The stone crushing plant is a special equipment used to produce sand and gravel aggregates used in construction, highways, railways, water conservancy, mining and other industries. Generally speaking, a crushing plant is an entire production line composed of different equipment such as jaw crusher, cone crusher, sand making machine, sand washing machine, vibrating screen, and belt conveyor. According to the specific needs of different customers, we can customize personalized production line configurations.
Applications of stone crusher plant
The stone crushing plant can process a wide variety of raw materials, including river pebbles, limestone, construction waste, granite, iron ore, basalt, gypsum, etc. The difference in raw materials will directly affect the selection of crusher model and the output of the production line.
Crushing plant are widely used in infrastructure construction, mining, garbage treatment, stone processing, railways, highways, water conservancy projects and other fields to provide them with high-quality sand and gravel aggregates.
From mining, construction, garbage disposal to metallurgy, stone processing, etc., they are all inseparable from the key process of crushing. It can not only help reuse resources, reduce costs, and improve production efficiency, but also has a positive effect on environmental protection.
Workflow of stone crushing and screening plant
The process flow of the stone crushing and screening plant includes feeding, crushing, screening, transportation and other links. If the requirements for the particle size of the finished product are high, sand making and other steps will be added after screening.
The following takes the configuration of a common crushing production line as an example to introduce its workflow. The production line includes vibrating feeder, belt conveyor, jaw crusher, cone crusher, vibrating screen, etc.:
First, raw materials need to be transported from the quarry to the construction site through transport equipment such as dump trucks. Then the raw materials are fed into the jaw crusher through a vibrating feeder. The materials undergo primary crushing in the jaw crusher.
The crushed materials enter the cone crusher through the belt conveyor for secondary crushing. The crushed materials are sent to the vibrating screen by a belt conveyor for screening. The screened materials, if they meet the particle size requirements of the finished product, can be directly sent to the stockpile through the belt conveyor. Materials that do not meet the particle size requirements of the finished product are transported again by the belt conveyor to the cone crusher for re-crushing until the materials meet the particle size requirements of the finished product.
It needs to be emphasized that different engineering projects and raw material types will lead to differences in the crushing plant process flow. Therefore, in practical applications, engineers need to develop suitable process flows and configurations based on specific conditions.
Choose different crusher machines for different crushing stages
In order to produce sand and gravel aggregates of suitable particle size for a complete crushing production line, the raw materials generally need to go through three to four crushing and shaping processes. At different crushing stages, different stone crushers are required. Using the different characteristics of the equipment, the raw materials can be crushed to the required particle size.
Primary crushing stage (coarse crushing)
Primary crushing, also known as coarse crushing, is mainly used for the preliminary crushing of bulk materials. The particle size of the crushed materials is generally larger. In the primary crushing stage, the feed particle size is about 500 to 1500 mm, and the discharge particle size is generally 100 to 350 mm. Commonly used crushers in the primary crushing stage include jaw crushers and gyratory crushers.
Jaw crusher is an earlier type of crushing equipment. It has the advantages of simple structure, reliable operation, convenient maintenance and low cost. It mainly crushes materials through the mutual extrusion of jaw plates, and is the first choice for crushing hard materials such as granite.
Gyratory crusher is also called vertical compound crusher. Due to its high crushing efficiency, large feed particle size, simple production process and low maintenance cost, the gyratory crusher has always been an ideal equipment for coarse crushing of hard materials in large mines and other fields.
Seondary and tertiary crushing (medium and fine crushing)
Secondary and tertiary crushing, also known as medium crushing and fine crushing, mainly crush the materials after primary crushing. If a larger discharge particle size is required, secondary crushing can meet the requirements; if a smaller discharge particle size is required, tertiary crushing is required.
In the secondary crushing stage, the material is crushed from 350~100mm to 100~40mm.
In the tertiary crushing stage, the material is broken from 100~40mm to 30~10mm.
