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88910291
Project overview
Silicon carbide (SiC) is made by smelting quartz sand, petroleum coke (or coal coke), and wood chips through resistance furnace at high temperature. Silicon carbide also exists in nature as a rare mineral, morimorimorite. Silicon carbide is also called carborundum. Silicon carbide is one of the most widely used and economical non-oxide high-tech refractory raw materials such as C, N and B. It can be called steel sand or refractory sand. At present, China's industrial silicon carbide is divided into black silicon carbide and green silicon carbide, both of which are hexagonal crystals, with specific gravity of 3.20~3.25, and microhardness of 2840~3320 kg/mm2.
Equipment overview
Silicon carbide drying production line is a new high-efficiency fluidized drying equipment developed by our company to overcome the low efficiency and high consumption of static drying. In the design process, the machine fully combines the characteristics of fluidization drying, such as airflow drying, to maximize advantages and avoid disadvantages, so that the machine has a reasonable technological structure and superior performance, and truly realizes the goal of low consumption and high efficiency of fluidization drying.
The machine has a wide range of applications. It can be used to dry fine powder materials with small specific weight, such as silicon carbide, black silicon carbide, green silicon carbide, black silicon carbide powder, green silicon carbide powder, foam ceramic silicon carbide, refractory silicon carbide, etc. The equipment has high thermal efficiency, low energy consumption, small floor area, simple configuration and convenient operation and control.
Working principle
The hot air enters the mixing and crushing drying chamber from the bottom of the dryer through the air inlet at a suitable spouting speed. It has a strong shearing, blowing and rotating effect on the material, so the material is granulated due to centrifugation, shearing, collision and friction, which strengthens the mass transfer and heat transfer. At the bottom of the dryer, the larger and wetter particles are mechanically broken under the action of the stirrer, and the particles with lower moisture content and smaller particle size are entrained and raised by the rotating air flow, and further dried during the rising process. Because the gas-solid flow is rotating, the inertia of the solid phase is greater than the gas phase, and the relative speed between the solid and gas phases is larger, and the heat transfer effect between the two phases is strengthened, so the drying intensity of the dryer is high.
Engineering advantages
1、With strong professionalism, large processing capacity, fast drying rate, the surface area of the material liquid after atomization is greatly increased, and the drying time is greatly reduced under vacuum.
2、The equipment has simple structure, no wearing parts and low maintenance costs.
3、The operation is simple and stable, the control is convenient, and the intelligent operation can be realized.
4、Liquid-liquid separation is realized by using different boiling point temperatures.
5、The atomizer with special non-standard design has good atomization and separation effect.
6、It integrates chemical reaction and drying to complete the reaction and drying at one time and optimize the equipment performance.