|Controlling Part||Full Automatic / Semi-Automatic|
|Annual capacity||Customized (20, 000-300, 000 Tons Per Year)|
|Calcining system||Ebullition furnace|
|Fuel||Natural gas, diesel, coal, heavy oil|
|Raw material||Natural Gypsum Rock (Content of CaSO4.2H2O >80%.)|
|Finished powder usage||Gypsum board|
|Setting time||The Initial Setting Time: Shall Not Be Less Than 6 Minutes,|
The Final Setting Time: Shall Not Be More Than 30 Minutes
1. Gypsum powder quality standard: in compliance with GB/T 9776-2008
2.Main Technology(here take Nature gypsum rock as example)
Gypsum rock - first crushing -second crushing - grinding -
calcining - aging -finished products (CaSO4.1/2H2O)
After being heated and calcined with certain temperature,natural
dihydrate gypsum is dehydrated and decompounded,to get the product
whose major component is semi-hydrated gypsum(CaSO4.1/2H2O),that
is,calained gypsum(generally slaked gypsum).According to different
temperatures and pressure conditions during dehydration
decomposition,the obtained product is β-Type calcined gypsum.Basic
process of mechanized prouduction includes five large
systems:gypsum grinding,automatic measuring system,calcination
system,heat supply system,and aging&packing system.According to
client's requirement,gypsum crushing system can be added to crush
large gypsum rock to be with size of 0-30mm,and then conveyed into
A. Payment terms: 30% T/T in advance; 70%L/C or T/T
B. We can provide quality guarantee;
C. Kunlun bank account available to make convenient for Iranian
National Standard of Calcined Gypsum
Standard No.: GB/T 9776-2008
Scope of application:
Gelled material made by dehydrating natural gypsum(raw material).
Its main component isβ-GaSO4·1/2H2O, without any admixture or additive.
The natural gypsum should be in conformity with requirements of
"gypsum rock(JC/T700) for making cementing material" gypsum rock of
Grade 3 or more higher grades.
It is classified to be three grades: 3.0,2.0,and 1.6 according to
its 2h strength(breaking strength).
β-GaSO4·1/2H2O content(mass fraction) in Calcined gypsum should be not less than
Physical and chemical performance:
|Grade||Fineness(Screen residue of 0.2mm square screen)/%||Setting time||2h strength/MPa|
|First setting||Final setting||Breaking strength||Compression strength|
Responsibility of Buyer and Seller
Prepared by Buyer
1.1 Machinery and tools for installation, commission and
1.2 Transportation tool:2 sets of forklifts
1.3 Power supply system
a. High-voltage power supply
b. Substation and distribution station
1.4. Water supply& storage and drainage system
1.5 Civil engineering: Building construction, equipment
foundation(including pre-burying work), steel-concrete structure
silos and pools.
1.6 Material used for making machine's platform and supporting
frame of equipment
Provided by Buyer
2.1 Providing round-trip ticket and other transportation cost for
the Seller's workers
2.2 Providing accommodation and all kinds of necessary extra
charges for the Seller's workers during installation and
commissioning and training period
2.3 Providing all necessary large tools for installation, such as
crane, forklift, welder, acetylene& oxygen cutting machine, etc
2.4 Providing assistant workers to cooperate with the Seller's
workers during installing according to the Seller's requirement
2.5 Usage permission for special equipment
Provided by Seller
2.1 Production equipment
2.2 Gypsum Board Production Line,
Providing installation guiding engineers and technical workers
2.3 Providing 1 team leaders and 1 interpreters
2.4 Providing equipment foundation drawings, general arrangement
drawing of production line (layout plan, elevation drawing and side
view drawing) within 40 days after receiving down payment
2.5 Providing equipments' operation manual during training
2.6 Providing main equipments' general assembly drawing, wiring
diagram of control cabinets, PLC computer programs within 7 days
2.7 The Seller is in charge of commissioning and training
a. Commissioning: the Seller shall send engineers and technical
workers to plant site to do full-scale testing, and the Buyer shall
also send assistant staff to cooperate with the Seller's people.
b. The Seller's workers in charge of commissioning will do
performance operation, make on-site speeches and answer questions
to Buyer's technicians and operation workers under training. During
the whole process of testing, both sides shall work together. After
Buyer's workers master operation technique, the Seller will hand
over the whole running line to the Buyer's for operation and then
the training work is finished.
2.8 Within one year after signing the Acceptance Certificate, the
Seller shall provide technical consultation to the Buyer for free.
If the Seller's people are asked to be on the site, the Buyer shall
provide round-way tickets and accommodation abroad.
Main pollution sources:
Waste residue: Waste board and board edge cut down, etc.
Waste water: The sediment water left after the fan circulation use
in the product process, from washing pool and toilet water.
Noise: mainly is 95Db(A)or so noise from the fan.
Dust: From mixing material and cutting board.
Waste residue and disposal: It does not pollute the environment and
can be re-used afterreprocessing in gypsum powder production line.
Waste water and disposal: No industrial waste water. The living
wastewater is drained into the plant sewage network, and the
production wastewater from cleaning floor in the workshops can be
recycled after the secondary sedimentation. And the water used in
such equipment as fan can also be recycled.
Noise and deposition: Noise, which mainly comes from fan. Besides
setting soft joints at the exhaust inlet and exhaust outlet. Set
impedance complex mufflers at the exhaust outlet, which can low the
noise as much as 30Db (A).
Dust and disposal: Dust collection devices will be equipped in the
Safety design for factory area
The factory road traffic design and outdoor fire hydrant
arrangement will be in conformity with every requirement in
"Achitectural Design Fire Prevention Norm"; The pavements and
driveways are smooth, unblocked, and there are enough lighting
facilities at night; Set covers over the draniage ditches in the
factory; Make it easy to go through, discharge, convenient and
safe; at the same time do virescence in the whole factory to reduce
the dust and noises.
Safety design for workshop
In the workshop, certain safe distance must be left for the main
passages and operating passages, between equipments and the
building, between equipment and equipment, and between equipment
and passages; Set guard rail on all workbench edges; Set covers
over drainage ditches; Lighting is enough in the workshop; All
electrical equipments have ground protection, and there is
overhauling power of 36V to ensure of overhaul safety.
Harmful factor in producing:
Variety of harmful substance: Noises from fan, air compressor, etc.
Measures to reduce harmful factors: Do best to select low noise
equipments to reduce the noise from sound source, and meanwhile add
anti-vibration soft connectioner and muffler on the fan.
Precautionary measures of safety and sanitation
Protective appliances shall be allotted to each worker according to
real working conditions; All equipment is managed by certain
person, the detailed operational procedure shall be made. Workers
on duty must carry on safety education and corresponding skills
training; strictly operate according to operation procedure to
ensure the person's security and equipment's good condition;
Regularly carry on safety education to staff; Regularly organize
safety inspecton to dispel the accident potential in time.
Explosive materials are not produced and discharged in the
production workshop of this project. There is no factor of
Fire fighting system
Our equipment is not easy to produce fireworks, so don't need any
corresponding fire detection device.
After Sale Service
DCI is pleased to provide the parts,knowledge and expertise to
assist with all your plant's maintenance and upgrade needs.We can
supply as below:
All Rollers and Shafts
Forming Plate Parts
Forming Belts/Conveyor Belting
Plat Belt Drive Pulleys
DCI's guarantee is within 1 year free after delivery and long-term
DCI can help u to modify equipment and increase production capacity
DCI can help u solve any problems related to the gypsum equipment
DCI,the gypsum machinery expert,your best choice!