There are significant differences between low porosity clay brick and light clay brick in performance, use and production technology. The following is a detailed comparison between them:

I. Porosity and density

Low porosity clay brick: the porosity is usually lower than 17%, even lower (such as 10%-15%), and the density is relatively high, and the bulk density is generally between 2.30-2.40 g/cm³.

Lightweight clay brick: The porosity is high, usually between 40% and 60%, the density is low and the volume is light.

II. Strength and wear resistance

Low porosity clay brick: due to low porosity, compact structure and high compressive strength, the compressive strength at room temperature can reach 68-100 MPa, and the wear resistance is good.

Lightweight clay brick: due to many pores, its strength and wear resistance are relatively low.

III. Thermal conductivity and thermal insulation performance

Low porosity clay brick: high thermal conductivity, suitable for scenes requiring efficient heat conduction.

Lightweight clay brick: low thermal conductivity and good thermal insulation performance, suitable for thermal insulation layer.

IV. Erosion resistance

Low porosity clay brick: strong tolerance to acidic or neutral chemicals and excellent corrosion resistance.

Lightweight clay brick: It has weak erosion resistance and is mainly used for heat insulation.

V. Uses

Low porosity clay brick: widely used for lining of high-temperature industrial furnaces, such as steel, glass, chemical industry, etc., and suitable for corrosive parts.

Lightweight clay brick: it is mainly used as the insulation layer of industrial kilns to reduce heat loss.

VI. Production technology

Low porosity clay brick: In the production process, flint clay and other raw materials are added to strictly control the porosity and sintered at high temperature.

Lightweight clay brick: the production process is relatively simple, and the porosity is mainly adjusted by controlling the proportion of raw materials and sintering temperature.

VII. Price

Low porosity clay brick: due to the complex production process, the porosity is low and the price is relatively high.

Lightweight clay brick: the price is relatively low.

VIII. Summary

Low porosity clay brick and light clay brick have their own advantages and are suitable for different industrial scenes. Low porosity clay brick is more suitable for high temperature and aggressive environment, while light clay brick is more suitable for scenes with high thermal insulation requirements.