crushing production line risk

indonesia - limestone investment analysis and crushing process | fote machinery

indonesia - limestone investment analysis and crushing process | fote machinery

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.

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 ESW38095 vibrating feeder (-3mm purlin, adjustable). The waste is transported through the belt under the screen; the material above the screen is fed into the PE500750 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.


k wheel-type mobile crusher-sbm industrial technology group

k wheel-type mobile crusher-sbm industrial technology group

K Wheel-type Mobile Crusher is, also known as mobile crushing station, developed based on years of independent research and manufacturing experience of mobile crushers. In combination with user demands, K Wheel-type Mobile crusher is optimized and innovated on structural design, equipment configuration and combined application, so as to realize more flexible combinations, greatly widening the application fields and truly realizing the approaching treatment of materials.

K Mobile Crushers own 7 series and 72 machine models, and fully covers various production demands for coarse crushing, intermediate fine crushing, fine crushing, shaping, screening and sand washing. Customer can choose independent operation and combination operation like three-combination, and four-combination, etc.; compared with the other mobile crushers and screens in domestic and foreign markets, this series has more machine types and wider coverage.

Compared with a fixed production line, the K Mobile Crusher has a shorter engineering period and rapider transition, which not only reduces the investment risk and opportunity cost of the investors, but also avoids the demolition and construction after the end of project, making it more economical and environmental. In addition, the mobile crusher has excellent value-holding capacity, so that the investor can rapidly invest in a new project, or sell the mobile crusher to get money, thus reducing the investment cost.

SBM's K Mobile Crusher takes the concept of modularization. The general structural layout can realize the direct replacement of main parts without replacing the body, so as to satisfy the crushing and screening demands at different stages; if the user needs to expand the production capacity, replacing the main parts can accomplish the upgrading of mobile crusher and save reinvestment cost of the body. In addition, the wheel-type mobile crusher can move in remote and rugged areas, greatly reducing the road construction cost in earlier stage.

All actions are controlled by intensified hydraulic system so that the operator can simply and rapidly set the operating actions of the mobile crusher; in consideration that the widely used hydraulic control devices will require certain machine maintenance, SBM adopted centralized lubrication mode, and the operator can rapidly complete the maintenance on the road directly. Therefore, the operation and maintenance management will greatly save the labor cost.

There are tens of lines of numerical controlling machine tools. Operations such as steel plates' cutting, bending, planing, milling and paint spraying are all controlled numerically. The machining precision is high, especially for the core parts.

SBM, whose businesses cover production and sales, takes responsibility for every machine produced by ourselves. We can offer customers technical services about products and original spare parts to ensure the worry-free operation.

A K Wheel-type Mobile Crusher is composed of the frame assembly, automobile components, hosts & accessory equipment, power system and hydraulic electronic control system. When moving, the mobile crusher is hooked on a trailer and then move by virtue of its wheels. During installation, with the external power, the hydraulic cylinder can get controlled by the electronic control system to finish equipment installation. During operation, with external power, motors of hosts and accessories work to drive the equipment to work. Usually, materials are sent from the hopper or by belt conveyors to the hosts for crushing and screening. After being processed, finished products are transported by belt conveyors, too.

Product pictures and parameters about models, data, performances and specifications on this website are for reference only. There is a chance that SBM may make changes on above-mentioned information. For specific messages, please refer to the real objects and user manuals. Without special instructions, SBM keeps the right to explain all data involved in this website.

african mining & crushing production first, safety always amc

african mining & crushing production first, safety always amc

Operating safely is not just about compliance for African Mining and Crushing, it is an internal philosophy and non-negotiable requirement designed and implemented to protect our most important asset our employees.

And because our cultural ethos values our staff as we would our own family members, we take their safety personally and are therefore naturally motivated by more than numbers and records to keep them safe, says CEO Warwick Hughes.

Mining is a high-risk business and we must cater to this reality, which starts with education and training and the development and implementation of safety systems and procedures that operate as the backbone of every movement on site.

When considering African Mining and Crushings safety challenges, working with large rocks, moving components, heavy-duty crushing equipment and trackless mobile machines pose the greatest risk and are traditionally responsible for fatalities in the mining sector.

To minimise these specific risks, African Mining and Crushing not only complies with legislation in terms of how to operate the machinery but has incorporated additional safety measures to reduce safety risks further.

Reviewing the companys safety policy more closely, Recchia notes that effective training is delivered through experts, who in addition to safety must also understand the challenges in mining and more specifically, the specific challenges associated with African Mining and Crushings line of work.

