Shanghai Clirik Machinery devoted into the filed of gypsum powder making machines R&D and manufacturing more than decade years, more information welcome to visit our website https://www.clirik.com or call us 008618001642498

1. 1
The Boiling Furnace For Gypsum Industry
Shanghai Clirik Machinery Co.,Ltd
Devoted to the powder process area
ShanghaiClirik
M
achinery
Co.,Ltd.

2. 2
Brief Introduction
Gypsum is a white to gray mineral found in the
earth’s crust. Its properties and products of
gypsum to be used as building material in
construction works are discussed such as the
plaster of paris, gypsum board, wallboard, cement
etc. What is more it is known as "satin spar" and
"alabaster" are used for a variety of ornamental
purposes.
With the development and progress of gypsum industry, the need of gypsum powder is growing,
also with the quality of gypsum powder. During the whole procedure, the drying and dehydration
are the key link, and it is also the difficult part. According to such a condition, after many years
researching and exploring, we have developed a new generation dehydration device which are
suitable for all kinds of gypsum production demand boiling furnace.
Two different modifications of the hemihydrate CaSO4 x ½ H2O are produced
Gypsum Product
ShanghaiClirik
M
achinery
Co.,Ltd.

3. 3
Workflow for the calcined gypsum plant
The nature gypsum ore is crushed into small particles(under 15mm), then send into the raw material
silo by the No.1 bucket elevator.
By the vibrating feeder, the gypsum granular are fed into roller mill to grind into 100-200 mesh
powder. Then flow into the transit(buffered) silo by the No.2 bucket elevator.
With the dosing screw conveyor the gypsum powder is fed into furnace boiler and reaches the
material bed area. The roots blower under the kettle blows the air into furnace to let the gypsum
powder into boiling statue. There are many coil pipes in the materials bed area, the heat conductive
oil is circulated in the tubes, release the heat into the inside of furnace. Under a certain temperature,
the dried and dehydrated powder become light, and flow to the outlet automatically. There is the
dust catcher to collect the dust and air at the roof of kettle, to make sure the boiling gypsum powder
in the balance condition.
After the calcining progress, the qualified powder will flow out to the No.3 bucket elevator. By the
lifting, the powder is transported into the final powder silo. After the temperature decrease down,
the calcined gypsum powder is packed into 25kg or 1 tons jumbo bags.
Crushing Grinding Mil Furnacing Packing
Heating Exchanger
ITEM
1- Crushing part
2-Bucket Elevator
3-Raw Material Silo
4-Roller Mill
5-Bucket Elevator
6-Transit Silo
7-Boiling Furnace
8-Bucket Elevator
9-Plaster Silo
10-Packing Machine
11-Heat Oil Exchanger
ShanghaiClirik
M
achinery
Co.,Ltd.

4. 4
The Boiling Furnace Working Principle
ShanghaiClirik
M
achinery
Co.,Ltd.

5. 5
The working Features
1. Small area occupied, compact structure, big capacity
Such as the 10 t/h, the outline dimension is 2*2*5m
2. Without the wear part, simple structure
The furnace don’t has the running part. And due to the low-temperature source, the furnace does not
have any risk of being burnt in any condition.
3. Easy controlling, high heat exchange rate 67-76%
The feeding size, air flow speed, heating temperature can be controlled.
The heat oil tube and pipes temperature is uniform, heat transmission directly to powder.
4. Better quality for the final gypsum powder
Adopting the low temperature heat source, avoid the over-head situation, the anhydrite (CaSO4)
content under 5%.
ShanghaiClirik
M
achinery
Co.,Ltd.

6. 6
Appendix
1. The calcined gypsum quality
The calcined gypsum qualtiy is equal to or exceeded the requirement of the national 《calcined gypsum》
standard.
Main content: semi-hydrated gypsum content: ≥80％
dihydrate gypsum content: ﹤5％
Soluble anhydrous gypsum: ﹤5％ adjustable
The initial setting time: 3～8min adjustable;
The final setting time: 6～15min adjustable
Standard consistency: 78～85％ adjustable
2. The characters between kiln and boiling furnace
3. Minimum fluidization velocity
ShanghaiClirik
M
achinery
Co.,Ltd.