Chapter 8474 — Customs Tariff Headings

8474.20.00Crushing or grinding machines

8474.3Mixing or kneading machines:

8474.80.00Other machinery

8474.90.00Parts

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Products classified under Tariff item 84.74

Aggregate Dewatering Screen

An aggregate dewatering screen uses high-frequency vibration to remove water from washed sand and gravel, effectively screening and dewatering mineral substances. This machine falls under tariff item 8474.10.00 as it is designed for sorting, screening, separating, or washing earth, stone, ores, or other mineral substances in solid form.

Coal Washing Jig

A coal washing jig uses pulsating water to stratify coal by density, separating ash and impurities. This machine is classified under tariff item 8474.10.00 as it performs washing and separating functions on solid mineral fuels.

Crushing Screen Combo Unit

A mobile crushing and screening plant combines jaw crushing with vibrating screens to process quarried stone into aggregates. Although it includes crushing, the primary function is screening and sorting mineral substances, placing it under tariff item 8474.10.00.

Density Separator for Minerals

A density separator for minerals uses a fluidized bed to achieve density-based separation of coal or ores. This machine is classified under tariff item 8474.10.00 as it separates solid mineral substances.

Fixed Bauxite Ore Washing Station

A stationary trommel scrubber and attrition cell system for washing red mud clay from bauxite ore prior to alumina refining. This fixed installation performs washing of mineral ores, qualifying under tariff item 8474.10.00 for stationary washing machines.

Fixed Copper Ore Shaking Table

A stationary Wilfley shaking table for gravity concentration of copper sulfides and native copper from milled ore. This fixed machine separates minerals by density, fitting tariff item 8474.10.00 for stationary separating machines of mineral substances.

Fixed Diamond Ore Dense Media Separator

A stationary cyclone-based dense media separation plant using ferrosilicon slurry to separate diamonds from kimberlite ore by specific gravity. This fixed installation performs mineral separation, qualifying under 8474.10.00 for stationary separating machines, including media recovery components.

Fixed Gold Ore Gravity Separator

A stationary shaking table or jig concentrator that separates gold-bearing minerals from gangue using gravity differential in ore processing plants. This fixed machine performs a separating function on solid mineral substances, fitting tariff item 8474.10.00.

Fixed Iron Ore Jigging Separator

A stationary Baum or Batac jig for density separation of iron ore lump and fines using pulsating water bed stratification. This fixed machine separates minerals by density, qualifying under 8474.10.00 for stationary separating machines.

Fixed Mineral Flotation Cell

A stationary mechanical flotation cell for selective froth separation of valuable minerals like copper sulfide from ore pulp. Although involving liquid, this machine is designed for solid mineral substance separation, fitting tariff item 8474.10.00.

Flotation Cell Agitator Separator

A flotation cell agitator separator uses air bubbles to separate valuable minerals from pulp. Although it involves liquid, it is designed for separating solid mineral substances, fitting tariff item 8474.10.00.

Gold Ore Shaker Table

A gold ore shaker table uses vibration and water to concentrate gold-bearing ores by specific gravity. This machine falls under tariff item 8474.10.00 as it separates solid mineral substances.

Magnetic Ore Separator Drum

A magnetic ore separator drum uses magnetism to pull ferromagnetic minerals from ore slurries or dry feeds. This machine is classified under tariff item 8474.10.00 as it separates solid mineral substances.

Mineral Spiral Concentrator

A mineral spiral concentrator uses gravity and helical chutes to separate heavy minerals from lighter gangue. This machine falls under tariff item 8474.10.00 as it separates solid mineral substances in mining applications.

Ore Sorting Machine

An automated ore sorting machine uses sensors and air jets to separate valuable ore from waste rock. This machine is classified under tariff item 8474.10.00 as it sorts solid mineral substances.

Portable Aggregate Washing Screw

A portable aggregate washing screw is a trailer-mounted helical screw washer for desliming and classifying sand and aggregates. This machine falls under tariff item 8474.10.00 as it washes and separates solid mineral products.

