Manufacturers of calcium carbonate, Suppliers of calcium carbonate, Production of paper grade calcium carbonate

Technology

Calcium Carbonate is chemically known as CaCO₃. It is manufactured via a series of controlled chemical reactions. Generally, quicklime (CaO) is mixed with water to form a slurry and carbon dioxide gas is added. The resulting reaction produces a very fine precipitated calcium carbonate (CaCO₃). This PCC can be shipped in slurry form or dried and packaged. Only high purity lime stones are used as raw material for all grades of products. Precipitated Calcium Carbonate is used in applications that demand exacting specifications of particle size, particle size distribution and physical color. The Activation of Stearic Acid is carried out on CaCO₃ for the specific requirement of the user.

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Chemical Analysis

Following is the common analysis of all the grades which are controlled by meticulous processing conditions as well as selection of raw materials.

Parameter	Value
Color	Bright White
Solution in Hydrochloric Acid 5N	Clear
Soluble Alkali (as Na₂O) as per IS:918-1968	Less than 0.2%
pH	9.8+0.5
Iron, Fe-max.	0.01%
Manganese, Mn – max	0.003%
Fluoride, F - max.	0.05%
Phosphate, PO₄ – max.	0.07%
Sulphate SO₄ – max.	0.25%
Silica, SiO₂ – max.	0.075%
Aluminium, Iron, Phosphates and matter insoluble in Hydrochloric Acid as per IS:918-1968 – max.	0.5%
Magnesia, MgO – max.	0.5%
Lead, Pb – max.	10 p.p.m.
Copper, Cu – max.	5 p.p.m.
Arsenic, As – max.	2 p.p.m.
Chloride, Cl	Trace
Calcium Carbonate, CaCO₃ – min. (Test method as in IS:918 – 1968)	98.5%
Specific Gravity	2.65 to 2.8
Loss on Drying at 105^oC(%)	0.5 to 0.8
All percentages on weight basis

Grades & Applications
of Calcium Carbonate manufactured by Gulshan

Gul-Cal F

When 85% of Paper Industry World Over Has Switched over to New Generation PCC used as Filler. Why Not You ?

THE FUNCTIONAL FILLER - PCC

PROPERTIES		(Sedigraph)
Brightness (dry)	97(±1)
Einlenhner Abrasion	<7mg
pH	10.2(±.5)
Mean Particle Size	1.3µ

ACHIEVE

HIGHER BRIGHTNESS

HIGHER OPACITY

HIGHER BULK

SAVING IN FIBERS

Gul-Cal - F has been used in commercial paper production in India for over two years, resulting in brighter paper, higher opacity and reduced costs.

For any other further query please contact

Director (Marketing)
Gulshan Sugars & Chemicals Ltd.
G-81, Preet Vihar Delhi 110092
Ph: 22514751/22517808
Fax: 22529848
E Mail: gscldelhi@gulshanindia.com

For Trade Enquiries, please mail to akvats@gulshanindia.com

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