There are several main difficulties in processing basalt into machine-made sand:

Basalt crushing equipment consultation

(1) Due to its high compressive strength, excellent toughness, extreme hardness and strong abrasiveness, basalt makes the crushing process extremely difficult, which significantly limits the actual production efficiency of the crushing equipment, and it is often difficult to achieve the nominal processing capacity of the equipment. capacity, which puts forward higher requirements for crushing technology and equipment selection.

(2) After basalt is crushed, the particle shape of the aggregate is poor and the proportion of flakes is high. It is extremely challenging to control the needle flake content in the finished coarse aggregate to within the specification standards, which places higher requirements on the crushing process and screening technology. To ensure that the aggregate quality meets the project requirements.

(3) When basalt is made of machine-made sand through vertical shaft crushing, the part with a particle size less than 5 mm has more coarse particles and stone chips and less fine sand, resulting in a larger fineness modulus and insufficient stone powder content. However, the use of rod mills to make sand faces the challenges of low production capacity and high energy consumption (water, electricity, steel consumption). The sand making process is complex and inefficient.

Since this system requires not only sand for normal concrete but also sand for roller compacted concrete, which has a high stone powder content (12%-18%), it is difficult to select the sand making process for this system.