Portable Clay Washing Pugmill

A mobile pugmill mixer-washer designed for processing clay ores, combining kneading and washing to remove impurities for ceramic production. Although the heading mentions kneading, the portable mineral washing function is the principal purpose, placing it under tariff item 8474.10.00 for sorting, screening, separating or washing machines.

Portable Diamond Jig Separator

A battery-powered jig concentrator for separating diamonds and heavy minerals from ore gravel using pulsating water beds, designed for field exploration. This portable machine performs a separating function on mineral substances in solid form, qualifying under tariff item 8474.10.00.

Portable Gold Trommel Screen

A portable rotary drum screen designed for washing and screening placer gold deposits and alluvial ores in remote mining sites. It sorts and separates gold-bearing gravel from finer sediments using water and mechanical action, fitting the scope of washing and separating machines for mineral substances under 8474.10.00.

Portable Ore Crushing Jaw Crusher

A compact, diesel-powered jaw crusher mounted on wheels for on-site crushing of hard rock ores like quartz or sulfide minerals into smaller sizes for further processing. Although crushing is mentioned in the heading, this portable machine is classified under 8474.10.00 as a portable machine for mineral substances, per the product listing.

Portable Placer Mining Sluice Box

A foldable aluminum sluice with riffles and mats for gravity separation of gold from placer gravel, portable for backpacking to sites. This manual device performs a separating function on mineral substances, qualifying under 8474.10.00 as portable separating machinery.

Portable Quartz Crusher and Screener Combo

A compact skid-mounted unit combining jaw crushing and vibrating screening for quartz ore processing in artisanal mining. This portable machine performs both crushing and screening functions, but is classified under 8474.10.00 as portable machinery for mineral substances, per the product listing.

Portable Rock Washer and Classifier

A gasoline-engine driven unit with spray bars and classifying screens for washing clay from rocks and classifying by size in placer mining. This portable machine performs washing and separating functions on solid mineral substances, fitting tariff item 8474.10.00.

Portable Sand and Gravel Screening Plant

A wheeled screening plant with vibrating decks for separating sand, gravel, and aggregates by size in construction and quarry sites. It processes earth and mineral substances in solid form, qualifying as portable screening machinery under 8474.10.00.

Portable Soil Screening Machine

A hand-push vibratory screener for separating rocks, debris, and fines from topsoil in landscaping and remediation projects, processing earth in solid form. This portable machine fits tariff item 8474.10.00 as portable screening machinery for earth or mineral substances.

Quarry Vibrating Grizzly Feeder Screen

A quarry vibrating grizzly feeder screen uses heavy bars and vibration to scalp oversized rocks from quarry stone. This machine falls under tariff item 8474.10.00 as it screens stone and mineral substances.

Rotary Ore Trommel Screen

A rotary ore trommel screen tumbles ore in a rotating drum with perforated sections to screen and wash minerals by size. This machine is classified under tariff item 8474.10.00 as it performs combined screening and washing of solid minerals.

Sand Washing Plant

A sand washing plant scrubs and rinses silica sand or aggregate to remove clay, silt, and impurities. This machine falls under tariff item 8474.10.00 as it washes mineral substances in solid form.

Stationary Coal Screening Plant

A stationary coal screening plant is a large fixed vibrating screen deck system used to size run-of-mine coal into lump, nut, and slack fractions before washing. It falls under tariff item 8474.10.00 as a sorting or screening machine for solid mineral fuels.

Stationary Gravel Classifying Tank

A stationary gravel classifying tank is a fixed hydraulic classifying tank with multiple compartments that uses rising current separation to sort gravel and sand fractions for concrete aggregate. It is classified under 8474.10.00 as a separating machine for mineral substances.

Stationary Limestone Crusher Feeder Screen

A stationary limestone crusher feeder screen is a fixed apron feeder with an integrated scalping screen that removes oversize material from limestone before primary crushing in cement plants. It falls under 8474.10.00 as a screening machine for earth or stone.

