Mechanical sand is relative to natural sand (e.g. river sand). Natural sand is mainly caused by the impact of natural forces, such as river sand, sea sand and mountain sand. Mechanical sand is rock particles with a grain size of less than 4.75 mm made by mechanical crushing and screening after decontamination treatment. Limestone is an industrial rock with a wide range of applications and a large number of industrial uses. It is widely used in metallurgy, chemical industry, construction, building materials, environmental protection, agriculture, food and other fields. Using limestone production machine to process sand has been widely used in industry. The use of limestone processing sand making machine can effectively increase the amount of limestone block mineral production, reduce the amount of limestone waste residue, with obvious energy saving and emission reduction effect.
Limestone mechanism sand production process
Limestone processing is mainly crushing, grading and the production of lime, slaked lime, precipitated calcium carbonate, carbon dioxide and so on. Limestone is generally used in dry crushing process, for metallurgy, road limestone, the ore can be crushed and screened.
Limestone or limestone raw ore grade can generally meet the requirements of various industrial sectors, generally only need to carry out a simple washing, that is, the use of washing - crushing - screening or grading and other methods to deal with limestone or limestone ore.
The process flow of mechanism sand production is as follows: feeding → coarse crushing → medium and fine crushing → screening →
sand making → screening → sand washing → finished product.
The required equipments are vibrating feeder,
jaw crusher, impact crusher,
cone crusher, vibrating screen,
sand making machine, sand washing machine and conveyor equipment.
Limestone mechanism sand advantage
Limestone mechanism sand is made from limestone quarry waste, waste residue, stone powder and other waste and excess resources, through mechanical crushing, washing, screening, according to the above process processing limestone mechanism sand has the following advantages:
1, mechanism sand can effectively and stably according to national standards and engineering quality requirements to control the sand particles and other technical indicators to meet the engineering requirements.
2, mechanism sand particles, fineness modulus can be adjusted, according to the needs of the project, combined with the good points of the parent material and concrete requirements, adjust the fineness modulus and particles of the mechanism sand.
3, mechanism of sand particle shape angular, rough surface, conducive to bonding with cement and other cementitious materials, conducive to the improvement of concrete strength.
4, mechanism of sand production can be combined with the production process of crushed stone, is conducive to the comprehensive utilization of mineral good source, reduce pollution, thus greatly reducing the production cost of mechanism of sand.
Of course, the preparation of sand and gravel aggregates in various regions using what kind of lithology of the rock also need to be adapted to local conditions, depending on the specific circumstances!
