Quartz Particle Size Affects Slab Quality

The size of quartz particles directly affects the density, hardness, impact resistance, aesthetics, and cost of the slab. Large particles make the slab structure loose and brittle, prone to dents and cracks (when encountering hard objects), but at a lower cost. Carefully selected, uniformly sized fine particles (high-quality quartz sand) can bond tightly with resin, forming high-density, high-hardness, scratch-resistant, and impermeable high-quality slabs, but at a higher cost. Inferior particles containing low-hardness impurities will severely affect the quality.

Main Impacts:
Physical Properties (Hardness/Strength)
High-Quality Fine Particles: High SiO₂ content, complete crystal structure, tighter bonding with resin, resulting in a high Mohs hardness (up to 7), strong scratch resistance and impact resistance.

Large/Uneven/Impurity-Containing: Easily creates weak points, poor slab density, reduced compressive and impact resistance, and prone to cracking or denting.

Aesthetics and Texture
Fine and Uniform Particles:

Form a uniform particle distribution, easily achieving rich colors and textures, and a smoother, more delicate surface.

Large/Uneven Particles: Prone to a grainy texture, affecting overall aesthetics.

Processing & Cost: Large particles/coarse sand: Lower raw material cost, but easily carried over to form defects; relatively lower production process requirements.

Selected Fine Particles: Higher raw material and fine processing costs, but achieves high-quality slabs.

Durability: Inferior or impure particles, even if they resemble quartz stone in appearance, will significantly reduce wear resistance and corrosion resistance, easily leading to problems such as staining and scratches.

Key to High-Quality Quartz Stone:
High quartz sand content (over 90%).
Selected high-quality quartz sand (high hardness, few impurities, uniform particle size).

High-quality resin and advanced technology (high pressure, high temperature).

In short, particle size and quality are the core factors determining the performance and grade of quartz stone slabs. High-quality quartz stone uses carefully selected fine, high-purity quartz sand, ensuring its excellent physicochemical properties.