Introduction
Rotary kiln for magnesium oxide is a kind of kiln calcinating smashed magnesium powder by heated air.The kiln headcover and combustion apparatus. The barrel is a part for heating, adopting a high-quality calm steel coil. Because of particularity in calcination, kiln generally uses a variable diameter barrel.
Rotary Kiln for Magnesium Oxide Performance Feature
- Rotary kiln for magnesium oxide can be divided into transition zone, burning zone, and cooling zone. After entering kiln, materials go through resolving, calcining and cooling. Rotary kiln for magnesium oxide’s advanced technology improves the quality of materials and enhances materials’ abrasive resistance.
- Rotary kiln for magnesium oxide has a high quantity per unit volume, which increases the material layer’s thickness and rotating speed to heat materials evenly.
- Rotary kiln for magnesium oxide has so many advantages like high thermal cycle utilization, high thermal efficiency, low fuel consumption, low power consumption and low production costs.
Rotary Kiln for Magnesium Oxide Working Principle
Rotary kiln for magnesium oxide is supported by a roller device and controlled by the wheel stop device. It has a reliable seal for using shell seal in kiln head hood and axial contact seal in kiln tail hood. Rotation of kiln facilitates the mix of the materials in a rotary kiln to make materials fully mixed and react with each other. The burning pipe produces a lot of heat. Heat is conducted to materials by flame radiation, convection of hot air and conduction of kiln bricks. Materials move forward through kiln’s slope and rotation. Eventually, materials go into cooler from kiln head hood.
Rotary kiln for magnesium oxide’s working process can be divided into nine steps: mineral separation, entry, sintering, manual screening, inspection, mixed production, smashed product, examination, storage.
Rotary kiln for magnesium oxide ‘s materials are chosen from quality products(30-40mm). Materials go through calcining, cooling, grinding and molding. Then be mixed with ferrosilicon powder and fluorite powder. Reduce and produce extensive magnesium under 1200 to 1250 degrees centigrade and 1.33pa Vasco in a reduction furnace. After a series of processes such as flux refining, ingot casting, and surface treatment, produce finished magnesium ingots.
Kiln Operation Parameters
| Product Standard (m) | Kiln Body Size | Electric Power(kw) | Total Weight(t) | Remarks | ||||
| Diameter(m) | Length(m) | Inclination(%) | Yield(t/d) | Roast Speed(r/min) | ||||
| Φ2.5×40 | 2.5 | 40 | 3.5 | 180 | 0.44-2.44 | 55 | 149.61 | |
| Φ2.5×50 | 2.5 | 50 | 3 | 200 | 0.62-1.86 | 55 | 187.37 | |
| Φ2.5×54 | 2.5 | 54 | 3.5 | 280 | 0.48-1.45 | 55 | 196.29 | Outside Decomposition Kiln |
| Φ2.7×42 | 2.7 | 42 | 3.5 | 320 | 0.10-1.52 | 55 | 198.5 | |
| Φ2.8×44 | 2.8 | 44 | 3.5 | 450 | 0.437-2.18 | 55 | 201.58 | Outside Decomposition Kiln |
| Φ3.0×45 | 3 | 45 | 3.5 | 500 | 0.5-2.47 | 75 | 201.94 |
Rotary Kiln for Magnesium Oxide Common Failures and Solutions
Rotary kiln for magnesium oxide ring formation
Solution: When the ring formation position is far from the feed pipe, you don’t need to turn off the exhaust and reduce the feeding amount. You should only pull out the burner pipe.
Rotary kiln for magnesium oxide kiln shooting
Solution: Reduce the ventilation of heated air to decrease the slag of coal powder. If the ventilation of heated air is necessary, you should turn on the exhaust fan and reduce the speed of the kiln.
Rotary kiln for magnesium oxide dust accumulation in kiln tail hood
Solution: Quickly deal with the plugging problem in the preheater, flap valve, pipes, and doors to reduce the impact of air leakage. Make sure that the kiln’s temperature and pressure are back on the normal level then resolder the anchor and castable the slope of the back end chamber and feed pipe according to design requirements.
Rotary kiln for magnesium oxide overheated tug axle
Solution: Drain the circulation water and increase the volume of cooling water and increase lubrication between block belting leather and pulley. If the temperature of the pulley is too high, you should put some water into the sink below the pulley to cool it down; If the shoulder or thrust collar of the rotary kiln for magnesium oxide is overheated, you should change the operating status of hydraulic wheels.
Rotary kiln for magnesium oxide sphere wear or crack in the pulley
Solution: Adopt polymer composite materials, which have higher adhesion, better comprehensive mechanical properties, and better water, oil, and chemical media resistance. So, polymer composite materials can reduce repair time and make great economic value.