process and machinery of crusher plant

crushing plant startup sequence & procedure

crushing plant startup sequence & procedure

All the Crushing Plant equipment is interlocked, except for the sump pump, and therefore, the plant must be started from the fine ore bin back. The dust collector and scrubber bottoms pump are interlocked together, and must be started prior to other equipment. The sump pump should be placed in AUTO. The drives should be started in this order:

Normal Crushing Plant Operation After the crushing plant has been brought up to normal operating conditions the operator should attempt to even out the feed to the jaw crusher to the design tonnage of 60 mtph. This is achieved by ensuring that the feed to the crusher maintains an essentially full chamber without ore spilling out. Adjust the speed of the apron feeder with to increase or decrease the feed rate to the jaw crusher and ultimately to the crushing circuit.

The product from both crushers should be visually checked to ensure that each crusher is producing the desired product. If the jaw crusher product increases in size, the cone crusher may become overloaded. Similarly, if the cone crusher product increases in size, the circulating load around the cone crusher will increase, consequently, increasing the load on the cone crusher and decreasing throughput.

The Crushing Plant operator must monitor the cone crusher power draw displayed on the cone crusher ammeter. The ammeter should show no major fluctuations and should read approximately 100 amps. An excessively high power draw on the cone crusher indicates the cone is being overloaded, which may be due to a high feed rate or a blinded screen.

The operator must pay close attention to the cone crusher lube system. A low pressure alarm will sound if there is an abnormally low oil pressure. If this alarm sounds, the crusher will shut down after a timed delay. If the crusher is allowed to operate longer than 2 minutes after the loss of oil pressure, serious damage to the crusher may result. If the pressure gauge indicates pressure above the normal operating pressure, shut down the cone crusher and investigate the problem. Likewise, a high temperature alarm will sound if there is an abnormally high oil temperature in the oil return line. Shutdown the crusher and investigate if the temperature of the oil pipes seems excessive. Low oil pressure or high oil temperature may be caused by several conditions;insufficient oil supply in the lubrication system, a broken oil feed line, oil pump failure or excessive bearing wear in the crusher. Either condition must be thoroughly investigated as to the cause of the alarm.

Although there is no variable control of the beltconveyors in the Crushing Plant, the operator should regularly check conveyor discharge chutes to ensure there is no undue buildup of material. This is especially important if the feedmaterial is clay-like or excessively wet.

The Crushing Plant operator must ensure that the dust scrubber has an adequate supply of reclaim water and monitor flow-meter to ensure that the proper amount of water isbeing recirculated through the scrubber. Under normal conditions, the dust scrubber requires a minimum recirculation of 8 to 10 cubic meters per hour. A lower flowrate will ultimately cause excessive wear on the scrubber and a higher flowrate is a waste of reclaim water and may hinder operation of the grinding circuit.

aggregate crushing plant | how to run a crushing plant - jxsc mine

aggregate crushing plant | how to run a crushing plant - jxsc mine

At the same time of economic development, the concrete industry is booming, aggregate sand takes an 80% proportion in all materials of concrete. Improving the productivity of aggregate processing plant, which on the sand aggregate manufacturing process put forward higher requirements.

How many times a raw stone be crushed to produce the finished aggregate? As we all know, the higher the crushing times, the higher the cost. Aggregate that is crushed one or two times usually not achieves the required effect whether the size or shape. In the practice, there is three crushing processed at least. In one word, the crushing process is determined by the requirements, cost, and profit.

The type and output of aggregate are determined by the capacity of the crushing and screening machine, the maximum capacity can be 1000t/h. if want a higher output, only by increasing the crushing production line. take a three crushing aggregate processing plant as an example. Capacity: 350-400t/p Discharging size: 0-30mm Feeding size of first crusher: <100mm; second crusher: 5-200mm; the third crusher: 5-100mm.

