Mobile Crushers - A Powerful Tool For The Secondary Utilization Of Construction Waste

Mobile Operation: Mobile crushers (such as tire-type or crawler-type) integrate main crushing units, feeders, screening equipment, etc., and can be quickly transported to construction waste sites (such as demolition sites, road construction points, etc.) by vehicle or self-propulsion. They eliminate the need for fixed-site installation, saving transportation costs and time.

Flexible Deployment: Especially suitable for the urban demand of "demolishing and processing simultaneously," they avoid secondary pollution and traffic pressure caused by long-distance transportation of construction waste. For example, in the renovation site of old residential areas, mobile crushers can directly enter the site to crush waste materials such as concrete blocks and bricks on the spot.

Multi-type Material Processing: Construction waste mainly includes concrete, reinforced concrete, bricks, stone, asphalt, etc. Mobile crushers can adapt to materials of different hardness by configuring different crushing cavity types (such as jaw crushers, impact crushers, cone crushers, vertical shaft impact crushers, etc.):

 Jaw Crushers: Suitable for coarse crushing of hard concrete blocks and rocks;

 Impact Crushers: Suitable for medium and fine crushing of bricks and concrete particles to produce recycled aggregates with regular shapes;

 Vertical Shaft Impact Crushers: Can further process aggregates to meet the standards of construction sand.

Steel bar separation function: Some equipment is equipped with a steel bar sorting device, which can separate concrete from steel bars during the crushing process, realize metal recycling (steel bars can be remelted in a furnace), and improve resource utilization.

One-stop Crushing and Screening: Mobile crushers typically come with a built-in screening system, enabling integrated operations of "crushing - screening - discharging," and directly producing recycled aggregates of different particle sizes (such as 0-5mm, 5-10mm, 10-30mm, etc.) to meet different reuse needs (such as road bases, raw materials for recycled bricks, concrete aggregates, etc.).

Flexible Production Capacity: Small-scale equipment has a production capacity of 50-100 tons per hour, while large-scale equipment can reach over 300 tons per hour, allowing flexible selection of models according to the volume of construction waste to be processed.

Reduction of Environmental Pollution:

 On-site crushing avoids waste accumulation that occupies land, and reduces dust and sewage emissions;

 Some equipment is equipped with dust removal and noise reduction devices (such as pulse dust collectors and soundproof enclosures), complying with environmental protection requirements.

Reduction of Comprehensive Costs:

 Eliminates waste transportation costs (construction waste transportation costs account for 30%-50% of the total processing cost);

 Recycled aggregates can replace natural sand and gravel, reducing material costs for construction projects (the price of recycled aggregates is approximately 50%-70% of that of natural sand).

Processing Objects: Concrete beams and columns, walls, floor slabs, bricks, etc.

Process: Mobile crushers directly enter the demolition site to crush waste materials into recycled aggregates, which are used for subgrade cushion layers in new construction projects, temporary road paving, or the production of recycled building materials (such as recycled concrete and permeable bricks).

Processing Objects: Waste asphalt pavement, cement pavement.

Process: Crushed asphalt aggregates can be directly used for road recycling (cold recycling or hot recycling processes), and cement aggregates can serve as base layer materials, achieving the circular utilization of "old road waste - new road materials."

Characteristics: Narrow sites and sensitive surrounding environments (requiring low noise and low dust).

Equipment Selection: Small crawler-type mobile crushers (such as those equipped with a jaw crusher + impact crusher combination), which can operate in confined spaces and are flexibly powered by vehicle-mounted generators or external power supplies.

Select the main machine according to material characteristics: If the construction waste has a high steel content, prioritize equipment with steel separation functions (such as those equipped with iron separators or hydraulic sorting devices); if there is a large difference in material hardness, choose a multi-stage crushing combination (e.g., coarse crushing + medium crushing + screening).

Choice of mobility method: For urban road operations, tire-type mobile crushers (requiring trailer towing) can be selected; for mountainous areas or complex terrains, crawler-type mobile crushers (self-propelled, suitable for muddy and steep environments) are more appropriate.

Meet local environmental protection standards: It is necessary to be equipped with devices such as dust collection and sewage sedimentation to prevent on-site operations from polluting the surrounding environment.

Standards for application of recycled aggregates: Different countries/regions have varying specifications for the use of recycled aggregates (e.g., China's GB/T 25177-2010, the EU's EN 12620, etc.). It is essential to ensure that the indicators of crushed aggregates (such as particle size, crush value, and mud content) comply with the standards for their target applications.

Front-end Pretreatment: If construction waste is mixed with large amounts of impurities such as wood, plastic, and metal, manual sorting or screening equipment (such as drum screens or vibrating screens) must first be used to remove them, avoiding blockages in the crusher.

Back-end Utilization Channels: In advance, connect with downstream customers such as building material factories and mixing plants to ensure stable sales channels for recycled aggregates and prevent re-accumulation of processed materials.