Summary:Industrial solid waste comes from industrial production activities, and its usable value is not low. Experts pointed out that compared with waste water and wast
Industrial solid waste comes from industrial production activities, and its usable value is not low. Experts pointed out that compared with waste water and waste gas, industrial solid waste is easier to realize resource utilization. After proper process treatment, industrial solid waste can become industrial raw materials or energy sources, such as building materials such as cement, sand and gravel aggregates, and metal and rare metals can be extracted from them, or fertilizers and soil amendments can be made.
Application(Take the waste rock as an example)
The requirement for railway ballast is not fragile under vibration pressure. Of course, rocks with developed schistosity or bedding are not suitable for use as ballast, while limestone and basalt are more suitable for railway ballast.
Basic raw materials or mixed raw materials of cement。
The basic raw materials of cement are limestone and clay ore, and limestone, clay stone, and shale are all common waste rocks in mines. In addition, those with higher amorphous content in waste rock, such as vitreous volcanic rock, tuff, pumice, etc., can also be used as active mixing materials.
Landfill open pit
The waste rock is discharged into the open pit that has existed in the past, and then covered with a certain thickness of arable soil to make it arable land. This is the approach that some mines are adopting.
At present, the lack of sand and gravel resources in my country and the extremely unbalanced market supply and demand have caused the price of sand to rise again and again. In the long-term mining and production process of metal and non-metallic mines, a large amount of waste rock is produced, which can be processed into sand. Stone aggregate has eased the contradiction between supply and demand to a certain extent.
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