Calcium Carbonate (CaCO3)/Natural Calcite Powder
Gulshan Polyols Ltd produces over 19 grades of Calcium Carbonate (Precipitated, Activated, Ground Natural Calcite Powder and Wet) used in various industries. Four of GPL’s facilities, spread across the country, are dedicated to manufacturing Calcium Carbonate with an integrated capacity of 1,05,000 MTPA. Facilities have in-house microbiology laboratory with extensive R & D facility and are backed by 7MW captive power plants. GPL has imported classifiers from IVA Industrieberatung GmBH, Germany, for Ground Natural Calcite Powder. In order to make it-self eco-friendly, all facilities have clarifiers to recover maximum solids and waste water discharge.
Muzzafarnagar, U.P.: The facility is set up in total area of 1,00,000 sq mt. and produces PCC, GCC & ACC, at a total capacity of 70,000 MTPA. It has a 7MW captive power plant to suffice its power needs. The facility is ISO 9001:2008 certified. The facility is equipped with a state-of-art microbiology laboratory with extensive R & D facilities. All plants have international quality equipments and technology and provide employment to over 700 people..
Bharuch, Gujarat: The facility is set up in 10,000 sq mt and produces ACC, at a total capacity of 15,000 MTPA.
Dhaula Kuan, H.P.: The facility is set up in 30,000 sq mt and produce NGCC/CALCITE, at a total capacity of 20,000 MTPA.
Abu Road, Rajasthan: The unit is set up in 10,000 sq mt. It will commence production from April 2012, with designed capacity of 50,000 tons P.A. to make fine Ground and Coated Calcium Carbonate as well as Natural Calcite Powder. This unit enjoys proximity to world-class quality in many stone varieties. Company also intends to import marble to ensure supply of superior product quality.
Packaging: Packaging is done in different denominations such as 25 Kg / 50 Kg / 1000 Kg in HDPE /Paper bags as per customer requirement. WGCC is packed in both liquid bulk tankers (SS) and barrels.
Prominent Clients: Colgate-Palmolive, Hindustan Unilever, Amar Remedies, etc. GPL exports Calcium Carbonate to neighboring countries like Nepal, Bangladesh and as far as Muscat, Nigeria, U.A.E., etc.
Facts about Calcium Carbonate
- Precipitated Calcium Carbonate is manufactured by calcination of best quality Limestone.
- Activated Calcium Carbonate is produced by surface coating the Precipitated Calcium Carbonate with Stearic Acid, Titanate Coupling Agent, etc.
Applications of Calcium Carbonate
- PVC & Cable: PCC improves the base properties of polyvinyl chloride by adding stiffness to the polymer matrix and improves impact resistance. It also improves mechanical properties (tensile strength and elongation) and electrical properties (volume resistivity). Polypropylene compounds are often filled with calcium carbonate to increase rigidity, a requirement that becomes important at high use temperatures.
- PAINTS: PCC is used as an extender in paints, in particular matte emulsion paint. It provides a greater covering strength, thus increasing the performance of high quality paints, oil synthetic and other coatings. It contributes to the opacity and that the paint will cover, without dripping, the surfaces.
- DENTRIFICE: Toothpaste and tooth powder manufacturers use PCC as a cleaning-polishing agent, with benefit of fluffiness due to low Bulk Density. PCC also offers different water absorption options, which enables the manufacturers to choose most suitable option to maintain desired water content in the toothpaste.
- DETERGENTS: PCC is used as a mineral filler to improve the consistency and dryness of the final mass of Detergent.
- RUBBER: PCC maintains flexibility and increases resistance to torsion and traction thus improving rubber’s mechanic and electric characteristics.
- PLASTICS: PCC is valued for its high brightness and light scattering characteristics in paper filling and coating applications.
Technical Specifications for CaCO3
| Parameters | PCC | GCC/WGCC |
| CaCo3(min) | 97% | 98% |
| Magnesia as Mgo(max) | 0.5% | 0.5% |
| Silica as SiO2(max) | 0.5% | 0.3% |
| Iron as Fe(max) | 0.01% | 0.01% |
| Manganese as Mn | .003% | .003% |
| Fluoride(max) | 0.05% | 0.05% |
| Phosphate(max) | 0.07% | 0.07% |
| Sulphate(max) | 0.25% | 0.25% |
| Copper Cu(max) | 5PPM | 5PPM |
| Lead Pb(max) | 10PPM | 10PPM |
| Arsenic As(max) | 2PPM | 2PPM |
| Chloride Cl | Traces | Traces |
| Matter insoluble in HCL(max) | 0.2% | 0.2% |
| ph value | 9.8±0.5 | 0.2% |
| Soluble alkali(max) | 0.2% | Traces |
Following are the common technical analysis of all grades of PCC, which are controlled by meticulous processing conditions as well as selection of raw material.
| Typical Chemical properties | Percentage |
| Calcium Carbonate as CaCo3 | 98.5 ± 1 |
| Magnesium Oxide as Mgo | 0.15-0.5 |
| Silica as SiO2 | 0.500 Max. |
| Alumina as Al2O3 | 0.1-0.5 |
| Soluble Alkali as Na2O | Less Than 0.15 |
| Iron As Fe | Less than 100 ppm |
| Chloride | Traces |
| Ph | 9.8 ± 0.5 |
| Loss on Drying | 1.0 Max |
| Loss on ignition | 43.5-44 |
| Typical Physical properties | |
| Color | Bright white |
| Brightness | 98 ± 1 |
| Mean particle size range | 1.5 -8 Microns |
| Bulk density (gm/cc) | 0.35-0.95 |
| Residue (325 #) | <0.15 |
Common technical data sheet for GCC:
Following are the common technical analysis of all grades of GCC, which are controlled by changing grinding conditions as well as selection of raw material.
| Typical Chemical properties | Percentage |
| Calcium Carbonate as CaCo3 | 97-99 |
| Magnesium Oxide as MgO | 0.4- 1.0 |
| Silica as SiO2 | 0.3-0.8 |
| Alumina as Al2O3 | 0.1-0.3 |
| Soluble Alkali as Na2O | Less Than 0.05 |
| Iron As Fe | < 100 PPM |
| Chloride | Traces |
| Loss on Drying | 0.3 Max |
| Ph | 9.5 ± 0.5 |
| Loss on ignition | 43.0-44 |
| Typical Physical properties | |
| Color | White |
| Brightness (ISO) | 93% +_1% |
| Mean Particle Size Range | 1.5 -8 Microns |
| Bulk Density (gm/cc) | 0.9-1.35 |
Common technical data sheet for WGCC (Dry basis):
Following are the common technical analysis of all grades of WGCC which are controlled by changing grinding conditions as well as selection of raw material.
| Typical Chemical properties | Percentage |
| Calcium Carbonate as CaCo3 | 97-99 |
| Magnesium Oxide as Mgo | 0.15- 0.5 |
| Silica as SiO2 | 0.3-0.8 |
| Alumina as Al2O3 | 0.1-0.3 |
| Soluble Alkali as Na2O | 0.05-0.1 |
| Polyphosphates | 0.3-0.5 |
| Ph | 8-10 |
| Typical Physical properties | |
| Color | White |
| Brightness (ISO) | 91% +_1% |
| Mean particle size range | 0.8 -2 Microns |
| Viscosity at 70% Brookfield (#3, 100rpm) |
150-300 |