Company Profile
Henan Zhengzhou Ming Machinery Co. Ltd. Was established in 1956. It was an entrenched factory appointed by Ministry of Machine-Building Industry and department of electrical machinery industry of Henan province. After development of over half a century, it has became a comprehensive modernized enterprise which integrated research, design, exploring, manufacturing, selling, installing, debugging and training. The factory covers an area of more than 55000 with fixed assets of more than RMB800 000 000.



Introduction of Rotary Kiln
Rotary kiln is a pyroprocessing device used to raise materials to a high temperature in a continuous process. It is widely used in the fields of cement production, nonferrous metallurgy, ferrous metallurgy, refractory material, paper-making, chemical industry and so on.



Structure of Rotary Kiln
(1) Support device: Advanced shaft structure, automatic temperature measuring device and electrical heating device.
(2) Catch wheel: Including mechanical wheel and hydraulic wheel.
(3) Gears: Single or double; Control the rotating speed by variable motor, direct current machine and frequency variable motor; Reliable, energy saving, and efficient.
(4) Cylinder tyre bolster: Lower bolster has three types: Fixed, zoom and floating. The structure is simple, replacement is convenient and won't hurt cylinder.
(5) Sealing equipment: There are many choices available according to kiln models, including air cylinder edge sealing, spring edge sealing, and graphite block sealing and combination for above. The feather has strong adaptability to cylinder rotating and swing and sealing effect is very good.
(6) Kiln head hood: Including stationary type and flexible type.

Working Principle of Rotary Kiln
Rotary kiln is a cylindrical vessel, inclined slightly to the horizontal, which is rotated slowly about its axis. The material to be processed is fed into the upper end of the cylinder. As the kiln rotates, material gradually moves down towards the lower end, and may undergo a certain amount of stirring and mixing. Hot gases pass along the kiln, sometimes in the same direction as the process material (co-current), but usually in the opposite direction (counter-current). The hot gases may be generated in an external furnace, or may be generated by a flame inside the kiln. Such a flame is projected from a burner-pipe (or "firing pipe") which acts like a large bunsen burner. The fuel for this may be gas, oil, pulverized petroleum coke or pulverized coal.
 


FAQ:
 
Q: Can I visit your factory?
A: Yes. Many domestic and international customers visit our factory every year.
 
Q: How long is the warranty of your equipment? Do you supply spare parts?
A: Our warranty period is one year generally. We can supply spare parts.
 
Q: Do you provide equipment operation training?
A: Yes. We can send professional engineers to the working site for equipment installation, adjustment, and operation training. All of our engineers have passports.
 
Q: Can you test our samples?
A: Yes. You can send your samples to us for test and analysis.