Difference between crusher sand and river sand

Meaning of crusher sand

Crusher sand is a kind of sand., mainly refers to the formed by sand crushing machine. What is the raw material of the mechanism sand? In general, as long as the hardness of the stone can be quite. Exactly when the compressive strength to meet the requirements of the igneous rocks, metamorphic rocks and sedimentary rocks. When water conservancy project construction area more in field, the mechanism of sand should first consider the use of local materials to save costs, if the combination of stonework excavation spoil is better. Used as a processing mechanism of sand of the parent rock, compressive strength shall comply with the provisions of GB / T14685 - 2001 the building of pebble and gravel ", namely the saturated compressive strength: igneous rocks should not be less than 80MPa, a metamorphic rock should not be less than 60MPa and sedimentary rock should not be less than 30 MPa.

Mechanism of sand is relative to the river sand and other natural sand. The natural sand is the main forces of impact, such as sand, sand etc.. However, due to environmental protection and other reasons, the cost of natural sand is getting higher and higher, while its profit is getting lower and lower, and the market is getting smaller and smaller. So the mechanism is more and more popular with the market, the market share is also getting higher and higher!

Mechanism sand is artificial sand, is not the natural sand, with the sand pouring concrete is the mechanism of sand concrete.

Mechanism sand and natural sand contrast

With the natural sand is reducing day by day and protected by the policy, the mechanism of sand (that is, through the sand making machine, impact type crushing machine, and other professional sand making equipment crushed gravel materials) market has shown a great potential and vitality. Especially in recent years, the construction market demand is huge, and promote the rapid development of sand and gravel market. Using the mechanism of the production of high efficiency sand making machine, the unique advantages of the sand are gradually replacing the market, and become one of the best sources of building materials.

1.Firmness and durability test. The strong performance of the mechanism sand is slightly worse than that of the river sand, but it still achieves the T GB/ 141684293 standard, and it is not a problem to use in the ordinary concrete. But in often suffer from impact friction of concrete components in use, in addition to must be mixed with additives, also should control concrete cement sand ratio and sand crushing index and the content of stone powder.

2.The mechanism of sand stone powder content on the properties of the cement mixture. Through the test of cement, mortar test, concrete test, machine-made sand used in the preparation of sand concrete and natural no big difference, generally speaking, under the same slump the premise, mechanism of sand water to slightly larger, but according to construction conditions and structures and transportation and other factors to consider. However, the strength of concrete is basically the same. The sand ratio should not be too high to prevent the concrete strength and durability of concrete.

3.The grain size of the mechanism is more irregular, in the use of cement and other structural bonding, often have better adhesion, more compression, the service life is longer.

In the process of engineering construction, sand as an important part of the concrete structure, the quality of the quality of the whole project has a decisive influence on the quality and durability. To meet with sand performance of the premise, economic and feasible scheme selection, not only to meet the requirement of construction quality, but also effectively control the cost of production, so in areas lacking natural sand resources using counter type efficient fine crusher and impact crusher manufacturing high-quality manufactured sand concrete construction production is not only feasible, the comprehensive benefit is significant. At the same time in the use of mechanism sand, also can carry on the research and experiment of building materials, accumulate experience, lay the foundation stone for the development of the discipline. 

We also make a professional, a large number of about their performance, economic aspects of comparative analysis, facts have proved that the mechanism of sand is not only a wide range of sources, material stability, easy operation and control, good performance, can meet the demand for construction, but also economically feasible, is the development direction of future construction market, for the protection of the natural environment is also very beneficial. 

The basic process of mechanism sand production line 

Stone by vibrating feeder evenly sent to jaw crusher are thick broken, rough after the destruction of the material by belt conveyor into sand making machine for further broken, after fine crushing material is transported to vibrating screen for screening, to finished product size requirements of the material is fed into the cleaning sand machine wash, after cleaning by the finished product conveyor belt output is finished; did not reach the product size requirements of material from the vibration sieve return sand making machine re processing, forming closed-circuit circulation many times. Product size can be combined and graded according to the needs of users. If the choice of production technology, can be equipped with thick powder separator and dust removal equipment. 

Mechanism of the main equipment of the production line of sand 

1.Vibration feeder: 

Vibrating feeder is linear vibrating feeding device has features of stable vibration, reliable operation and long service life, crushing machinery for continuous and uniform feeding, and the material of coarse screening, widely used in mineral processing, building materials, chemical industry, broken equipment in the joint. 

2.Jaw crusher: 

Jaw crusher referred to as broken jaw the series of crushing machine has the advantages of simple structure, reliable work, convenient maintenance, production and maintenance cost low characteristic. Widely used in mining, metallurgy, building materials, chemical and other industries, is suitable for crushing the compressive strength of not more than 300MPa of all kinds of materials.  

3.Impact type sand making machine: 

Impact type system sand machine (referred to as sand making machine) is a kind of material by the impact crusher is my company to introduce foreign similar products of advanced technology development with the international advanced level of high energy consumption equipment, is currently at home and abroad is the most advanced, the most ideal, fine and shaping equipment. Widely used in metal and nonmetal ore, cement, refractories, abrasives, glass raw materials, construction aggregate, artificial sand and various metallurgical slag crushing and coarse grinding operation, especially on the hard, hard and abrasive materials such as silicon carbide, corundum, sintered aluminum vanadium soil, magnesia and other, than other types of crusher is more superiority. The use and protection of hydraulic crusher facilities, can handle various metallurgical slag in road building sand, gravel and suitable. 

4.Wheel bucket sand washing machine: 

Bucket wheel sand washing machine, also known as sand washing machine, which can separate sand washing the dirt and debris, the novel sealing structure, overflow weir plate, reliable transmission device ensure the effect of cleaning and dewatering, 

Roads, water, electricity, construction and other industries washing, grading, in addition to miscellaneous, and fine-grained and coarse-grained materials washing operation, the building and road construction with sand stone is particularly suitable for.

 

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