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a vsi is a vertical shaft impactor 2 a rock crusher

valor vertical shaft impactor (vsi) - superior industries

valor vertical shaft impactor (vsi) - superior industries

All that time it took to design and build postponed your ability to generate income. What if we told you we've got a library of pre-engineered plants ready to build, rapidly install and produce profit?

Superior replacement crusher parts are taken from the same warehouse used for our manufacturing operations. That means you get an equal part, with equal quality, thats designed exactly for your machine.

Usually positioned after your primary or secondary crusher, Vertical Shaft Impactors (VSI) consistently produce cube-shaped material. The shape and size of the final product is a spec required by most modern asphalt contractors including Superpave.

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vertical shaft impactor vsi crusher conmix crusher

vertical shaft impactor vsi crusher conmix crusher

Vertical Shaft Impactor, VSI CRUSHER, Vertical Shaft Impactor Plant or Vertical Shaft Impactor Crusher(VSI Crusher)is manufacturing supplying & exporting by Shree Conmix Engineers Pvt. Ltd. in Ahmedabad, Gujarat, India. Which is known as Sand Making Machine as well as Rubble Shaping Machine. Vertical Shaft Impactor (VSI Crusher), Vertical Shaft Impactor Plant is used in the quarrying industries for the production of high quality aggregates & also used for production cubical sand from aggregates.

The material enters through the feed tube into a closed rotor assembly. Then it is thrown against an angular rock bed by high speed impeller, which gives high velocity & Swirling action to the material. It is widely used in all kinds of hard and brittle materials for medium, fine crushing. Such as, rocks, abrasive, refractory, cement clinker, quartz, iron ore and concrete aggregate and so on, and building sand, building road gravel are the most appropriate.

Shree Conmix Engineers Pvt Ltd. is introduce Indias best wide range of Vertical Shaft Impactor Or VSI Crusher. Our ImpactCrushers are designed to exceed the primary needs of customers in the mining, aggregates and recycling industries.

Working principle of conmixcrushers vertical shaft impactor is totally different than horizontal shaft impactor. It has a high speed rotor with wearing resistant tips and main chamber (crushing chamber) is designed in such a way so that speed rotor throw the rocks against the high crushing chamber. In vertical shaft impactor crusher predominant force is the velocity of speed rotor.

Shree Conmix Engineers Pvt. Ltd.is a famous forVertical Shaft Impactor Crusherin India which was established in 1990. Our VSI Crusher have been sold overseas with its high quality and effectiveness. You are welcomed to contact us via email or phone and we are waiting for your visit at any time.

what is a vertical shaft impactor (vsi) primer? | stedman machine company

what is a vertical shaft impactor (vsi) primer? | stedman machine company

All roads, you might say, lead to the Vertical Shaft Impactor (VSI) because these crushers make it possible to create roadways and just about everything else. Francis E. Agnew of California patented one of the first Vertical Shaft Impactors in 1927. His configuration stacked three VSIs atop each other to produce sand, thus starting the VSI evolution.

Today, VSI crushers and the folks who rely on them have produced many configurations to include everything from the addition of cascading material into the crushing chamber, to air swept separation of lighter product. One version suspends the shaft from above like a sugar centrifuge. Its also one of the most feature-patented crushers, so some of the things mentioned here might be unique to a single manufacturer. VSIs apply a large amount of energy to crush material and thats why its one of the most versatile crusher configurations today.

When it comes to producing materials such as aggregate for road making, VSI crushers use a high-speed rotor and anvils for impact crushing rather than compression force for the energy needed for size reduction. In a VSI, material is accelerated by centrifugal force by a rotor against the outer anvil ring, it then fractures and breaks along natural faults throughout the rock or minerals. The product is generally of a consistent cubical shape, making it excellent for modern Superpave highway asphalt applications. The rotor speed (feet per minute) controls final particle size.

The VSIs high cubical fracture percentage maximizes first-pass product yield and produces tighter particle size distribution. It has a high-throughput capacity ideal for beneficiation (elimination of soft material). Properly configured the VSI accepts highly abrasive materials. It has simple operation and maintenance. You can quickly change product size by changing rotor speed or cascade ratio. Some models have reversible wear parts to reduce downtime. The VSI typically has low operating costs even in high-moisture applications because of reduced energy costs and low wear cost per ton.

There are some feed size limitations with a VSI because of the small feed area available in the center of the rotor. Tramp material in the feed such as gloves, tools, etc. can cause problems with imbalance. The high RPM and HP require careful balance maintenance such as replacing shoes on both sides of the rotor at the same time. High wear part cost may be a problem for some hard abrasive materials, but the VSI may still be the best option.

Major limestone applications are for Superpave asphalt aggregates, road base, gravel, sand and cement. Industrial uses include: corundum, corundite, ferro silicon, glass, refractories, silicon carbide, tungsten carbide and zeolite. Mining applications include: bauxite, burnt magnesite, iron ore, non-ferrous metal ore, perlite and trona sulfate. VSIs are excellent for everything from abrasive materials to waste and recycling applications.

Feed size and characteristics will affect the application of a VSI. The feed size is limited by the opening in the center of the rotor. Normally less than 5-inch material is desired, but very large VSIs can handle up to 12-inch feed. Another feature that will affect application is moisture, which can make the feed sticky. Required production capacity is the final limiting criteria. Large primary horizontal shaft impactors can output up to 1600 TPH and more. 1000 TPH is about the maximum for a VSI because of the limiting motor size and the rising G-force of a high-speed rotor, which is calculated by multiplying the radius times the square of the RPM.

