Indonesia is the largest country in ASEAN with a land area of 1.919 million square kilometers and a marine area of 3.16 million square kilometers. The mineral resources are very rich in Indonesia, especially the limestone resource.[email protected]
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In recent years, the limestone mining industry in Indonesia has risen greatly, which not only drives the economic development of Indonesia, but also provides a large number of job opportunities, and brought huge business opportunities for the limestone crushing industry.
Indonesia's limestone reserves are about 34 billion tons, and proven reserves are about 28 billion tons, mainly distributed in the south and north of West Java, East Java, Papua in the east, Bali and Sumatra. It is the main non-metallic mine in Indonesia and ranks second after the coal mine.
On December 16, 2008, the Indonesian Parliament passed the new mining law. On January 12, 2009, the Indonesian President issued a new law No. 4 to replace Act No. 11 of 1967, which was implemented in the country for 41 years.
The most essential reform of the new mining law is that it replaces the long-term implementation of the Contract of Work (COW) and the coal mining enterprise work permit system (PKP2B) in Indonesia with a new licensing system.
In order to attract more funds to its domestic mining sector, currently, Indonesia government is launching a series of attractive policies and constantly revising and improving mining investment laws.
At present, the construction industry is Indonesia's second largest industry whose output value accounts for about 10% of GDP. The average growth rate had reached 7% between 2009 and 2013, which is the main driving force for Indonesia's economic growth.
The infrastructure is also the main part of the construction industry. The output value of infrastructure construction in 2013 accounted for 53.8% of the total output value of the construction industry.
Therefore, Indonesian governments have made infrastructure construction a priority for government investment. As the basic raw material for the production of cement, the limestone is only increasing in demand.
The Asia-Pacific mining risk return rankings published by Business Monitor International show that Indonesia and Australia rank first and second in the Asia-Pacific region with their rich mineral resources and stable investment environment.
The physical properties of limestone are small hardness and high brittleness with low silicon content and low abrasiveness. Therefore, the limestone is relatively easy to crush with low production cost.
According to different uses, limestone needs to be crushed into particles of different sizes: the products of 20-50mm size are mainly used for burning lime and the products of -20mm size can be ground into different meshes to meet the needs of various industries such as power plants.
Limestone is mined by blasting. Due to the blasting distance and other reasons, the particle size of the raw materials varies, and during the mining and transportation process, the the soil and other debris are included.
In summary, considering the advantages and disadvantages of several crushing methods, plus the physical properties of limestone, and to meet the maximum size of 20-50mm grain products, equipment with a relatively small crushing ratio should be selected. Thus, priority is given to the jaw crusher.
The initial plan is to use two-stage jaw crushers. The size of the discharge port of a section of jaw crusher can be adjusted larger slightly. After the crushing, the grade of +50mm is sent into the second-stage jaw crusher to reduce the fine powder. The two-stage crushers achieve a closed loop.
The limestone production line is a common production line in the heavy industry equipment, which is favored and chosen by many customers. The common limestone crushing production line includes vibrating feeder, jaw crusher, belt conveyor and vibrating screen.
The raw materials are transported from the warehouse through the ESW380×95 vibrating feeder (-3mm purlin, adjustable). The waste is transported through the belt under the screen; the material above the screen is fed into the PE500×750 jaw crusher, then transported into 4YK1848 vibrating screen for sieving;
Investors can get a good crushing effect by adopting the appropriate process configuration and equipment selection. In combination with the principle of "breaking more and less grinding" in the limestone production line, it is necessary to produce the best particle size in the stage of crushing limestone.
Henan Fote Heavy Machinery specializes in the production of mining equipment for 40 years. It has rich crushing experiences in the production of limestone mining equipment with advanced crushing technology and complete after-sales service, and is favored by domestic and foreign customers.
As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories
Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.
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