tariff item 7401.00.00 as copper matte.
7401.00.00Copper Matte from Smelting Operations
Copper matte, an intermediate product from copper smelting furnaces, consisting primarily of copper and iron sulfides with low precious metal content. This product falls under tariff item 7401.00.00 as a copper matte used in pyrometallurgical processing.
7401.00.00Electrolytic Cement Copper
Cement copper precipitated in electrolytic tankhouse purification circuits using iron scrap, with purity of 80% or more. Tariff item 7401.00.00 covers this high-purity precipitated copper used in anode casting.
7401.00.00Flash Smelt Copper Matte
Copper-iron sulfide matte from the Outokumpu flash smelting process, high-grade with 68-72% copper. This product falls under tariff item 7401.00.00 as a standard copper smelting intermediate.
7401.00.00Heap Leach Cement Copper
Precipitated copper from heap leach solutions using cementation with shredded steel. Tariff item 7401.00.00 includes this low-cost copper recovery product from oxide ores as cement copper.
7401.00.00High-Grade Copper Matte (70% Cu)
Converter matte containing approximately 70% copper, produced in the converting stage after matte smelting. Tariff item 7401.00.00 covers this intermediate product essential for producing copper anodes in fire refining.
7401.00.00Noranda Copper Matte
Matte from the Noranda continuous reaction/submerged arc furnace process, with 72% copper content. Tariff item 7401.00.00 applies to all copper sulfide fusion products regardless of reactor design.
7401.00.00Precious Metal Bearing Copper Matte
Copper matte containing recoverable gold, silver, and PGMs from sulfide ore smelting. Despite the precious metal values, this product is classified under tariff item 7401.00.00 as primary copper matte.
7401.00.00Reverberatory Copper Matte
Traditional reverberatory furnace copper matte, containing 45-55% copper from older smelting technology. This product is still classified under tariff item 7401.00.00 despite being from an older process.
7401.00.00Secondary Copper Matte
Matte recovered from secondary copper smelting of scrap and dross, with 55-65% copper content. Tariff item 7401.00.00 includes recycled copper process intermediates identical to primary mattes.
7401.00.00SX-EW Cement Copper Sludge
Precipitated copper sludge from solvent extraction-electrowinning (SX-EW) plant bleed streams, recovered via cementation. This product falls under tariff item 7401.00.00 as cement copper from hydrometallurgical operations.