What Is the Reduction Ratio of the Crusher?

 When purchasing crushers, especially jaw crushers for coarse crushing, we often see a word: large reduction ratio. So, what is the reduction ratio of the crusher? What are the commonly used calculation methods?

What is the reduction ratio of the crusher?

    After the ore is blasted, there are mostly large stones of different sizes. They must be crushed by the crusher before they can meet the needs of the project. So do these stones need single-stage crushing or multi-stage crushing? The reduction ratio is a very important factor.

The reduction ratio refers to the ratio of the feed particle size to the product particle size in the crusher, which indicates the degree of material crushing, which directly affects the energy consumption and processing capacity of the crusher.

Commonly used calculation method of reduction ratio

    The reduction ratio has a professional calculation method, which is divided into three types according to different situations:

1. Particle size reduction ratio:the ratio of large block size before and after crushing

Calculation formula:I = larger diameter of feeding material / larger diameter of finished product

    Due to the different habits of each, the large-granularity value method is different. British and American take the sieve width at which 80% of the material can pass through the sieve hole as the large particle size diameter. China and the Soviet Union, 95% of the material can pass through the sieve hole width as the diameter of the large particle size.

Application object:This calculation method is often used in quarries because the width of the feed port of the crusher should be determined according to the large particle size of the ore in the design.

2. Surface reduction ratio:the ratio of the width of the crusher inlet to the width of the outlet

Calculation formula:I=0.85B/S (inlet width/discharge width referred to here)

0.85 is the width coefficient of the crusher to accommodate the material. The value S of the width of the discharge port: the coarse crusher is different from the medium and fine crusher, and the former takes the larger width; The latter takes the smaller width.

Application object:Because this method does not need to do screening analysis of a large number of materials, the approximate calculation can be carried out until the width of the feed port and the discharge port of the crusher, which is simple and fast, so it is widely used in production.

3. Average reduction ratio:the ratio of the average particle size of the material before and after crushing.

Calculation formula:I=average particle size of material before crushing/average particle size of material after crushing

Application object:Because the size and shape of the ores before and after crushing are different, they can only be represented by the average particle size. Therefore, the crushing ratio calculated by the average particle size can reflect the degree of crushing more truly, so it is mostly used in theoretical research.

    In actual production, the appropriate calculation method of the reduction ratio should be selected according to the specific work content of the crusher.

The Diamond Mine Crushing Project with a Capacity of 150 T/H was Launched in the "Land of Gold" - South Africa

 South Africa is one of the world's largest diamond producers and is renowned for its high-quality diamonds. Diamonds are one of South Africa's most famous treasures. South Africa's diamond production once accounted for 90% of the world's diamond production, and the Kimberley Diamond Mine is an important pillar of the South African diamond industry. The Kimberley Diamond Mine is located in the Cape Province of South Africa and is a famous diamond in the world capital, Vanguard Machinery's 150 T/H diamond ore crushing project is located here.

Diamond ore is a metal ore with high hardness. A jaw crusher can be used for coarse crushing, and a cone crusher is required for medium and fine crushing. However, due to limited initial investment and special site conditions, the customer specified an MBP semi-mobile as the secondary crusher. Vanguard Machinery engineer recommended the MBP modular mobile crushing plant that combines "performance, economy, and innovation" based on the actual needs of the customer. This series of mobile crushing plants is a multi-functional integration consisting of one or several crushing and screening unit modules frame structure solutions. It is particularly suitable for multi-point quarries that require regular movement of equipment between different locations. It has significant advantages such as compact structural design, space-saving, no need for foundation installation, and the ability to be quickly relocated and reassembled according to construction needs.

