The double roll crusher is a specialized equipment for the fine crushing
process in large-scale quartz sand production lines (with a daily processing
capacity of ≥ 3000t). With its controllable crushing ratio and low over crushing
capacity, it is widely used in the crushing operation of 0.5-3mm high-precision
quartz sand, directly determining the uniformity of the finished sand particle
size and the adaptability to high-end markets. Many newly put into operation
quartz sand enterprises often experience problems such as rapid roller wear,
uneven discharge, and frequent equipment failures due to improper equipment
selection and operation, which affect the continuous operation of the production
line.
As a technology-based enterprise that has been deeply involved in the
research and development, manufacturing, and service of quartz sand equipment
for more than ten years, Shanlu Heavy Industry has a standardized production
base and a professional technical service team. Combining the on-site service
experience of hundreds of production lines, it has compiled three high-frequency
stepping points and compliance optimization solutions for double roll crushers
to help enterprises avoid risks and stabilize production.
Avoiding pitfall point one: Choosing the wrong material for the roller skin
can cause wear and tear at a much faster rate than expected
Many beginners choose ordinary manganese steel roller skins to control
initial costs. However, when faced with high hardness quartz sand of Mohs 7
grade, the wear resistance is insufficient and the service life is often less
than 3 months. Compliance optimization plan: Priority should be given to using
high chromium alloy composite roller skins, with the working layer hardness
controlled at HRC58-62, balancing impact toughness and wear resistance. The
service life can reach 2-3 times that of ordinary manganese steel roller skins;
Regularly flip the roller skin during the production process to balance the wear
of the roller surface and extend the replacement cycle. Shanlu Heavy Industry
can provide customized wear-resistant roller skin spare parts that meet industry
standards, suitable for different specifications of double roll crushers.
Avoidance Point 2: Large fluctuations in discharge particle size and low
qualification rate of finished products
The core cause of this problem is inaccurate adjustment of the roller gap and
uneven feeding of the fabric, which often leads to a particle size deviation of
over 10% in the finished product, making it unable to meet the production
requirements of high-end quartz sand for photovoltaics and glass. Optimization
plan: Equipped with a digital hydraulic roll gap adjustment device, the roll gap
can be accurately controlled within the range of 0.5-3mm with a deviation of ≤
0.1mm. A variable frequency vibration feeder is installed at the feeding end to
evenly distribute the material along the width of the roll surface, while
stabilizing the feeding amount at 85% -90% of the equipment's rated value to
avoid particle size fluctuations caused by local overload. Shanlu Heavy Industry
can provide on-site parameter calibration and structural optimization services
to assist enterprises in stabilizing the particle size qualification rate of
finished products at over 95%.
Avoiding pitfall point three: Neglecting daily inspections, small problems
can lead to major malfunctions
Many beginners do not conduct standardized inspections before starting up,
resulting in loose anchor bolts and excessive bearing temperature, and still
forcibly operating, ultimately leading to equipment damage and long-term
shutdown. Compliance operation and maintenance plan: Establish a standardized
start-up inspection process, check the tightening of foundation bolts and the
wear status of roller surfaces before daily start-up; Select high-temperature
anti-wear lubricating grease, replenish lubricating grease to the bearing every
500 working hours, and strictly control the operating temperature of the bearing
not to exceed 70 ℃; Equipped with a bearing temperature warning device, it
automatically triggers shutdown protection in case of abnormalities. Shanlu
Heavy Industry can provide specialized operation and maintenance training to
assist enterprises in standardizing the entire process operation.
Shanlu Heavy Industry has always adhered to the concept of compliant
operation, and all equipment and optimization solutions comply with industry
safety and environmental standards. We can provide full process services from
double roll crusher selection, customized transformation to after-sales
operation and maintenance. We have served dozens of quartz sand production
enterprises across the country and have gained widespread recognition. If your
production line is facing issues related to double roll crushers, or if you have
equipment selection, optimization, and renovation needs, please feel free to
contact Manager Zhang at 13583776655 or WeChat. Shanlu Heavy Industry's
professional team will provide one-on-one communication and practical
solutions.