Cement clinkers (whether or not coloured)

HS v2022 Code: 252310

About cement clinkers (whether or not coloured)

HS code 252310 covers cement clinkers, a crucial raw material in the production of cement. Cement is a fundamental building material used in construction projects worldwide, making the cement industry a vital component of the global economy. Cement clinkers are the intermediate product obtained from the calcination of limestone and other raw materials, and their production is a key step in the cement manufacturing process.

Production process

The production of cement clinkers typically involves the following main steps: (1) Quarrying and crushing of raw materials, such as limestone, clay, and other minerals; (2) Proportioning and blending the raw materials to achieve the desired chemical composition; (3) Heating the raw material mixture in a rotary kiln at high temperatures (around 1,450°C) to initiate the chemical reactions and form the clinker; (4) Cooling the clinker to stabilize its chemical composition; and (5) Grinding the clinker into a fine powder, which is the final cement clinker product.

Production inputs

The primary inputs required for the production of cement clinkers are raw materials, such as limestone, clay, and other minerals, as well as energy sources (typically coal or natural gas) to fuel the high-temperature calcination process. Additionally, specialized equipment, including rotary kilns, crushers, and grinding mills, are essential for the various stages of clinker production.

Production outputs

The main output of HS code 252310 is cement clinkers, which are then further processed and combined with other additives to produce the final cement product. The cement industry's output is widely consumed by the construction sector, including 441000 Construction of buildings, 422000 Civil engineering, and 431000 Specialized construction activities.

Revisions to 252310

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 252310. The most recent 1 version of this code (252310) is in the HS v2022 system (this version):

This page shows the most recent version of code 252310.

Family tree for cement clinkers (whether or not coloured)

    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/v2022/2523'>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>"]
B --> C["<a href='/classifications/hs/v2022/252310'>252310: Cement clinkers (whether or not coloured)</a>"]

    B --> D["<a href='/classifications/hs/v2022/252321'>252321: Cement; portland, white, whether or not artificially coloured</a>"]
B --> E["<a href='/classifications/hs/v2022/252329'>252329: Cement; portland, other than white, whether or not artificially coloured</a>"]
B --> F["<a href='/classifications/hs/v2022/252330'>252330: Cement; aluminous (ciment fondu), whether or not coloured or in the form of clinkers</a>"]
B --> G["<a href='/classifications/hs/v2022/252390'>252390: Cement; hydraulic kinds n.e.c. in heading no. 2523</a>"]

    

    %% Color coordination by level

    classDef level1 color:#000,fill:#a8f9ff,stroke:#333,stroke-width:2px
    classDef level2 color:#000,fill:#e0a458,stroke:#333,stroke-width:1px
    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level6
class D level6
class E level6
class F level6
class G level6

  class C highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class C highlight