The impact crusher offers maximum configuration flexibility, from fine grinding to grinding, and is cost effective. It improves safety in the workplace, reduces the maintenance of quarries and provides better access to material resources. An additional advantage is that the garbage can be separated on site.

Table of contents
1. Jaw crusher, operating principle.
2. Impact crushers and hammer crushers compare advantages and disadvantages.
3. Vertical axis breaker market.

Impact coal crusher plant in accordance with the conditions in the field

In operation, the electric motor of the impact crusher rotates the rotors at high speed. And when the hammers were installed on the rotors when the raw material was fed

classes
In operation, the electric motor of the impact crusher rotates the rotors at high speed. And since the hammers were installed on the rotors, as the materials were delivered by the impact crusher, the hammers broke the rocks or minerals under the impact function of the high-speed rotating hammers. And then the broken stones bounced off the cladding panels to get a second bruise. This treatment is continued until the required product size is delivered by the dis charger of the impact mill.



The SBM impact crusher is mainly used in the regrinding process. The crusher is specially designed for rocks and stones of medium hardness with a compressive strength of less than 350 MPa and a max. The feed size is less than 500 mm. Because of its cubic shape of the final product. The impact crusher is widely used in sand manufacturing equipment, road and rail coatings, and the water conservation industry.

The advantages
1. Hammer with high chrome plate, unique impact plate, especially for crushing hard rock, high efficiency and energy saving.
2. Low and large feed openings facilitate the organization of the production line and increase the size of the raw material.
3. Many cavities for crushing, suitable for crushing hard rock.
4. New anti-abrasive that extends the life of percussion hammer, impact plate and coating.
5. Grinding the hard stone, high efficiency and energy saving.

Application
The SBM jaw crusher is a new product that incorporates advanced technologies both at home and abroad. The impact crusher is suitable for materials with a compressive strength of less than 360 MPa and a grain size of less than 500 mm. The crusher of the company is characterized by easy maintenance, high crushing rate, grinding performance, etc.
The impact crusher of the coal production line is used in the treatment of minerals, the chemical industry, cement, building materials, flame retardants, ceramics, glass and other industries for the industry. Milling of medium-hard minerals such as limestone, quicklime, chamotte, slag, calcium salt. Sound mines, building materials, scientific articles made of coke, coal and other materials, the compressive strength of which does not exceed 150 MPa and the moisture content is less than 10%.

Adjust the use of impact stone crusher

Advantages and disadvantages of the crusher:
Impact crusher, good grain of the material.
The wear parts of the crusher consume more than a small hammer crusher, the use of metals is high.
Spare parts for crushers are easy to replace and reduce maintenance costs.
The crusher can be a convenient and flexible adjustment of particle size, particle size, and a wide range of adjustment.
The crusher is suitable for soft materials and the hardness of very large materials.
The crusher can effectively handle the large amount of moisture in the material to prevent clogging of the crusher.

Advantages and disadvantages of the hammer crusher:
The crushing ratio of the hammer crusher is relatively small, the product contains an elongated grain form, a powder with a high grinding efficiency, low and low yield.
The hammer crusher is referred to in the work with a comparison between the crusher, the Hammersteinbrecher and the plastic in one of the following Brechmittelhärten compared to the countertop
40% savings on investment costs.
(2) A high performance of 20-30%.
3 good particle shape, less than 20-30% elongated

China is one of the impact stone crusher manufacturers

The "Global Market Research Report 2011-2021 on the Chinese Global Vertical Well Mill" is a detailed analysis of the current state of the vertical shaft impact mill industry focusing on the Chinese market. , The report provides in-depth knowledge of historical information, forecasts, company profiles, technologies, market factors, market trends and related parameters in the field of Vertical Axis Crushers. The report contains accurate information about the world market and the Chinese market, which would help to make better decisions and take positive steps to link them to potential micro-levels. The report covers several sectors: semiconductors, energy, pharmaceuticals, chemicals, technology, food and beverages, etc.



At the beginning of the report, a general description of the sector is proposed: definition, products, applications, technology, end-users, etc. Then the report represents the main payers of the Chinese market at the intended level. In this section, the report includes the company profile, product specification, installed capacity, latest trend, competitors' strategies, consumer product change, and market share. 2011-2016 for every company. The reports represent static data, generated revenue, production capacity, supply and demand, profits and losses, imports and exports, etc. The supplemental market is segmented by type, product, technology, end-user, application and geography depending on the requirements of competitive landscape analysis.

