Refractory Grade Calcined Bauxite

Refractory Grade Calcined Bauxite

Rawmin's Refractory Grade Calcined Bauxite is manufactured from the world's finest quality of Bauxite - the Guyanese Origin Bonasika Washed Bauxite Ore and is available in two different variants :
- RAWMIN SUPREME
- RAWMIN SELECT

Rawmin stands at the forefront of the industry, employing state-of-the-art technology to manufacture this exceptional product using Rotary Kiln. The Guyanese Origin Bonasika Washed Bauxite Ore, renowned for its purity and exceptional properties, serves as the raw material for our Refractory Grade Calcined Bauxite. Boasting a remarkably high alumina content, coupled with minimal iron and impurities, high bulk density and low apparent porosity, our product is most suitable for producing top-tier Refractory Bricks or Castable Monoliths.

The low iron content enhances the product's durability, contributes to improved thermal performance, mechanical strength, corrosion resistance, and overall durability in various high-temperature applications, ensuring the longevity and stability of the refractory lining. It is an ideal choice for applications where purity and strength are paramount. Rawmin's Refractory Grade Calcined Bauxite has high bulk density and low porosity and both variants are well-suited for demanding applications in industries such as metallurgy, ceramics, and glass manufacturing.

Our Rotary Kiln technology enables us to achieve a level of purity and consistency that exceeds industry benchmarks. Continuous quality control measures are in place at every stage, ensuring that each batch of Refractory Grade Calcined Bauxite leaving our facility is of the highest caliber. While traditional Calcined Bauxite may suffice for some applications, Rawmin's Refractory Grade Calcined Bauxite in both variants have exceptional characteristics, make it a premium choice, offering longevity, reliability, and superior performance in demanding industrial environments. The upfront investment in this high-quality material pays dividends over time through extended service life and reduced maintenance costs, justifying its higher initial costs.

Standard Specifications and Technical Parameters for RAWMIN SUPREME and RAWMIN SELECT are as follows:

RAWMIN SUPREME

GENERAL PROPERTIES

CALCINATION TEMPERATURE : 1650 °C
GRAIN SIZE : 0 - 40 mm

CHEMICAL ANALYSIS %

	RANGE	TYPICAL VALUE	TEST PROCEDURE
Aluminium Oxide (Al2O3)	90.00 - 91.00	90.50	IS 12107 Part 3
Iron/Ferric oxide (Fe2O3)	0.75 - 1.00	0.85	IS 12107 Part 6
Silicon Dioxide (SiO2)	3.00 - 5.00	3.50	IS 12107 Part 2
Calcium Oxide (CaO)	0.25 - 1.00	0.30	IS 12107 Part 8
Titanium Oxide (TiO2)	3.00 - 4.00	3.50	IS 12107 Part 5
Loss on Ignition & Moisture (LOI)	-	Nill	IS 12107 Part 1

PHYSICAL PROPERTIES

	RANGE	TYPICAL VALUE	TEST PROCEDURE
Dry Bulk Density, g/cc After drying at 110 0C / 24 hrs	3.10 - 3.25	3.15	ASTM C 357-07
Apparent Porosity %	9.00 - 10.00	9.50	ASTM C 357-07
Pyrometric Cone Equivalent (PCE)	Above Orton Cone 32	(>1717 °C)

RAWMIN SELECT

GENERAL PROPERTIES

CALCINATION TEMPERATURE : 1650 °C
GRAIN SIZE : 0 - 40 mm

CHEMICAL ANALYSIS %

	RANGE	TYPICAL VALUE	TEST PROCEDURE
Aluminium Oxide (Al2O3)	86.00 - 88.00	87.00	IS 12107 Part 3
Iron/Ferric oxide (Fe2O3)	2.00 - 2.50	0.85	IS 12107 Part 6
Silicon Dioxide (SiO2)	5.00 - 7.00	5.50	IS 12107 Part 2
Calcium Oxide (CaO)	0.25 - 2.00	1.00	IS 12107 Part 8
Titanium Oxide (TiO2)	3.00 - 4.00	3.50	IS 12107 Part 5
Loss on Ignition & Moisture (LOI)	Nill	Nill	IS 12107 Part 1

PHYSICAL PROPERTIES

	RANGE	TYPICAL VALUE	TEST PROCEDURE
Dry Bulk Density, g/cc After drying at 110 0C / 24 hrs	3.20 - 3.30	3.15	ASTM C 357-07
Apparent Porosity %	9 - 10	9.5	ASTM C 357-07
Pyrometric Cone Equivalent (PCE)	Above Orton Cone 32	(>1717 °C)

In addition to the above, Rawmin specialises in supplying VARIED GRADES of Highest Quality of Refractory Grade Calcined Bauxite in DESIRED GRAIN SIZES consistently as per BESPOKE REQUIREMENTS of its customers and backed up by excellent quality control, logistics and shipping support.