When buying a vertical shaft impact crusher, everyone will more or less understand what kind of structural composition, advantages and disadvantages this equipment has. In order to facilitate everyone to make a better choice when purchasing mining machinery and buy the machinery suitable for their own use, Smat Machine will introduce in detail what is a vertical shaft impact crusher in this article.

High-efficiency cornerstone equipment in the mining industry

In the mineral processing industry, crushing operation is a key link in ore processing, and its purpose is to crush large pieces of ore into a particle size suitable for subsequent mineral processing. The performance of the crushing equipment directly affects the mineral processing efficiency, cost and product quality. As a high-efficiency crushing equipment, the vertical shaft impact crusher occupies an important position in the mineral processing industry with its unique crushing principle and excellent performance, and is a suitable choice for crusher used for mining.

What is a vertical shaft impact crusher？

Vertical shaft impact crusher is a mining machinery equipment for crushing rocks and making sand. China’s vertical shaft impact crusher has been widely used since the 1980s. Its production processes include dry, wet and semi-dry methods. It is often used in the crushing and sand making process of mines. It has the characteristics of stable and reliable operation, convenient maintenance and high sand making rate. It is particularly suitable for stone shaping and production of machine-made sand. It is widely used in fine crushing operations in industries such as hydropower, construction, cement and metal mining.

How to define a vertical shaft impact crusher?

The name of the vertical shaft impact crusher comes from its unique structure and working principle. The crusher rotor is installed vertically. The material is fed through the center of the rotor and accelerated to high speed, and then discharged through the opening on the outer periphery of the rotor. The material is crushed by the high-speed impact on the material lining in the crushing chamber and the collision of stones. In addition, the vertical shaft impact crusher is also called a sand making machine because it is widely used in the field of sand making.

Vertical shaft impact crusher specification

How does a vertical shaft impact crusher work？

Vertical shaft impact crusher working principle：In the crushing of stones, the vertical shaft impact crusher uses a high-speed rotating rotor to impact and crush the materials. The vertical shaft impact crusher adopts the dual-mode crushing principle of “stone hitting stone” and “stone hitting iron”.

The material enters from the feed hopper and is divided into two parts by the distributor. One part enters the high-speed rotating impeller, is rapidly accelerated in the impeller, and is ejected at a very high speed. First, it is impacted and crushed with the other part of the material falling from the surrounding of the distributor, and then impacts the material lining in the vortex cavity together. After being rebounded by the material lining, it impacts obliquely upward to the top of the vortex cavity, and then changes direction and deflects downward to form a continuous material curtain. The material is subjected to multiple impacts, friction, grinding and crushing in the vortex crushing cavity, and finally discharged from the lower discharge port.

Advantages of vertical shaft impact crusher in mining

Vertical shaft impact crusher has high crushing efficiency and large crushing ratio in the mineral processing industry, and is an efficient equipment for mining ore development.

(I) High crushing efficiency

Vertical shaft impact crusher adopts a unique dual-mode crushing principle. The materials collide and grind with each other under the drive of the high-speed rotating impeller to achieve efficient crushing. Compared with traditional impact crushers, hammer crushers and other equipment, it has significant advantages. The single machine has a large processing capacity. Taking the 200-ton model as an example, the production efficiency is about 30% higher than that of traditional equipment of the same specification, which greatly shortens the production cycle.

(II) Excellent finished product particle shape

The vertical shaft impact crusher sand making machine outputs mostly cubic materials, and the needle-like content is less than 5%. It can be directly used as high-standard concrete aggregate to reduce the subsequent shaping cost. At the same time, the fineness adjustment is flexible. By adjusting the speed, feed amount or replacing the throwing head, the fineness modulus (2.2 – 3.0) of the finished sand can be easily controlled to meet different engineering needs.

(III) Low energy consumption

Using deep cavity rotor + waterfall feeding technology, the material flows by itself to form a lining layer, which reduces equipment wear and energy consumption, and the unit power consumption is 15% – 20% lower than that of traditional equipment.

(IV) Low maintenance cost

The core components of impact crushing and sand making (such as throwing head and peripheral guard plate) are made of high chromium alloy or tungsten carbide. They can be replaced after wear, and the service life is extended by 2-3 times, saving more than 100,000 yuan in annual maintenance costs. In addition, it is equipped with an intelligent monitoring system to monitor the operating status of the equipment in real time, avoid overload or blockage, and reduce manual intervention.

(V) Strong environmental protection performance

The closed structure is equipped with a pulse dust collector, and the dust concentration at the work site is less than 30mg/m³, which is far below the national emission standard. The equipment operating noise is ≤75 decibels, which is 20% lower than that of traditional sand making machines, and is suitable for use in sand plants near residential areas.

China vertical shaft impact crusher manufacturer

Zhengzhou Smat Machinery Equipment Co., Ltd. is a modern mining machinery professional manufacturer integrating crushing, sand making, screening and supporting equipment. The company is located in Zhengzhou City, Henan Province. Smat Machinery has built its own brand with its unique professionalism through years of unremitting efforts and continuous innovation, using modern management experience, integrating technology and research and development.

Smat Machine’s main production equipment includes: jaw crusher, cone crusher, impact crusher, sand making machine, mobile crushing station, etc., with a full range of equipment models and superior quality.

3 applications of vertical shaft impact crusher in ore dressing

1. Auxiliary in Coarse Crushing

In the coarse crushing stage of ore dressing, the vertical shaft impact crusher can be used in conjunction with equipment such as jaw crusher. Although it is mainly used for medium and fine crushing, in some cases, it can also participate in the preliminary crushing of materials with moderate hardness and not particularly large particle size to improve the production efficiency of the entire ore dressing process.

2. Core of Medium and Fine Crushing

In medium and fine crushing operations, the vertical shaft impact crusher is the core equipment. By accurately adjusting the equipment parameters, the ore can be crushed into a particle size suitable for grinding and improve the grinding efficiency. For example, in iron ore dressing, the ore treated by the vertical shaft impact crusher has a uniform particle size, which is conducive to subsequent grinding and separation operations and improves the recovery rate of ore dressing.

3. Tailings treatment and reuse

In mine tailings treatment, the vertical shaft impact crusher can recover and reuse the useful components in the tailings. Through crushing processing, large pieces of material in the tailings are broken into fine particles, which is convenient for subsequent mineral separation and reduces resource waste and environmental pollution.

What is the use of vertical shaft impact crusher?

Product use of vertical shaft impact crusher

1. Artificial sand making of river pebbles, mountain stones (limestone, granite, basalt, diabase, dolomite, andesite, etc.), ore tailings, wet coal, and stone chips.

2. Production of machine-made sand and stone shaping for water conservancy and hydropower, high-grade highways, expressways and railways, passenger dedicated lines, bridges, airport runways, municipal engineering, and high-rise buildings in the engineering field.

3. Production of construction aggregates, road surface materials, cushion materials, asphalt concrete and cement concrete aggregates.

4. Fine crushing process for the front section of grinding in the mining field, material crushing in the building materials, metallurgy, chemical industry, mining, refractory materials, cement, abrasive and other industries.

5. Highly abrasive and secondary disintegration crushing, desulfurization in thermal power and metallurgical industries, and environmental protection projects such as steel slag and construction waste treatment.

6. Production of glass, quartz sand and other high-purity materials.