Impact of Ore Hardness Variation
The variable hardness of the ore leads to severe wear of wearing parts or over -
crushing. When dealing with
hard parts of the ore, the crusher's wearing parts, such as hammers and liners, are
subject to rapid abrasion.
In contrast, when processing softer ore sections, over - crushing occurs, resulting in
an excessive amount of
fine - grained ore. This situation has a negative impact on the gold recovery rate in
subsequent beneficiation
processes.
Issues with Crushing Ratio and Production Capacity
The insufficient crushing ratio necessitates multiple crushing operations. The existing
crushers are unable to
reduce the large - sized ore obtained from the mine to the desired particle size in a
single pass. As a result,
additional crushing stages are required, complicating the production process and
increasing costs. Moreover,
the production capacity fails to meet the enterprise's requirements. With the expansion
of production scale
and market demand, the current crushers cannot handle the daily ore output during peak
periods, causing
ore accumulation at the crushing station and delaying the production cycle.
Environmental and Safety Hazards
Dust Pollution: The crushing process generates a large amount of dust,
especially when
handling dry ore.
This dust not only poses a threat to the health of operators but also has an explosion
risk under certain
conditions. The dust spreads easily in the open - pit and underground mining areas,
contaminating the
environment and endangering the safety of the entire operation.
Noise Problem: The crushers produce excessive noise during operation,
exceeding the
national industrial
noise emission standards. This high - level noise affects the working environment of
employees and may
also cause disturbances to nearby residents, potentially leading to environmental
complaints and
affecting the normal operation of the enterprise.
Safety Hazards at the Feeding Port and Rotating Parts: The feeding port
lacks effective
protective
devices, and there have been instances of ore bouncing out and injuring workers during
the feeding
process. Additionally, the protection of the rotating parts inside the crusher is
insufficient, creating a risk
of accidental contact and injury to operators.
Maintenance and Management Difficulties
Dependence on Specialized Maintenance and External
Procurement:strong> Maintenance of
the
crushers
relies heavily on specialized technicians. The enterprise's in - house maintenance
staff
often lacks the
necessary skills to handle complex failures. Furthermore, many of the crusher's
spare
parts need to be
procured from outside the region, resulting in long lead times. This situation leads
to
extended downtime
of the equipment, significantly affecting production efficiency.
Lack of Equipment Status Monitoring System: The enterprise lacks a
proper equipment
status
monitoring system, making it impossible to monitor the real - time operation status
of
the crushers. As a
result, potential failures cannot be detected in a timely manner. Usually,
maintenance
is only carried out
when the failure has already caused significant disruptions, leading to increased
maintenance costs and
potential negative impacts on the entire production process.
Coordination Problems among Production Links: Coordination among
different
production
processes
including mining, transportation, crushing, and beneficiation, is poor. For example,
the
mining
department may not adjust the ore mining volume according to the processing capacity
of
the crusher,
resulting in uneven or excessive feeding. Also, changes in the ore particle size
requirements from the
beneficiation department are not promptly communicated to the crushing section,
affecting the efficiency
and product quality of the entire production process.