With the issuance of national documents on aggregates, local governments have begun to pay attention to the development of the sand and gravel industry. Sand and gravel have been included in the important agendas of local governments and governments at all levels, and relevant policies and documents have been released. This is a big opportunity unprecedented in the sand and gravel industry in a century, and China's sand and gravel industry has entered a new track of high-quality development. If you want to seize this opportunity, you must know that intensive, large-scale, and green are the future development directions of the sand and gravel industry.
The equipment configuration of sand and gravel aggregate production line generally adopts two-stage crushing, coarse crushing and fine crushing. Some stones need three-stage crushing or shaping, and then screening. Commonly used equipment for coarse crushing includes gyratory crusher and jaw crusher. Some use hammer crushers or impact crushers. For medium crushing, impact crushers or cone crushers are used. Vertical impact crushers are commonly used for fine crushing and shaping (sand making machine). For sand and gravel plants, environmental protection is mainly limited to three aspects: dust, noise and sewage. The installation of multi-effect dust removal equipment is necessary. At the same time, the production line adopts a partially enclosed design, and a dust cover is used to collect the generated dust, which can reduce dust pollution to a large extent; the closed board room design can significantly reduce noise pollution and realize one of the important conditions for environmental protection of sand and gravel production lines.
Take the 2000 tons of sand and gravel aggregate production line in Anhui as an example. The project planning is based on the core concept of green mines. The hard rock stripped from the mine is mainly used for comprehensive utilization. The fully enclosed design is adopted. The enclosed board room design can significantly reduce noise pollution makes the sand and gravel production line environmentally friendly. At the same time, taking the supply-side reform orientation of the development demand of high-performance concrete and its high-quality aggregates as the path, select intelligent, environmentally friendly, safe, and high-quality crushing, shaping, screening and control processes to produce high-quality sand and gravel aggregates.
According to the specific requirements of customers, Dahua Heavy Industries organizes a professional technical team to customize the entire production line according to user needs and local actual conditions. After comprehensive consideration and analysis, the following equipment is provided for users: 2 JC160 jaw crushers, 2 DHS2160 heavy-duty vibrating feeder, 4 GPY500S single-cylinder hydraulic cone crushers, 2 HPY500 multi-cylinder hydraulic cone crushers, and 16 YKR3060 vibrating screens.
The production line mainly crushes hard rocks. The DHS series heavy-duty vibrating feeder coarsely screens the materials and feeds them continuously and evenly. The materials enter the JC series jaw crusher for coarse crushing, and then enter the GPY series single cylinder hydraulic cone crusher and HPY series multi-cylinder hydraulic cone crusher are used for medium and fine crushing. Aggregates with excessive granularity are returned to the cone crusher and crushed again. The crushed materials are screened and classified by the vibrating screen. For more information, you can click: www.lydhchina.com