In the sand artificial manufacturing process(sand plant), the raw materials are evenly fed into the jaw crusher machine for the primary crusher by the vibratory feeder. Then the crushing materials are conveyed to impact crusher and VSI sand making machine for secondary crushing(fine crusher). The belt conveyor transports the finally crushing materials to vibrating screen for separation. The require sand size product would be sent to the sand washing machine for clearance. The unrequested product will be returned to the sand making machine for repeated crushing until getting all the required size. The process of artificial sand making is complete.
There are mainly three steps of crushing, washing and screening in the artificial sand manufacturing process. The crusher machines of the crushing step may employ use jaw crusher, impact crusher, cone crushing, hammer crusher, sand maker. The artificial sand size different, the crushing equipment is different. The equipment of washing sand steps is a wheel sand washing machine or spiral sand washing machine. Spiral equipment washes much cleaner. Then the last step is to use sand screening machine for sand separation.
There are many materials that can make manufactured sand. For example, granite, basalt, river pebbles, pebbles, limestone, calcite, andesite, rhyolite, Diorite, diabase, sandstone, tailings, slag, quartz, etc. They vary in strength and grain size of artificial sands is because of the rock different. Exposition of the use of some rocks for making sand as follows.
The sand made of basalt mixed with concrete that can reduce the weight of concrete. And it is still very firm, also sound insulation and heat insulation. It is a good aggregate of lightweight concrete for high-rise buildings.
2. Operation and Maintenance.
Standard operation and regular maintenance can improve the sand production rate of the sand machine. If not, the crushing equipment wears parts will wear speed up, and reduce equipment life. The rate of sand making machine lessens.
Sand maker quality is good, not only energy-saving, environmental protection, and can easily achieve the expected output of equipment. JXSC who crushing machine manufacturers use new-high-wear-resistant materials and international more advanced production technology. Our equipment can meet the production requirements of customers. Provide a favorable guarantee for continuous, efficient and safe production
4. Project design.
The design of the whole sand plant must rationalize. The production plant not only requires a reasonable production capacity of the sand making machine, but also requires that the handling capacity of the jaw crusher, the cone crusher and the belt conveyor match it. Otherwise, the final sand production rate will definitely fail.
Artificial sand is produced by reducing larger pieces of aggregate into sand-sized aggregate particles. Manufactured sand can be manufactured to be a certain grain size that the buyer chooses, while natural sand can be a mix of coarse and fine grains. Manufactured sand tends to be more angular and flaky due to the crushing process. Highly angular particles tend to increase the paste content of concrete because additional lubrication is required for particles with sharp corners. Supplies of artificial sand are limited only by the capacity of those making it, and where natural sand is in short supply or logistically difficult to obtain, artificial sand is a better solution.
Natural sand has an ideal shape for use as fine aggregate in concrete. The natural sand particles are well-round and are usually nearly spherical. Spherical particles decrease the percentage of voids within the concrete mixture so no additional paste require to fill these voids. Well-shaped natural sands are ideal for workability of mixtures. Natural sand does not require more water to enhance the workability of the mixture so the amount of bleed water in the concrete will not be increased.
Long ago, when the industry was undeveloped, the river sand was not strictly controlled and could be mined by everyone. The method of mining mainly depends on manual mining. When the water is shallow, the sand-picking tools like Dustpan are put on the bottom of the river, and the sand-passing boat is pulled up bit by bit by manual force. Shipped Ashore, hand-picked to the sands.
Now, it uses mechanically mined, using gravel pumps to suck the sand directly from the river, and then loaded into trucks or piled up in coastal sand fields. But because excessive mining which destroyed the ecological environment, now, many countries are strictly prohibited from Mining River Sand. Therefore, the gravel pump is hardly used for sand mining, but for dredging, gravel suction, dredging channels, mining, and metal smelting slag transportation.