河卵石具有規格不均勻形狀不一的特性，所以在河卵石制沙過程中必須先經過顎式破碎機粗破和篩分之后在進行細碎制砂。河卵石具有抗壓強度高，制砂后粒型均勻級配好的優點，在建設用沙中被廣泛應用。

The characteristics of uneven shape specifications with gravel one, so in the sand making process must go through after the gravel crusher in crushing and sieving coarse crushing sand. River gravel has high compressive strength, the advantages of sand particle type uniformly graded well, with sand is widely used in the construction

河卵石細碎機主要有反擊式細碎機和球磨式細碎機，這兩類細碎機都是利用“石打石、料打料”的工作原理，具有粒型均勻、生產能力大、連續工作能力強、穩定性好、產出的沙子抗壓強度好、易損件少的優點，同時也具有設備前期投資大的缺點。

he main river gravel crusher jaw crusher and milling type crushing machine, the two kinds of crushing machine is the use of "stone dozen stone material, the working principle of play materials", the compressive strength of sand particle type uniform, large production capacity, continuous working ability, good stability, good output, less wearing parts. The advantages, but also has the disadvantage of large equipment investment.