Apart from the quality of briquette machines, there are three factors which would affect the briquetting process--the moisture content of raw materials, the propeller and the proper temperature for briquetting. The post is going to talk about the three factors in detail.
1.The moisture content of raw materials: The briquette machine has high standard to the moisture content of raw materials. Generally, the required moisture content is about 5-12%. If the moisture content is below 5%, the material has bad adhesive ability and is difficult to convert, the finished products would be loose and not strong enough; if the moisture content is over 12%, the briquette is soft with low density.
In general, moisture content of fresh material is about 50%, it needs to be dried by the drying machine for 1-2 times. If the material can be dried under sunshine for 1-2 days, then the time for drying can be reduced to 1time. All in all, the material for briquette should be dried for at least one time.
2.Propeller: The finished product is qualified or not is decided by the quality of propeller. The propeller is a quick wearing parts, the top of it is rotating in fast speed and has friction force with the material, so it is easy to wear significantly. When the angle of surface is small or the surface become not smooth with spots, the finished products are low in quality or even without discharging. At this time, the machine should be repaired according to the instruction of engineers, so the machine can be up to the standard.
3.The working temperature of briquette machine: Temperature of cylinder of formation should be controlled at about 260-320 degree. The temperature depends on the material. At first, we should know that increasing the temperature is to soften the lignin in the wood to increase the stickiness, which are beneficial to the compression. If the temperature is high, the material is soft too much, the discharging speed is too fast, but the briquette is not strong enough. If the temperature is low, then the material has low stickiness, the briquette is not strong with cracks. So we have to master the proper temperature of briquetting through repeated tests.
In general, the bamboo material has low temperature, it is proper to keep them at 260-280 degree. The temperature for sawdust is about 280-300 degree properly, and the straw or husk is about 300-320 degree. Of course, the temperature should be considered about the real moisture content of material. Even for the same material, the temperature for briquette is different. In addition, the surface color of briquette can not too deep, brownish black is ok.
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KMEC is one of the earliest and largest biomass briquette press manufacturer that provide our customers with qualified products, competitive biomass briquette price and superior service. If you need biomass briquetting press, please feel free to contact us.
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