Jintongshan Mine is a pilot project for the construction of intelligent green mines in Zhejiang Province, specializing in the extraction of construction stone (tuff). Covering a planned mining area of 1.2398 square kilometers with a resource reserve of 69.31 million tons, it features a designed mining capacity of 13.9 million t/a and a planned mining period of 5 years. 

As the largest construction stone mine in Ningbo in terms of current reserves and expected production scale, it is also the first mine project of Ningbo Communications Investment Group to enter the full-scale production and operation. By the end of August this year, the mine had extracted 5.8087 million tons of ore, generating operating revenue of RMB 413 million.

As the main equipment supplier for Jintongshan's 3,400 t/h aggregate processing production line, Allis Saga has been fully engaged and proactive throughout the entire process—from equipment delivery, installation and commissioning to technical training and after-sales service—providing the customer with rigorous, reliable and professional crushing and screening solutions.

All 96 sets of Allis Saga equipment have been operating efficiently, stably and reliably in the project. Having passed expert acceptance, all equipment complies with national quality standards, meets the designed functional requirements, and achieves the project's designed production capacity. Allis Saga's proactive, responsive, and efficient professional services have earned high recognition from the project owner, supervisor, and user.

Quality and Performance for Premium Products

As the sand and aggregate industry moves toward large-scale, intensive, and high-quality development, it brings favorable opportunities for mining equipment enterprises with advanced technology and superior performance.

With years of dedication to the crushing and screening sector, Allis Saga adheres to international manufacturing standards, and pursues a path of green, environmentally‑friendly development featuring high quality, efficiency, and reliability.

The MJ series jaw crushers and MH series cone crushers used in this project have all obtained authoritative TUV international certification. Additionally, Allis Saga's MH high-efficiency, energy-saving and environmental-friendly hydraulic cone crusher and CS series screeners have been awarded the Mining Equipment Quality Award issued by the National Science and Technology Awards Office (Certificate No. 0265) in 2021 (first session) and 2022, respectively.

Customer Satisfaction Generates Benefits

Allis Saga's equipment has operated stably with high production efficiency at the Jintongshan Project. Tests conducted in April 2022 showed that the production line ran 10 hours per day, consistently achieving an hourly output above 3,400 tons and peaking at 3,600 tons. The entire production line ran stably with excellent product indicators, earning broad customer acclaim and delivering substantial economic benefits.

Comparison Chart of Process Design Values vs. Actual Values

We adjust crusher parameters such as cavity type and eccentricity to optimize the final product structure in response to changing market demands.

Intelligent Digitalization Empowers High-Quality Development of Mines

The construction of intelligent green mines represents a major reform initiative in Zhejiang Province's mineral resources sector, an inevitable choice to keep pace with the development trend of the digital era, and an indispensable path to promote the high-quality and green development of the mining industry.

With a deep understanding of customer needs, Allis Saga has consistently integrated the digitalization concept into the entire process of mine projects. The cone crushers are equipped with the third-generation CIS intelligent control system, which has been validated through extensive tests and on-site applications. Through communication with the factory's central control system, it enables comprehensive intelligent, unmanned management of mine crushing and screening equipment.

This system has obtained multiple software copyrights, and the high-efficiency and environmentally friendly mineral crushing technology used in the equipment has been included in the "Catalogue of Advanced and Applicable Technologies for Conservation and Comprehensive Utilization of Mineral Resources" issued by the Ministry of Natural Resources. It also provided technical support for the "Research Project on Intelligent Construction and Remote Operation of Large-Scale Sand and Stone Aggregate Production Lines" based on this project, which won the Third Prize of the Green Mine Science and Technology Award in 2021.

• The third-generation CIS automatic control system enables real-time monitoring of crusher operating parameters and supports liner replacement planning based on wear conditions, significantly reducing downtime and labor costs;
• The positive pressure air sealing system and the tight internal sealing structure of the crusher minimize the damage from fine particles and dust, extending the service life of components and reducing maintenance workload;
• All maintenance can be performed from the top, and the hydraulic lubrication system makes operation and maintenance simpler, more convenient, and safer.

In addition, the CIS automatic control system allows operators to conveniently monitor and control the equipment from the control room—especially in the hot and humid summers in southern China, significantly reducing worker labor intensity.

Currently, Jintongshan Mine has established production control, safety management, and sales dispatching management systems, achieving transparent status perception, intelligent process control, and smart data services during the production and operation process. A provincial-level intelligent green mine featuring "one model, six systems, and four major platforms" will be completed by the end of the year.

Allis Saga will continue to increase investment in product R&D, promote the application of new processes and technologies, and enhance capabilities in production processes, equipment configuration, and project management. We will deliver full‑lifecycle cost reduction and efficiency improvement solutions to customers, and actively cooperate with customers to continuously explore a new model of safe, efficient, economical, intensive, and green sustainable mining development.