Quicklime, slaked lime and hydraulic lime; other than calcium oxide and hydroxide of heading no. 2825

HS v2022 Code: 2522

About quicklime, slaked lime and hydraulic lime; other than calcium oxide and hydroxide of heading no. 2825

HS code 2522 covers a group of essential materials known as lime products, which play a crucial role in various industries, including construction, agriculture, and chemical manufacturing. These lime-based materials are widely used for their unique properties, such as their ability to neutralize acidity, act as a binding agent, and provide structural stability. The production and trade of these lime products are integral to the global economy, supporting a wide range of economic activities and contributing to the development of infrastructure, agriculture, and industrial processes.

Production process

The production of quicklime, slaked lime, and hydraulic lime under HS code 2522 typically involves the thermal processing of limestone or other calcareous materials. The primary method is the calcination of limestone, where the raw material is heated to high temperatures, causing the release of carbon dioxide and the formation of calcium oxide, commonly known as quicklime. Quicklime can then be further processed through hydration to produce slaked lime, or it can be combined with other materials to create hydraulic lime, which has the ability to harden and set when mixed with water.

Production inputs

The main inputs required for the production of lime products under HS code 2522 are limestone, dolomite, and other calcareous raw materials. These materials are typically extracted from quarries or mines and then processed using specialized equipment, such as kilns, crushers, and grinders. Additionally, the production process may require energy sources, such as natural gas or coal, to provide the necessary heat for the calcination and hydration stages. Water is also an essential input for the production of slaked lime and hydraulic lime.

Production outputs

The primary outputs of the industry covered by HS code 2522 are quicklime, slaked lime, and hydraulic lime. These lime-based products have a wide range of applications, including 2523 Cement, 3816 Refractory cements, mortars, concretes and similar compositions, 3825 Residual products of the chemical or allied industries, not elsewhere specified or included, and 3824 Prepared binders for foundry moulds or cores; chemical products and preparations of the chemical or allied industries. The lime products can also be used in the production of 2836 Carbonates, 2835 Phosphinates, phosphonates, phosphates and polyphosphates, and 2818 Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide.

Family tree for quicklime, slaked lime and hydraulic lime; other than calcium oxide and hydroxide of heading no. 2825

    graph LR
    A["<a href='/classifications/hs/v2022/25'>25: Salt; sulphur; earths, stone; plastering materials, lime and cement</a>"]
A --> B["<a href='/classifications/hs/v2022/2522'>2522: Quicklime, slaked lime and hydraulic lime; other than calcium oxide and hydroxide of heading no. 2825</a>"]

    A --> C["<a href='/classifications/hs/v2022/2501'>2501: Salt (including table salt and denatured salt); pure sodium chloride whether or not in aqueous solution; sea water</a>"]
A --> D["<a href='/classifications/hs/v2022/2502'>2502: Iron pyrites; unroasted</a>"]
A --> E["<a href='/classifications/hs/v2022/2503'>2503: Sulphur of all kinds; other than sublimed, precipitated and colloidal sulphur</a>"]
A --> F["<a href='/classifications/hs/v2022/2504'>2504: Graphite; natural</a>"]
A --> G["<a href='/classifications/hs/v2022/2505'>2505: Sands of all kinds; natural, whether or not coloured, other than metal-bearing sands of chapter 26</a>"]
A --> H["<a href='/classifications/hs/v2022/2506'>2506: Quartz; (other than natural sands), quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape</a>"]
A --> I["<a href='/classifications/hs/v2022/2507'>2507: Kaolin and other kaolinic clays; whether or not calcined</a>"]
A --> J["<a href='/classifications/hs/v2022/2508'>2508: Clays; (not including expanded clays of heading no. 6806), andalusite kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earth</a>"]
A --> K["<a href='/classifications/hs/v2022/2509'>2509: Chalk</a>"]
A --> L["<a href='/classifications/hs/v2022/2510'>2510: Natural calcium phosphates; natural aluminium calcium phosphates and phosphatic chalk</a>"]
A --> M["<a href='/classifications/hs/v2022/2511'>2511: Natural barium sulphate (barytes); natural barium carbonate, (witherite) whether or not calcined, other than barium oxide of heading no. 2816</a>"]
A --> N["<a href='/classifications/hs/v2022/2512'>2512: Siliceous fossil meals (e.g. kieselguhr, tripolite and diatomite) and similar siliceous earths; whether or not calcined, of an apparent specific gravity of 1 or less</a>"]
A --> O["<a href='/classifications/hs/v2022/2513'>2513: Pumice stone; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat treated</a>"]
A --> P["<a href='/classifications/hs/v2022/2514'>2514: Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape</a>"]
A --> Q["<a href='/classifications/hs/v2022/2515'>2515: Marble, travertine, ecaussine and other calcareous stone; of an apparent specific gravity of less than 2.5, alabaster, whether cut by sawing etc, into blocks, slabs of a rectangular (square) shape</a>"]
A --> R["<a href='/classifications/hs/v2022/2516'>2516: Granite, porphyry, basalt, sandstone, other monumental and building stone, whether or not roughly trimmed, cut, by sawing etc, into blocks or slabs of a rectangular (including square) shape</a>"]
A --> S["<a href='/classifications/hs/v2022/2517'>2517: Pebbles, gravel, crushed stone for concrete aggregates for road or railway ballast, shingle or flint; macadam of slag, dross etc tarred granules, chippings, powder of stones of heading no. 2515 and 2516</a>"]
A --> T["<a href='/classifications/hs/v2022/2518'>2518: Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape</a>"]
A --> U["<a href='/classifications/hs/v2022/2519'>2519: Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; magnesium oxide, pure or not</a>"]
A --> V["<a href='/classifications/hs/v2022/2520'>2520: Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulphate), coloured or not, with or without small quantities of accelerators or retarders</a>"]
A --> W["<a href='/classifications/hs/v2022/2521'>2521: Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement</a>"]
A --> X["<a href='/classifications/hs/v2022/2523'>2523: Portland cement, aluminous cement (ciment fondu), slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers</a>"]
A --> Y["<a href='/classifications/hs/v2022/2524'>2524: Asbestos</a>"]
A --> Z["<a href='/classifications/hs/v2022/2525'>2525: Mica, including splittings; mica waste</a>"]
A --> BA["<a href='/classifications/hs/v2022/2526'>2526: Natural steatite; whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc</a>"]
A --> BB["<a href='/classifications/hs/v2022/2528'>2528: Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 % of H3BO3 calculated on the dry weight</a>"]
A --> BC["<a href='/classifications/hs/v2022/2529'>2529: Feldspar; leucite; nepheline and nepheline syenite; fluorspar</a>"]
A --> BD["<a href='/classifications/hs/v2022/2530'>2530: Mineral substances not elsewhere specified or included</a>"]

    B --> BE["<a href='/classifications/hs/v2022/252210'>252210: Quicklime; excluding calcium oxide and hydroxide of heading no. 2825</a>"]
B --> BF["<a href='/classifications/hs/v2022/252220'>252220: Slaked lime; excluding calcium oxide and hydroxide of heading no. 2825</a>"]
B --> BG["<a href='/classifications/hs/v2022/252230'>252230: Hydraulic lime; excluding calcium oxide and hydroxide of heading no. 2825</a>"]


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class BA level4
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class BF level6
class BG level6

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