Project overview:

Material: Kimberlite, feed 500mm

Capacity: 150 T/H

Equipment configuration: MBP106 jaw crushing plant + MBP250 impact crushing plant

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Main advantages of MBP series mobile crushing plant:

1. It takes a short time to put into use and creates profits faster (the equipment production cycle is 35 days);

2. Can enter the site at any time and quickly enter production status;

3. The capacity of the entire production line is equivalent to that of fixed equipment, and the power consumption of mobile equipment can be reduced compared with fixed equipment;

4. The power can choose to use a dual-use power mode of gasoline and electricity, and the power sources are diverse;

5. The entire production line only requires 4 people to operate.

About Us:

Vanguard Machinery is a professional manufacturer focusing on the processing of comprehensive supporting equipment such as aggregate production, construction sand, and urban construction waste treatment. The company's main series of products include cone crushers, sand making machines, jaw crushers, MBP semi-mobiles, mobile crushing plants and other equipment, which are widely used in mining, cement, highways, electric power, metallurgy, coal and other industries. The company has won unanimous praise from domestic and foreign customers over the years, and its products are exported to the United States, Russia, Kazakhstan, Tajikistan, Brazil, Argentina, Vietnam, the Philippines, India, Pakistan and other countries.

Winter Guardian: Tips on the Care and Maintenance of Mining Equipment in Low-temperature Environments

 As the core equipment in the production process, the crusher's stable operation is crucial to the entire mining operation. Especially in the cold winter, problems such as the solidification of lubricating oil, hardening and wear of lubricating parts, and difficulty in starting equipment frequently occur, which brings considerable trouble to mining production. This article aims to reveal to you the core maintenance strategies of mining crushers in low-temperature environments, ensuring that the equipment operates stably and efficiently in severe cold, and safeguarding mine production.

1. Selection of lubricating oil and solution to solidification problems

(1). Lubricating oil selection:

In low-temperature environments, low-temperature lubricating oil should be selected. Their viscosity changes less with temperature and has better fluidity at low temperatures. They can effectively prevent solidification and ensure that equipment is effectively lubricated and protected in low-temperature environments. Extend the service life of the equipment and improve the reliability and stability of the equipment. Common low-temperature lubricating oils include winter-type engine oil, grease, etc. In actual applications, appropriate low-temperature lubricating oil products are selected based on the specific working conditions, ambient temperature and requirements of the equipment.

(2). Solve the problem of lubricating oil solidification

1) Choose low-temperature lubricating oil to ensure that it still has good fluidity and lubrication performance in low-temperature environments;

2) During the operation of the equipment, the oil temperature adjustment device or preheating system is used to keep the lubricating oil temperature within an appropriate range to avoid solidification caused by too low oil temperature;

3) Regularly clean the oil and dust on the surface of the equipment and check the lubrication system regularly to prevent impurities and pollutants from entering the lubrication system, ensure smooth pipelines, and prevent lubricating oil from solidifying in the pipelines and causing blockage;

4) According to the usage of the equipment, replace the lubricating oil regularly. This can prevent the lubricating oil from aging, being contaminated or mixed with impurities, and maintain its good lubrication performance and fluidity.

2. Solve the hardening and wear problems of lubricating components

In low-temperature environments, the brittleness of materials increases, which can easily lead to hardening and wear of lubricating components, such as bearings, gears, bearing bushes, etc. This not only affects the normal operation of the equipment but may also cause malfunctions and even interrupt production. Therefore, we must attach great importance to the maintenance of lubricated components in low-temperature environments.

For the hardening and wear challenges of lubricated components, the following solutions may be considered:

(1). Lubrication and cooling: Ensure that the lubricating components of the equipment are fully lubricated during operation to reduce friction and wear. In addition, in low-temperature environments, the selection and supply of lubricating oil should be appropriately adjusted to ensure the lubrication effect.

(2). Regular maintenance and replacement: Regular inspection, cleaning and maintenance of lubricating components. According to the usage and wear degree, damaged or severely worn lubricating components should be replaced in time to ensure the normal operation of the equipment. At the same time, sufficient spare parts should be stored in advance to ensure timely supply when lubricating components need to be replaced. In addition, according to the operating conditions of the equipment, promptly adjust the position of the lubricating parts and the tightness of the fasteners to ensure that they are in good working condition.

(3). Choose high-quality products and services: Choosing strictly verified lubricating component products can provide stable support for mining equipment under harsh conditions and ensure production continuity and stability. At the same time, choosing a professional mining equipment maintenance and maintenance service team can provide comprehensive technical support and guarantee.

3. Solving difficulties in starting equipment

In low-temperature environments, mining equipment often faces huge challenges during the start-up phase, mainly due to several key factors: the significant increase in lubricating oil viscosity and the too-low temperature of the motor, resulting in a significant increase in resistance when the equipment is started, thus causing It is difficult for the equipment to start and operate normally, which not only affects production efficiency and equipment performance but may also increase maintenance costs and safety risks.

