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Precipitated Calcium Carbonate(PCC)
Introduction
Indian company,
providing technical, engineering, marketing and management
consultancy, offers the technology of precipitated calcium
carbonate (PCC).
The process of production of PCC can be
divided into four sub-processes:
Generation of
producer gas: The coke is burnt in presence of steam
for its conversion into producer gas. the generator is a fully
integrated unit having a water cooling jacket around it and
a rotary ash removal system at the bottom. Alternate fuels
could be LNG, LPG, LDO or F.O.
Calcination
process: As suitable grade of limestone is calcined
into a vertical shaft kiln using liquid or gaseous fuel. The
process is endothermic and the following reaction takes place
- CaCO3-----------------CaO+CO2
Slaking process:
The quicklime is hydrolysed into slaked lime slurry with water
in a reactor equipped with a turbine type agitator. The chemical
reaction which takes place is - CaO+H2O-----------------------Ca(OH)2
Carbonation
process: The hydrated lime slurry is fed to the carbonation
tank provided with mechanical stirrers. Pure CO2 is bubbled
through this slurry to obtain PCC which is subsequently dried
and sent for packaging.
Areas of Application
Manufacture of rubber, plastics, paper,
paints, dentifrices, ceramics, putty, polishes, insecticides,
inks, shoe dressing
In food, cosmetics, pharmaceuticals, antibiotics
As filter in production of adhesives,
matches, pencils, crayons, linoleum, insulating compounds,
welding rods, removing acidity of wines
Advantages
The process technology offered guarantees
the product quality as characterised by the particle size
of the product which is critically controlled at each process
step by step maintaining precise condition of concentration,
temperature, pH and other physical conditions
The process is environment friendly and
does not emnate toxic pollutants
Production Capacity:
20 TPD to 6,000 TPA
Inputs Required
| Building |
1,500 sq. m |
| Land |
4,000 sq. M |
| Water |
20 cu.m/day |
| Power/fuel |
350 KW or 400 KVA |
| Other utilities |
Steam, 3TPH |
Manpower Reqd
Total
Skilled
Unskilled |
27
13
14 |
| Raw materials: |
8,000 TPA of limestone,
high grade CaO greater than equal to 55.50 %- free from
Fe, Mn, Co, etc. |
Development
Status: Commercialised
Transfer Forms
: Know-how, equipment, turnkey plant, training, technical
assistance, consultancy
For More Information, Contact:
Asian and Pacific Centre for Transfer
of Technology
P O Box 4575
Qutab Institutional Area
New Delhi - 110 016, India
Tel : +91-(0)11-6856276
Fax : +91-(0)11-6856274
Email: rvijh@apctt.org
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