The report estimates the trends for the market forecast 2016-2021 for the sector of impact crushers. Our goal is to provide a thorough and accurate analysis of the various topics related to the vertical axis crusher industry. The report includes a detailed analysis of the up and down demand, market dynamics, quantitative forecasts and the future market vision. Finally, the report used a research methodology for a new project in the vertical axis crusher industry. The reports aim to meet the general customer search requirements for vertical shaft impact crushers in China and around the world 2011-2021. It covers all important parameters to gain a competitive advantage.

As with almost everything, the most likely time for the Stone breaker is to make the most of it. As it stands, you never know how important something is until you have it or what is needed most. In order to cover high repair costs and production losses, regular maintenance of the rock crushers is required. The most logical measure to maximize the life of the crusher is to design and implement a plan that increases service life, reduces repair costs, and increases production. This can be done by creating a maintenance program for the stone crusher that is respected. Here are five steps to reach your goal.

1. Preventive and predictive maintenance
2. Guide to the right choice and size of industrial crushers

Regular maintenance at intervals increases

There are 3 types of maintenance. Corrective, preventive and predictive maintenance. All differ considerably and are used in different situations. With proper maintenance, nothing is done until something fails. For example, they buy a new car and drive until something breaks down. It makes sense that regular maintenance at intervals increases the life of your vehicle. That's why we have services in our vehicles.





Preventive maintenance is just that; Predefined maintenance plans that occur regardless of the condition of the device. For example, to return to the vehicle, preventive maintenance includes regular fluid checks, safety checks, draining the required oils, and adding new oils. It detects problems before they get worse, and fixes are minor. This usually leads to a reduction in costs and a significant increase in the life of the vehicle. Everything in the industrial world, from pumps to conveyors, crushers and crushers, is the subject of preventive maintenance. This ensures that problems are quickly identified and maintenance can be arranged to replace worn parts before they fail.

Preventive maintenance is not cheap, but it is worthwhile during the life of the device. Downtime is extremely expensive in most applications. By implementing the correct preventive maintenance program, downtime is limited and, as a result, maintenance costs are negligible. Maintenance has changed significantly in the last 10 years. Nowadays, forecasting is the most preferred method of maintenance. Of course some machines are not easy to make and I will explain them below.

As the name suggests, predictive maintenance includes predicting when a machine will fail. Now I do not want to say that you take out a magic wand and make a random assumption: there are many different ways to monitor the status of a machine. These are known as condition monitoring and include vibration analysis, oil analysis, thermal imaging, and ultrasonic measurements. All are non-destructive, fast and very effective.

In many industrial plants, maintenance takes place when you do not need them. For example, pumps can be dismantled as part of a preventive maintenance program. When I found that the pump was in perfect condition, maintenance was a waste of time. What would happen if I could say that the pump is in perfect condition without defusing it? By using the vibration analysis, you can change the vibrations and this indicates the condition of the equipment. As rotating equipment wears, they vibrate more and it is easy to see. You can change the vibration and see its deterioration and plan for maintenance when the device really needs it.

Each of the above types of condition monitoring is self-specialized. If you want to improve maintenance, I'll give you two tips. The first is to make sure you have a quality-controlled Computer-Aided Maintenance Management System (CMMS), and the second is to make sure you're trying to implement preventive maintenance policies. These two suggestions will help you to steer your maintenance in the right direction and increase efficiency, morale and enjoyment in the maintenance departments.

Crusher with equipment

Shredders are machines that use impact, cutting, compression or abrasion to reduce a variety of solid products to a desired particle size range.

A versatile high-quality industrial crusher designed for processing materials such as chemicals, minerals, food, food ingredients, pharmaceuticals and grains, fertilizers, charcoal, soap and more

Tipping crushers are used to reduce the materials to be treated, to remove plugs, to dissolve agglomerates to their original particle size, and to facilitate the unloading of silos and containers. They are also used to improve the flow properties of materials as well as bulk and powder feed. The Pipeline Dumper is used to improve fluid flow, protect pumps, and improve and streamline dissolution and mixing processes.

Trough breakers can reduce hard or soft materials, dry or wet, friable or sticky. The units are designed for applications that require precise performance, superior fit and finish, corrosion or stain resistance, harsh operating conditions, and applications that require high reliability.

The feed material (material introduced into the crusher) may be a solid, a mass, a part or an agglomerate. Franklin Miller mills are available in a variety of models designed for dry, gravity or wet systems. Hackers can be transported online or openly, independently and as part of an overall system. These units can be supplied for low or high temperature environments, as well as for pressure or vacuum systems.

Filled material in silos and silos.

The discharge of bulk materials and powders from a container or silo can often be a major problem, resulting in lost production and high maintenance costs. These flow problems can also cause problems with damming and even failure of containers. The problem arises when the powders are transported as two phases in the container. The material tends to agglomerate or accumulate in the walls of the containers.

