Chromite is an oxide of Iron and chromium, has a chemical composition FeOCr2O3. However, Chromite conforming to theoretical composition is rarely found in the nature. Iron is found replaced by magnesium and similarly chromium by ferric iron and aluminum, thus bringing the composition of the naturally occurring Chromite corresponding to Fe MgO Al Fe Cr 2O3. it is this replacement that improves the Fe : Cr ratio in Chromite.
Chromite is high refractory and non-wetting material suitable for molding, core making and other high temperature application. NAVBHAN market Chromite of the following composition.
Applications :
Ferro-chrome alloy,
Chrome refractory bricks,
Chromate Chemicals
Mould coats,
Core washes,
Mould and cores,
Furnace linings.
Our Atomized Chromite Beneficiating plant situated at ORISSA and is surrounded by Chromite Mines. The plants capacity is 3000Mts. Per month.
KYANITE is the allotropic varieties of metamorphic mineral corresponding Al2O3 and SiO2 they form useful Alumino-Silicate superduty refractory material. Kyanite when heated above 16500 C it convert into mullite (3Al2O3. 2SiO2) which has high refractory properties and high strength.
The Kyanite after calcinations increases in volume to about 20% the calcined Kyanite acts on an admissive in refractory industries, glass and porcelain industry.
Applications : KYANITE is used in refractory Ceramic Industries High-tension insulator cell castings
Kyanite can be supplied in the form of lumps ranging from 10mm to 40mm or in the form of powder upto 200mesh. Packed in 1-2Mt jumbo bags as per users specifications. Future plan : We have plan to install the KILN for producing Mullite.
The material which has remarkable usage as an abrasive which is far more economical than the conventional abrasives. The product is offered under the name of NAVGRIT with the following specifications
The Company processes this GRIT from mineralogical residues is marketed under the name NAVGRIT. This product which underwent systematic tests in the Mechanical Engineering Laboratory of Premier Scientific Institution. The Indian Institute of Science has come out with outstanding results as an abrasive and approved.
OLIVINE is a natural mineral consisting of magnesium Iron orthro silicate with the following properties:- A high melting point, high relative density and high magnesium content and is basic in nature.
OLIVINE is a good substituting in compared to the other sands in overall reduction in cost and can be recycled.
OLIVINE is environmental friendly as there is no free silica available.
Applications :
As the mould material for moulds and cores
As a refractory to make forsterite bricks, blocks and sleeves
As a mould coat in steel foundries and manganese steel foundries.
As an Abrasive in sand blast to clean the metal surface
As a Tap Hole Filler in steel melting furnaces
As a slag conditioner it reduces emission of Co2 and energy saving
Molten Metal Filters also called, as ceramic filters have become an indispensable part of the casting technology in the present day contest. These filters find optimum use of aluminum casting, gray iron casting and nodular casting with a temperature of withstanding capacity of 1480 C. Also greater emphasis is being made by designers to reduce the casting weight which is becoming a global demand. To achieve this wall thickness of the casting has to be reduced. Further more the high cutting speeds also require increasingly higher casting quality. This means that the customer requirements in terms of low weight, resulting in cost savings with defect free castings are becoming ever demanding. The thinner wall castings are more sensitive compared to thick wall castings causing serious damage with subjected to high stress. Improving the casting quality is by use of clean melt. Any non-metallic inclusion represents weaking of the cross section of the casting resulting in high stress build up. This inclusion not only has an impact on the high tool wear rate but also results in customer dissatisfaction/Complaints.
Exothermic and insulating linings for feeder cavities substantially extend the solidification time of the feeder, leading to very effective feeding, reduction/elimination of shrinkage porosity, desirable thermal gradients in the casting and increase in percentage yield.
Navbhan makes exothermic sleeves suitable for cylindrical feeder cavities of varying sizes. These sleeves are prepared by vacuum molding of selected oxides and metallic powders.
Insulating sleeves serve the same function but through their low thermal conductivity. Through the use of exothermic sleeves and insulating sleeves you can make feeders about a third the size of a normal feeder. This is a sure way to increase profitabilit.
FUSED SILICA is made by converting high-purity crystalline silica silicon dioxide SiO2 to an amorphous form through the use of very high temperature Amorphous silica combines unique properties.
High thermal resistance
Very low thermal expansion
High resistance to molten metals
Excellent refractoriness
FUSED SILICA grains and powders are designed for foundry, refractory, investment casting and other special applications.
Navbhan Olivgrit is becoming increasingly popular for blast cleaning. The Olivgrit Sand incorporates a number of properties which make it suitable for use as blasting sand, angular grain, high specific gravity, high degree of hardness and resistance to disintegration and a further important consideration is that Olivgrit dust does not cause silicosis as does quartz. Owing to the danger of silicosis, quartz sand is prohibited in several countries, such as the Netherlands, Sweden and Britain. In internationally a gradual change - over to other blasting agents, amongst them Olivgrit can be observed.
Spraytech Maharashtra Manufacturer and supplier of filtration systems like basket filters, self cleaning filters, sand filters, lube oil filters, compressed air filters, panel type air filters, bag filters, simplex basket filters and duplex basket filters.
Sameer Sales Corporation Dealing and supplying of pipeline filters such as stainless steel pipeline filters, fabricated pipeline filters, industrial pipeline filters, compressed pipeline filters, air pipeline filters, aluminum pipeline filters and high pressure pipeline filters.
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