Shoe configurations are many: rock on rock, groups of rollers, special tip wear parts and many others. The metallurgy of the shoes is also highly varied. Rotors can have three to six shoes. The number of shoes is typically governed by the diameter of the rotor. The larger the diameter rotor, the more openings are possible. Computational Fluid Dynamics (CFD) mathematical models are utilized to simulate the flow and collision forces to reveal solutions for lower wear cost, consistent final product, and higher energy efficiency.

The material to be crushed is fed into the center of an open or closed rotor. The rotor rotates at high rpm, accelerating the feed and throwing it with high energy into the crushing chamber. When the material hits the anvil ring assembly, it shatters, and then the cubical shaped product falls through the opening between the rotor and the anvil and down to the conveyor below.

The typical VSI is fed, from above, into the center of its rotor. The material is then flung across an open void to the crushing chamber. It then impacts the outer anvil ring. This crushing action imparts very high energy to the material and is very effective on most types of material. It gives a very uniform and consistent grade of product.

In cascade feeding, material bypasses the rotor and enters the crushing chamber from above. Its called cascade feeding because as material fills up a large feed bowl, with an outer diameter larger than the outer diameter of the rotor, it spills over the side and falls into the crushing chamber from above, bypassing the rotor. The effect of increasing feed through cascade is similar to slowing the rotor. Cascade feeding in amounts up to 10 percent may have no effect on particle size distribution or quality. The product gradation curve and product shape will change, if an increased amount of cascade feeding is used.

The VSI features multiple rotor/anvil configurations for various applications. From open or enclosed rotors to the tubular rotor, each machine is configured for their unique application. In many cases the rotor table, rotor assemblies, anvil ring or rock shelf are interchangeable, allowing maximum application flexibility.

The open top metal rotor is good for large feed or medium to very hard material, but it will work best for softer materials. It can handle medium abrasive, dry or wet, but not sticky materials. High reduction ratios are common, which are excellent for sand and gravel production in closed loop systems. Shoe shape can change the production size range. A straight shoe face design produces finer product, and a curved shoe face design produces coarser material.

The tubular rotor creates higher tip-speeds, which increases first pass yield with tighter particle size distribution and also reduces the recirculation loads. One unique feature is that the rotor rotation is reversible, allowing wear on both sides of the tube. Rotating the tube itself one-quarter turn also doubles the wear.

Any time the material or rock is used as an impact wear surface the term autogenous is used. Putting a top on the rotor table and shoes allows autogenous use. During operation of the VSI, a bed of material can be designed to build up inside the rotor against each of the shoe wall segments. The bed, which is made up of material that has been fed to the rotor, extends to a wear tip. The bed protects the shoe wall segment from wear.

Concerning the rock shelf anvil, it forms a near vertical wall of material upon which the accelerated material impacts. Rock-on-rock crushing reduces maintenance but can require up to 30 percent of material recirculation before meeting size requirements. Also, the rock shelf anvil absorbs energy that could otherwise be used for breaking, which may reduce efficiency. More RPM may be needed to achieve the same result as a solid metal anvil.

Good for medium abrasive materials, rock-on-rock configurations of either or both rotor and anvil may produce consistent material with low-wear cost and can handle wet but not sticky conditions. Reduction ratios from 2:1 to 5:1 can be expected. Its widely used for quarried materials, such as sand and gravel.

The VSI is one of the most versatile crushers available on the market today. Even with some limitations, like feed size and output capacity, VSI features have been and continue to be developed to maximize first-pass yields and lower operating costs. If you test your process on full-scale equipment before choosing your VSI, you wont be disappointed.

Stedman Machine Company works closely with its customers to determine the best, most cost-effective, efficient size reduction method and equipment for specific applications. Stedmans line of equipment includes: Cage Mills, Grand Slam and Mega Slam Horizontal Shaft Impactors, V-Slam Vertical Shaft Impactors, Hammer Mills, Aurora Lump Breakers, Micro-Max and Vertical Roller Mill Air Swept Fine Grinders. Stedman operates a complete testing and toll processing facility staffed by experienced technicians with full-scale equipment, allowing customers to witness accurate crushing test results, predicted output capacities and processing data. Support services include system design and 24-hour parts and service.

vertical shaft impactor pralcka

vertical shaft impactor pralcka

Pralcka vertical shaft Impactors are designed for crushing a wide range of rocks, ores and minerals into fine cubical products. Multi-port rotor designs has increased the Performance. High Application Versatility has achieved due to the various sizes and configurations. Accommodate a broad spectrum of material types, with the help of variable operating speed range.

Feeding hopper will feed the materials to the crusher. In the Crushing chamber, the rotor rotates the fed materials, so the input materials are accelerated to the chamber wall liners. There is another alternative flow material known as torrent flow. The torrent flow is actually the overflow from the feed which is directed in such a direction that it comes in contact with the outcoming accelerated feed materials from the rotor to form rock and rock collision.

vertical shaft impact crushers - meka crushing & screening plants

vertical shaft impact crushers - meka crushing & screening plants

Modular oil system includes 160 liters(42 gallons) oil tank, gear pump, relief valves for low pressure oil circulation and high pressure lid lifter circuits, low flow rate shut down switch, oil heater, oil level gauge, oil temperature and lube oil pressure gauges

Excessive vibration alarm system that includes a maintenance alarm to alert you to potential problems. If excess vibration occurs, the vibration switch will shut down the crusher to protect it from possible damage.

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