After the analysis of the processing flow and aggregate size, the determination of the crusher machine, the screen should be taken in considered next. The crushing effect is various with the type and model. When using cone crusher, it is important to control the feed flow of the material, so it is best to have a surge bin before the material goes into the cone crusher. Besides, the feeder can control the stability of feeding in the process, and the cone crusher is the best equipped for grading of aggregate. The screen machine is always as corollary equipment for crusher in the crushing process. more cases of crushing plant for reference Impact crusher has many advantages compared to the cone crusher because of its simple structure, and working principle of impact force, such as dont need surge bin, fewer requirements for screening machine. But, it is inevitable that impact crusher has a shortcoming which finished product has a high content of needle shape gravel and of powder. Impact crusher is rarely in the aggregate processing plant alone, only when combining with the vertical gyratory crusher. The vibrating screen divides into the sideling type and flat type, sideling type more power saving than the flat vibrating screen. Generally, the fine particle screens are a single layer or double layer, but the finished product screen is multiple layers for the most part. Whats more, a washing system is made for the wet type aggregate process, dust removal design for the dry type process.

Check the capacity by considering the nominal feed opening, closed side setting S.S.S and crusher type, then choose the reasonable equipment. If need four times crushing process, the gyratory crusher usually is the fourth crusher. The choices for the second or third crusher are cone crusher, gyratory crusher, impact crusher. Jaw crusher can be put at the first crushing sector, primary crusher process the material( >500mm). Impact crusher has a higher crushing ratio, suits for the material which dont need repeatedly crushed. Cone crusher can produce a good shape particle. The gyratory crusher is used for shaping, thus produce good quality gravel. Sand making machine for sale

Jiangxi Shicheng stone crusher manufacturer is a new and high-tech factory specialized in R&D and manufacturing crushing lines, beneficial equipment,sand-making machinery and grinding plants. Read More

equipment for rhyolite crushing processing plant

equipment for rhyolite crushing processing plant

Rhyolite is igneous, which belongs to volcanic ejectedrock, its chemical composition is the same as granite, due to the cooling of minerals formation is too fast, it cannot form crystallization, silica content greater than 69%, which is mainly made up of K-feldspar and quartz. The rocks are gray, pink or brick red, porphyritic structure and rhyolitestructure. In China, mainly exist in the southeast coastal areas. Because chemical composition isthe same as granite, it means include at least one kind of granite. Granite is most likely to be generated by the magma, and the phenocrysts of rhyolite may include quartz, alkali feldspar, Austria feldspar, amphibole or pyroxene.

People may dont know rhyolite, but now it is closely related to us, it can be as a new kind of ceramic materials. Till now, more and more investors would like to enter rhyolite industry, and they have gained much profit, because it is a new kind of material which can greatly reduce the production cost and it is very friendly to the environment, at the same time, the government attaches great importance to rhyolite industry and add the investment to the rhyolite industry, so this field will have a more bright market in the future.

Based on the property of rhyolite, the rhyolite crushing process is consisted of primary crushing and secondary crushing. Typically, jaw crusher is used in the primary crushing stage, and the impact crusher is used in the secondary crushing stage. Usually, according to the mining conditions, mobile crushers are also used in the rhyolite mining. After the two stages of rhyolite crushing, large rhyolite stones will be changedtosmall rhyolite stones. As for the selection of rhyolite crushing equipment, specialists from SBM suggest using the PE series jaw crusher and PFW series impact crusher, which features high efficiency, high capacity, reliable performance and low operation cost. In the whole rhyolite crushing processing plant, it not only include crusher, but also has vibrating feeder, vibrating screen, belt conveyor and other control system. SBM will offer the complete crushing plant equipment and all of them are high efficiency.

As we all know, in the whole rhyolite mining process, the crushing stage serves as the basic role. Typically, jaw crusher often used as primary crushing stage in the rhyolite crushing process. Impact crusher is often used as secondary crushing machine in the process of rhyolite mining, especially for the PFW series impact crusher which is also called European style impact crusher, often used in the secondary crushing and fine crushing. It is very suitable for open-pit crushing in quarries. PFW series impact crushers are adopted high-end materials and have special designs which are heavy-duty rotor design, unique hammer locking system, and interchangeable wearing parts. In addition, reformative adjusting device reduces the overhaul time of machine. Adopting the rotor analysis, every PFW impact crusher can ensure excellent stableness and reliability. We also have three types of cone crusher which can be adaptable to different crushing stage.

