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Red Lead

Gravita India Ltd. is a leading red lead manufacturer with a technologically advanced facility for efficient production and global supply of red lead powder. Red lead, known for its bright red to orange-red appearance, is used in various industries, including lead glass and red pigments. Notably, it safeguards iron and steel from rusting as paint. Chemically, red lead is lead tetroxide (Pb3O4), prepared by oxidising metallic lead or litharge (lead monoxide).

Red Lead

Red lead primer is one of the oldest and most commonly used anti-corrosion pigments. It has been historically used on bridges and steel structures for protection. Its remarkable resistance to saltwater makes it ideal for ship hulls and decks.

While virtually insoluble in water and alcohol, red lead dissolves in stomach acid, making it toxic when ingested. It can be dissolved in hydrochloric acid, glacial acetic acid, and diluted nitric acid with hydrogen peroxide.

Uses of Red Lead

  • Ceramics
  • Lead acid batteries
  • Pigments
  • Lead glass
  • Fluorescent tubes
  • Heat proof glasses
  • Optical glasses
  • Explosives

In our red lead manufacturing plant, we begin with a Barton plant to produce massicot. The necessary input is refined lead ingots with a minimum purity of 99.97%. The Barton plant output then moves to the red lead furnace, where it is accompanied by various equipment, including a dust collection plant, conveyors, grinder, cyclone-bag-house filtration unit arrangements, and finally, it is packed and stored.

Red Lead Typical Specifications:

ATTRIBUTE

RED LEAD

 

JOINTING GRADE

SETTING GRADE

NON-SETTING GRADE

Colour

Orange Red to Brick Red

Orange Red to Brick Red

Brilliant Orange Red to Brick Red

Crystal Structure

Spinal Structure

Spinal Structure

Spinal Structure

Thermal Stability

500 ° C

500 ° C

500 ° C

Specific Gravity

9.1

9.1

9.1

Retention on 240 mesh IS Sieve(63 micron) (max %)

0.25

0.15

0.15

Apparent Density (Scott) gm/cc

1.6 to 1.8

1.3 to 1.6

1.2 to 1.3

Matter soluble in water (in %)

0.3

0.3

0.3

Water Absorption mg/gm

90 to 100

90 to 110

100 to 110

Acid Absorption mg/gm

160 to 170

150 to 160

130 to 150

Volatile Matter at 105°C (in %)

0.2

0.2

0.2

Oil Absorption %

6-7

6-7

6-7

Free Lead (% Max)

Traces

Traces

Traces

PbO2 (in %)

15.1 to 25.1

25.2 to 33.2

33.3 and above

Pb3O4

43.0 to 72.0

72.1 to 95.0

95.1 and above

Total Lead Oxide

99.5

99.5

99.5

Uses

Boiler & Water Pipeline

Lead Acid Batteries
Heat proof glasses Ceramics
Optical glasses
Fluorescent tubes

Surface coating
Storage batteries
Ceramics
Rubber & plastics

Moisture Content (% Max)

0.05

0.05

0.05

Purity (% Min)

99.97

99.97

99.97

Click here to download the product specifications