30 t/h Double Roll Crusher | Preferred Solution for Limestone Crushing
For crushing and processing medium-to-low hardness materials such as limestone, the 30-ton per hour double-roll crusher, with its unique structure and working principle, has become an ideal choice for many mines and aggregate plants.
As a mining crushing equipment manufacturer with 20 years of R&D and manufacturing experience, we will combine our extensive technical expertise to deeply analyze how this model creates stable and efficient production value for our customers.
Analysis of Equipment Core Advantages
The 30-ton/hour double-roll crusher (also known as a roller crusher) performs exceptionally well in crushing limestone. Its core advantages stem from the following aspects:
1. Uniform and controllable output particle size: The two rollers rotate in opposite directions, and the output particle size can be precisely controlled by adjusting the gap between the two rollers. This is particularly suitable for aggregate production with strict requirements. For limestone, it can easily produce finished products of 5-10mm or finer, meeting different grading requirements.
2. Strong overload protection: The equipment is usually equipped with a spring or hydraulic adjustment device. When unbreakable objects (such as iron blocks) enter the crushing chamber, the rollers can automatically retract to discharge the foreign objects, preventing damage to the core components of the equipment and significantly reducing the risk of unexpected downtime and maintenance costs.
3. Simple structure and stable operation: Compared with other complex crushing equipment, the double-roll crusher has a compact structure, fewer maintenance points, simple operation, and a low failure rate, ensuring the continuous and stable operation of the production line. This is a solid foundation for achieving a stable production capacity of 30 tons per hour.
4. Low energy consumption and low over-crushing rate: Using the extrusion crushing principle, it produces less dust and has relatively low energy consumption. At the same time, due to static pressure crushing, it effectively reduces the over-crushing of limestone, improving the proportion and economic benefits of the finished product.
5. Strong adaptability: It can not only perfectly process medium-to-low hardness materials like limestone, but also has a certain adaptability to sticky and wet materials such as clay and coal gangue, making it widely applicable.
30tph Double Roller Crusher For Crushing Limestone
Sharing of Actual Application Cases
We once provided a limestone pre-treatment production line with a 30-ton/hour double-roll crusher as the core equipment to a large cement batching plant in East China. The client's core requirement was to crush limestone raw materials with a particle size of ≤200mm down to ≤10mm, while ensuring stable production capacity, low dust emission, and simple maintenance.
Solution: We configured a heavy-duty plate feeder, our 2PG1260 double-roll crusher (with a capacity of 30-35 tons/hour), and a matching vibrating screen and dust removal system.
Operating Performance: Since commissioning, the equipment has consistently met the required output particle size (over 90% between 5-10mm), operating smoothly with an average hourly processing capacity of approximately 32 tons. The client particularly praised its simple maintenance and excellent iron protection capabilities. Over the past two years of operation, it has successfully prevented multiple shutdowns caused by tramp iron, resulting in significantly improved overall efficiency.
Related Equipment Recommendations
When planning a complete limestone crushing production line, a 30-ton/hour double-roll crusher is typically used as the core equipment for medium and fine crushing. We recommend considering the following supporting solutions to maximize efficiency:
| Primary Crushing | A jaw crusher can be used for coarse crushing to pre-process large pieces of limestone to a size suitable for the double-roll crusher (e.g., ≤200mm). |
| Screening and Closed-Loop Circulation | A circular vibrating screen can be configured to classify the crushed material. Qualified material goes to the finished product silo, while oversized particles are returned to the double-roll crusher for further crushing, forming a closed-loop system to improve overall efficiency and product quality. |
| Feeding and Conveying | A heavy-duty plate feeder ensures uniform feeding, and a belt conveyor system connects the various process stages. |
Frequently Asked Questions (FAQ)
Q1: Can this 30-ton/hour double-roll crusher handle limestone with high moisture content?
A: Yes. The double-roll crusher is designed to handle sticky materials. Our equipment uses special patterns or wear-resistant surfacing on the roller surface to increase friction and prevent sticking. It still has good processing capabilities for sticky and wet limestone within a certain moisture range. For materials with excessively high moisture content, pre-drying or a drying system is recommended.
Q2: What is the approximate wear life of the roller shell? Is replacement complicated?
A: The roller shell is made of high-manganese steel or composite alloy casting, offering strong wear resistance. When crushing limestone (Mohs hardness approximately 3-4), the normal service life can reach 6-12 months, depending on the actual operating time and the impurity content of the material. Our roller assembly features a modular design, making the replacement of the roller shell or the entire roller assembly relatively simple, minimizing downtime.
Q3: Is the production capacity adjustable? How to ensure an accurate 30 tons/hour production capacity?
A: The production capacity can be adjusted within a certain range by adjusting the roller gap and feeding speed. To ensure a stable rated capacity of 30 tons/hour, the key is uniform and continuous feeding, and controlling the input particle size within the equipment's design range (usually recommended to be no larger than 1/20 of the roller diameter). We will assist customers in optimizing the entire feeding and crushing process during the equipment commissioning phase to achieve optimal operating conditions.
Q4: What are the advantages of this crusher compared to hammer crushers and impact crushers for crushing limestone?
A: Compared to hammer crushers and impact crushers, the core advantages of the double-roll crusher for crushing limestone are better product particle shape (more cubic particles, fewer flaky particles), uniform and controllable particle size, less over-crushing, fewer wear parts, and simpler maintenance. It is especially suitable for customers who have strict requirements on product particle size and want to reduce long-term operating and maintenance costs.
Perfect after-sales service
Baichy Heavy Industry provides professional on-site guidance for installation, training of workers, and other services to ensure that customers can use the equipment smoothly.
The company has a complete after-sales service system, which can provide customers with timely technical support and equipment maintenance services to ensure the long-term stable operation of the equipment.
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Baichy Heavy Industry
Baichy Machinery is a factory supplier of mining machinery, mainly focusing on stone crushers, powder grinding mills, and mineral beneficiation plants. We can offer you a free design and completed solutions according to your project.
Baichy Heavy Industry has grown into a high-tech mining equipment comprehensive enterprise, integrating R&D, manufacturing, sales, and after-sales service, Passing ISO9001:2015 quality management system certifications. The main products are mobile jaw crushing plants, construction waste crushing plants, PE jaw crushers, VSI sand-making machines, Symons cone crushers, single-cylinder hydraulic cone crushers, PCX high-fine crushers, grinding mills, ball mills, and full sets of beneficiation equipment with an excellent level.
