Excavating tunnels often yields a significant amount of soil and ore. If not managed properly, it can harm the ecological environment. So, how is the ore extracted from tunnels processed? Let's discuss the methods for processing tunnel-excavated ore.
The processing methods for ore extracted from tunnels mainly include crushing, screening, ore washing, flotation, magnetic separation, gravity separation, and other physical or chemical beneficiation methods. The specific processing procedures and methods depend on the type, grade, and ultimate use of the ore.
1、Crushing:
Use jaw crushers, cone crushers, hammer crushers, etc., to crush large pieces of ore into smaller ones for subsequent processing.
2、Screening:
Use vibrating screens or trommel screens to grade ores of different particle sizes, separating out the ore particles that meet the requirements.
3、Ore Washing:
Use water flow to wash the ore, removing soil, dust, and other impurities to improve the ore grade.
4、Flotation:
Use flotation machines and flotation reagents to make valuable metal particles adhere to bubbles and float, while other waste sinks to the bottom of the water, thereby recovering valuable metals.
5、Magnetic Separation:
For ores containing magnetic minerals, magnetic separators can be used to separate them.
6、Gravity Separation:
For ores with a higher specific gravity, gravity separation equipment such as jigging machines can be used for separation.
7、Smelting:
For metal ores such as copper, iron, gold, and silver, after beneficiation, they can be sent to smelters for melting to extract pure metals.
8、Comprehensive Utilization:
For complex ores containing multiple valuable metals, a combination of various processing methods can be employed for comprehensive utilization to improve resource recovery rates.
Processing ore excavated from tunnels is a complex process that requires consideration of factors such as ore properties, technical conditions, and environmental impacts to ensure efficient, safe, and environmentally friendly processing.