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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chemically precipitated or battery-grade purity
Purer calcium oxide forms from chemical processes fall under inorganic chemicals in Chapter 28, not mineral products.
If hydrated after calcination
Slaked lime (calcium hydroxide) from reacting quicklime with water is separately classified in the same heading group.
If prepared with admixtures for specific industrial uses
Quicklime mixed with chemicals for non-mineral applications like flocculants moves to prepared binders.
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Import Tips & Compliance
• Verify purity levels to avoid reclassification under 2825; obtain certificates of analysis confirming calcined limestone origin
• Ensure bulk packaging complies with IMO hazardous material regulations for caustic properties
Related Products under HTS 2522.10.00.00
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.
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.