Stationary Ore Sorting Machine

A stationary ore sorting machine is designed to sort ore particles by size, density, or composition using vibrating screens and air classifiers. It is classified under 8474.10.00 as stationary equipment for separating mineral substances.

Stationary Phosphate Rock Screening Machine

A stationary phosphate rock screening machine is a fixed double-deck vibrating screen used in beneficiation plants to separate phosphate pebbles from overburden and fines. It falls under 8474.10.00 as a screening machine for mineral substances.

Stationary Quarry Stone Sizing Screen

A stationary quarry stone sizing screen is a heavy-duty inclined screen used for classifying blasted quarry rock into crusher feed, road base, and riprap sizes. It is classified under 8474.10.00 as a screening machine for stone and minerals.

Stationary Rare Earth Mineral Separator

A stationary rare earth mineral separator is a fixed high-intensity magnetic drum separator that removes paramagnetic gangue from rare earth mineral concentrates. It falls under 8474.10.00 as a separating machine for mineral substances.

Stationary Sand Washing Plant

A stationary sand washing plant is a fixed installation that scrubs and separates clay and silt from silica sand using log washers and hydrocyclones. It is classified under 8474.10.00 as a washing machine for mineral substances in solid form.

Stone Powder Classifier

A stone powder classifier separates fine stone powders from coarser particles using centrifugal air flow. This machine is classified under tariff item 8474.10.00 as it screens mineral powders.

Vibrating Screen Separator

A vibrating screen separator is used in mining and aggregate processing to sort and screen ore, stone, and other mineral substances by size. This machine falls under tariff item 8474.10.00 as it separates particles into different grades.

Vibrating Screen Separator for Aggregates

A vibrating screen separator for aggregates is a stationary multi-deck vibrating screen used to separate crushed stone aggregates into size fractions for construction materials. It falls under 8474.10.00 as a screening machine for solid mineral substances.

Astec Kodiak K500+ Stationary Cone Crusher

The Astec Kodiak K500+ is a stationary cone crusher designed for high-capacity aggregates production from hard rock ores in fixed processing plants. It reduces solid mineral substances such as granite and basalt into smaller, uniform fragments through compression crushing. This machine falls under tariff item 8474.20.00 as a crushing machine for earth, stone, ores, or other mineral substances in solid form.

Barmac B5100 Stationary VSI Crusher

The Barmac B5100 is a stationary vertical shaft impact (VSI) crusher used for fine shaping of aggregates and ores in fixed installations. It accelerates material to high speed and impacts it against a crushing chamber to produce cubical particles. This machine is classified under tariff item 8474.20.00 as a crushing machine for mineral substances in solid form.

boule Crystal Diameter Grinder

An automated grinder designed to shape semiconductor boules to uniform diameter specifications, ensuring consistent wafer yield. It processes solid mineral substances such as silicon crystals, which falls under the scope of crushing or grinding machines for mineral materials.

Crystal Ingot Slicing Pre-Grinder

A pre-grinding machine that prepares silicon ingots before multi-wire saw slicing into wafers. It ensures uniform slicing and higher wafer quality by grinding the solid mineral ingot, fitting the definition of a grinding machine for mineral substances.

Czochralski Crystal Puller Grinder

A precision grinding machine used to grind semiconductor crystal boules produced by the Czochralski method to exact diameters for wafer slicing. It processes solid mineral substances, qualifying as a grinding machine under this tariff item.

Diamond Wafer Grinding Machine

A high-precision grinder using diamond abrasives for initial silicon wafer backgrinding, reducing wafer thickness from 700μm to less than 100μm. It grinds solid mineral wafers, fitting the scope of grinding machines for mineral substances.

Eagle Crusher UltraMax UM-25 Stationary Impact Crusher

The Eagle Crusher UltraMax UM-25 is a stationary impact crusher designed for recycling concrete and crushing natural stone ores in fixed plants. It uses high-speed impact rotors to break down material into reusable aggregates. This machine qualifies under tariff item 8474.20.00 as a crushing machine for earth, stone, ores, or other mineral substances in solid form.

