Through the intelligent green mining solution of Liming Group, the Zhejiang Tuff Project has achieved an hourly production of 800 tons of fine aggregates, dust emission ≤10mg/m3, and wastewater reuse rate ≥90%, which has helped the construction of Hangzhou-Ningbo Smart Highway and demonstrated the green and intelligent transformation benchmark of the sand and gravel industry.

Zhejiang is not only a Jiangnan water town with a thousand-year-old ancient charm, but also a frontier for the intelligent transformation of the sand and gravel industry! Liming Group has been deeply involved in the mining equipment industry for more than 30 years. Relying on a complete R&D system, a large production base, and a good market service system, it has created one intelligent green mining benchmark project after another on this beautiful land of Zhejiang.

Click to consult to understand the construction plan of the sand and gravel aggregate production line

Project model: The way to success of the Zhejiang Tuff Project

Under the careful planning of Liming Group, the project successfully completed the overall upgrade of sand and gravel aggregates. The entire mine has regained new vitality on the road of green transformation, just like a former gold mountain shining brightly again.

Project Overview

Raw materials: tuff

Output: 800t/h

Finished products: 0-5-16-26-31.5mm or 0-5-10-16-22mm fine sand and gravel aggregates

Equipment: F5X feeder, C6X jaw crusher, HST single-cylinder cone crusher, HPT multi-cylinder cone crusher, VSI6X impact crusher, S5X vibrating screen

Project Introduction/THE CASE OF SBM

The project faced three major challenges in the early stage of construction: First, the local sand and gravel resources were in short supply, and ensuring stable supply became the top priority; second, the environmental performance of traditional sand and gravel processing technology did not meet the standards and urgently needed to be upgraded; third, the sand produced by traditional sand making technology had poor particle shape and unsatisfactory grading.

Liming Group adheres to the design concept of industrial park, intelligence, green and modularization, and tailors a one-stop solution for customers: combining dry and wet processes, using spray dust suppression and dust removal systems to significantly reduce dust emissions; water washing sand making combined with sewage treatment to achieve zero emissions, truly practicing green production. Optimize the combination of crushing and sand making equipment to ensure that the sand and gravel aggregates have perfect particle shape and accurate grading.

The production line is equipped with F5X feeder, C6X jaw crusher, HST single-cylinder cone crusher, HPT multi-cylinder cone crusher, VSI6X impact crusher and S5X vibrating screen. The entire production line is highly efficient and coordinated to ensure a stable output of 800 tons of fine aggregates per hour.

Project Benefits/THE CASE OF SBM

In terms of environmental protection, the project complies with the green mine construction standards and has become a local garden-style mine; in terms of production benefits, it produces 800 tons of fine aggregates per hour, and the finished products will help the construction of the first phase of China's first smart highway-Hangzhou-Ningbo Expressway Double Line Ningbo Section, and the construction of the Hangzhou Bay "Greater Bay Area"; in intelligent production, the production line adopts an intelligent loading system, and the logistics loading cost is reduced by 10%-20%; centralized control is intelligent, and 80% of operating failures can be solved remotely; in terms of safe production, details are controlled to fully protect the lives of workers.

Technical Highlights/THE CASE OF SBM

Intelligent System

● Remote Operation and Maintenance: The Liming Cloud Platform monitors the current, temperature, and vibration data of the equipment in real time, with a fault warning accuracy of 95%, and the operation and maintenance response time is shortened to 2 hours.

● Automatic adjustment: The HPT cone crusher hydraulic system automatically adjusts the discharge port according to the load, reducing manual intervention and saving 15% of electricity.

● Energy efficiency management: VSI sand making machine frequency conversion control, dynamic power adjustment, power consumption per ton reduced to 9.2kWh.

Green design

● Dust control: Closed production workshop + pulse bag dust removal system, dust emission is stable ≤10mg/m³, in line with Zhejiang's "ultra-low emission" standard.

● Water recycling: Sand washing wastewater is treated by three-stage sedimentation + membrane filtration, with a reuse rate of ≥90%, saving 120,000 tons of water annually.

● Noise control: Equipment soundproof cover + factory sound barrier, noise value ≤65dB (A), to solve the problem of nighttime nuisance complaints.