The classification of refractory products is generally divided into standard type, general type, special type.
Special Types, etc.:
(1) Standard type. Normally, straight bricks with an external dimension of 230mm, 114mm, 65mm are called standard bricks.
(2) General Type. The overall size ratio (the ratio of the minimum to the maximum size, the same below) is within the range without concave corners,
Holes or grooves, its unit weight is 8kg clay products, 6kg silica products, 10kg high alumina products,10kg vitrinite or floor aluminum products are called general products.
(1) Abnormal Shape.
Clay and high-alumina shaped products. Where the proportion of external dimensions is within the range, and has no more than concave angle (including arc-shaped concave angle), or with 50°75. Sharp angle, or with no more than grooves, its weight the clay bricks with a weight of 15 angstroms and the high-alumina products with a weight of 18 angstroms are both called special-shaped products.
Silicone shaped products. Where the proportion of the external dimensions is within the range, with no more than concave angles, or with 50. ～75° acute angle, or silicon products with no more than grooves and weighing 12kg are called silicon
Quality Special-Shaped products.
Vitrinite or Specular Aluminum Special-shaped products. All products that are not included in this series of general-purpose products are classified as special-shaped products.
(4) Special Type.
1) Special products of clay and high alumina. Where the proportion of external dimensions is within the range, with no more than concave angle (including arc-shaped concave angle) or an acute angle of 50° 30°, or no more than grooves, or no more than each perforation with a weight of 1.30 square meters of clay products and 1.35 square meters of high-alumina products, are called special type mouth.
1) Silicone special products. Where the proportion of the external dimensions is within the range, with no more than concave corners (including round
2)Arc-shaped concave angle inside), or with 50. ～30° acute angle or with grooves, or with no more than holes, its
Silicone products weighing 1.25 are called special products.
3) Vitrinite special products. Where the size ratio of the external shape is within the range, it has no more than concave angles (including arc-shaped concave angles), or with 30°50. Acute angle; or with no more than perforations; or with no more than vitrinite products with a unit weight of 35 m grooves are called special products。
