Why the price is different for high alumina bricks with same material?

The prices of high alumina bricks of the same material vary. This is mainly due to the differences in body density, shape, and quantity, which can cause significant price differences among refractory bricks of the same material.

Because for high alumina bricks of the same material, taking LZ-65 refractory bricks as an example, due to their special specifications and shapes, their prices will be several hundred yuan or even over a thousand yuan higher than those of standard-sized refractory bricks. Standard bricks are marked by the state in terms of size, while special-shaped bricks are generally used in small quantities and have strange shapes. If the quantity is small, the price will be several thousand yuan higher. Due to its strange shape, it is difficult to demold. During the production process, it is hard to form, the yield rate decreases, and the cost increases invisibly. Moreover, the quantity is small, with some even just a few bricks. The cost of molds is high, and it takes half a day to change the molds. Once the molds are installed and production continues, the molds need to be replaced, which increases the workers' wages. So, the prices of high alumina bricks of the same material are different due to different shape.

In addition, for high alumina bricks of the same material, if the volume density requirements are different and the load-softening temperature is also different, the price difference will be even greater. For high alumina bricks with the same 65% content, if the volume density and load-bearing requirements increase, the price will also rise accordingly. Just in terms of aluminium content, for the same aluminium content, due to the increase in physical indicators, the price will also rise accordingly. If the iron content requirement is low, the price will also increase accordingly.

To sum up, it is proved that the price of high alumina bricks cannot be determined by a single indicator. The price of refractory bricks can only be decided by different physical indicators, shapes and quantities.