How to control the thickness of powder by the special crushing classifier for lithium battery cathode materials

　　Special grinding and classification equipment for lithium battery cathode materialsSichuan Giant is mainly composed of three major products and more than ten series. According to the battery powder positive and negative materials, different capacity requirements and applications, custom manufacturing production of special equipment. The product has the characteristics of high yield, uniform particle size distribution and good particle size morphology. It can be widely used in micron-level experiments and production of battery powder cathode materials. Battery powder positive and negative materials: typical materials are-lithium manganate, lithium cobalt oxide, lithium iron phosphate, lithium carbonate, spherical graphite, petroleum coke, pitch coke, ternary materials, nickel hydrogen alloy, ferrous oxalate, lithium titanate, lithium manganate, lithium nickel manganese oxide, etc.

　　Ultrafine pulverizer for lithium battery cathode materialThe fineness adjustment method, under the normal working condition of the ultrafine pulverizer, the factors affecting the fineness are air volume, the speed of the grading wheel, the feeding amount and the wear degree of the wearing parts.

　　When the fineness is too coarse: If the component is the maximum, first reduce the feeding amount, and then increase the frequency of the grading wheel; If the requirement is not met, turn off the air volume. So repeated adjustment, to find and achieve the fineness requirements is the best yield control point.

　　When the fineness is too fine: First, increase the air volume. If the air volume is the maximum, reduce the frequency of the grading wheel. After the current drops, increase the feeding volume. So repeated adjustment, to find and achieve the fineness requirements is the best yield control point. For example, the laboratory airflow crusher produces low-grade feed, which does not require high fineness. When only the output is pursued, the air volume is opened to the maximum, so as to reduce the frequency of the grading wheel and increase the feeding amount.

At a certain moment, some larger particles that have not been crushed to the specified fineness may approach the middle of the swirl field. Due to the effect of air flow, they overflow in the side gap of the impeller and enter the product end, widening the particle size range of the product, increasing the average particle size and reducing the quality of the product, especially when the solid gas in the grinding chamber is relatively large or the feeding is uneven.

After adding the built-in grading impeller, due to the high-speed operation of the impeller, the swirling flow field in the cavity is stabilized, so that the large particles that are not crushed are always stable in the crushing zone. Under the action of high-speed airflow, the effective collision opportunity is enhanced and the crushing efficiency is improved.

Adjusting the feed rate determines the residence time of the material in the mill cavity. If the feed rate is low, the residence time is long, the number of particle cycles increases, and the fineness of crushing is small. However, the feed rate is low, the number of particles per unit volume is small, the chance of collision between particles will be reduced, and the particle size will be large; while the feed rate is too high, the residence time is too short, which is not good for crushing.

As can be seen from above,Special Crushing and Classifier for Lithium Battery Cathode MaterialThe processing fineness is related to the setting of each parameter. In order to achieve the required fineness, the parameters need to be set reasonably. For more information about superfine grinding and grading machine for lithium battery cathode materials, please continue to pay attention to Sichuan Giant. We provide 24-hour call advisory service.

According to the physical characteristics of the positive and negative materials of the battery powder, different equipment is used for crushing and grading to achieve the best output ratio. According to a large number of successful cases of our company and many battery powder enterprises, the crushing effect can be achieved by selecting the special mechanical ultra-fine pulverizer for battery powder of our company-grading impact mill (effectively reducing the energy consumption of production equipment). For specific materials of lithium batteries and nickel-hydrogen batteries, fluidized bed jet crusher can be used for crushing and classification. High purity requirements, anti-oxidation can be used to protect the crushing classifier with inert gas, isolated from oxygen closed production. Giant powder equipment can be customized according to different raw materials and requirements of each enterprise. Welcome to consult!!