The working principle of the briquetting machine is to compress the mixed powdery materials that are not easy to form into briquettes to improve the utilization rate of the materials, so as to achieve energy saving, environmental protection and easy transportation. However, in the actual operation process, some customers may have unsatisfactory conditions, such as the briquettess pressed by coal briquettes press machine are not strong enough, or there are burrs and virtual briquettess, then what are the reasons for these problems? Woolen cloth?
- Feeding Quantity Amount
If the feeding amount is insufficient, there will be burrs, virtual briquettes, or insufficient strength of the briquettes after molding. In general, the larger the feed amount, the smaller the pellet size and the lower the strength. It is recommended that you use quantitative feeding. If the feeding is less than the production capacity of the host, the result of the briquettes will not be very good, and the strength of the briquettes will also be poor. When the amount of feed exceeds the amount of finished products produced by the main engine, it will cause the main engine to be overloaded, and even force the main engine to stop. The equipment point adopts a fixed feeding method. - Adhesive
The binder has good fluidity and strong affinity, which can increase the force between particles. Too little binder will result in poor cohesion between particles, resulting in virtual spheres or insufficient sphere strength. It is recommended that you add a suitable binder according to the material situation. - Materiality
If the moisture content of the material is too low, the material spheres pressed by the briquetting machine are prone to cracks; if the moisture content of the material is too high, the material spheres pressed by the briquetting machine are soft in texture and cannot meet the hardness requirements of the finished product. At the same time, too many impurities in the material directly affect the originality of the material. Impurities with high hardness and large particle size will also be unfavorable for pressing the fruit. It is recommended that you decide whether to add pre-screening according to the condition of the material before pressing. Process to reduce impurities in the material and do a good job of water treatment.
4. Line Pressure
For different materials, the line specific pressure required for forming is different. If the pressure is too small, the strength of the extruded briquettes is easy to be insufficient. The briquettes press is composed of two pressure rollers, and the powder entering the bite angle of the two pressure rollers is extruded and formed. Among them, the two pressure rollers are approximately tangent, and the pressure on the material on the contact line is relatively large, so the total pressure on the contact line is the total pressure of the equipment. The ratio of the total pressure to the width of the roller is the line specific pressure value. It is recommended that you choose a briquettes press that suits you when purchasing a briquettes press, so as to avoid unnecessary trouble.
The above points are the main reasons for the insufficient strength of the briquettes pressed by the briquettes press machine, except that the speed of these briquettes presses is too fast or too slow, which may cause the briquettes to be unsatisfactory. The specific situation needs to be distinguished.
In addition to the particle size of the material, what else affects result of the mineral powder briquetting machine?
With the increasing shortage of resources and energy, wastes from various metallurgical industries that were previously thrown away have also been re-used. The mineral powder briquetting machine is a high-pressure equipment that can compress various mineral powders and wastes into balls. Nowadays, the utilization of waste materials in the metallurgical industry has attracted more and more attention, and the users of mineral powder briquetting machines are also increasing. So what about the cones of the mineral powder briquetting machine?
Many consumers will respond that the quality of the balls is unstable, sometimes good and sometimes bad, after purchasing the ball press. In fact, the main reason for this problem is the particle size of the material. For the mineral powder briquetting machine, the particle size of the material is required to be below 5mm, preferably below 3mm, so that it is better to form cones, because the smaller the particle size of the material It is conducive to the close arrangement of particles. From the point of view of physics, if the particle size is small, the gap between each other will be small, and if the particle size is large, the gap will be large. Therefore, before the pressing of the mineral powder briquetting machine, the grinding and crushing of the raw materials must be in place, so that the strength of the pressed finished balls will be higher.
In addition to the material reasons, what are the other reasons that affect the forming of the mineral powder briquetting machine?
First of all, if the mineral powder briquetting machine is equivalent to a “stove” and the adhesive is an indispensable seasoning for cooking. The amount of binder used is also an important factor affecting the strength of the finished ball. Too high or too low binder dosage is not conducive to molding. Some mineral powder briquetting machines use 4%-8% of binder, while The dosage of some binders is generally 2-3%. Generally, we need to determine a better binder usage ratio through experiments.
Secondly, the amount of water also has a very important influence on the cones. The size of the water is directly related to the quality of the pellets, such as the forming rate, curing time, initial strength, and late strength. The presence of an appropriate amount of water can act as a lubricant. Reduce the internal friction of the molding system and improve the mechanical strength of the finished ball. If there is too much water, the water layer on the surface of the particles will become thicker, which will affect the sufficient density between the particles, which will reduce the mechanical strength of the finished ball. In addition, excessive moisture is prone to cracks when the finished ball dries, so that the finished ball is prone to breakage. The moisture content of conventional mineral powder briquetting machine should be controlled between 8-15%. If there are special circumstances, you can consult the manufacturer to decide according to the specific situation.