The following are several solutions to the problem of difficulty in starting mining equipment in low-temperature environments:

(1). Select lubricating oil suitable for low-temperature environments to ensure that key parts of the equipment are well lubricated and effectively reduce the friction resistance of key parts of the equipment, thereby ensuring smooth start-up and operation of the equipment;

(2). In a low-temperature environment, too low a temperature of the motor may cause startup failure. The motor can be preheated in advance to reach a suitable operating temperature to ensure that the equipment can start smoothly.

(3). Install heating equipment or use insulation measures to increase the overall temperature of the equipment and reduce starting resistance. These measures will help reduce the viscosity of the lubricating oil and ensure that the motor operates at a suitable temperature.

Facing the challenge of low-temperature environments, mining equipment will always encounter many problems, but as long as we adopt professional solutions, we can easily solve these problems. Through professional and reasonable operation and maintenance, we ensure that mining equipment can successfully cope with various extreme conditions and maintain stable and efficient operation, providing solid technical support and guaranteeing the continuous and safe production of mines.

What is the Sand Production Rate of Granite Sand Making? How is the Granite Sand Making Production Line Configured?

 Granite is a hard igneous rock, mainly composed of quartz, feldspar, mica and other minerals. Its Moh's hardness is 5-7 with high strength, corrosion resistance, wear resistance and other properties. After sand making treatment, granite can be made into sand with excellent grain shape and uniform particle size. This kind of sand is an important construction material that can meet the demand for high-quality aggregates in engineering construction and also provides a reliable material basis for various engineering projects. In this article, we will discuss sand production rates, influencing factors, and typical production line configurations for granite sand production.

1. Sand production rate and influencing factors of granite sand making

The sand production rate of granite sand making is mainly affected by factors such as rock properties, rock size, crushing methods, and sand making equipment. According to relevant literature reports, the sand production rate of granite sand making is generally between 30% and 50%, that is, each ton of granite can produce 0.3-0.5 tons of sand. However, actual sand production rates may vary due to various factors.

Among them, the properties of rocks such as hardness and toughness have a great influence on the sand production rate, while the crushing method and sand making equipment can increase the sand production rate by selecting appropriate models and parameters.

(1) . Hardness and toughness

Generally speaking, the higher the hardness of granite, the more difficult it is to crush with the relatively low sand production rate. The harder and less tough granite is easier to crush with the relatively high sand production rate.

(2) . Rock size

The size of the rock is an important factor affecting the sand production rate. Generally, the larger the particle size of granite, the more difficult it is to crush. It requires greater crushing force and grinding force to crush it into sand and with a relatively low sand production rate. If with too large granite particles, it will increase equipment wear and energy consumption and reduce production efficiency. Therefore, in the process of making granite sand, granite of appropriate size needs to be selected as raw material according to the actual situation.

(3) . Other mineral content

The content of other minerals in granite will also affect the sand making effect. For example, if it contains higher amounts of mica, feldspar, quartz and other minerals, it may reduce the sand production rate.

2. Granite sand making production line configuration

The granite sand making production line configuration usually includes a feeder, vibrating screen, jaw crusher, cone crusher, sand making machine, sand washing machine and other equipment. When configuring the granite sand making production line, it needs to be based on the capacity requirements, raw material characteristics, product requirements and other circumstances to select the appropriate equipment model. For example: for projects with small capacity and small material particle size, you can choose a fine jaw crusher to replace the cone crusher for secondary and tertiary crushing for medium and fine crushing; For projects with large capacity, then a cone crusher is needed to meet the capacity of thousands of tons/hour. Of course, budget is also an important factor to consider when configuring a granite sand making production line. If the budget is insufficient, other configurations can be selected to meet production needs.

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In the granite sand making production line, it also needs to be reasonably laid out. More crushing and less grinding links can be set up according to the actual situation. Production efficiency can be improved by adding equipment such as crushing equipment and fine sand recycling devices to achieve efficient and stable production. The specific configuration needs to be adjusted according to the actual situation. For example, if you need to produce finer sand, you may need to add sand making and sand washing links; If you need to increase the sand production rate, you may need to add crushing and sand making links. In addition, depending on the production scale and operation mode, fixed or mobile sand making machines can be selected to meet different production needs.

