At present, natural sand resources are scarce and mining costs are gradually increasing. Even in some places, mining is no longer allowed. In this situation, the ubiquitous river rocks have attracted the attention of the sand and gravel industry and have gradually become the new darling of the sand and gravel industry. River rock crushing machines are also becoming more and more popular. Today, the editor will introduce to you what are the river rock crushing machines. Does the crushed river rock meet the standards for construction sand？

River stone, as the name implies, is the rocks in the river. From its popularity, it can be seen that the crushed river rock meets the standards of construction sand.

River stone is the general name of river rocks, pebbles and other stones. After long-time polish and impact of water, its appearance is relatively smooth, its quality is hard, and its wear resistance and corrosion resistance are strong. It is suitable for crushing sand and the finished material after crushing meets the standard of construction sand. River rocks are also widely used in various industries such as construction, highways, railways, water conservancy and hydropower. Moreover, river rocks are widely distributed and more common, and mining will be easier, so the mining cost will be much lower than that of natural sand. According to the stage of crushing, I recommend three common used river rock crushing machines in the market, which is jaw crusher, cone crusher, and roller crusher.

Coarse crushing: jaw crusher

Jaw crushers are used in most stone production lines for the first stage of crushing. Jaw crushers are often used for coarse crushing of materials. They can crush materials as large as 1500mm, and the discharge range is also relatively large, ranging from 10-400mm. The output of the jaw crusher is also very large, with an hourly capacity of 2200 tons. It is suitable for various industries such as mining, building materials, highway, railway and so on. It has the characteristics of large output, wide application, stable and reliable operation, etc.

Medium crushing: cone crusher

Cone crusher, a common two-stage crushing equipment, usually is used for fine crush of river rocks. The feed of the cone crusher is smaller than the primary jaw crusher, no more than 230mm, and the output will be smaller, 3-60mm. The hourly output of the cone crusher is 12-700 tons, often following the jaw crusher for medium crushing. Cone crusher machine is suitable for metallurgy, construction, roads and other industries. It has the characteristics of large crushing ratio, high efficiency, good shape of the finished product, long service life, environmental protection and energy saving.

Fine crushing: double roller crusher

For the fine crushing, the roller crusher is chosen because its feed and output are relatively small. The feed is no more than 30mm and the output is only 2-10mm. It is suitable for fine crushing of materials and crushes the materials into sand. The output of the roller crusher is 5-110 tons per hour, which is suitable for various industries such as cement, chemical industry, electric power, metallurgy and so on. The structure of the roller crusher is relatively simple, and the floor space is small, and the operation and maintenance are relatively convenient. At the same time, the equipment is equipped with a dust-proof plate, which has good sealing performance and is not easy to cause dust pollution.