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QUALITY CONTROL MEASURES

1

Samples retained every 2 hours from each mill for PSD Analysis, whiteness & brightness monitoring, moisture content, DOP oil absorption

2

Machine parameters monitored and recorded in conjunction with the sampling process

3

Each pallet of goods is given a lot number with a sample retained in lab for future reference

4

Available packaging: 25kg Paper bags, 600kg Jumbo bags, 1.25MT Jumbo bags

OPERATION WORKFLOW

1
Quarry Operation and Preparation of Feed Materials
1.1

Blasting of limestone quarry (Major blasting once a year followed by minor blasting every 2 months)

1.2

6"x 9" limestone blocks being transferred to another crushing plant for washing and chipping into 40-60mm limestone chips. The limestone chips are delivered to our covered storage area with minimum inventory level of 10,000MT

1.3

6"x 9" limestone blocks being transferred to another crushing plant for washing and chipping into 40–60mm limestone chips

1.4

40–60mm limestone chips delivered to Zantat and stored in covered area with minimum inventory level of 10,000 tons

2
Production of Uncoated and Coated Calcium Carbonate Powder
2.1

40–60mm limestone chips fed into conveyor for first stage of visual inspection and removal of unwanted materials/ impurities before entering 300 ton storage hopper

2.2

40–60mm limestone chips fed into conveyor for second stage of visual inspection and removal of unwante d materials/impurities before entering hammer mill

2.3

Hammer mill processes the 40–60mm limestone chips into aggregates of 97% below 10mm

2.4

10mm aggregate fed into individual mills for grinding and classifying into uncoated/natural Calcium Carbonate powder of various grades

Finished product: Uncoated/
Natural Calcium Carbonate Powder

3
Stearic Acid Coating Process of Uncoated/
Natural Calcium Carbonate Powder
3.1

Stearic acid is melted and filtered before going through atomization process

Finished product:
Stearic acid Coated Calcium Carbonate

4
Production of Calcium Carbonate Dispersion
4.1

Mixing and deagglomeration of uncoated/ natural Calcium Carbonate with dispersant and other chemical additives.

4.2

Visual inspection and removal of impurities

4.3

Wet milling process

4.4

Samples retained every 2 hours from each mill for PSD Analysis, viscosity, whiteness & brightness monitoring

4.5

Machine parameters monitored and recorded in conjunction with the sampling process

4.6

Every packing is labelled with serial number, weight and manufacturing date

4.7

Finished goods:
Calcium Carbonate Dispersion

Available packaging: 275kg and 300kg Metal drums, 1200kg and 1500kg IBC tanks, Bulk tankers