ElJay 1145 Kodiak Cone Crusher

The ElJay 1145 Kodiak is a stationary cone crusher designed to reduce hard rock ores and mineral substances into specification aggregates. It operates by compressing material between a moving cone and a fixed bowl, making it a crushing machine for solid mineral substances. This places it under tariff item 8474.20.00, which covers crushing or grinding machines for earth, stone, ores, or other mineral substances in solid form.

Extec S-5 Stationary Impact Crusher

The Extec S-5 is a stationary impact crusher designed for secondary crushing of demolition waste and ores in fixed processing facilities. It reduces material through impact forces generated by rotating hammers or blow bars. This machine is classified under tariff item 8474.20.00 as a crushing machine for mineral substances in solid form.

Fabo DMK-01 Stationary Cone Crusher

The Fabo DMK-01 is a stationary cone crusher designed for hard rock tertiary crushing in fixed aggregate plants. It compresses material between a fixed and a moving cone to produce fine aggregates. This machine falls under tariff item 8474.20.00 as a crushing machine for earth, stone, ores, or other mineral substances in solid form.

Float Zone Crystal Boule Grinder

A grinding apparatus for float zone monocrystalline semiconductor boules, creating precise flats indicating resistivity. It grinds solid mineral substances, qualifying as a grinding machine under this tariff item.

Gallium Arsenide Crystal Grinder

A specialized grinder for gallium arsenide compound semiconductor boules, grinding to precise diameters and flats. It processes solid mineral substances, fitting the definition of a grinding machine for minerals.

Gyratory Primary Crusher 42-65

The 42-65 gyratory primary crusher is a stationary machine used for massive ore bodies in copper and gold mines. It crushes large rocks through a gyrating motion between a fixed and a moving cone. This machine is classified under tariff item 8474.20.00 as a crushing machine for mineral substances in solid form.

Handheld Portable Ore Grinder

A battery-powered handheld grinder for small-scale mineral ore sample crushing in field geology. It is a portable grinding machine for solid minerals, fitting the scope of this tariff item.

Hazemag AP-PH 1210 Stationary Impact Crusher

The Hazemag AP-PH 1210 is a stationary primary impact crusher designed for limestone and phosphate rock in fixed mining setups. It uses impact bars to break down large feed material into smaller sizes. This machine qualifies under tariff item 8474.20.00 as a crushing machine for earth, stone, ores, or other mineral substances in solid form.

Kue-Ken 120S Stationary Jaw Crusher

The Kue-Ken 120S is a vintage stationary jaw crusher restored for aggregate production in fixed quarries. It crushes material by compressing it between a fixed and a moving jaw plate. This machine falls under tariff item 8474.20.00 as a crushing machine for mineral substances in solid form.

McCloskey J45 Stationary Jaw Crusher

The McCloskey J45 configured as a stationary jaw crusher is designed for high-volume ore and rock crushing in mining facilities. It uses a fixed jaw and a moving jaw to compress and break down large rocks. This machine is classified under tariff item 8474.20.00 as a crushing machine for mineral substances in solid form.

Metso Nordberg HP400 Cone Crusher

The Metso Nordberg HP400 is a stationary cone crusher designed for secondary and tertiary crushing of hard rock and ore in mining operations. It uses a hydraulic system to adjust the crushing gap and produce consistent product sizes. This machine qualifies under tariff item 8474.20.00 as a crushing machine for mineral substances in solid form.

Parker Plant GC1245 Stationary Jaw Crusher

The Parker Plant GC1245 is a stationary jaw crusher designed for quarry primary crushing of limestone and aggregates. It uses a fixed jaw and a reciprocating jaw to crush large rocks into smaller sizes. This machine falls under tariff item 8474.20.00 as a crushing machine for earth, stone, ores, or other mineral substances in solid form.

Portable Ball Mill for Ore Grinding

A compact, trailer-mounted ball mill for fine grinding of mineral ores into powder for mining operations. It is a portable grinding machine for solid minerals, qualifying under this tariff item.