Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight, singly or together, more than 50% of the elements Mg, Ca or Cr, expressed as MgO, CaO or Cr2o3

HS v2022 Code: 690210

About refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight, singly or together, more than 50% of the elements mg, ca or cr, expressed as mgo, cao or cr2o3

HS code 690210 covers a crucial category of refractory ceramic materials used extensively in the construction and manufacturing industries. These specialized products, which contain high concentrations of magnesium, calcium, or chromium oxides, are essential for withstanding extreme temperatures and harsh environments. Their importance spans various sectors, from steel production to glass manufacturing, making them a vital component of the broader industrial landscape.

Production process

The production of HS 690210 refractory bricks, blocks, tiles, and similar goods typically involves a multi-step process. First, the raw materials, such as magnesite, dolomite, or chromite, are mined and processed to meet the required chemical composition. These materials are then crushed, ground, and blended to achieve the desired mixture. The resulting powder is then pressed into the desired shapes, such as bricks or tiles, using specialized machinery. Finally, the formed products undergo a high-temperature firing process to enhance their durability and heat-resistant properties.

Production inputs

The primary inputs for the production of HS 690210 refractory materials are the mineral raw materials containing magnesium, calcium, or chromium oxides. These include 251910 (Natural magnesium carbonate (magnesite)), 251990 Dolomite, whether or not calcined or sintered, and 261000 Chromium ores and concentrates. In addition to these raw materials, the manufacturing process requires specialized equipment, such as crushers, grinders, and high-temperature kilns or furnaces, as well as energy sources to power the production facilities.

Production outputs

The primary outputs of HS 690210 are refractory bricks, blocks, tiles, and similar constructional goods that are designed to withstand high temperatures and harsh environments. These products are widely used in the construction of industrial furnaces, kilns, and other high-heat applications, as well as in the production of 720710 Semifinished products of iron or non-alloy steel, 700100 Cullet and other waste and scrap of glass; glass in the mass, and 840410 (Auxiliary plant for use with boilers of heading 8402 or 8403 (for example, economizers, superheaters, soot removers, gas recoverers)).

Revisions to 690210

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 690210. The most recent 1 version of this code (690210) is in the HS v2022 system (this version):

This page shows the most recent version of code 690210.

Family tree for refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight, singly or together, more than 50% of the elements mg, ca or cr, expressed as mgo, cao or cr2o3

    graph LR
    A["<a href='/classifications/hs/v2022/69'>69: Ceramic products</a>"]
A --> B["<a href='/classifications/hs/v2022/6902'>6902: Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; other than those of siliceous fossil meals or similar siliceous earths</a>"]
B --> C["<a href='/classifications/hs/v2022/690210'>690210: Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight, singly or together, more than 50% of the elements Mg, Ca or Cr, expressed as MgO, CaO or Cr2o3</a>"]

    B --> D["<a href='/classifications/hs/v2022/690220'>690220: Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight more than 50% of alumina (Al2o3), of silica (SiO2) or of a mixture or compound of these</a>"]
B --> E["<a href='/classifications/hs/v2022/690290'>690290: Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; n.e.c. in item no. 6902.1 or 6902.2</a>"]

    

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    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 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