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In recent years, natural sand resources are in short supply, which brings difficult mining and high cost. Therefore, many people have turned their attention to machine-made sand. As a substitute for natural sand, machine-made sand is made from a variety of stones. What kind of stone is suitable for sand making? How to configure the stone sand making production line?
According to the existing sand making process, most stones on the market can be used to make sand, such as pebbles, granite, limestone, marble, basalt, etc., which are common in the sand and gravel industry, and solid wastes such as coal gangue and construction waste can also be used to make sand. These stones are stable in nature, up to standard hardness, rich in reserves, and the effect of sand making is also very good, which meets the standards of construction sand. Note: Although most stones can be used to make sand, not any stone can be used. For example, soft rock and weathered rock are not suitable for sand making.
The configuration of the stone sand production line needs to be combined with the actual production needs of the user, and only reasonably designed production line can produce standard machine-made sand. One of the most important factors in the configuration of the production line is the hardness of the raw materials, which decides the choice of the second-stage crushing equipment. Generally, cone crushers are used for stones with higher hardness, while impact crushers are more suitable for those with lower hardness. According to this classification, the following two stone sand production line configuration schemes are introduced:
Common stones with higher hardness include granite, river pebble, basalt, iron ore, etc. This type of stone wears the equipment a lot during crushing, which will reduce the service life of the equipment, so choose good wear resistance and easy maintenance In general, the equipment is mainly different from the second-stage crushing equipment, and the cone crusher is mostly used.
150 tons of granite sand production line per hour, the crushed granite feed size is ≤90mm, the jaw crusher is for coarse crushing and the cone crusher is used for medium and fine crushing, and then the VSI sand making machine is used for sand making and shaping. The entire sand making line is durable. Operation and maintenance are also very convenient, high production efficiency, energy saving and environmental protection.
Common stones with lower hardness include limestone, dolomite, shale soil, etc., including coal gangue, construction waste, which are also materials with lower hardness, which are easier to be crushed and have less wear on the equipment. The second-stage crushing equipment has more options for impact crusher. The impact crusher requires regular replacement of the hammer head. However, the price of the equipment is relatively low, the finished material particle size is adjustable and controllable, the particle shape is good, and it is energy-saving and environmentally friendly.
A production line with a capacity of 200 tons per hour of limestone sand making, the size of the crushed limestone is ≤500mm, and the size is larger. Firstly, the jaw crusher is used for coarse crushing, then the impact crusher is used for medium and fine crushing, and then the sand making machine is used for sand making and shaping. This production line need low cost, and the production efficiency is high. Besides, the finished material has good grain shape and high quality.
The stone sand production line directly affects the quality of machine-made sand. Only with reasonable configuration can produce machine-made sand that meets the standard. CFTC supports tailor-made production lines. You only need to click the online service and professional engineers will be arranged to develop a stone-sand-making production line program for you.
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