Impact sand making machine and rod mill sand making machine are two mainstream sand making equipment, each of which has unique advantages and is suitable for different production scenarios.
The impact sand making machine adopts the working principle of "stone to stone" or "stone to iron", and the material is ejected into the crushing chamber through a high-speed rotating impeller to achieve crushing.Its significant advantages include：
The finished product has excellent grain type: the sand grains produced are multi-edged and angular, and the grade is reasonable, which meets the standards of sand for construction.
High production efficiency: stand-alone production capacity can reach 50-600 tons/hour, suitable for large-scale production
Flexible adjustment: by adjusting the impeller speed and feed volume, the fineness modulus of the sand can be intuitively controlled
Good environmental protection performance: noise is less than 70 decibels, less dust, which is conducive to the health of operators
The initial investment is low: the cost of equipment transportation, basic production and installation is only about 20% of that of the rod mill.
The rod mill uses the rolling grinding effect of steel rods and materials to produce fine sand. Its outstanding advantages are reflected in：
Uniform and stable particle size: the fineness modulus of the finished sand is stable at 2.6-3.0, and the stone powder content is less than 10%.
Less over-pulverization phenomenon: the selective crushing of steel rods reduces the phenomenon of over-pulverization in the sand making process
No need for supporting screening: it can be produced in a fully open circuit, simplifying the process flow
Suitable for special requirements: projects with high requirements for sand particle roundness (such as concrete for hydropower stations) have better results
Selection suggestion
When choosing equipment, material characteristics, production scale and finished product requirements should be considered comprehensively.Impact sand making machines are more suitable for construction sand projects with medium hardness materials and high particle size requirements; while rod mills are suitable for small boutique sand mills with special requirements for sand grain uniformity and roundness.
