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Gypsum Crumb production equipment



Mill




Finished product bin



1.Manufacturing technique
1.Gypsum stone is crumbled in the crusher to the granules of 25 mm, and is moved to the mill for subsequent abrasion.
After sieving the crumb of required size is sent to furnace for burning.
The remaining crumb is sent back for repeated crumbling.After burning the crumb is sent to bin or production shop.
2.Process layout for granules less than 30 mm.
Raw materials→hammer crusher→untreated mixture elevator→Raymond- 4R Raw crumb mill →raw crumb elevator →furnace with boiling layer→elevator for finished crumb→crumb bin → package for finished products
 

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                        heat conducting oil stove


2.Stove with boiling layer. New equipment for dehydration.
Operation principle :main part of the furnace is coiled radiator of small diameter.
Hot oil enters the coil, in the process of heat exchange it goes inside the furnace.
A cam ventilator is mounted in the lower part of furnace, the wind turbines blows the cold air into the furnace.
The powder blown to the furnace reaches the boiling state. At a definite temprerature recrystallization moisture is removed from the powder.
When the materials becomes light, it moves to outlet automatically.

3. Electric control system
DCS, Mitsubishi (Japan)– PLC

4. Number of workers
Crushing system – 2 persons/day (including driver of the loader)
Abrasion system - 1 person/8 hrs (3 persons/24 hrs)
Burning system – 1 person/8 hrs (3 persons/24 hrs)
Heat supply system 2 persons/8 hrs (6 persons/24 hrs)
Adjuster – 1 person/24 hrs.
Machine repair – 1 person/24 hrs.
Total: 16 persons

5.Productivity
Time of production – 300 days/year х 24 hrs/
Productivity machine hour: ≥5.6 tons/hr (finished crumb) 40 000 tons/year

6. Production size
Grade: ≥100 mesh
Bending resistance force : ≥1.8Mpa
Pressure resistance force : ≥3.0Mpa.
Raw materials:
Semi-aqueous gypsum : ≧80%
Gypsum dehydrate : ﹤5%
Soluble karstenite : ﹤5%
Beginning of solidification: 3-8 min
Finishing of solidification : 6-15 min.
Solidification: 70-85%

7. Room specification
30m * 18m =540 m2

8.Equipment
1. Crushing - hammer crusher 800*600 (raw material feeding hole size)– 1 unit.
LTUHH250 bucket elevator – 1 unit.
Non-recycled crumb silo– 60 m3 – 1 unit.
2. Crumbling -Raymond 4R3216 mill – 1 unit
LTUHH250 bucket elevator – 1 unit.
3. Annealing -Pipe-from screw conveyor – diameter 300, 1 unit.
Damping silo – 10 m3 – 1 unit.
Furnace with boiling layer 1,6*1,4m (raw material inlet hole size)– 1 unit.
Furnace – 1 unit.
Cam ventilator – 1 unit.
Transformer – 1 unit.
Root canal reamer – 8 units.
Repair platform – 2 units.
Support frame I – 4 units.
Support frame II – 4 unit
4.Finished product :
LTLHH250 bucket elevator – 1 unit.
Finished product silo – 100 m3 – 2 unit.
LCUZH250 sample catcher – 2 units.
Single-side screw lock – 400*400 (Raw materials feed inlet size ) – 2 units.
Rigid rotating feeder – 400*400 (Raw materials feed inlet size) – 2 unit.
5.Heat source -Boiler – 2 mln kcal - 1 unit.

Specifications:
Power of main machines :
1. Hammer crusher: 15 kW.
2. LTUHH250 bucket elevator: 3 kW (3 units – 9 kW).
3. Raymond 4R3216 mill: 72 kW.
4. Pipeform screw conveyor : 3 kW.
5. Furnace with boiling layer : 18 kW.
6. LCUZH250: sample catcher 1.1 kW (2 machines – 2.2 kW).
7. Rigid rotating feeder : 3 kW. (2 machines – 6 kW).
8. Boiler: 110 kW.
Total energy : 235.2 kW
Weight of the whole line : 160 tons
Hammer mill - 2 tons.
Furnace with boiling layer - 8 tons.
Boiler - 18 tons.
Main machine size :
1.Hammer crusher - 1.5*1,22*08 m
2. Furnace with boliing layer - 4*1,8*1,9 m
3. Boiler - 2.8*8*2 m
Time of production : 3 months
 


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