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Air Slides

Mini Plant Training Material

Air Slides

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Air Slides

12/09/2013Field Operator Certification 2

Lesson Objectives

1. State the purpose for Air Slides

2. Name the main components of an Air Slide

3. Explain the principle of operation of an Air Slide

4. State the applications for Air Slides in cementmanufacturing

5. Describe running & static inspections for Air Slides

6. Describe troubleshooting procedures for Air Slides

7. State safety concerns related to Air Slides8. Perform a running & specific inspection on an Air Slide

(OJT)

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Air Slides

12/09/2013Field Operator Certification 3

Objective 1 - Purpose

Pneumatic conveying

system

Designed to movepowdered materials

from one location &

elevation to another

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Air Slides

12/09/2013Field Operator Certification 4

Objective 2 - Components

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12/09/2013Field Operator Certification 5

Components (contd)

Material Inlet

Material Discharge

Clean Air Chamber

Material Chamber

Canvas

Air Slide Fan or blower

Air Delivery Manifold

Airflow Control Valves

Air Slide Ventilation

Auxiliary Components

Material Flow Control

GatesMaterial Grizzlies

Materials Traps

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12/09/2013Field Operator Certification 6

Objective 3 - Principle of Operation

2 main sections Top section through which

material flows

Bottom section through whichair is introduced

Sections firmly boltedtogether & divided by alayer of canvas

Exterior Air Slides haveoverhung lip to preventwater from infiltrating thecanvas

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Air Slides

12/09/2013Field Operator Certification 7

Principle of Operation (contd)

Wire mesh typically

installed on top side of

the Air Slide canvas

at impact points

other areas of high wear

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Air Slides

12/09/2013Field Operator Certification 8

Principle of Operation (contd)

Fluidizing air supplied

at 15 20 inches of

water positive pressure

Blower or fan is

typically equipped with

a filter to ensure only

clean air is provided

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Air Slides

12/09/2013Field Operator Certification 9

Principle of Operation (contd)

Control valves on

Blower exhaust

Air Slide sections

Allows for optimization

of airflow distribution

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Air Slides

12/09/2013Field Operator Certification 10

Principle of Operation (contd)

Airflow created by fan is

forced evenly through

canvas fluidizing or

reducing the friction

between material particles

Positioned on an angle of

7 to 12

causes fluidized material toflow from inlet to outlet due to

gravity

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Air Slides

12/09/2013Field Operator Certification 11

Principle of Operation (contd)

For materials to be

continually fluidized airflow

into & out must be

maintained

As a result, Dust Collectors

or other means of

ventilation are critical to

proper operation

Should operate underslightly negative conditions

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Air Slides

12/09/2013Field Operator Certification 12

Air slide direction change

Direction can be change to

two or more directions

For example where you

have to fill more than one

silo from a mill

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Air Slides

12/09/2013Field Operator Certification 13

Air Slide Assembly

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Air Slides

12/09/2013Field Operator Certification 14

Air Slide Maintenance

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Air Slides

12/09/2013Field Operator Certification 15

Air Slide Maintenance (contd)

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12/09/2013Field Operator Certification 16

Objective 5 - Applications

Raw Grinding

Pryoprocessing

Finish Grinding

Bulk Storage

Bulk Loading

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Air Slides

12/09/2013Field Operator Certification 17

Objective 6 - Inspections

Running Inspection

Specific Inspection

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Objective 7 - Troubleshooting

Air Delivery System

Air Slide Structure

Ventilation System

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Objective 8 - Safety

Always lock out fan or blower prior to performing any service

Surface & material temps may be extremely hot

Equipment is controlled automatically & can start/ stop atany time

Keep clothing, fingers, hair, etc. away from fan or blowerdrive component

Inspect all guards for damage & support integrity regularly

Know location & function of all control stations

Keep all control stations free from obstructions to ensureaccess at all times

Report all unsafe conditions or practices immediately

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12/09/2013Field Operator Certification 20

Lesson Review

State the purpose of an Air Slide

Moves material from one location to another

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12/09/2013Field Operator Certification 21

Lesson Review

Describe 5 components of an Air Slide

Material inlet

Material discharge

Clean air chamber

Material chamber

Canvas

Air Slide fan or blower

Air delivery manifoldAirflow control valves

Air Slide ventilation

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12/09/2013Field Operator Certification 22

Lesson Review

What is the purpose of the wire mesh installed on

top of the Air Slide canvas in some applications?

It increases wear resistance

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12/09/2013Field Operator Certification 23

Lesson Review

Describe the 2 main components of an Air Slides

principle of operation

Air used to fluidize material which reduces frictionbetween particles

Once fluidized, material flows from the inlet to the outletby the force of gravity

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Lesson Review

How does venting affect the operation of the Air

Slide?

It is essential to maintain airflow through the material inorder to promote fluidization

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Lesson Review

State 2 applications for Air Slides in cement

manufacturing

Raw Grinding

Pyroprocessing

Finish Grinding

Bulk Loading

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Air Slides

12/09/2013Field Operator Certification 26

Lesson Review

Describe 5 inspection points specific to an Air Slide

As per Inspection information

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Lesson Review

Describe 3 possible conditions that could result in a

loss of material flow in an Air Slide

As per Troubleshooting information

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Air Slides

/ /O C f

Lesson Review

Describe 2 safety hazards associated with Air

Slides

As per Safety information