lnpe LNIST-45Al User manual

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LNIST-45A Pulverization & Classification System

LNIST-45A Instruction Manual
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Contents
1. Summary of LNIST-45A Pulverization & Classification System ..............................3
1.1 System Introduction............................................................................................3
1.2 System Constitution............................................................................................3
1.3 Main Power Configuration...............................................................................5
1.4 Main Specifications and Characters.................................................................5
2. Main technical parameters and technological process................................................6
2.1 Main Technical Parameters.................................................................................6
2.2 Technological Process.........................................................................................6
3. Installation and Commissioning &SOP......................................................................7
3.1Installation and Commissioning...........................................................................7
3.2 Standard Operating Procedure ............................................................................8
4. Influences on Pulverization & Classification Efficiency..........................................11
4.1 Material Property ..............................................................................................11
4.2 Moisture Content...............................................................................................11
4.3 Loading Weight.................................................................................................11
4.4 Input Particle Size.............................................................................................12
4.5 Input Particle Size Distribution.........................................................................12
4.6 Raw Material Compositions..............................................................................12
5. Equipment Maintenance & Repair............................................................................13
5.1 Maintenance & Repair ......................................................................................13
5.2 How to Replace Classifier Bearings .................................................................14

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6. Familiar Malfunction & Exclusion Methods............................................................16
Enclosure 1 Control Cabinet Operation Instructions....................................................18
1．Overview...........................................................................................................18
2．Constitution.......................................................................................................18
3．Normal Working and Installation Conditions...................................................18
4．Acceptance, Installation, Commissioning.........................................................18
5．Control Principle...............................................................................................19
6．Attention Items：..............................................................................................19
Enclosure 2 Bearing Instructions..................................................................................20
Enclosure 3 User Manual of Blower.............................................................................21
1. Installation...........................................................................................................21
2. Running...............................................................................................................21
3. Familiar Malfunction & Exclusion Methods......................................................21
4. Operation and Maintenance................................................................................22
Enclosure 4 User Manual of High Efficiency Dust Collector ......................................23
1. Installation...........................................................................................................23
2. Operating Maintenance.......................................................................................23
Enclosure 5 System Flowchart......................................................................................26

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Operation specification of LNIST-45A
Pulverization & Classification System
1. Summary of LNIST-45A Pulverization & Classification System
1.1 System Introduction
LNIST-45A pulverization & classification system is an ultrafine powder
production line integrating pulverization, classification and collection. It is also
suitable for the production of ultra-fine powder and spherification of battery cathode
materials such as artificial graphite, natural graphite, petroleum coke, etc. which has
the features of low energy consumption and high yield.
1.2 System Constitution
LNIST-45A pulverization & classification system consists of feeding system,
impact mill, turbine air classifier, cyclone collector, high-efficiency cartridge filter,
blower, discharge system, temperature control system, safe filter and electrical control
system with touchscreen etc.
a. Feeding System
The feeding system consists of raw material bin and screw feeder which realize
continuous feeding of the system. The feeding amount is controlled by adjusting the
motor frequency of the screw feeder.
b. Impact Mill
The impact mill is mainly composed of grinding wheel, hammer head, grinding
track and barrel body. When working, the material between hammer head and grinding
track received strong impact, friction and shear, so as to be crushed.
c. Turbine Air Classifier
The classifier is made up of motor, classification wheel, classification tank.
Which works through adjusting both revolving speed of classification wheel and resize
secondary air. Turbine air classifier achieves precise classification under a reasonable

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solid-gas flow, centrifugal force interacts against air drag accurately classifies raw
material. And revolving speed is controlled by a frequency converter.
d. Cyclone Collector
Thecyclone separator is a kind of equipment used for separating gas solid system.
The working principle is the rotary motion caused by the tangential direction of air
flow, so that solid particles or droplets with larger inertial centrifugal force can be
thrown away from the wall. The main features of cyclone separator are simple
structure, large operation flexibility, high efficiency, convenient management and
maintenance.
e. High-efficient Cartridge Collector
High Efficient Cartridge Collector is made up of housing, filter, electro-magnetic
pulse valve, reducing valve, pulse control meter etc. Filter surface covered with
polyester filtering material makes a high precise filtration, large filtering areas and less
pressure loss. It is mainly used for collecting final product and purifying air.
f. Blower
Blower is the power source of the whole system, which will keep negative
pressure during the operation of the system, so as to realize the flowing of materials
and air flow in the system.
g. Discharge System
The discharge system consists of double pneumatic butterfly valve and product
collect silo.
h. Temperature Control System
The heat exchanger is used to cool the air output from the blower. And the
temperature sensor is used to monitor the air temperature of the system in real-time.
The temperature of the air flow in the system is controlled in a certain range by using
PLC and the cooling system to ensure the safety of the system.
i. Safe Filter
The function of the safe filter is to prevent impurity into mill and to avoid the

