Dead burned magnesite 97% is a chemical substance, which means that when magnesite is calcined at 1800C, carbon dioxide completely escapes, and magnesium oxide forms a dense block of periclase. This dead burned magnesite has a high degree of fire resistance. Its main component is magnesia, which is made of natural special magnesite magnesia through flotation purification, light burning, fine grinding, high pressure ball pressing, and ultra high temperature oil shaft kiln calcination.
Application: Dead burned magnesite 97% are made from sorted super grade natural magnesite through sections including float concentration, calcination, fine grinding, high pressure briquetting and ultra high temperature sintering in heavy oil shaft kilns. They are good quality materials for making magnesia bricks and monolithic refractories.
Packing: Jumbo bag(or according to the customer requirement)
When naturally occurring magnesium carbonate(magnesite) is fired at around 800-1500 it becomes what is known as ''caustic calcined magnesite''. The resulting magnesium oxide grains have the outer form of the magnesium carbonate and depending on the firing temperature are porous and more or less reactive due to their large inner surface area. It's also called industrial grade caustic calcined magnesite
Application: In the production of magnesium salt, MgO oxide is used as raw material to react with acid. In Refractory, Mgo is used as the Refractory of crucibles. In energy plants, MgO is used to remove sulfur trioxide that are harmful to plants and the environment. In the rubber and plastic industry, Mgo is used as Filler, acid acceptor, anti-coking component and curing acid.
Packing: 50kg pp bag with PE coating outside/ PE inner bag, 1250kg Jumbo bag.
Calcined Bauxite is obtained by calcining (heating) superior grade Bauxite at high temperature (from 850 oC to 1600 oC). This removes moisture thereby increasing the alumina content. Compared to an alumina content of about 57 % to 58 % in raw Bauxite, Calcined Bauxite has an alumina content of 82 % to 86 %. The heating is carried out in rotary kilns. Calcination is done at different temperatures ranging from 850 oC to 1600 oC depending upon the customer’s application.
We export Calcined Bauxite for various applications such as refractory bricks, abrasives, steel polishing, etc. We provide consistency in quality and availability of Calcined Bauxite at extremely competitive prices.
Applications of Calcined Bauxite:
Refractory Grade Calcined Bauxite (CB - I and CB - II Grade) : To make refractory grade, Bauxite is thermally treated at 1600 oC to produce Calcined Bauxite where the Alumina content is mostly above 82%.
Brown Fused Alumina, Proppants and Road Surfacing : To make the above grades, Bauxite is thermally treated at 1000 oC - 1200 oC to produce Calcined Bauxite where the Alumina content is anywhere between 80-88% depending on the requirement.
Calcined Kaolin is a product developed after calcination of high purity of kaolin clay at medium to high temperatures depending on end applications for its customers Calcined Kaolin's has the most widely use in various applications worldwide.
Product Specification
Grade Name PI- 9.1 PI- 0.15 PI- 1.15 PI- 2.15 PI- Glow PI- Glitter
POW.BR(%)(ISO) 91±1 92±1 93±1 94±1 94±1 95±1
BULK Density(GMS/LIT) 330-360 330-340 320-340 280-380 280-320 280-300
RESIDUE-(500#) 0.2%(400#) 0.2% MAX 0.2% MAX 0.2% MAX 0.2% MAX 0.2% MAX
%BELOW 2 MICRON 60-65 60-67 67-75 67-75 80-85 80-90
%L.O.I 0.5 MAX 0.5 MAX 0.5 MAX 0.5 MAX 0.5 MAX 0.5 MAX
Dead Burned Magnesite is with high density and low reactivity, widely used for production of refractory bricks, monolithic mixes and direct usage in a steel plant aggregates.
Physical and Chemical Specifications
Items MgO%> SiO2%< CaO%< lgL%< B.D>(g/cm3) Grain Size (mm)
DBM-95 95 2.50 1.80 0.30 3.18 0 - 30
DBM-94 94 2.50 2.00 0.30 3.18 0 - 40
DBM-92 92 3.50 2.00 0.30 3.15 All kinds of sizes
DBM-91 91 4.00 2.00 0.30 3.15 All kinds of sizes
DBM-90 90 4.50 2.50 0.30 3.13 All kinds of sizes
DBM-89 89 4.80 2.70 0.50 3.10 All kinds of sizes
Bricks made with Dead Burnt Magnesite or Magnesia (DBM) are an important category of basic refractoriness as it has the highest melting point i.e. 28000C, among all basic refractoriness. Magnetite bricks are characterized by good resistance to basic slag as well as low vulnerability to attack by iron oxide and alkalis. They are widely used in applications such as glass tank checkers, as sub hearth brick for electric arc furnaces and as back up lining in basic oxygen furnaces. Magnetite compositions are also widely used in ladle slide gate & gas purging refractories. Magnesite in combination with chrome, spinel and carbon is also used for various applications.
