5T/8T/12T/14T/24T Lead Oxide Mill
- All Components and Its Function
The 14T Oxide Mill can automatically finish the lead balls preparation (lead ingot conveyor, lead melting furnace, lead car caster, lead balls cutter, lead balls lifter, lead balls storage silo), lead oxide manufacturing (positive pressure air supply system, ball mill, feeding airlock, bag house, negative pressure air supply system), lead oxide storage and transmission (screw conveyor, bucket elevator, lead oxide storage silo), and other functions, equipment adopts PLC + human machine interface as centralized control, flow operation and automatic production.
Floor area: about 18 m (L) x7.5 m (W) x10 m (H), as per the final drawing
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- Lead Balls Production System
1.1.1 Lead Ingot Conveyor
A. Power consumption: Lead Ingot Conveyor= Power: 0.55kW, lead ingot feeding mechanism = 0.37KW
B. Weight:
Lead ingot conveyor = 430Kg
Dimension (L*W*H)= 2128*846*1209mm (to load about 15pcs lead ingot)
Lead ingot feeding mechanism = 124Kg
Dimension (L*W*H)= 1110*364*1205mm
- Quantity: 1pc
- Function: the lead ingot conveyor mainly used to store and convey the lead ingots, the lead ingot weight is about 48±2Kg. The travel switch will automatically control the process between the lead ingot conveyor and the lead ingot feeding mechanism, the lead ingot feeding mechanism is used to convey the lead ingot into the lead furnace by minimum cross section.
1.1.2 Lead Melting Furnace
A. Melting lead furnace volume: 900*1048*550mm: about 5 tons of molten lead;
B. weight: 810Kg, quantity: 1pc
C. Overall dimensions (L*W*H): 1382*1232*1683mm;
D. Lead liquid temperature: 360 ~ 450 ºC, adjustable, working range±10 ºC, controlled at 400 ºC.
E. The highest working temperature is 450 ºC, insulation layer material is≥0.2m3;
F. Electric heating tube is used in the furnace, maximum power: 60Kw, working power: 40Kw;
G. The amount of lead added in the furnace shall not exceed 50Kg at a time, otherwise the temperature of lead liquid will be greatly reduced;
1.1.3 Lead Bar Caster
A. Dimension: φ1260 (diameter)* 1160 (height);
B. Weight: 545Kg, quantity: 1pc
C. The cooling mold body adopts casting mold material;
D. Indie the cooling mold body, it adopts cooling water as circulation cooling, cooling water temperature is < 25 ºC.
E. Function: it is mainly used for the transition connection between the electric hot melting lead furnace and the lead balls cutting machine, so as to make the lead liquid become lead bar, so that the cutting machine can cut the even weight and quantity of lead.
1.1.4 Lead Balls Cutter
A. power consumption: 4.55kw
B. weight: 668Kg, quantity: 1pc
C. Overall dimension (L*W*H): 1000* 812*1052mm
D. Function: cut lead bars into lead balls with average weight and quantity, the weight range is 80~120g;
E. Working speed: 235r/min; Cutting capacity: 1400kg/h;
F. At the entrance there is photoelectric switch sensor, to detect whether the lead bar is broken.
1.1.5 Lead Balls Lifter
A. Power consumption: 0.75kw.
B. Weight: 285Kg, quantity: 1pc.
C. The nominal height of the inlet and outlet of the lead balls lifter is: 5200mm
1.1.6 Lead Balls Silo
A. Power consumption: 0.75kw.
B. Overall dimension: 1,800 (diameter) * 5100 (height);
C. Weight: 2077Kg, quantity: 1 set
D. Lead balls storage capacity: 40,000Kg
E. Function: store lead, and release lead uniformly from the silo, and adjust its speed according to the feeding speed of ball mill.
1.2 Lead Oxide Production System
1.2.1 Ball Mill
A. Power consumption: 76Kw
B. Overall dimension (L*W*H): 6115*3254*2459mm;
C. Weight: 10.2 ton; Quantity: 1 set;
D. Drum speed: 29.6r/min;
Diameter of the main machine: φ1560* 2570mm
Production capacity: 12 Ton/day;
Allowable lead balls loaded: 4~ 4.5 ton;
Compressed air consumption: air supply pressure ≥0.6mpa
Consumption: about 2m3/min
Cooling water consumption: pressure ≥0.2mpa, Consumption ≤4m3/d
Quality of lead powder: oxidation degree 68%~80%,
apparent density 1.2 ~ 1.5 g/cm3
E. The roller is made of manganese steel with good abrasion resistance, low iron content, and the roundness of the roll is controlled within 2mm;
F. After assembly, the main shaft of the ball mill shall be processed simultaneously to ensure its coaxiality; main shaft adopts rolling bearing, with smooth running, low power consumption and convenient maintenance;
G. The reducer can rotate flexibly and work in a balanced way without any special noise. The lubricating oil should be changed regularly.
H. The ball mill adopts sprocket drive, the drive is stable; Centralized oil supply by lubricating oil pump to ensure good lubrication and cooling effect;
I. This system is equipped with a water cooling system to control the temperature of the oxide mill. The time and interval time for each water spraying can be adjusted. The ball mill adopts three-point monitoring temperature inside the drum, the control is based on three different position's monitoring temperature, when one-point or several-point temperature is higher than set value, the control system will automatically spray water as cooling for the corresponding position, and automatically control the water spraying time, make the ball mill drum temperature is more stable and ensure the precision of temperature control is ±1.5 ºC;
J. The oxide outlet at the end of the ball mill is a vertical lifting section, with reverse screw, which improves the operability of reducing the apparent density of lead oxide.