SBM is a professional manufacturer of mining equipment.Till now, we have established a long-term relationship with many rhyolite investors all over the world. Our rhyolite crushing equipment features reasonable price, reliable performance and easy operation. We will try our best to help local rhyolite investors around the world, we will make a big difference to your rhyolite mining business, believe us, and we can bring rich returns to your rhyolite investment.

We are so happy that rhyolite investors think highly of our rhyolite crushing equipment. Besides, the price and cost of SBM's rhyolite crushing machine is very reasonable, therefore, it is a suitable choice for rhyolite investors. If you are interested in our equipment, you can chat with our sale agents who will offer professional suggestions for your mining business, we will try our best to help you reach the top of mining industry.

pcb recycling plant--mother board crushing and separating machinery

pcb recycling plant--mother board crushing and separating machinery

The PCB crushing and separating machinery is used to process the separation of metal and non-metal in waste printed circuit boards, copper clad laminate, circuit boards and leftover materials, then reuse the copper and resin powder. The equipment uses high voltage electrostatic separator to make the separation more fine, effectively control the loss of nonferrous metals. The separation rate of air separation equipment is up to 97%.

This PCB recycling plant adopts biaxial crusher for the first stage crush, hammer mill for the second crush, high speed turbine pulverizer for the third crush. Materials are crushed into powder by three stages of crushing, then separated by air separator and electrostatic separator. This production line has the novel and unique structure with large capacity and low power consumption, controlled by PLC. It not only improves the quality of reusing copper, but also prevents secondary pollution. The reutilization rate of copper in waste circuit board is up to 99% after separating and sorting. After being broken for three times, the waste circuit boards become a mixture of metal and resin fiber powder. Then the metal and the resin powder are separated by the separation of air separator and electrostatic separator. In order to prevent the dust pollution in the process, adding bag dust filter collector after the air separation process effectively solves the problem of dust pollution.

mobile crusher plant, mobile crushing plant - gep ecotech

mobile crusher plant, mobile crushing plant - gep ecotech

Usually mounted on a tyre or crawler frame and self-powered or moved using a tractor, mobile crushing plants are often used for on-site operations due to their great flexibility to be moved whenever required. The advantages of using a mobile crushing plant are the savings in transport and infrastructure costs, the ability to crush on site and move at any time; in addition, mobile crushing plants have good asset retention and are popular with project contractors and machinery rental companies.

In the construction and demolition waste disposal sector, mobile crushing plants are used to process concrete, asphalt and other demolition debris, not only to recover useful construction aggregates, but also to reduce transport and landfill costs.GEP Ecotech's mobile jaw crushers, mobile impact crushers, and mobile screening machines have been used in different projects in many places around the world for many years, and their excellent performance and reliability have been continuously proven in practice.

When the mobile crusher plant moves, it is powered by the power system and the crawler chassis is driven by the hydraulic electric control system; during installation, the power system automatically completes the installation of the equipment by driving the hydraulic cylinders and other movements through the hydraulic electric control system control; during operation, the power system drives and controls the mainframe and auxiliary equipment through a hydraulic electric control system. The material enters the mainframe mounted on the tracked chassis and frame and is discharged through an integrated belt conveyor after being crushed and sorted.

GEP Ecotech's mobile crushing plants are available on both tire and crawler chassis, with the tire chassis crushing plants using tractor-trailers for easy and cost-effective for long-distance transfers. Crawler chassis crushing plants are diesel or electrically powered with high passability. Allowing freedom of movement around the job site.