The most commonly used crushers in medium and fine crushing are cone crushers and impact crushers. In recent years, due to the emergence of fine jaw crushers, their lower costs have also been welcomed by some customers.
Cone crusher is mainly suitable for crushing various rocks and ores with medium and above hardness such as granite and pebbles. Common types of cone crushers include spring cone crushers, Symons cone crushers, compound cone crushers, hydraulic cone crushers, etc. Customers can choose the appropriate cone crusher according to actual needs.
Impact crusher is a device that uses impact energy to crush materials. It is mainly used to crush brittle materials with medium hardness and below. The materials crushed by the impact crusher are mostly in the shape of cubes. At the same time, it also has the characteristics of high production efficiency, large crushing ratio, good product particle shape, and strong impact resistance.
Sand making and shaping stage
If the size and shape of the produced materials cannot meet your requirements, you can consider adding a sand making machine to crush and shape the materials again. The commonly used equipment at this stage is a sand making machine.
Sand making machine can also be called vertical shaft impact crusher. It is widely used in sand making and shaping of limestone, river pebbles, granite, tailings and other materials. It can provide high-quality sand and gravel aggregates for highways, municipal projects, concrete mixing plants, etc. Generally speaking, the feed particle size of the sand making machine is less than 40 mm, and the discharge particle size is 0 to 10 mm.
Sand washing stage
As the market's requirements for the quality of finished sand increase, sand washing machines are becoming more and more popular among customers. The sand washing machine can wash away soil and other impurities in the finished sand to achieve purification.
Common sand washing machines include spiral sand washing machines and wheel bucket sand washing machines. Customers can choose different sand washing equipment according to their needs.
Mobile stone crushing plant
Mobile crushing plants are mainly used for material processing that often require relocation operations, especially for engineering operations with high mobility such as highways, railways, and hydropower projects. Users can adopt a variety of configurations according to the type and scale of processed raw materials and finished product material requirements.
Types of mobile crushing plant
Mobile crushing plants can be divided into crawler-type mobile crushing plants and tire-type mobile crushing plants.
The crawler-type mobile crushing plant can be moved by itself and operated by wireless remote control. It is mostly used in mountainous areas, wetlands and harsh mining environments.
The tire-type mobile crusher plant is semi-mobile and needs to be towed by a semi-trailer when traveling. It is mostly used for construction waste disposal, earthworks, and construction.
Features of mobile crusher plant
- Strong mobility: Different crushing equipment are installed on independent movable chassis. The wheelbase is short and the turning radius is small, so it can travel flexibly in the working area.
- Reduce material transportation costs: The mobile crushing station can process materials on site without having to move the materials away from the site for reprocessing, which greatly reduces material transportation costs.
- Integrated complete unit: The integrated unit eliminates the complicated site infrastructure work of separate components and reduces the consumption of materials and time. The compact space layout improves the flexibility of use.
- Flexible combination and strong adaptability: The tire mobile crushing plant can form a process of "crushing first and then screening" or "screening first and then crushing" according to different crushing process requirements. The mobile crusher plant can be combined into a two-stage crushing and screening system of coarse crushing and fine crushing according to actual needs, or it can also be combined into a three-stage crushing and screening system of coarse crushing, medium crushing and fine crushing, which has strong flexibility.
FAQ
Q: How to get a quotation for a stone crushing plant?
A: Customers need to tell us: 1. What is the required output per hour? 2. What are the raw materials? 3. What is the feed size? 4. How many kinds of ingredients are produced? What are the output sizes?
We make plans and provide quotations for our customers based on their requirements.
Q: Is your mobile crushing plant one vehicle or two vehicles?
A: Different designs can be made based on customer output requirements and local road conditions.
Q: Can your crushing plant produce materials of different sizes?
A: Yes, no problem. Generally, materials are produced in 4 specifications, 0-5mm, 5-10mm, 10-20mm, and 20-30mm.
Q: How to install a crushing and screening plant?
A: We can send 1-2 engineers to the customer site to guide the installation, and we can train local operators.
