In heavy industries such as sand and gravel aggregates, mining, and metallurgy, large-scale double-roll crushers have become the core equipment for medium and fine crushing operations due to their characteristics of high efficiency, stability, and energy conservation. Their working principle is based on the extrusion crushing mechanism of two rolls rotating towards each other. Materials fall between the two rolls through the feed inlet and are gradually crushed and sheared under high pressure, and then discharged as finished products meeting the particle size requirements through an adjustable roll gap. This process not only achieves precise crushing of medium-hard materials such as limestone, quartzite, and iron ore but also ensures uniformity of the discharged particle size through a hydraulic or spring adjustment system, with the particle size range accurately controlled between 0-20 mm.
Large-scale Double-roll Crusher: Core Equipment for Sand Making
In terms of technological advantages. The large-scale double-roll crusher adopts a low-speed and high-torque design. With a single-machine hourly output of up to 240 tons, representing an increase of over 40% compared to traditional equipment, while reducing energy consumption by 30%. Its wear-resistant roll skins are made of high-chromium alloy material. Extending their service life to over one year. Coupled with an enclosed machine body structure, it effectively suppresses dust overflow and keeps noise below 85 decibels, meeting environmental protection requirements. Additionally, the equipment is equipped with an intelligent overload protection system. When encountering uncrushable materials such as metal, the movable roll automatically retreats to avoid equipment damage and ensure production continuity.
In terms of application scenarios. This equipment is widely used in areas such as raw material crushing in cement production lines. Sand making for construction aggregates. And metallurgical slag treatment. Taking a cement enterprise as an example. It uses an 1800×1000 double-roll crusher to process limestone. Achieving a daily output of 2,000 tons, with a finished product particle size compliance rate of 98%, and reducing operating costs by 25% compared to impact crushers. For sand and gravel plants. This equipment can operate independently or be integrated into production lines as secondary crushers. Flexibly adapting to different scale requirements.
From a market selection perspective. The prices of this equipment vary widely, with mainstream models ranging from 500,000 to 2 million yuan. Depending on factors such as roll face width, motor power, and automation configuration. For example, a device with a roll face width of 1,000 mm and a motor power of 160 kW is suitable for processing high-hardness materials. While an 800 mm roll face model is more cost-effective and suitable for small and medium-sized sand and gravel plants.
With its comprehensive performance of high efficiency, energy conservation, and environmental protection. The large-scale double-roll crusher has become a key piece of equipment for the transformation and upgrading of the sand and gravel industry. Its precise particle size control, low failure rate. And long service life not only reduce corporate operating costs but also drive the industry towards green and intelligent development.