K. Air supply adjusting system: equipped with eye-catching angle marker and convenient operation of the duct diversion mechanism, make the operation more convenient, angle is controlled in 38°.
1.2.2 Positive Pressure Air Feed System
A. Power consumption: 22Kw
B. Overall dimension (L*W*H): 1530*912*975mm
C. Weight: 536Kg, quantity: 1 set
D. Air volume: 3000m3/h, outlet air pressure: 15000 Pa
E. Function: lead particles are fed into the ball mill, as the lead particles will collide with each other in the body, the energy can make the temperature rise, after a period of time, as more lead particles are fed into the ball mill, temperature and current value will continue to rise, when the temperature reaches 140 ºC (284 ° F), then the power of positive pressure pneumatic conveying system can be started. The extent to which the damper is opened is determined by the required degree of oxidation and production capacity, which can be adjusted. At the same time, the production capacity and oxidation degree of lead oxide can also be determined by calculating the air volume from the reading value of the differential pressure meter.
1.2.3 Vertical bag house
A. Overall dimensions (L*W*H): 4537*3900*7633mm.
B. Weight: 5282Kg, quantity: 1 set.
C. Filtration area: 120m2
D. Number of filter bags: 100pcs
E. Specification of filter bag: φ150 *2500
F. Air volume: 10800~20800m3/h
G. Dust removal efficiency: 99~99.5%
H. Filtration wind speed: 2~4m/min
I. Compressed air consumption: 0.42~1.68m3/min
J. Function: the pulsed bag filter is completely automatic and self-cleaning. There are no moving parts inside. All lead dust deposited on the bag is periodically cleaned using a time controller that creates an instantaneous jet of high-pressure air over a specially designed venturi tube over a filter area that is simultaneously cleaned by a device. Moreover, lead dust is continuously discharged from the collector bottom.
1.2.4 Negative Pressure Air Feed System
A. Power consumption: 15Kw
B. Overall dimension (L*W*H): 893*760*1000mm
C. Weight: 230Kg, quantity: 1 set
D. Air pressure: 5553Pa Quantity: 5941 m3/h
E. Usually, the negative pressure air feed system is at a fixed speed. In a special design, the negative pressure air feed system will automatically adjust its speed according to the static pressure at the outlet of the oxide mill. In most normal working hours, the operator only needs to maintain a fixed opening of the damper and does not need to adjust it frequently.
1.2.5 Feed airlock
A. Overall dimension (L*W*H): 728*400* 474mm
B. weight: 20Kg, quantity: 1pc
C. Its function is to ensure no air leakage when feeding materials into the ball mill
1.3 Lead Oxide Transmission System
1.3.1 Screw Conveyor
A. Power consumption: according to process design requirements
B. Overall dimension: process length* 300 (width) *430 (height)
C. Quantity: according to process design requirements
D. Transmission capacity: 9m3/h
E. Function: used for conveying lead oxide in pulsed bag filter to bucket elevator; Conveying the lead oxide from the bucket elevator to the lead oxide storage silo; The lead oxide in the storage silo is transported to the bucket elevator, and the lead oxide in the bucket elevator is transported to the paste mixer.
F. Good tightness and easy to clean.
1.3.2 Bucket Elevator
A. Power consumption: according to process design requirements
B. Overall dimension: 1250 (length)* 880 (width)* process height
C. Quantity: according to process design requirements
D. Transmission capacity: 9m3/h
E. Function: used for lifting lead oxide from pulsed cloth bag filter to lead oxide storage silo; Lift from lead oxide storage silo to paste mixer.
1.3.3 Lead Oxide Storage Silo
A. Power consumption: 1.1kw.
B. Capacity: 40T, quantity: 2pcs
C. Overall Dimension: φ2320 (wide) *6860 (high)
D. Function: store the lead oxide for natural aging to meet the requirements of subsequent process.
1.4 Electronic Control System
1.4.1 Electrical control cabinet for lead oxide production line
A. Overall dimension (L*W*H): 1200*500*1850mm
B. Weight: 300Kg, quantity: 1pct
1.4.2 Electrical control cabinet for Lead oxide storage and transportation system
A. Overall dimension (L*W*H): 650*400*1850mm
B. Weight: 80Kg, quantity: 1pc
1.4.3 Electrical control cabinet for lead balls manufacturing system
A. Overall dimension (L*W*H): 700*400*1300mm
B. Weight: 50Kg, quantity: 1pc
- Water, air and power connected by the user
2.1 Cooling water:
A. inlet: G(1/2) " is used for cooling water pipe of ball mill
B. Inlet and outlet: G1 " is used for the lead bar caster
C. pressure: tap water at ambient pressure (0.2mpa ~ 0.4mpa)
D. Usage: 20m3/day
2.2 Electricity
A. total power: 180Kw
B. AC 440V, 60HZ, three-phase four-wire system
2.3 Compressed Air
A. pressure: 0.6mpa
B. Usage: about 1.9m3/min
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