The solution

A common solution is the installation of a dump crusher in the dump. This unit attacks and destroys the large solids that cover the landfill. It works almost like a sink that prevents the delivery of large lumps.

Crusher selection

Although crushing is governed by the basic laws of physics, no law or rule replaces the experience and testing of the choice and size of a crusher for a particular application. Choosing a shredder for a particular application depends on several factors, including the following.

Here are some key criteria to consider when choosing a shredder:

• Does the crusher support the maximum capacity required to be handled without excessive load or overload?
• Does the machine accept the total size of the raw material?
• Is the functioning of the device compatible with the properties of the material: brittle, resistant, sticky, abrasive?
• Is the design and construction of the crusher suitable for specific application requirements, eg.
• Does the crusher produce the required particle size?
• Does the crusher produce excessive fines?
• Does the device work with minimal noise or vibration?
• How is the device powered? Transported by gravity, pumped or dropped?
• Does the crusher match the configuration of the connection? Dimensions round or angular?
• Is the crusher suitable for the conditions and the operating temperature?
• Does the device meet the requirements for indoor maintenance and accessibility?
• Does the crusher have sufficient seals for the application?
• Does the supplier evaluate the field service and qualified customer service?
• Is the machine built with high quality materials and workmanship?
• Is the correct configuration of the mill adapted to the available space?

The screening is used to fraction ate bulk materials and separate the composition from the extraction of natural resources, the enrichment of iron ore and coal. This is a special plant complex in which the main role (infertility and eccentric) occupies a special place

1. Vibration screens history.
2. Types of modern vibrating screens.

The first signs of the use of screen technology can be found in Egyptian wall drawings from 1500 BC

The first signs of the use of screen technology can be found in Egyptian wall drawings from 1500 BC. With the advent of the Bronze Age, pigments, salt, metallic minerals and charcoal begin to undergo a detection process. After some time, non-metallic minerals and various chemical components enter the classification. During the European scientific and technological revolution (late 17th century), the popularity of screens for dry separation increased. And since the late 19th century, the selection of mineral materials has been favored by sieve models, predecessors of existing planar vibrational analogues.





The additional technical development followed the introduction of screens with more powerful vibration equipment to obtain more small portions of the classified material. The new high-performance vibratory device achieves working speeds of 700 to 3000 revolutions per minute and the vibration amplitude of the sieve surface is less than 10 mm.

Models of resonance vibration

Modern vibrating screens are eccentric (or rotationally driven by an eccentric mechanism) and the inertia is driven by a vibrator. These include such models of resonance vibration.

The working equipment of vibration inertia screens consists of a sieve or sieve firmly fixed in a box in which the cyclic vibrations are supplied as the material is moved, moved and distributed into fractions. Sieves are usually in 2-3 cells, each lower cell has smaller cells. In the worktop, the screens are made of wire mesh and the extruded sheet steel screen with holes or a set of grids made of steel, rubber or plastic.

The working body of the eccentric vibrating screen also comprises a moving channel with 1, 2 or 3 sieves and 4 bearings, 2 of which are fixed in the fixed frame.

The size of the screen surface as well as the shape and size of the holes affect the screening performance. The screen area of ​​equipment for the construction sector is characterized by a width and length coefficient (1: 2.5). For thick grids this ratio is 1: 2. The performance of the equipment depends on the screen area in the ratio 1: 2.5.

The vibrating sieves are inclined and horizontal (they differ in the position of the screen surface). Raw materials classified horizontally without the aid of gravity. The movement takes place with an inclination of about 45 degrees to the horizontal.

The work of inclined umbrellas is carried out by a circular movement that oscillates in a vertical position.

Using inclined, eccentric and inertial vibrations, commercial fractions and gravel fractions are selected. At the same time, eccentric machines are more productive than others in difficult working conditions in intermediate processes. Regardless of the size of the load, the eccentrics ensure the stability of the vibration amplitude of the channel. In addition, they are easier to isolate.

Horizontal inertial sieves are now mainly used in mobile crushing and screening plants, which despite their small footprint have high filtration rates. As part of the plants, horizontal inertial screens with grids are used for the prior classification of materials. When steel screens or perforated plates are incorporated into the working equipment of the machine, this equipment is used for commercial and intermediate classification.

One promising technique is called resonant vibrating screens. These machines require less power. In addition, the balance of their masses allows the production of models with large screen areas. However, inertial development is currently the most popular type of technology. According to experts, inclined inertia strainers are much more reliable and unpretentious than other types. Inertia counterparts are very effective at sorting bulk solids.

