What can gangue be processed? Explore the reuse value of waste ore
Coal gangue is a solid waste generated during coal mining and washing and has long been regarded as an environmental burden. However, with the advancement of technology and the popularization of environmental protection concepts, the reuse value of coal gangue has been gradually explored. This article will combine popular topics and hot topics across the network for the past 10 days to explore the processing direction and application fields of coal gangue, and display its specific uses through structured data.
1. Basic characteristics of coal gangue
Coal gangue is mainly composed of carbon, silicon, aluminum, iron and other elements, and has high hardness and chemical stability. According to its composition and properties, coal gangue can be divided into the following categories:
| type | Main ingredients | characteristic |
|---|---|---|
| Carbon gangue | Carbon, ash | Highly flammable |
| Mud gangue | Clay minerals | Good plasticity, suitable for brick making |
| Sand gangue | Quartz, feldstone | High hardness, suitable for aggregate |
2. Processing direction of coal gangue
In recent years, coal gangue processing technology has been continuously innovated, and its application areas have become increasingly widespread. The following are the main processing directions of coal gangue:
| Processing direction | Specific use | Market prospects |
|---|---|---|
| Building materials | Brick making, cement blending, roadbed materials | Stable demand, environmental protection policy support |
| Energy Utilization | Power generation, heating | Low cost, but pollution problem needs to be solved |
| Chemical raw materials | Extract alumina and produce aluminum sulfate | High added value, high technical threshold |
| Ecological restoration | Landfill reclamation, soil improvement | Policy support, significant environmental benefits |
3. Popular technologies for coal gangue processing
According to the hot content in the past 10 days, the following technologies have attracted much attention:
1.Coal gangue brick making technology: Through crushing, mixing, forming and sintering, coal gangue is converted into environmentally friendly bricks to reduce clay resource consumption.
2.Coal gangue power generation: Use circulating fluidized bed boilers to generate electricity by burning coal gangue to achieve energy recovery, but attention should be paid to sulfur dioxide and dust emission control.
3.Extract high value-added products: For example, extracting alumina from coal gangue, used in ceramics, refractory materials and other industries, with significant economic benefits.
4. Challenges and Opportunities in Coal Ganggu Processing
Despite the broad prospects for coal gangue processing, there are still some challenges:
| challenge | Solution |
|---|---|
| Environmental pollution | Strengthen exhaust gas treatment and promote clean production technology |
| High technical threshold | Increase investment in R&D and introduce advanced equipment |
| Low market acceptance | Strengthen publicity and promote policy support |
At the same time, with the advancement of the "dual carbon" goal, the coal gangue processing industry ushered in new opportunities. For example, some regions have included the comprehensive utilization of coal gangue in the green industry catalog and enjoyed tax incentives and policy subsidies.
V. Conclusion
Coal gangue is no longer a simple waste, but a potential treasure house of resources. Through technological innovation and policy guidance, the coal gangue processing industry is expected to achieve a win-win situation between economic and environmental benefits. In the future, with the deepening of research, the utilization methods of coal gangue will be further expanded and contribute to sustainable development.
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