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Hosokawa Calculator Hosokawa Calculator

For nearly 100 years, Hosokawa has provided manufacturers with some of the most efficient and dependable powder processing systems. Our massive team of mechanical, chemical and electrical engineers have extensive process experience and knowledge. The Hosokawa Calculator was developed for our customers so they can quickly and accurately make critical calculations vital to system performance and process optimization.

This application includes:

• SCFM to ACFM Conventor
• Tip Speed Calculator
• Nozzle Flow Calculator
• Belt Drive Sizing
• Rotary Airlock Sizing
• Double Flap Valve Spool Sizing
• Mill Outlet Temperature
• Micron to Mesh Conventor

Inputs

Item

• Standard Air Flow
• Static Pressure
• Temperature
• Elevation
• Duct Inner Diameter
• d50 Particle Size
• Material Density

Value

• Standard Air Flow
• Static Pressure
• Temperature
• Elevation
• Duct Inner Diameter
• d50 Particle Size
• Material Density

Units

• SCFM
• Inches of Water
• Deg F
• Ft
• Inches
• Micron
• Lb/Ft3

Results

Items Calculated

• Actual Air Flow
• Duct Flow Velocity
• Terminal Velocity

Value

• Actual Air Flow
• Duct Flow Velocity
• Terminal Velocity

Units

• ACFM
• M3/Hr
• Ft/Min
• M/S
• M/S SCFM refers to “standard cubic feet per minute” or the given flow rate of air at standard room temperature and pressure. Standard air flow is the baseline required flow; depending on your operating conditions (i.e. differing pressure and temperature) this tool allows you to convert the required SCFM, to the actual flow or ACFM that you will read from your instruments.

Inputs

Item

• Rotor Diameter
• Rotor Speed

Value

• Rotor Diameter
• Rotor Speed

Units

• Inches
• RPM

Results

Items Calculated

• Tip Speed

Value

• Tip Speed

Units

• Ft/Min
• M/S Otherwise known as peripheral velocity, this calculator determines the velocity of the impact surface of a hammer at the outer edge of a rotor disk. Tip speed is important because the hammer velocity directly affects how much force is applied to particles being milled. Faster tip speeds general produce smaller particles and can increase material throughput.

Inputs

Item

• Grind Air Pressure
• Nozzle Diameter
• Grind Air Temperature
• Number of Nozzles

Value

• Grind Air Pressure
• Nozzle Diameter
• Grind Air Temperature
• Number of Nozzles

Units

• BARg
• MM
• Deg F
• -

Results

Items Calculated

• Air Flow

Value

• Air Flow

Units

• SCFM
• M3/Hr Used to calculate the amount of air that will pass through the nozzle(s) of a jet mill in SCFM for compressor sizing. Calculating require SCFM for a jet mill is critical to performance. With insufficient air flow, the jet mill cannot achieve optimal results and conversely too much air flow is wasteful and costly to maintain.

Inputs

Item

• Driver Pulley OD
• Driven Pulley OD
• Belt Length
• Driver Shaft Speed
• Driver Face Width
• Driven Face Width

Value

• Driver Pulley OD
• Driven Pulley OD
• Belt Length
• Driver Shaft Speed
• Driver Face Width
• Driven Face Width

Units

• Inches
• Inches
• Inches
• RPM
• Inches
• Inches

Results

Items Calculated

• Center Distance
• Driven Shaft Speed
• RIM Speed
• Driver Dyn Bal Req´d?
• Driven Dyn Bal Req´d?

Value

• Center Distance
• Driven Shaft Speed
• RIM Speed
• Driver Dyn Bal Req´d?
• Driven Dyn Bal Req´d?

Units

• Inches
• RPM
• Ft/Min
• Y/N
• Y/N

*Error, center distance is impossible for selected belt length and/or sheave combination Allows the user to calculate the center distance, driven shaft speed, rim speed and requirement for dynamic balancing of a given belt and pulley arrangement.

Inputs

Item

• Feed Rate
• Material Density
• Expected Rate
• Rotor Diameter
• Cpacity of Rotor

Value

• Feed Rate
• Material Density
• Expected Rate
• Rotor Diameter
• Cpacity of Rotor

Units

• Lb/Hr
• Lb/ft3
• %
• Inches
• Ft3Hr

Results

Items Calculated

• Vol. Feed Rate
• Rot Speed of Rotor
• Tip Speed of Rotor

Value

• Vol. Feed Rate
• Rot Speed of Rotor
• Tip Speed of Rotor

Units

• Ft3/Hr
• RPM
• M/S Helps operators determine the volumetric feed rate and required operating speed of a rotary airlock given the feed rate required, rotor diameter and material characteristics.

Inputs

Item

• Mass Flow
• Material Density
• DFV Spool Diameter
• # of Cycles per Minute
• Fill Factor

Value

• Mass Flow
• Material Density
• DFV Spool Diameter
• # of Cycles per Minute
• Fill Factor

Units

• Lb/Hr
• Lb/ft3
• Inches
• 1/Min
• %

Results

Items Calculated

• Vol Rate
• Min Spool Length
• Mass Flow per Cycle

Value

• Vol Rate
• Min Spool Length
• Mass Flow per Cycle

Units

• Ft3/Hr
• Inches
• Lb A double flap valve is a simple air-lock, the two valves open and close at alternating intervals allowing material to first fill the spool, seal the process area, and then open the other valve to evacuate material out of the bottom. This calculator helps to determine the spool length required for a double flap valve setup given the flap valve sizes and required mass flow rate.

Inputs

Item

• Feed Rate
• Feed Moisture %
• Mill Power Rating
• Specific Heat of Process
• Materials
• Feed Material Inlet Temp
• Mill Inlet Air Flow Rate
• Mill Inlet Air Temp

Value

• Feed Rate
• Feed Moisture %
• Mill Power Rating
• Specific Heat of Process
• Materials
• Feed Material Inlet Temp
• Mill Inlet Air Flow Rate
• Mill Inlet Air Temp

Units

• Lb/Hr
• %
• HP
• BTU/Lb-Deg F
• Deg F
• SCFM
• Deg F

Results

Items Calculated

• Product Moisture Rate
• Mill Inlet Air Density
• Mill Outlet Air Temp

Value

• Product Moisture Rate
• Mill Inlet Air Density
• Mill Outlet Air Temp

Units

• Lb/Hr
• Lb/ft3
• Deg F Helps operators predict the temperature rise in a milling system given their operating conditions. The mill outlet temperature can be important in many processing scenarios, especially where material is sensitive to temperature rise or where heated/chilled air is being used.

Value

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Value