overview

The GZL series dry rolling granulator adopts dry extrusion technology to compress powdered materials with a moisture content of less than 10% into pieces, and then goes through crushing, granulation, and screening processes to turn the block shaped materials into granular materials that meet the requirements for use.

Dry rolling granulation mainly relies on external pressure to force the material through the gap between two opposing rotating rollers, compressing it into sheets. During the rolling process, the actual density of the material can increase by 1.5-3 times, thereby achieving a certain strength requirement.

characteristic

The material is mechanically compressed and formed without the addition of any wetting agent, ensuring the purity of the product.

Directly producing dry powder without the need for subsequent drying processes is more conducive to the connection and transformation of existing production processes.

The particle strength is high, and the increase in bulk density is more significant than other granulation methods. Especially suitable for increasing the density of product stacking.

It can control environmental pollution, reduce powder waste and packaging costs, and improve product transportation capacity.

Compact structure, easy maintenance, simple operation, short process flow, low energy consumption, high efficiency, low failure rate, suitable for a wide range of raw materials, and roller pressure can be freely adjusted according to different materials.

The feeding and feeding device adopts variable frequency stepless adjustment control, with high degree of automation, capable of controlling multiple machines by one person, low labor intensity, and long-term continuous operation.

The main transmission components are made of high-quality alloy materials, stainless steel materials, titanium materials, chromium and other surface alloys, greatly improving wear resistance, corrosion resistance, high temperature resistance and pressure resistance, making the machine have a longer service life.

Working principle

Various dry powder materials are added from the top of the equipment, and after degassing and spiral preloading, they enter two equal rolling rolls. The rolling rolls rotate relative to each other, and the material is forced into the gap between the two rolls. The rolling rolls bite the material into the gap and compress it. After passing through the compression zone, the surface tension and gravity of the material naturally release it. The detached finger shaped agglomerates enter the crusher and are crushed by a rotating blade. The crushed material enters the granulator and is sieved by a rotary vibrating screen through a rolling blade. Qualified products are transported to the finished product warehouse through a conveyor. Powder: The screened material is sent back to the raw material warehouse through a conveyor for secondary rolling, and the squeezing force can be adjusted by the pressure of the hydraulic cylinder according to the needs of the granulation operation.

By changing the groove form of the roller surface, sheet, strip, and flattened spherical materials can be obtained.

application

Petrochemical, fine chemical, pharmaceutical, food, metal powder, biotechnology, pesticide, fertilizer, mineral, coal

technological process

The raw materials enter the bucket elevator through the feeding port and the screw conveyor. The bucket elevator sends the raw material powder into the vibrating raw material bin, and the material is sent to the variable frequency screw feeder through the quantitative feeding machine for pre compression. The pre compressed material is pressed into the middle of two pairs of relatively rotating pressure rollers for compaction. The pressing force is transmitted to the material through the pushing force of the oil cylinder by the pressure rollers. The compacted sheet material automatically enters the crusher and is crushed into unevenly sized particles, which then enter the granulator for trimming. The trimmed particles are squeezed out through a sieve plate with mesh holes and enter the screening machine. The finished particles are sieved and then sent to the finished product warehouse through a bucket elevator. The screened powdered material is returned to the raw material bin through a screw conveyor and compacted again to complete a closed cycle.

Technical Parameter

Project/Parameters/Model	GZL-240	GZL-360	GZL-450
Roll diameter mm	Φ240	Φ360	Φ450
The effective bandwidth of the rolling mill is mm	80-160	180-500	220-1000
Roll speed rpm	15,20,26,32	14,18,24,30	10-25
Forming pressure Mpa	120	160	210
Maximum thickness of rolled sheet mm	4	8	8
Rolling yield kg/h	200-500	500-3000	800-5000
Finished product particle size mm	0.5-6	0.5-8	0.5-6
Finished product output kg/h	160-400	400-2400	680-4000
Host power kw	7.5	22-37	45
Total installed capacity kw	20	50	80
Dimensions (LxWxH) mm	1500x1300x5000	2000x2000x9000	2500x2500x10000
Weight t	6	10	13