40 Years Experience Professional Mini Cement Plant Rotary Kiln

40 Years Experience Professional Mini Cement Plant Rotary Kiln

Gypsum Introduction of Mini Cement Plant Rotary Kiln :

Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. To make gypsum as construction material, calcination process is needed, and part crystal water will be removed from gypsum. The calcined gypsum's chemical formula is CaSO4· 1/2H2O.  It is widely used as raw material for gypsum board, plaster, cornice, school chalk, etc.
 
The gypsum board production line is composed of crushing system,grinding system, calcining system, energy supply system, conveying system, packing system and storage system.

 
 The basic process of making gypsum powder is:gypsum rock -- crusher -- raw material silo -- gypsum rotary kiln -- grinder- silo-- packing machine

The Crusher will break the big-size gypsum ore into small pieces, and then the small pieces will be sent gypsum rotary kiln for calcining, after calcining, using raymond to grind gypsum into fine powder, then using packing machine.

Production Capacity of gypsum powder production line:10, 000tons/year ---- 200, 000tons/year

Raw Materials:Content of CaSO4 2H2O in gypsum mine >80%.The grade of mine and the crystal configuration will influence the quality of semi-hydrated gypsum.

Fuel for gypsum powder Production line:Natural Gas, Oil

Rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process. 

Materials produced using rotary kilns include:cement, lime, refractories, metakaolin,titanium dioxide,alumina,vermiculite,iron

ore pellets, zinc oxide,gypsum, etc.

Gypsum rotary kiln structure:

Gypsum rotary kiln is composed of cylinder, gears, support device, kiln liner and kiln tail sealing equipment, kiln head hood and

combustion.

Working principle of gypsum rotary kiln:

The 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). 

Gypsum rotary kiln technical parameter:

Main Parts of gypsum powder production line:

1. Ore Station

2. Crusher

3. Grinding System

 4. Calcine Kiln

5. Exit System

6. Material Elevator

7. Silo

8. Entrance System

9. Coal/Natural Gas System

 10. Dust Collector

11. Material Elevator

12. Aging Silo

2.1.1 Crushing, Grinding Section
The forklift driver removes the gypsum ore from the quarry into the hopper in front of the crusher, and then the gypsum ore is crushed into the 20mm materials, which are later sent to the mill by the hoist to be grinded into qualified gypsum powder (raw gypsum).
2.1.2 Calcining Section
The grinded gypsum powder is lifted into gypsum calcining machine for calcination. The calcining machine uses gas heat conduction oil furnace, however, other fuels like coal, methane, LPG, diesel oil, heavy oil, etc. can also be used. Due to its low temperature, slow burning calcining mode, the stability of gypsum quality is well ensured.
2.1.3 Finished Product Packing and Storing Section
Calcined gypsum powder is lifted into the finished product silo through a hoist, where an automatic weighing and packaging machine is used to pack 50kg gypsum powder per bag for marketing or storing.

Application of gypsum:

Gypsum board is primarily used as a finish for walls and ceilings, and is known in construction as drywall, sheetrock or plasterboard. Gypsum blocks are used like concrete blocks in building construction. Gypsum mortar is an ancient mortar used in building construction. Plaster ingredients are used in surgical splints, casting moulds and modeling.

How to visit us ?

If you want to visit our factory, please note our city name, Zhengzhou City, Henan Province, China(mainland)

Our air port name is : Zhengzhou Xinzheng International air port.

Train station name is: Zhengzhou (Zhengzhou north) train station