GEP Ecotech's mobile crushing plants are available on both tire and crawler chassis, with the tire chassis crushing plants using tractor-trailers for easy and cost-effective for long-distance transfers. Crawler chassis crushing plants are diesel or electrically powered with high passability. Allowing freedom of movement around the job site.

aggregate crushing plant-high safety high efficiency stable performance

aggregate crushing plant-high safety high efficiency stable performance

As a result of the great development of the basic construction and the reconstruction of the towns and the rapid rise of the high-rise buildings, the old-style buildings die out, and the waste of the construction wastes is directly buried without treatment, Then it will cause long-lasting harm to our living environment. Crusher plant can deal with construction wastes well.

Our company, a professional construction machinery manufacturer in China, provides top quality crushing plant, asphalt plant, concrete batching plant for sale. If you are interested, just contact with us now!

Compared with the mobile crushing plant, the stationary crushing screen plant has no tires. In view of the present situation of construction waste treatment in our country, crushing plant has strong advantages, but with the increasing maturity of construction waste disposal market, it will slowly be transformed into fixed crushing plant, that is to say, mobile crushing station is transitional equipment, and slowly will be converted into fixed type.

It is mainly used for fields like metallurgical, chemical, building material, hydro-power that needs material processing, especially for highway, railway, hydro-power with the operation of mobile stone. Customers can choose multiple configuration according to types of raw material, size and finished material requirements.

Mobile crusher plant can not only reduce the cost of transportation, but also cooperate with brick making machine to make the raw material into finished products at one time. With the increasing market demand, various types of crushing plant are needed, such as jaw mobile crushing plant, tire mobile crushing plant and other types. These plants can produce product with high quality, high crushing ratio, reliable performance.

Vibration feeder takes eccentric shaft as excitation source, gear transmission, low noise, stable operation, long life, and it can screen fine material in advance to make crusher more efficient. Adjust the gap grid design to prevent material blockage. Customers can selectively install speed-regulating motor, easy to control the feed quantity, no need for frequent start-up of the motor.

Circular vibrating screen is a kind of screening machine, which mainly produces centrifugal inertia force (excitation force) with radial variation because of the unbalanced rotation of the vibrating wheel of the exciter. Itdrives the screen box and makes the screen vibrate. The trajectory of the screen frame is elliptical. The material on the screen is thrown up by the upward movement of the screen surface, and then falls back to the screen surface after a distance. In this way, the screening is completed in the process of moving from the feed end to the discharge end. The amplitude of the vibrating screen can be adjusted by changing the weight and position of the counterweight.

As far as the counterattack crusher is concerned, the rotor rotates at high speed under the drive of the motor while working, and the material entered from the feed port is hit by the plate hammer on the rotor, which is broken by the high speed impact of the plate hammer; the broken material is hit back on the liner and broken again; later, it is discharged from the outlet. Adjusting the gap between counterattack frame and rotor frame can change the particle size and shape of material.

The material is uniformly transported into the crusher through the feeder, and after the crusher is initially broken, the closed circuit system is formed by the circular vibrating screen to realize the cyclic crushing of the material, and the material in accordance with the grain size requirements is output by the conveyor, so as to achieve the production purpose.

Before the operation, check whether the supporting equipment can run normally, such as crusher, feeder, and so on, whether the connection of these supporting equipment is loose or falling off, and whether the transmission device is abnormal. Especially the crusher, ensure that there is no residual materials in the crusher. In addition, because the working environment of the stone crushing plant is complex, the tire of the mobile crushing station is a vulnerable part, the user should also check whether the tires can work normally before carrying out the operation, so as to ensure the overall performance and normal operation.

The circuit problem of the whole machine in the operation process is a problem that the user needs to pay attention to. If there are special noises, odors or sparks in the working process, stop the operation immediately, maintain in time and never work by force. Otherwise, the whole equipment and motor may be damaged, and it is easy to cause inestimable losses to the user.

Before the stop of the crushing plant, the user must ensure that all the equipment can stop after all the materials are discharged. After the mobile crusher stops, the user should also check the circuit of the equipment, the supporting equipment and lubrication in time. For any abnormal condition, repair and maintain in time. In addition, due to the complexity of the working environment of the aggregate crushing plant, users need to clean and maintain the equipment in time after operation.

Related Equipments