To sum up, when designing a granite sand making production line, you need to pay attention to several key points, including understanding the characteristics of granite, determining capacity, optimizing the process, selecting appropriate equipment, considering environmental protection factors, ensuring production safety, and considering investment costs and returns, etc. Reasonable equipment selection and parameter settings can increase the sand production rate, reduce production costs, improve production efficiency, and achieve the goal of sustainable development. Therefore, when designing and constructing a granite sand making production line, various factors should be fully considered and appropriate equipment models and parameters should be selected to achieve good production results.

Gratitude and Forge Ahead | Vanguard Machinery Year-end Shipment Guarantee Delivery

If you plow the fields early in winter, the work will be done in the coming year. Although winter is the end of the year, it is also the foundation and prelude to the new year's work. Since the beginning of winter, many sets of equipment in the production plant of Vanguard Machinery need to be delivered centrally. The severe cold in winter cannot withstand the enthusiasm of Vanguard Machinery's people. They show their enthusiasm in their respective positions, work overtime to catch up with the schedule, ensure production, and keep busy. We are rushing to produce equipment and deliver goods to customers in Saudi Arabia, Malaysia, Mongolia, and Thailand in a timely manner. Every process is in an orderly manner, and every link is taken seriously and responsibly, striving to achieve high efficiency and high quality! Come with me to experience the busy scene of delivery in the workshop!

▲We braved the low temperature, wind and snow to pack the 6CX106 crawler-type mobile crushing plant

▲Equipment waiting to be shipped in the dispatching area

▲The 100 T/H cone crusher fixed production line is loaded and shipped.

▲ 150 T/H steel structure crushing production line for container delivery.

▲The goods arrive at the port and head towards the destination!

Vanguard Machinery maintains a long-term and stable cooperative relationship with the port customs brokers of major fleets and port areas and has efficient coordination capabilities, which can enable the goods to safely arrive at the port and port in a short time and be smoothly cleared and released for shipment and loading.

Hot sales bear witness to strength, and quality wins favor. Vanguard Machinery will continue to fulfill its solemn commitment to be responsible for the brand, reputation and customers, maintain strong fighting spirit and pragmatic innovative style, and work with customers to make greater contributions to the development of mining machinery in my country!

Hard Power and High Efficiency | Vanguard's Oil-electric Dual-drive Crawler-type Mobile Jaw Crushing Plant was Successfully Tested!

 Recently, in the assembly workshop of the Vanguard Machinery production plant, on-site staff are conducting test acceptance of the LA106 crawler-type mobile jaw crushing plant independently developed and produced by our company.

The crawler-type mobile crushing plant, also known as the crawler-type mobile integrated crusher, is a new product that comprehensively replaces traditional crushing equipment. It integrates material receiving, crushing, transmission and other process equipment, and is mainly composed of a vibrating feeder, jaw crusher and conveying equipment. It is mobile and autonomous and can meet the operating needs of different sites. It is widely used in rock crushing, aggregate production, open-pit mining and other crushing operations. It is suitable for granite, basalt, rock, limestone, quartz stone, coal gangue, construction waste and other materials.

New design: bringing forth the new from the old

The LA106 crawler-type mobile jaw crushing plant has a compact overall structure with a strong operating capacity and excellent performance. The maximum feeding particle size is 620 mm, and the maximum working height is 4.1m. It is equipped with mains power and diesel dual power. The overall power is 186.6KW, and the whole machine is powerful.

Adopting Siemens PLC intelligent control system, it has functions such as remote monitoring, fault diagnosis, maintenance and upgrades, remote start and stop, fault alarm and fault record query. It has a visual workflow and simple operation. It can effectively monitor the operating status of the equipment and provide more precise control and adjustment, thereby improving production efficiency and equipment stability.

New quality: brand new

The new design concept of the LA crawler-type mobile jaw crushing plant achieves a standardized, lightweight and modular design. Whether it is in ore crushing, sand and gravel aggregate processing, or other application scenarios, it has demonstrated excellent performance and wide market acceptance, and will surely become a cost-effective product.

