1. Iodine value: The iodine value is a difference in the performance of activated carbon. The iodine value of the shell, bamboo charcoal and coal is several hundred. The iodine value of the activated carbon raw material is 800, 850, 900, 950, 1000, 1100 mg/g, etc. (Iodine value is The liquid phase adsorption index can generally see whether the specific surface area of ​​the activated carbon and the micropores are developed, and the gas phase adsorption index is critical: CTC adsorption value, benzene adsorption value, good activated carbon CTC>100%, benzene adsorption>50%), The adsorption capacity is also different! The cost price is also different! The activated carbon coconut shell with the same iodine value has the best adsorption effect on small fractions. Different applications choose activated carbon of different materials. Weight by hand: As mentioned above, in order to improve the adsorption performance of activated carbon, only the pore structure can be made on activated carbon as much as possible. The more pores, the more loose the activated carbon and the lighter the relative density, so it is good. The activated carbon will be lighter in hand, and in the case of the same weight package, the activated carbon will be much larger than the inferior activated carbon. 2, look at the bubble: A small amount of activated carbon is put into the water. Due to the penetration of water, the water will gradually immerse into the pore structure of the activated carbon, forcing the air in the pores to be discharged, thereby generating a series of extremely fine bubbles, pulling out a small bubble line in the water. At the same time, it will make a sound of bubbles, which is very interesting. The more intense this phenomenon occurs, the longer the duration, the better the adsorption of activated carbon. 3, see the ability to decolorize: Another manifestation of the adsorption capacity of activated carbon is the ability to decolorize. Activated carbon has the magical ability to turn colored liquids into light or colorless. This is actually because activated carbon adsorbs pigment molecules in colored liquids. Because of this characteristic of activated carbon, it is widely used in the production process of brown sugar to white sugar in the sugar industry. Take two transparent cups, put pure water in one cup, and then drop a drop of red ink (you can use any kind of pigment that is easy to observe but does not change the nature of the water, such as blue ink, printer color ink, However, you cannot use ink and carbon ink. After mixing, pour half of the colored water into another cup for comparison. Put the activated carbon into the colored water, the amount should reach half or more of the water, so the effect will be more obvious. After standing for 10-20 minutes, compare with the comparative water sample. Under the same conditions, the stronger the decolorization effect, the adsorption of activated carbon. The better. The use of diamond cord core drill bits must be done step by step according to the requirements of the onion, not to be rushed, and the drill tool assembly, deployment, and maintenance must be done well. Drill Bits,Diamond Drill Bit,Surface-Set Diamond Bits,Pcd Drill Bits WUXI XINZUAN GEOLOGICAL EQUIPMENT CO.,LTD. , https://www.wxsmrxz.com
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