Quicklime
Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 28.25. > Quicklime
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2522.10
Agricultural Quicklime Soil Amendment
Agricultural quicklime in pebble form, produced by calcining limestone to drive off carbon dioxide, leaving calcium oxide. It is used to raise soil pH and supply calcium in acidic farm fields. As a crude, unhydrated mineral product, it falls under tariff item 2522.10.00 for quicklime.
2522.10.00Chemical Manufacturing Quicklime
Technical-grade quicklime in lump form, produced by calcining high-purity limestone, used as a feedstock in chemical manufacturing such as calcium carbide production. It is unhydrated and unprocessed beyond calcination, meeting the scope of heading 25.22 for quicklime.
2522.10.00Construction Quicklime for Mortar
High-reactivity quicklime in pebble form, intended for slaking into lime putty for traditional masonry mortars and plasters. It is a crude calcined product, not yet hydrated or mixed, and thus qualifies as quicklime under tariff item 2522.10.00.
2522.10.00Gold Mining Quicklime
Lump quicklime used in gold mining for cyanidation processes, providing alkaline conditions for ore leaching. It is unhydrated calcium oxide produced by calcination, falling squarely within tariff item 2522.10.00 for quicklime.
2522.10.00Industrial Quicklime Powder
High-calcium quicklime in fine powder form, produced by calcining limestone and used in steelmaking for slag formation and impurity removal. The powder is unhydrated and not mixed, qualifying as quicklime under tariff item 2522.10.00.
2522.10.00Metallurgical Grade Quicklime
Coarse quicklime lumps, graded for use in blast furnaces and steel desulfurization, derived from high-purity limestone calcination. The product is unslaked and unprocessed beyond calcination, meeting the definition of quicklime in tariff item 2522.10.00.
2522.10.00Paper Industry Quicklime
Reactive quicklime powder used in kraft pulping for caustic recovery cycles and brightness control. It is unhydrated calcium oxide from limestone calcination, fitting tariff item 2522.10.00 for quicklime.
2522.10.00Water Treatment Quicklime
Fine-ground quicklime optimized for pH adjustment and softening in municipal water purification. It is a mineral-derived, unhydrated product, not a precipitated chemical, and thus falls under tariff item 2522.10.00 for quicklime.