In recent years, emphasis has been placed on improving the utilization of bulk solid waste, thereby reducing pollution and achieving green development. So what are the types of common industrial waste residues and how should they be treated?
Industrial solid waste can be divided into general industrial waste (such as blast furnace slag, steel slag, red mud, non-ferrous metal slag, fly ash, coal slag, sulfuric acid slag, waste gypsum, desulfurization ash, calcium carbide slag, salt sludge, etc.) and industrial hazardous solid waste. Specifically, it can be divided into the following categories:
1. Metallurgical slag
Refers to all residual wastes discharged during or after the smelting of various metals. Such as blast furnace slag, steel slag, various non-ferrous metal slag, ferroalloy slag, iron slag and various dust, sludge and so on. At present, in the treatment of metallurgical waste slag, most iron and steel enterprises will use vertical mills to grind it. The slag vertical mill produced by CHAENG can grind blast furnace slag into slag fine powder with a specific surface area in the range of 400~550㎡/kg, which can meet the different fineness requirements of customers. The ground slag fine powder can be used as an admixture for cement and concrete. Widely used in construction, metallurgy, chemical industry, ceramics and other industries.
2. Mining waste residue
In the mining process of various ores and coals, the amount of slag produced is extremely large, including a wide range of mine-stripped waste rock, coal gangue, mineral processing waste rock, washing waste residue, various tailings, etc. The treatment method at this time is to use a crusher to pulverize it, which is used to produce gangue cement, the lightweight aggregate of concrete, and building materials such as refractory bricks.
3. Fuel residue
The wastes generated after fuel combustion mainly include coal slag, flue ash, pulverized coal slag, and shale ash. It can be further processed by grinding equipment such as vertical mill, crusher, ball mill, etc. For example, coal slag, pulverized coal after deep treatment, has efficient gradation and excellent combustion performance, and is suitable for cement plants, steel plants, power plants and other fields.
4. Chemical waste residue
Industrial waste slag discharged from chemical industry production, mainly including sulfuric acid ore slag, calcium carbide slag, alkali slag, gas slag, phosphorus slag, mercury slag, chromium slag, salt sludge, sludge, boron slag, waste plastic and rubber debris, etc. Industrial solid waste also includes glass waste, ceramic waste, papermaking waste and construction waste. Treatment method: Chemical waste residues can be divided into general industrial waste residues and hazardous chemical waste residues according to the degree of danger. Due to its many varieties, extensive pollution, and difficult governance, it is also more troublesome to deal with. Generally, six methods of incineration, landfill, chemical treatment, biological treatment, anaerobic digestion and marine abandonment are used for treatment.

Therefore, most of the waste residue can be ground into powder by grinding equipment such as vertical mill and ball mill, which can not only solve environmental problems, but also improve the utilization rate of bulk solid waste. In the future, the industrial solid waste recycling industry will enter a golden period of development, and the investment value of solid waste treatment equipment, resource recycling and other sub-sectors will increasingly appear.
Our company has rich experience in the research and development and construction of vertical roller mills and steel slag grinding plant, and is committed to developing energy-saving, low-consumption, high-yield and high-quality grinding equipment! If you have industrial waste slag treatment needs, welcome to consult us online.