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Current Status and Prospects of Circular Economy Development of Superhard Materials
The **Abstract** section outlines the key features of the super-hard material industry, emphasizing its alignment with a circular economy model. Compared to traditional abrasives, super-hard materials offer lower energy consumption and more sustainable resource use. For instance, carbon used in diamond production is a recyclable resource, while catalytic metals are renewable. The production process also generates fewer pollutants, which can be recycled and reused. Additionally, super-hard tools provide high-performance benefits such as increased efficiency, precision, and longevity, reducing environmental impact across various industrial applications. These advantages make super-hard materials essential for achieving low-carbon and energy-efficient development in modern industries.
In the **Introduction**, it's highlighted that the super-hard material industry plays a crucial role in promoting sustainable manufacturing. Unlike conventional tools, super-hard tools significantly reduce processing time and environmental impact. For example, drilling a well using a diamond drill bit takes only a few months compared to a year with a cemented carbide bit. This not only boosts productivity but also minimizes ecological damage. The high efficiency, quality, and low pollution of super-hard materials make them vital for supporting global efforts in reducing emissions and conserving energy.
Moving on to the **Development Status of Ultra-Hard Materials Recycling Economy**, the focus is on the progress made in recycling diamond and cubic boron nitride (CBN) materials. In the diamond industry, purification processes have evolved to become more environmentally friendly, using advanced electrochemical methods that minimize waste and maximize recovery rates. Similarly, CBN purification has seen improvements through the use of mixed alkalis and electrochemical techniques, reducing toxic emissions and improving efficiency. These advancements are driving the industry toward a more sustainable future.
The **Circular Economy Tools for Superhard Materials** section discusses the recycling of common super-hard tools such as saw blades, drill bits, and grinding wheels. Current recycling methods include chemical, electrochemical-chemical, and inert gas atomization techniques. Each method has its own advantages in terms of recovery rate, purity, and environmental impact. While these methods help conserve resources and reduce costs, there is still room for improvement, especially in the recycling of coated and ceramic-bonded diamond tools.
Looking ahead, the **Prospects for the Development of Ultra-Hard Materials Recycling Economy** emphasize the need for closed-loop systems, clean production environments, and efficient waste management. Future trends include better gas absorption, reduced acid discharge, and improved cost-effectiveness. The goal is to guide the industry toward low-carbon development and ensure China becomes a global leader in super-hard materials.
Finally, the **Conclusion** reinforces the importance of innovation and sustainability in the super-hard materials sector. Implementing a circular economy is not just an option—it's a necessity given the growing demand for resources and the increasing pressure on the environment. Establishing green manufacturing systems and improving recycling technologies will be key to maintaining competitiveness and achieving long-term growth. As China continues to develop, the super-hard materials industry will play a critical role in supporting national policies on low-carbon and sustainable development.