Heavy-duty special crawler chassis adapts to more terrains; transitions are faster and more efficient. The maximum allowable inclination angle can reach 30°. It is operated by a wireless remote control with a remote control distance of 30 m. It is easy to drive the equipment to the trailer and transport it to the operation location, improving operator safety and work efficiency.

New experience: refreshing

Vanguard Machinery's crawler-type mobile crushing plant has adjustable and controllable grading; it has outstanding advantages such as large capacity and stable equipment production. It can be said that a crawler mobile crushing plant is a small factory. It is not afraid of terrain restrictions, avoids power outages and power shortages, and saves the cost of preliminary infrastructure. Once the mobile plant arrives at the construction site, it can be put into operation immediately after simple debugging, truly allowing customers everywhere to achieve rapid and stable profit growth.

Good products always speak for themselves based on their strength. Accompanied by our company's leaders and project managers, the customer inspects the ordered equipment, focusing on detailed on-site inspection of the product's appearance, structure, product performance and other aspects. The entire process is rigorous and meticulous. The customer was very satisfied with the equipment acceptance results and achieved the expected ideal results. This fully demonstrates the company's strength and technical level in production equipment, and also lays a solid foundation for the company's further market promotion and development.

What are the Commonly Used Dust Control Solutions in the Sand and Gravel Crushing Production Lines?-Vanguard Machinery Tech

 The sand and gravel crushing production line typically refers to the specific crushing equipment used to grind and crush ore, reducing its particle size to the required range for subsequent resource recycling operations. However, whether it is during the production of the sand and gravel production line or in the ore field where the original ore is stacked with high processing intensity and a wide footprint. In the past, our crushing production sites were always filled with dust, creating a harsh environment. The dust generated during the crushing process spread into the air with the airflow, causing serious environmental pollution and posing a hazard to the health of the operators.

Therefore, in recent years, the country has increased environmental management and advocated the establishment of environmentally friendly stone crushing plants. Dust suppression treatment has become a necessary condition for the smooth operation of stone plants. So what are the dust control solutions commonly used in establishing sand and gravel crushing production lines? Let's find out now!

1. Suppress dust when transporting materials: The jaw crusher to the pre-screening workshop and the semi-finished material belt outlet are surrounded by fully enclosed light-colored steel, which reduces dust pollution and noise by more than 50% compared to traditional open-air production.

2. Capture and collect released dust: Select appropriate dust collector equipment according to the crusher model and process characteristics, such as bag dust collector, wet dust collector, etc. Placing dust removal equipment near the source of dust generation can capture dust to the greatest extent.

3. Spray system: Choose to install two water spray devices at the inlet, outlet and crushing cavity of the crusher. The two water spray heads at the feed port point toward the inlet; The two water spray heads at the discharge port form a certain angle relative to each other, so that the sprayed water is in a cross state to achieve the ideal effect.

4. Dust suction device: Install dust suction devices at the discharge port and the inspection port of the crusher equipment. The dust hood of the discharge port should be installed about 1000mm away from the discharge port. The plane of the dust hood should be perpendicular to the direction of dust flow; The connection between the dust hood and the blower of the crusher equipment maintenance port can be designed to be a flexible telescopic pipe making it easy to refuel the crusher and perform routine maintenance.

5. Optimize the structure: The structure can be modified and optimized in places with relatively large slopes such as equipment feed hoppers, protective covers, chutes, etc. The first is to reduce the inclination angle of the chute to reduce the height difference of the materials; The second is to improve the structure of the crusher. While the overall size of the equipment remains unchanged, the number of teeth on the tooth plate is increased and the tooth shape becomes relatively smaller.

6. Design improvement: Use reasonable process plans and equipment for production, and try to use closed transportation methods during material transportation. In addition, the screen must be cleaned in time to prevent clogging, so that some small particles and dust can be screened out before the material enters the crusher.

In summary, the solution of the sand and gravel crushing production line should implement the principle of prevention first, minimize the dust link in the overall plan, and strictly control dust pollution during raw material processing and transfer; Select equipment with less dust, and use spraying dust reduction and dust removal methods in the early stages. The implementation of the above measures can effectively improve the operating environment of the sand and gravel production line and improve the level of environmental protection.