Sintered silicon carbide (SSiC) is processed by pressureless sintering. SSiC, as compared to SiSiC (silicon-infiltrated silicon carbide ), is a single-phase material, and thus is superior to SiSiC in resistance against aggressive liquids (chemical stability).
Silicon carbide liner is a type of component that protects equipment. The use of silicon carbide liner reduces equipment wear, vibration and noise, and has an anti-corrosion effect.
The use of silicon carbide liner can also facilitate the maintenance of mechanical equipment, simplify the structure of equipment and manufacturing process. The wear – resistant silicon carbide bushing plays an important role in practical work.
Technical data sheet of silicon carbide cylinder liner
| Item | Unit | Data |
|---|---|---|
| Max Working temperature | ℃ | 1380 |
| Density | g/cm³ | ≥3.02 |
| Porosity | % | <0.1% |
| Bending Strength | Mpa | 250(20℃) |
| Mpa | 280(1200℃) | |
| Modulus of elasticity | Gpa | 330(20℃) |
| Gpa | 300(1200℃) | |
| Thermal conductivity | W/m.k | 45(1200℃) |
| Coefficient of thermal expansion | K-1×10-6 | 4.5 |
| Rigidity | 13 | |
| Acid alkaline-proof | Excellent |
What are the advantages of silicon carbide cyclone in coal preparation
Compared with other coal preparation methods, silicon carbide cyclone has its unique advantages, which can be summarized as follows:
It has the advantages of large processing capacity per unit volume, high separation accuracy and low separation particle size limit, which can be used for raw coal separation with various washability. The unit capacity of cyclone is much higher than other gravity separation equipment.
Less investment and convenient management. The traditional view is that the dense medium coal preparation system is complex, the equipment wear is serious, the maintenance quantity is large, the management is difficult, the coal preparation cost is high, and so on. However, with the continuous improvement of dense medium coal preparation technology, especially the advent of three product heavy medium cyclone, and the emergence of corresponding auxiliary equipment and reliable wear-resistant materials, the above understanding has fundamentally changed.
The small size of the plant and the compact and neat layout of the equipment make it convenient for the construction of the coal preparation plant to realize the scale and greatly shorten the construction period of the coal preparation plant.
Effective method to prevent clogging of SiC cyclone
During the operation of SiC cyclone, the spilled ore, old belt head, brick and tile may enter into the cyclone and cause blockage of the cyclone. Once blocked, the untreated pulp will directly enter the overflow, causing the overflow concentration to increase. In view of this problem, the small editor introduces the following several effective methods to prevent the blockage of silicon carbide cyclone, hoping to help you.
First is to install the screen on the pump tank in an inclined way. The size of the screen should be less than one third of that of the sand settling mouth. This is a commonly used and effective method. The materials on the screen are cleaned manually on a regular basis.
The second is to install the roller screen in front of the pump pool with height difference, once and for all, save labor, and is suitable for the occasions with many sundries such as stones.
Third, large diameter hydrocyclone should be selected if possible, because the grit nozzle is also increased correspondingly, and the general debris is not easy to be blocked.
In addition, once the staff found that the desilting nozzle of SiC cyclone is blocked, open the standby hydrocyclone and close the blocked hydrocyclone for cleaning. After the cyclone grit nozzle is blocked, the violent vibration of hydrocyclone may break the foundation screw, especially the cyclone installed at high position. Because it involves the safety of equipment and personal safety, the staff should deal with it as soon as possible.