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Application of Niro Closed Circuit Spray Dryer in Cemented C Time:2018.03.21
    Cemented carbide is known as the teeth of modern industry. Due to its high strength, high hardness, high wear resistance and good chemical stability, it has a wide range of applications. With the wide application of cemented carbide in processing tools for the electronics industry (such as micro drills), machining tools and micro engraving tools for high-precision grinding centers, and mining cutting tools and metal cutting tools for mines, the quality requirements thereof have increased. The higher. The advanced Niro closed-circuit spray dryer is one of the key conditions for producing high-quality carbide. At present, there are two main methods for the preparation of domestic mixtures: one is wet granulation machinery granulation production process; the other is wet milling spray drying production process. The former method is simple, but the process is long. Drying and granulation need to be separated by two processes. At present, the second method is mainly adopted. The process is simple and easy to control. The quality control of the finished product can be effectively controlled.
 
    Niro has developed closed-circuit spray drying equipment specifically for carbide powders, which is also a popular processing technology for most of the world's cemented carbide powders. Nilu has provided more than 100 sets of drying equipment for global hard alloy powder production companies. In the field of reform, Nilu has absolute superior experience and production design capabilities.
 
   For most cemented carbide powders, it is generally dissolved in an organic solvent such as ethanol, acetone, or ethane to form an organic solvent suspension, which can effectively prevent the hard alloy powder from being oxidized by contact with oxygen. Niro designed a closed loop spray dryer specifically for organic solvents. Nitrogen is used as the air source inside the device. The entire internal system is in a closed state. This effectively protects the carbide powder from oxidation by contact with oxygen. Closed-circuit systems require complicated and compact structural design and better CIP cleaning systems. Niro's extensive engineering experience and absolutely leading technological design can guarantee the absolute tightness of this process, and thus absolutely guarantee the entire drying process. Safety, the best control of the finished powder quality can also be achieved.
 
    Niro closed-circuit spray drying adopts the original import, all the whole machine is completed by the Danish manufacturing base. The overall operating system uses a PC/PLC system and is equipped with flat panel monitors, menus and color drop-down menus to ensure stable operating conditions for a single process and to meet the need for high-quality, uniform, reproducible, free-flowing pressed powders. The CIP system under the control of the PLC provides operators with more comprehensive security protection and can be fully completed in a relatively short period of time.


 
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