Nowadays, natural sand is running out by the huge demand. The natural sand resources formed by hundreds of thousands of years in many countries and regions are almost exhausted.
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As a result, natural sand costs are getting higher and higher and cannot meet the increasing market demand. In this case, the artificial sand came into being.
Artificial sand, also called crushed sand or mechanical sand m sand, refers to rocks, mine tailings or industrial waste granules with a particle size of less than 4.75 mm. It is processed by mechanical crushing and sieving.
In China, the artificial sand was mainly used in the construction of hydropower systems. For example, the Three Gorges Project and the Yellow River Xiaolangdi Project used artificial sand to prepare concrete. Due to the remote environment of the hydropower project and the high quality of sand and gravel, the projects have taken the materials locally.
Many Indian states have decreed the use of crushed sand in infrastructure construction because of its high compressive strength and cohesion and the adverse environmental effects of river sand mining, which will greatly boost the demand for artificial sand.
There are both natural and human factors in the increasing demand for artificial sand. The former is that the natural sand is about to run out, while human factors include peoples requirements for environmental protection and the need for high-quality concrete.
With the development of infrastructure, the natural sand resources formed by hundreds of thousands of years in many countries and regions have been almost exhausted, which has affected the further development of construction projects.
Driven by huge interests, natural sand has been indiscriminately mining, which changes the river course, affects the safety of river embankments, destroys the living environment of fish and contaminates the groundwater. The crushed stone sand is an important alternative resource to change this phenomenon.
In the process of mining river sand, it often produces a large amount of tailings which is not used reasonably. Especially in small mines, the tailings are piled up at random, occupying land and polluting the environment.
Besides, in urban planning and construction, a large amount of construction waste is generated, which actually can be crushed by the crushers to produce the artificial sand and aggregates for promoting resource utilization.
Artificial sand is one of the main raw materials for concrete, mortar and corresponding products. Traditional sand and stone production lines are generally small in scale, lacking long-term planning and design, and can no longer meet the needs of current development. Therefore, a new type of artific.
Artificial sand is one of the main raw materials for concrete, mortar and corresponding products. Traditional sand and stone production lines are generally small in scale, lacking long-term planning and design, and can no longer meet the needs of current development. Therefore, a new type of artificial sand production line came into being, and standardized design is imperative.
The design of the gravel production line involves mines, general plans, processes, electrical automation, civil engineering, water supply and drainage, HVAC, environmental protection, budget estimates, and technical economy.
Based on the quality of the existing mines or newly purchased mines, the planned mining period is estimated to be 15 to 20 years. Consideration should also be given to placing the sand and gravel plant near the quarry in order to reduce the transport distance of raw materials. When the quarry and the main user are far away, rough crushing should be arranged in the quarry, and the intermediate material after the rough crushing is sent to the main plant area through the conveying equipment to continue processing and manufacturing.
The electrical automation design should adopt advanced and reliable DCS or PLC control system, with a high level of automation, in order to achieve the goals of high efficiency, energy saving, stable production, optimized control, etc., and minimize the number of operating posts and reduce production costs.
Under the premise of meeting the production requirements, the civil engineering design should be arranged in the open air as much as possible to minimize the cost of civil engineering. Architectural design should strictly abide by the current relevant national building design codes and standards, pay attention to ventilation, heat dissipation, sound insulation, and shock absorption measures in the workshop, and adopt technical measures such as fire prevention, explosion protection, waterproof, and moisture resistance.
In the field of mining, by analyzing mine exploration data, formulating mine development and utilization plans, rational use of mine resources, consideration of recultivation and forestry, avoiding adverse geological disasters, development and utilization, protection of ecology, resource conservation, and environmental friendliness.
Process design must first determine the production scale, perform process balance calculations, reasonably determine process equipment capabilities, operating rates, perform material balance calculations, and reasonably determine the storage methods and storage periods for various materials.
Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. The composition of sand is highly variable, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal settings is silica silicon dioxide, or SiO2, usually in the form of quartz.
Sand production line is the mining equipment units that make raw gravel, silica, granite, limestone and quartz materials into aggregate and sand which will be used in construction directly with different size and even cubical shape. Sand production line is widely used in construction projects like building, road construction and railway construction, etc.
ISO 14688 grades sands as fine, medium and coarse with ranges 0.063 mm to 0.2 mm to 0.63 mm to 2.0 mm, sand is commonly divided into five sub-categories based on size very fine sand 116 mm diameter, fine sand mm mm, medium sand mm mm, coarse sand mm 1 mm, and very coarse sand 1 mm 2 mm. These sizes are based on the Krumbein phi scale, where size in -log2D D being the particle size in mm. On this scale, for sand the value of varies from 1 to 4, with the divisions between sub-categories at whole numbers.
The sand is distributed in South Africa,india, Spaine, Swedene, Thailand, United States, Venezuela, Zimbabwe, Nigeria, Kenya, Indonesia, Pakistan.
Brick Manufacturing plants add sand to a mixture of clay and other materials for manufacturing bricks.
Mortar Sand is mixed with cement and sometimes lime to be used in masonry construction.
Concrete Sand is often a principal component of this critical construction material.
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