Under the leadership of the "carbon neutrality" goal and the continuous deepening of ecological civilization construction, the resource utilization of industrial solid waste has become an important direction for promoting green transformation. Against this backdrop, the Nanjing Environmental Protection Steel Slag Deep Processing Project emerged, opening up a "rebirth" path for steel slag, which has long been overlooked as an "industrial by-product"
Project Overview: Establishing a benchmark project for steel slag resource utilization

The project is located in Nanjing City, Jiangsu Province. It has a designed annual processing capacity of 200,000 tons of steel slag, and is committed to achieving the effective recycling and comprehensive utilization of steel slag. The project covers all the key links of the steel slag deep processing process, including:
Scientific and reasonable process layout design
Optimized configuration of core equipment such as rod mills, crushers, and magnetic separators
Construction of civil engineering, ensuring that the production site meets the process requirements
Customization of non-standard equipment to meet special operating conditions
Supply of equipment, installation and commissioning, as well as system integration testing
Through integrated implementation, the project has achieved an effective closed-loop from raw material input to resource output, providing a replicable and scalable system solution for the resource utilization of steel slag.
ZK: Full-process construction, high-standard delivery
Henan Zhengzhou Mining Machinery Co., Ltd., as the main contractor of this project, is responsible for equipment supply, process layout, non-standard component manufacturing and installation and commissioning, etc. As the contractor, ZK has always adhered to the principle of putting the customer at the center and following the standards to ensure the products and services provided.、
Completely in line with the technical protocol requirements
Meet the new national industry standards
Effectively respond to all specific demands of the client
In terms of equipment quality, all components are manufactured using advanced and reliable processing and manufacturing technologies, ensuring high surface geometric accuracy and reasonable tolerance fits, which guarantees the long-term stable operation of the equipment. Especially in terms of national mandatory standards such as safety, occupational health, and energy conservation and environmental protection, ZK strictly adheres to them without any compromise, firmly holding onto the bottom line of project compliance and safety.
Project Significance: Achieving Triple Economic, Environmental, and Social Benefits
This project is not only a technical practice but also a proactive exploration of sustainable development, with far-reaching comprehensive benefits.
1. Significant Environmental Benefits
It effectively addresses the problems of soil pollution, water leakage, and dust emission caused by the long-term storage of steel slag, significantly reducing the pressure of industrial solid waste on the ecological environment and contributing to regional green development.
2. Effective Resource Utilization
Steel slag is rich in valuable elements such as iron, calcium, and silicon. Through processes such as crushing, grinding, and magnetic separation, metallic iron resources can be effectively recovered. The tailings can be used to produce building materials, roadbed materials, and other materials, truly achieving "full utilization" and building a circular economy model of "resources-products-waste-renewable resources."
3. Significant Economic Benefits
The recovered ferromagnetic material can be reused as raw material for steelmaking, reducing the company's raw material costs. Exporting byproducts generates additional revenue, while reducing solid waste disposal costs and improving overall economic benefits.
4. Outstanding Social Value
The project has created local employment opportunities and promoted the development of a green industrial chain. Its successful experience provides a model for solid waste treatment in the metallurgical and building materials industries, providing a strong industry leadership role.
ZK Machinery's Strength: Craftsmanship, Forging a Green Future
Henan Zhengzhou Mining Machinery Co., Ltd. is a national high-tech enterprise with strong R&D and engineering general contracting capabilities. The company consistently upholds the core cultural philosophy of "Virtue First, Benefit Second," adheres to the operating principles of "Integrity, Detailed Workmanship, and Service First," and ensures the effective implementation of projects with a commitment to "Timely Delivery and Payment." From design to on-site commissioning, ZK Machinery provides full lifecycle services, committed to achieving win-win cooperation with customers.
The smooth progress of the Nanjing steel slag deep processing project is a vivid example of ZK Machinery's commitment to green development and a microcosm of China's industrial progress toward high-quality development. Steel slag is not the end, but a new starting point for resource recycling. Going forward, ZK Machinery will continue to be driven by technological innovation and driven by responsibility, helping more companies achieve "waste-to-treasure."