Washed sand-is natural silica sand washed and graded raw sand for foundry, with mud content (mass fraction) ≤ 1.0%. River sand is mainly floodplain sedimentary sand, its color is gray-white, gray-yellow, containing medium-fine sand, medium-coarse sand, coarse sand, gravel layer, and gravel layer. Its occurrence is oriented towards the river bed, and the surface layer is inclined from the river bank to the river bed, inclined from upstream to downstream. The apparent density of river sand is 2580kg/m3, the bulk density is 1569kg/m3, and the fineness modulus is 2.89. It is medium sand. Mud content: 1.34%, hard texture, clear color, is a good building material.
Machine-made sand-refers to the sand processed by sand making machines and other ancillary equipment. The finished product is more regular and can be processed into sand of different rules and sizes according to different technological requirements, which can better meet daily needs. Machine-made sand requires professional equipment to produce qualified and applicable sand and gravel. The machine-made sand production line is composed of vibrating feeder, jaw crusher, sand making machine, vibrating screen and belt conveyor. According to different process requirements, various types of equipment are combined to meet the different process requirements of customers.
Generally speaking, water-washed sand is more expensive, but it also depends on its quality. The price of high-quality sand is more expensive. Compared with water-washed sand, machine-made sand is easy to obtain. It only needs a few equipment to complete batch processing requirements. The investment prospects are broad. The upper country has imposed a restriction on natural sand. Therefore, machine-made sand is gradually replacing washed sand in various construction fields. What are the advantages of machine-made sand?
1. Quality advantages: fixed material sources and mechanized production methods ensure the stable quality of machine-made sand and the adjustable and controllable grain shape.
2. Quality advantages: hard texture, small mud content, high surface energy and hydrophilicity, and complete gradation.
3. Resource advantage: It is not restricted by region, and can take local materials, use different mineral resources and even waste resources in different places, which not only solve the problem of environmental pollution, but also improve the utilization rate of natural resources.
4. Price advantage: The price of machine-made sand varies from place to place, but it is basically cheaper than river sand.
5. Environmental protection advantages: The mining of natural sand has severely damaged the natural environment, and mining has been restricted in many places. Machine-made sand can use various tailings and construction waste to make sand, which is supported by the state and local governments.
What is the price of sand making equipment? The investment in sand making machines ranges from tens of thousands to hundreds of thousands. It is necessary to make a reasonable selection according to the user's production needs, output, and finished sand requirements. There are many sand making machine manufacturers in the market. The strength, management, sales, production raw materials, production technology, spare parts, etc. of the company will also affect the quotation of sand washing equipment. For more information, you can click: www.lydhchina.com