According to GOST 5526-67, the inertial screens are divided by the weight of the load, which is classified as light (GIL), medium (GIS) and heavy (GIT). When labeling the technology, letters and numbers were used. For example, GIS-52. GIS - Average inertia model. The first digit (5) indicates the length of the car. The most commonly used vibrating sieves with a length of 4.5 m. The number 2 indicates the number of sieves, which depends on the work and the size of the material obtained after the selection. The length of the screen depends on the productivity and the surface of the screen.

Crushing plants are solid or mobile devices that remove debris and gravel by crushing, splitting or pushing. This group of industrial plants is represented in models with a different operating principle. Common factors include the ability to grind hard and durable rocks, resulting in resistance to abrasive influences and heavy mechanical loads. The cost depends on the performance, reliability and quality of the material received. When choosing a particular option, all factors must be considered.

Contents:
1.Types and properties.
2. Selection criteria for production.

Machine type and production capacity must be adjusted to the needs

Depending on the method used to mill the original stones and their construction, jaws, cones, rotors, rollers and centrifuges are dispensed, with some being combined. Some are universal and suitable for every stage of gravel production, others are used only in the first or the next step. Classically, they are divided into stationary (large-scale mining) and mobile devices that are in greater demand because of the ability to work in any desired location. The selection of a particular crushing plant is based on their destination.



The jaw designs are universal, but are mainly used in the primary treatment of rocks of any hardness. In this case, the ballast is produced by pressing the raw material poured through the upper part between two corrugated plates of high-strength metal alloys while controlling the proportion by changing the gap at the time of approaching. The worn elements change as needed, the process of crushing stones and gravel is not difficult.

The performance of jaw crushers in the treatment of quarrystone depends on the parameters of the opening of the load, the specified size of the fractions, the frequency of vibration of the moving plates, the angle of detection and the hardness of the quarrystone. the original rock. The standard range of these models ranges from 1 to 500 m3 / h. With good productivity and relatively easy maintenance, they require frequent inspections and consume large amounts of energy. Its parts often wear under the influence of vibrations and abrasive loads, and the quality of the material obtained leaves much to be desired (the proportion of grains having an irregular shape in the total mass is too high).

The cone crushers have a similar operating principle, but due to the three-dimensional shape of the abraded plane and the unbalanced axis of rotation, the parts are machined to a higher quality. They make it possible to obtain crushed stones with little desquamation and permanent fracture composition. They are characterized by a high productivity and a relatively low energy consumption, the purchase is recommended when large amounts of medium-grained material are needed. Considered features include volume and low maintainability.

The operating principle of the roller devices is based on the crushing of gravel and gravel medium fractions by crushing or splitting between two or four gears, the waves rotate smoothly. The performance of these devices depends on the rock type, the size of the work elements (including the loading slot) and the rotation frequency. It is recommended to purchase mainly for after-treatment, especially for grinding low and medium density gravel. Most models of this type are made by Chinese manufacturers. Used roll crushers are cheaper than others, but their reliability is not guaranteed.

The rotary or hammer types have a similar purpose, they allow to obtain the smallest gravel, but they are not suitable for grinding too hard rock. The grinding takes place under both the impacts of the elements mounted on the barrel and in contact with the inner walls. The fractions are regulated by changing the distance between the grid and the ends of the hammers. With activated rotor chippers, a diffusion screen is additionally introduced into the circuit. In view of this, it is recommended that they be purchased as part of a complex and used exclusively for secondary treatment. Otherwise, they break up quickly.

With centrifugal aggregates, rocks with a breaking size of 100 mm are ground down to the smallest size. Polishing occurs when overclocked parts are hammered into or between the liners. As this variety is less used than others, the risk of imbalance of the working axis is considered to be a serious disadvantage. Centrifugal models are mainly concerned with the production of construction sand or the processing of slag and secondary soil.

The ease of obtaining machine parts is very necessary and also a quick repair

The following properties and factors are taken into account when selecting the devices:

1. Power breakers For laboratory tests and individual work, mini-installations (less than 1 m3 / hour) are sufficient; In other cases, this indicator depends on the processing volume.



2. Reader type and power consumption. Most models have an electric motor, but if necessary, you can buy equipment associated with tires or diesel. The focus is on the cooling method of the device. With a lot of work, devices with forced systems are preferred to natural systems.

3. The permissible dimensions of the rock to be filled, determined by the design of the loading port, the required parameters of the fractional composition at the outlet. Universal models include screw and cone variants, the latter being recommended as a cubic debris breaker. To better recycle the suitable and rotating rollers.

4. Dimensions and weight of the system, volume of the loaded funnel.

5. Availability of remote controls, dust collection systems, magnetic separators and other auxiliary functions, eg. B. Special gripper for loading

6. When purchasing used units, in addition to the general assessment of the state, account is taken of the number of hours worked, this should not be too important.