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26.19 ‑ Slag, dross (other than granulated slag), scalings and other waste from the manufacture of iron or steel.
The slags covered by this heading are silicates of aluminium, calcium or iron obtained during the smelting of iron ore (blast furnace slag), the refining of pig iron or the manufacture of steel (converter slag). The heading includes these slags whether or not they contain sufficient iron to permit the recovery of the metal. But it excludes the phosphatic slags ("basic slag" or "Thomas slag"); these are important fertilisers and are classified in Chapter 31.
Slag and dross are used in the manufacture of cement, for ballast and in road construction. Slag crushed and roughly graded as macadam falls in heading 25.17. The heading also excludes granulated slag (slag sand) of heading 26.18.
Scalingsare chips of iron oxide which result from the forging, hot‑rolling, etc., of iron or steel.
The heading also includes dust from blast furnaces and other kinds of waste resulting from the manufacture of iron and steel, but not scrap metal produced during cutting, shaping or other metal working processes, which falls in heading 72.04.
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