Clay slag waste rock can be processed into sand and gravel aggregates, and the efficiency can be improved by using jaw, cone or impact crusher and impact sand making machine, and mobile crushing station. Zhejiang Jiaogong case produces 1.8 million tons per year, which is environmentally friendly and efficient. The finished products are used in transportation projects, achieving a win-win situation.

In the construction of tunnels, mines and other projects, a large amount of slag waste rock is often produced. If these stones and stone chips are not properly handled, they will not only occupy land resources, but also cause environmental pollution. However, by processing slag waste rock into sand and gravel aggregates, these industrial wastes can be used as resources, reducing production costs while promoting a virtuous cycle of environmental protection and economy. So, how can slag waste rock be converted into high-quality building sand and gravel aggregates? What equipment is needed? This article will introduce it in detail.

Learn more about slag waste rock crushing and sand making equipment

The environmental advantages of preparing sand and gravel aggregates from slag waste rock

Slag waste rock is often regarded as waste and discarded, but in fact they contain certain mineral components and strength, which are suitable for processing into building materials. Through reasonable crushing and screening equipment, slag waste rock can be turned into sand and gravel aggregates that meet the needs of engineering construction. This not only reduces the stacking of waste and pollution, but also saves natural sand and gravel resources, realizes the recycling of resources and the low-cost operation of enterprises.

Main equipment for preparing sand and gravel aggregates from tunnel slag and waste stone

Coarse crushing equipment: Jaw crusher is usually used. This type of equipment has a large feed inlet, simple operation, and can stably crush large pieces of stone, which is very suitable for the initial processing of tunnel slag.

Fine crushing equipment: Depending on the hardness of the stone, cone crusher or impact crusher can be selected. Cone crusher is suitable for high-hardness stone such as granite, while impact crusher is suitable for medium and low hardness materials, and the finished product particles are uniform and crack-free.

Sand making equipment: Impact sand making machine is a commonly used equipment with the characteristics of uniform discharge and good finished product quality. It is suitable for further shaping of processed materials and improving the quality of finished sand and gravel.

Mobile crushing station: Compared with fixed equipment, mobile crushing station is widely used in engineering projects, especially suitable for processing tunnel slag. The equipment is flexible and movable, and can be processed directly at the slag stacking point, reducing the transportation cost of raw materials and being more efficient.

Typical case sharing: Zhejiang Jiaogong's 1.8 million tons of tunnel slag sand making project

Zhejiang Jiaogong and Shibang Group jointly built a tunnel slag crushing and sand making production line with an annual output of 1.8 million tons. The project uses advanced C6X jaw crusher, HST single-cylinder hydraulic cone crusher, HPT multi-cylinder hydraulic cone crusher, VSI6X vertical shaft impact crusher and other equipment, and combines dry processing technology to achieve green and environmentally friendly and efficient production. The finished sand and gravel are used in the construction of the Hangzhou-Jinhua-Quzhou Expressway to Hangzhou-Shaotai Expressway connecting line, helping the development of key transportation engineering projects in Zhejiang Province.

Project highlights:

Green and environmental protection: dust and sewage emissions meet the standards and meet environmental protection requirements.

Intelligent and efficient: intelligent operation, production management is more convenient and efficient.

Reasonable layout: The equipment layout is reasonable and meets the needs of site construction.

Finished product quality: good particle shape, finished aggregate meets the strict standards of engineering construction.

Summary

Tunnel slag waste rock can be converted into high-quality sand and gravel aggregate through scientific crushing and screening processes. With jaw crushers, cone crushers, impact sand making machines and other equipment as the core, combined with the flexibility of mobile crushing stations, it provides strong support for the rational use of tunnel engineering and mining resources, and achieves a win-win situation of economic benefits and environmental protection.