The selection of mobile crushing plant to build gravel production line needs to be combined with the characteristics of the material, capacity requirements and site conditions, the scientific configuration of equipment, Yonghua Machinery lists the following selection considerations for your reference.
The sand and gravel production line building process and key points
1. Pre-planning and demand analysis
Material type：distinguish between ore (such as granite, basalt, limestone), construction waste, tailings, etc., different material hardness (Mohs hardness), water content, particle size distribution affects equipment selection. For example:
Granite (hard rock, Mohs hardness 6-7) need to use wear-resistant crushing equipment (such as mobile jaw crusher + mobile cone crusher);
Construction waste (including steel bars and concrete blocks) needs to be equipped with iron removal devices and equipment that can crush mixed materials (e.g. mobile impact crusher, mobile impact crusher).
Capacity requirements: according to the daily / hourly production planning equipment specifications, such as 100 tons per hour and 500 tons of production line configuration is significantly different.
Site conditions: If the site is scattered (such as demolition of multiple sites), mobile crushing equipment is preferred; if the site is small or requires flexible transfer (such as construction of mountainous roads), small size, easy to move the tire-type or crawler-type mobile crushing equipment can be selected
Environmental protection standard: It should be equipped with dust removal and noise reduction equipment (e.g. bag filter, sound insulation cover), and ensure that the equipment emissions comply with the local environmental protection regulations (e.g. dust emission concentration ≤ 30mg/m³).
2.Production line process design and equipment configuration
Raw material stockpiling → feeder → coarse crushing equipment → medium and fine crushing equipment → screening device → sand washing machine → product stockpiling
Coarse crushing equipment: commonly used jaw crusher (PE/PEX series), suitable for the initial crushing of various hardness materials, with a large crushing ratio, and the size of the feed opening is selected according to the maximum particle size of the raw material.
Medium and fine crushing equipment: selected according to the hardness of materials:
1. Hard rock (e.g. granite): Cone crusher (spring type / hydraulic type), wear-resistant, suitable for secondary crushing;
2. Medium soft rock (such as limestone, construction waste): impact crusher, after crushing the material particle shape is good, cubic;
3. High demand for shaping (such as mechanism sand production): impact crusher with both crushing and shaping functions.
Screening equipment: linear vibrating screen, according to the requirements of the finished product particle size to choose the number of screen layers (such as 2 layers of screen can be divided into 3 specifications of the finished product), screening efficiency should be ≥ 95%.
Auxiliary equipment: vibrating feeder, conveyor belt, iron remover.
Mobile crushing plant selection guide
1.Mobile crushing plant type and applicable scenes
|
Equipment type |
Structural characteristics |
Applicable Scenarios |
|
Adopt tire chassis, can be transported by road, need semi-trailer tractor to pull, better mobility |
Suitable for short transfers (e.g., municipal construction waste disposal, highway construction projects), level or mildly rugged sites |
|
|
Crawler chassis, self-powered drive, can climb slopes, over obstacles, adapt to complex terrain |
Field mining, mountain demolition, remote area operation without road hardening |
|
|
Cone Crusher as the core, focusing on hard rock medium-fine crushing |
Granite, basalt and other hard rock crushing, the need for secondary crushing scenarios (such as mining stone production line) |
|
|
Focusing on material shaping with the impact crusher at its core |
Crushing of limestone, concrete blocks and other medium-soft rock, requiring good grain shape of the finished product (e.g. sand for commercial mixing plant) |
|
|
Mobile Impact Crushing Plant |
Impact breakers as the core, focusing on the production of mechanism sand |
High-quality mechanism sand preparation, need to combine crushing and shaping (such as fine sand production line) |
2.Selection of key parameters and configuration recommendations
Example: 200 tons per hour construction waste crushing line, optional configuration:
Mobile jaw crushing plant (host PE-750×1060 jaw crusher, capacity 110-320t/h) + mobile impact crushing plant (host PF-1315 impact crusher, capacity 100-280t/h) + mobile screening plant (3YJ1860 vibrating screen, screening efficiency ≥90%).
Hard rock crushing: give priority to crawler type mobile cone crushing plant (e.g. Yonghua HP series cone crusher with long wear-resistant parts life);
Construction waste mixture: choose tire-type mobile impact crusher (such as Yonghua CI series impact crusher, which can crush reinforced concrete and reduce the damage of iron parts).
Iron removal system: the construction waste line must be equipped with strong magnetic iron remover (such as suspended electromagnetic iron remover RCDE-10, adsorption of iron efficiency ≥ 98%);
Dust removal and noise reduction: the mobile station can be integrated with bag dust collector (handling air volume 10000-20000m³/h) and soundproof cover to meet the environmental protection requirements of urban operation;
Intelligent control system: choose the equipment with PLC touch screen control (such as Red Star machine mobile station), which can monitor the operation status of each component in real time and support remote troubleshooting.
To build a sand and gravel production line, we need to take "material characteristics + capacity demand + site conditions" as the core, and the selection of mobile crushing equipment needs to match the crushing process (coarse crushing / medium crushing / sand production) and mobility requirements, and pay attention to the environmental protection of the equipment, the level of intelligence and after-sales support, in order to achieve high efficiency and return on investment, it is recommended that we contact us as a priority in the procurement process. We will provide you with customized solutions within 24 hours.
