UNION PROCESS: Combination Laboratory Mill
Union Process, Inc. has manufactured a combination laboratory mill that reportedly offers the versatility of two mills in a single footprint. The HD-01/HDDM-01 combination lab attritor enables customers to process both fine and coarse material and/or perform multiple-stage grinding. Using a single motor, frame and set of controls, the customer can mill coarser material using larger grinding media (3-6 mm) at lower agitator shaft speeds (200-650 rpm) using the HD mode. For submicron and nanometer-range target particle sizes, the mill can be operated in HDDM mode, which utilizes smaller grinding media (0.25-2 mm) and higher agitator shaft speeds (1,500-3,000 rpm).
According to the company, switching between HD and HDDM mode is easily accomplished by releasing the hinged belt guard (equipped with quick disconnects), moving the drive belt to the appropriate set of pulleys, and resecuring the belt guard. The coupling, agitator shaft, and cover can also be changed depending on which mode the attritor is being operated in.
The combination mill is available with a choice of two drive systems—the electronic variable frequency drive (explosion-proof or non-explosion-proof) or the mechanical variable speed drive (explosion-proof). The HD-01/HDDM-01 combination lab attritor can be configured with metal-free contact parts when necessary and is compatible with the full line of HD-01 and HDDM-01 interchangeable parts and accessories to maximize versatility.
“This unique design is a cost-effective solution for customers looking for the ultimate in versatility for a lab mill,” said Emery Li, sales manager. “The HD-01/HDDM-01 attritor, when configured appropriately, can be used for dry milling, wet milling, milling under inert atmosphere and even cryogenic milling. It truly is one of the most versatile mills in our product offering, when you consider the various milling modes, options and available accessories."