HC1700 grinding mill is innovative grinding equipment designed by our engineers, who devote great effect to improve the structure and capability of traditional Raymond mill. HC1700 grinding mill is a great choice for large milling projects. It effectively increases the specific duty while reducing the specific consumption of energy. Compare to grinding mill of the same kind (5 R Raymond mill), the capacity of HC1700 grinding mill is about 2.5 times higher. HC1700 grinding mill is a kind of large powder grinding equipment with high production and high efficiency.

Max feeding size (mm): ≤30 mm
Product Fineness: 80-400mesh
Capacity (limestone): 6.5-25(t/h)
Motor of Main Unit: 2×75  or   2×90
Rotation speed of the central axis: 85rpm
Inner diameter of the rings:∮1700mm
Grinding roller diameter *height: 510×250
Overall Dimension: 14m×8m×10m
Total Weight: 46t
Total power: 340kw

Technical Advantages of the Grinding Mill
New Grinding System
a) New technology - vertical pendulum grinding roll installation, which is designed and patented by HongCheng, has been used in HongCheng series grinding mill. Rollers and rings are always in a state of proper balance, making a well-proportioned linearity grinding zone. The height between rollers and rings rises from 160mm to 200mm, and the contact area increases accordingly.
b) With the efficient classifier, the selection of fitness is expanding from 80-325 mesh to 80-800 mesh.
c) Air conveying and end product collection system has been upgraded and renovated. The new system is a high efficiency dust collector, which can collect 99% of the powder.
High Performance
New technology has been used in star rack and vertical pendulum roller devices. The structure becomes more advanced and reasonable. This results in smooth, vibration free operation with low noise levels. 
Efficient and Energy Saving
Compared with the common Raymond grinding mill, HC series grinding mills are much more efficient and energy saving for the output can be increased by 40% while the power can be saved by 30% under the same power conditions.

Structure of Raymond mill
The whole system of HC series grinding mill consists of main unit, classifier, air blower, cyclone separator, feeder, piping device, power- driven machine etc.