This is a highly effective training mechanism, particularly in Africa where competency levels may be lower in more remote locations. Transferring knowledge and skills by pairing a local recruit with an experienced expatriate further drives sustainability in the sector through upskilling, Recchia points out.

A dedicated safety officer is not only there to enforce safety procedures but plays an active role on the site such as being present during the process of re-starting a machine or plant following a plant shutdown or equipment breakdown.

Recchia himself, although in charge of safety across the board at African Mining and Crushing, takes safety seriously and visits every site regularly (at least every three months) to conduct full safety assessments and audits.

In addition to a zero-fatality record, African Mining and Crushings lost-time injury (LTI) frequency rate is below the industry average, although Hughes and Recchia remain devoted to delivering an injury free company as well.

This is higher than the companys lowest record (since 2012) of 0.43 in 2014 but considerably lower than 2016 and 2017s average of 1.63 and 1.34 which Recchia notes was largely the result of twisted ankles.

African Mining and Crushing believes in reporting any and all incidents and accidents, irrespective of the severity, in order to investigate the causes and implement corrective actions, thereby striving towards zero harm.

This means providing medication to prevent disease and beyond this fogging to keep mosquitos at bay. Each area we work in is individually assessed for potential risks, and protocols are then implemented to mitigate these risks.

African Mining and Crushing is undoubtedly not only passionate about delivering optimal and cost-effective production output, but is equally committed to doing so safely ultimately contributing to the success of its clients.

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When it comes to crushing, you need speed and precision. You also need a crusher that is tough against wear and tear and suited for use with a broad range of raw materials from ores to minerals, metallurgical samples, clinker, ceramics and more.

Our innovative crushers are robust and accurate. They deliver great value and a solid performance, without the fear of constant breakdowns. Plus, smart design and engineering have resulted in the easy replacement of wear parts, saving you time on routine maintenance.

Jaw crushers easy to maintain and repair, our hardwearing jaw crushers are workhorses engineered to offer fast sample throughput with good reduction ratios. Choose from four models with feed sizes up to 85 mm, 110 mm, 170 mm and 250 mm.

Fine jaw crushers suited to high-volume mineral laboratories, our fine jaw crushers are among the most productive on the market. We offer four models with feed sizes up to 50 mm, 80 mm, 90 mm and 110 mm.

Rolls crushers the most uncomplicated and durable mid-range crushers available, our rolls crushers come with contra-rotating rolls to produce material with a tight size envelope containing a minimum of fines. We have two rolls crushers in our range choose our compact crusher with 2 x 200 mm rolls or our larger more powerful crusher with 2 x 35 mm rolls.

FLSmidth provides sustainable productivity to the global mining and cement industries. We deliver market-leading engineering, equipment and service solutions that enable our customers to improve performance, drive down costs and reduce environmental impact. Our operations span the globe and we are close to 10,200 employees, present in more than 60 countries. In 2020, FLSmidth generated revenue of DKK 16.4 billion. MissionZero is our sustainability ambition towards zero emissions in mining and cement by 2030.

dust emission from crushing of hard rock aggregates - sciencedirect

dust emission from crushing of hard rock aggregates - sciencedirect

During secondary crushing, the background concentrations were achieved at a 350 m distance for coarse particles.Dust concentrations in the limestone quarry were half of that measured in quarries processing granitic rock material.Using the same setup, it was shown that crushing generates more dust and more coarse particles than drilling.

Dust constitutes one of the major environmental concerns near many aggregate quarries, with crushing often being the most significant source. In this study, dust emissions and dispersion measurements were conducted under real operating conditions at six aggregate quarries in southern Finland. Five of them represent granitic rocks and one a limestone quarry.

Dust concentrations during crushing were measured at varying distances with time intervals of five seconds. The variation in dust concentration was high within all the measured distances, ranging from 10 to 200m.

Crushing produces mainly coarse (TSP and PM10) dust particles, which settle near the dust source. The mass concentration of coarse particles in this investigation varied from few tens of g/m3 to over 6.5103g/m3 downwind from the crusher.

The mass concentration of fine particles (PM2.5 and PM1) ranged between ten g/m3 and few hundreds of g/m3 downwind from the crusher. The fine particles originated mainly from machinery used in the quarries and remote sources, such as nearby traffic.

In quarries operating with secondary crushing, the background concentrations were achieved approximately from a 350m distance for coarse particles. Local dust sources, such as hauling, impacted the results inside the quarry. Crushing produced more dust compared to comparable studies for drilling. The dust concentrations at the limestone quarry were approximately 50% of concentrations measured at quarries with granitic rocks.

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