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powder stuck, which is equipped with differential pressure display and alarm.
j. Electrical Control System with Touch Screen
Touch screen electronic control system is mainly composed of an electric control
system, touch screen, PLC and other components which could control the equipment
by using a button to automatically start and stop operation, and automatic filling argon,
automatic balancing of the system pressure in the operation process, display the
running state of the equipment online and other functions.
1.3 Main Power Configuration
1.4 Main Specifications and Characters
This pulverization & classification system has following advantages：
☆The finer size of the finished product is smaller than the ordinary mechanical
mill, and the high efficiency turbine classifier is configured to remove the qualified
products after crushing so as to avoid smashing.
☆The wearing parts are wear resistant spray treatment to improve the service life
of the wearing parts.
☆Less vulnerable parts of the system and simple maintenance.
☆Reasonable and uniform flow control can effectively avoid over crushing.
☆The system can produce products with narrow particle size distribution, and
the granularity is easy to adjust.
☆Fully sealed operation，no environment pollution.
Name
Power
Qty/unit
Note
Screw Feeder
0.37kw
1 set
480V/60Hz
Impact Mill
7.5kw
1 set
480V/60Hz
Classifier
1.5kw
1 set
480V/60Hz
Blower
7.5w
1 set
480V/60Hz

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2. Main technical parameters and technological process
2.1 Main Technical Parameters
LNIST-45A
Input Size
2-8mm
Output Size
D50=10μm，D100=40μm
Capacity
10kg/h
Power Supply
480V,60Hz
2.2 Technological Process
Raw Material
Cyclone
Collector
Dust collector
Product 2
Classifier
Impact Mill
Product 1
Coarse Powder

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3. Installation and Commissioning &SOP
3.1Installation and Commissioning
3.1.1 Installation
a. The unit fixing position is generally based on process flowchart and installation
sketch;
b. The elbow should be reduced as far as possible. The specifications and
materials of pipes and valves should meet the requirements of air pressure parameters.;
c. Equipment should be installed horizontally. Connectors between seal case and
pipeline fitting should be very fasten to prevent leakage;
d. Open head cover of collector when installing it and make sure bag layering is
compressed to avoid leakage;
e. Make sure the electrical connecting bolts are tight enough then connect to the
electricity supply with all electrical appliances installed on reliable ground.
3.1.2 Commissioning
a. Electrical control cabinet debugging, power up to check whether the power
supply is missing, the controllers and buttons are normal, the frequency converter
parameters are set, and whether the thermal relay setting of each motor is in the safe
range;
b. Classifier debugging, the frequency of the classifier is gradually increased
from 5Hz to 50Hz, to check whether the rotation direction of the classifier is correct,
whether the classifier current is normal, whether the classifier has abnormal sound,
and whether the bearing temperature of the classifier is normal;
c. When the classifier is opened, the blower is started to check whether the
running direction of the blower is correct (Here marks classifier rotating direction on
the belt cover), whether the current is normal, whether the blower has the abnormal
noise and the bearing temperature of the blower is normal;
d. In the case of the opening of the classifier and the blower, the impact mill is
started to check whether the rotating direction of the smashing host is correct (The
rotation direction of the host is opposite to the classifier), the current is normal (The

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no-load current is about 1/3 of the rated current), whether the bearing has abnormal
noise and the temperature is too high;
e. Control the jet pressure to 0.5～0.7Mpa. Adjust the dust collector pulse
controller, set a suitable time interval and bandwidth.
3.2 Standard Operating Procedure
3.2.1 Preparation Before Starting Up
a. Check whether the impact mill, classifier, pipe and valve are in good condition;
b. Sufficient materials, packaging and testing equipment needed for the
experiment;
c. Close the power main gate, connect the power supply, check whether the
voltage output is normal, and whether the three-phase is average.
3.2.2 Starting Procedure
a. Open the main power supply;
b. Open the total control valve of nitrogen and the total valve of pneumatic valve;
c. Adjust the frequency of the classifier to the required frequency and check the
rotating direction of the classifier to start the classifier. Then start the blower after
stable operation of classifier;
d. Open the impact mill after normal operation of classifier and blower;
e. Open the pulse meter, and the pulse cleaning pressure is adjusted to 0.5Mpa to
0.7Mpa, and the interval of ash clearing is adjusted to 1-2min;
f. Turn on the screw feeder and start feeding.
Pulse valve
Classifier
Main air control valve
Main power
Impact mill
Blower
Screw feeder

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3.2.3 Shutdown Procedure
a. Shutoff the screw feeder;
b. After stopping feeding, run the crushing machine 5-20min, and turn off the
main engine when the main current is around 10-15A;
c. Close the blower after closing the mill 1-2min;
d. Close the classifier while the air volume is very small;
e. The pulse valve is closed after one cycle, and close the pulse injection control
system;
f. Turn off the discharge valve, and the main power supply.
Note ： Shut down the classifier when the negative pressure of the system is very small.
3.2.4 Announcements During Equipment Operating
1. The procedure of opening and closing the machine is strictly carried out; The
whole machine is in a state of negative pressure. If the program is not strictly executed,
the powder is easy to brought into the bearing, and it is destructive to the equipment
and even cannot be repaired;
2. Strictly prohibit any hard impurities such as iron nails in the raw material to
enter the crushing machine, otherwise the hammer head and the crushing track will be
damaged. If a similar impurity is detected, the system should be shut down
immediately, and the internal cavity of the crushing chamber must be cleaned up
before it can be restarted;
3. Observe the current change of the mill and classifier frequency converter. It is
strictly forbidden that the classifier current exceeds the rated current of the motor. If
the current is found to be high, it is necessary to stop feeding or stopping immediately,
Classifier
Air pump
Main power
Blower
Feeder
Pulser
Impact mill