Metallurgical Grade Quicklime
Coarse quicklime lumps specifically graded for use in blast furnaces and steel desulfurization processes. Falls under HTS 2522.10.00.00 as unslaked quicklime derived from high-purity limestone calcination.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing hydraulic properties from clay impurities
Hydraulic lime with natural setting properties from siliceous limestone classifies separately.
If synthetic or reagent-grade
Laboratory or high-purity calcium oxide is treated as a chemical compound.
If pre-mixed as dolomite ramming mix
Mixtures for metallurgical furnaces fall under refractory cements per chapter exclusions.
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Import Tips & Compliance
• Provide reactivity test results to confirm quicklime status; check for dolomite content that might shift to other limes
• Use ventilated containers to prevent moisture absorption during transit
Related Products under HTS 2522.10.00.00
Industrial Quicklime Powder
High-calcium quicklime in fine powder form, produced by calcining limestone at high temperatures, used primarily in steelmaking for slag formation and impurity removal. Classified under HTS 2522.10.00.00 as quicklime, which is calcium oxide obtained by thermal decomposition of limestone, excluding purer forms in heading 2825.
Construction Quicklime for Mortar
High-reactivity quicklime in pebble form for slaking into lime putty used in traditional masonry mortars and plasters. HTS 2522.10.00.00 covers this as quicklime, distinct from hydraulic or slaked variants.
Water Treatment Quicklime
Fine-ground quicklime optimized for pH adjustment and softening in municipal water purification plants. Classified in HTS 2522.10.00.00 as mineral-derived quicklime, not precipitated chemicals.
Gold Mining Quicklime
Lump quicklime for cyanidation process in gold leaching operations, providing alkaline conditions for ore processing. HTS 2522.10.00.00 applies to this unhydrated mineral product.
Paper Industry Quicklime
Reactive quicklime powder used in kraft pulping for caustic recovery cycles and brightness control. Under HTS 2522.10.00.00 as quicklime from limestone calcination.
Agricultural Quicklime Soil Amendment
Pebble quicklime for farm soil pH correction and magnesium supplementation in acidic fields. HTS 2522.10.00.00 for this agricultural mineral quicklime.