The Respective Characteristic of Two Types of Rod Mill

Rod grinder gets its name because its grinding body inside the barrel is steel bar. Rod grinder, as first-class ore grinding machine, is widely used in the first class grinding in industries such as artificial sand, ore beneficiation plant and power sector in chemical plant. Rod grinder is also called rod mill or grinding rod mill.Rod mill is widely used in industrial sectors and its performance has reached international advanced level. It is one of the most effective, practical and reliable machines for construction. It is an efficient, energy-saving equipment when compared with the traditional ones.There are two types of rod mill,wet type rod mill and dry rod mill.

Wet type rod mill:

A recent application for a trunnion overflow rod mill is in the preparation of coal and petroleum coke slurries for integrated gasification combined cycle electric power generation and co-generation facilities. The relatively coarse open circuit rod mill product, plus the ability to not generate excess fines, is key to making a high percent solids, low viscosity slurry capable of being pumped directly into the gasification reactor vessel. This service has been proven to be an excellent application for the traditional design rod mill.

Dry rod mill:

A new application for the end peripheral discharge rod mill is the preparation of fuel for circulating bed boilers (CFB). It is critical to have a coarse product with the fewest amounts of fines for this product, as the fuel mass must be fluidized by combustion airflow. This same airflow will elutriate excess fines from the fuel mass before combustion is complete and reduce boiler efficiency through loss of the fuel fines with the ash. The very low abrasion characteristics of the rod mill make it an excellent choice when burning highly abrasive coal waste material in CFB’s.

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