Magnesium oxide dry granulation machine 2000kg/h

Magnesium oxide dry granulation machine 2000kg/h

Magnesium oxide dry granulation machine is a dry physical granulation equipment designed specifically for magnesium oxide powder. This equipment adopts advanced roll extrusion molding technology, which directly converts fine powdered magnesium oxide into high-strength and high-purity granular products through the principle of physical compression. The equipment has the characteristics of fully enclosed operation, no added binder, no dust pollution, energy saving and high efficiency, and is particularly suitable for the granulation production of high-purity magnesium oxide.

Main technical parameters

Parameter project specification range

Processing capacity of 200-2000 kg/h (depending on model)

Finished product particle size 0.5-10 mm (adjustable)

Particle strength ≥ 20 N/particle (adjustable)

Motor power 15-75 kW (main motor)

Equipment dimensions: length 3.5-8 m, width 1.5-2.5 m, height 2.5-3.5 m

Power requirement 380V/50Hz (three-phase four wire)

Compressed air 0.6-0.8 MPa, ≥ 1 m ³/min

Equipment composition structure

1. Material supply system

Dust free feeding station: adopting negative pressure dust collection design, equipped with silicone sealing curtain at the feeding port

Transfer material bin: made of 304 stainless steel, with a capacity of 1-5 m ³ (optional)

Material level monitoring: high-precision radar level gauge, real-time monitoring of material level

Proportional mixing device: Double helix mixing blade, ensuring uniform mixing of new powder and recycled fine powder

2. Material conveying system

Vacuum feeding machine: fully automatic vacuum conveying, with a conveying distance of up to 20 meters

Feeding auger: variable frequency speed regulation, precise control of feeding speed

Forced feeder: Double screw forced feeding, equipped with degassing device

3. Core granulation system

Roll type granulation extruder:

Roller material: high-strength alloy steel, surface hard alloy coating

Roller diameter: 300-600 mm (depending on model)

Roller pattern: diamond, groove or smooth surface (optional)

Pressure regulation: hydraulic system, pressure range 10-50 MPa

Gap adjustment: precision screw adjustment, accuracy ± 0.05 mm

Crushing and granulation system:

Cutting blade set: Multi blade rotating cutting, adjustable speed

Whole grain knife set: parallel arrangement of two axes, particle shaping

Blade material: hard alloy, wear-resistant and corrosion-resistant

4. Screening and recycling system

Multi layer vibrating screen: Three layer screen design (coarse, medium, fine)

Screening efficiency: ≥ 95%

Recycling pipeline: fully enclosed pneumatic conveying

Control system: Automatic diversion of non-conforming materials

working principle

1. Material preparation stage

Magnesium oxide powder and recycled fine powder are mixed in a predetermined ratio in a transfer bin, and uniformity is ensured through a stirring device.

2. Extrusion molding stage

The mixture is uniformly fed into the roller extrusion zone through a forced feeder. Under high pressure (20-40 MPa), the molecular forces between powder particles are enhanced, forming dense sheet-like materials through van der Waals forces and mechanical meshing.

3. Crushing and granulation stage

The sheet material formed by extrusion is crushed into primary particles by a rotating cutting blade group, and then enters the whole particle blade group for secondary shaping to obtain particles with regular shape and uniform particle size.

4. Screening and recycling stage

The whole particles are classified by vibrating screen:

Upper layer: Large particles (>upper limit) → Return to cutting process

Middle level: Qualified products (0.5-10 mm) → Collection of finished products

Lower layer: Fine powder (<lower limit) → Return to the mixing bin

Equipment features and advantages

1. Technical advantages

Pure physical granulation without adding any binder or moisture, maintaining the purity of magnesium oxide

Closed loop design: automatic recycling of non-conforming materials, material utilization rate>98%

Accurate and controllable granularity: By adjusting the roller pressure and cutting speed, precise granularity control can be achieved

High strength particles: The compressive strength of particles can reach 20-50 N/particle

2. Environmental Protection and Safety

Fully enclosed operation: no dust leakage during the production process, meeting GMP cleanliness requirements

Low noise design: Equipment noise<75 dB (A)

Safety protection: emergency stop button, protective cover interlock device

3. Energy saving and efficient

Low energy consumption: more than 40% energy-saving compared to wet granulation

Continuous production: 24-hour uninterrupted operation capability

Easy to maintain: modular design, quick replacement of key components

4. Intelligent control

PLC automatic control system: touch screen operation interface

Parameter memory function: can store multiple product formulas

Fault self diagnosis: Real time monitoring of equipment operation status

Data recording: automatic recording and storage of production data

Application field

Refractory materials industry: producing magnesium oxide particles for magnesia carbon bricks and magnesia calcium bricks

Chemical industry: preparation of catalyst carriers and desulfurizer particles

Environmental protection industry: Magnesium oxide adsorbent particles for flue gas treatment

Agricultural industry: slow-release fertilizer additive granules

Medical food: high-purity medical magnesium oxide particles

Installation and maintenance

Installation requirements

Basic load-bearing capacity: ≥ 1.5 times the weight of the equipment

Environmental temperature: 5-40 ℃

Relative humidity:<80%

Ventilation requirement: Ensure good heat dissipation of the equipment