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

HS v2017 Code: 2522

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

HS code 2522 covers quicklime, slaked lime, and hydraulic lime, which are essential materials in various industries. These lime-based products play a crucial role in construction, steel production, water treatment, and numerous other applications. As a key component in the production of cement, lime is a fundamental input for the construction sector, contributing to the development of infrastructure and buildings worldwide. Additionally, the use of lime in steel manufacturing helps to remove impurities, making it an indispensable resource for the metal industry.

Production process

The production of quicklime, slaked lime, and hydraulic lime 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, typically in a lime kiln, to drive off carbon dioxide and produce quicklime. Quicklime can then be further processed by the addition of water to create slaked lime, or hydrated lime. Hydraulic lime is produced by the partial hydration of quicklime, resulting in a material that can set and harden under water.

Production inputs

The main inputs required for the production of lime-based products under HS code 2522 are limestone, dolomite, or other calcareous raw materials. These natural resources are the primary feedstock for the lime manufacturing process. Additionally, energy sources, such as coal, natural gas, or electricity, are needed to power the high-temperature kilns used in the calcination step. Specialized equipment, including crushers, grinders, and kilns, are also essential for the efficient production of quicklime, 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 are widely used in various industries, including 2523 Cement and concrete, 7201 Pig iron and spiegeleisen in pigs, blocks or other primary forms, and water treatment. Quicklime and slaked lime are also used in the production of 2825 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides, as well as in the manufacturing of 3824 (Prepared binders for foundry moulds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included).

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/v2017/25'>25: Salt; sulphur; earths, stone; plastering materials, lime and cement</a>"]
A --> B["<a href='/classifications/hs/v2017/2522'>2522: Quicklime, slaked lime and hydraulic lime; other than calcium oxide and hydroxide of heading no. 2825</a>"]

    A --> C["<a href='/classifications/hs/v2017/2501'>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/v2017/2502'>2502: Iron pyrites; unroasted</a>"]
A --> E["<a href='/classifications/hs/v2017/2503'>2503: Sulphur of all kinds; other than sublimed, precipitated and colloidal sulphur</a>"]
A --> F["<a href='/classifications/hs/v2017/2504'>2504: Graphite; natural</a>"]
A --> G["<a href='/classifications/hs/v2017/2505'>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/v2017/2506'>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/v2017/2507'>2507: Kaolin and other kaolinic clays; whether or not calcined</a>"]
A --> J["<a href='/classifications/hs/v2017/2508'>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/v2017/2509'>2509: Chalk</a>"]
A --> L["<a href='/classifications/hs/v2017/2510'>2510: Natural calcium phosphates; natural aluminium calcium phosphates and phosphatic chalk</a>"]
A --> M["<a href='/classifications/hs/v2017/2511'>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/v2017/2512'>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/v2017/2513'>2513: Pumice stone; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat treated</a>"]
A --> P["<a href='/classifications/hs/v2017/2514'>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/v2017/2515'>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/v2017/2516'>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/v2017/2517'>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/v2017/2518'>2518: Dolomite, whether or not calcined or sintered; including dolomite roughly trimmed, or merely cut by sawing or otherwise into blocks or slabs of rectangular (including square) shape; dolomite ramming mix</a>"]
A --> U["<a href='/classifications/hs/v2017/2519'>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/v2017/2520'>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/v2017/2521'>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/v2017/2523'>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/v2017/2524'>2524: Asbestos</a>"]
A --> Z["<a href='/classifications/hs/v2017/2525'>2525: Mica, including splittings; mica waste</a>"]
A --> BA["<a href='/classifications/hs/v2017/2526'>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/v2017/2528'>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/v2017/2529'>2529: Feldspar; leucite; nepheline and nepheline syenite; fluorspar</a>"]
A --> BD["<a href='/classifications/hs/v2017/2530'>2530: Mineral substances not elsewhere specified or included</a>"]

    B --> BE["<a href='/classifications/hs/v2017/252210'>252210: Quicklime; excluding calcium oxide and hydroxide of heading no. 2825</a>"]
B --> BF["<a href='/classifications/hs/v2017/252220'>252220: Slaked lime; excluding calcium oxide and hydroxide of heading no. 2825</a>"]
B --> BG["<a href='/classifications/hs/v2017/252230'>252230: Hydraulic lime; excluding calcium oxide and hydroxide of heading no. 2825</a>"]


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class E level4
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class G level4
class H level4
class I level4
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class N level4
class O level4
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class R level4
class S level4
class T level4
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class V level4
class W level4
class X level4
class Y level4
class Z level4
class BA level4
class BB level4
class BC level4
class BD level4
class BE level6
class BF level6
class BG level6

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