Rajveer Minerals & Marble

Ambaji, Banaskantha, Gujarat

Calcium Carbonate Lumps, Powder

Calcite is a calcium carbonate mineral (minerals containing CO3) that is usually white. It is one

of the most important minerals in the world and is extremely common. It can be found in the

three main types of rocks (sedimentary, metamorphic and igneous rocks) and, in the form of

marble or limestone, makes up much of the Earths crust. Calcite is one of the main minerals in

limestone, marble and shells of marine species. Interestingly, calcite has more practical uses than

most other minerals in the world. It has the same chemical formula as other types of calcium

carbonate, such as limestone, marble and chalk: CaCO3. It comes in bright white color and it has

nodular particle size with strong crystal structure.

The common features are as follows:-

· Rapid and complete dispersion

· Very Low abrassion at high loading

· Very low moisture content

· Good compatibility with polymers and other additives

· Better impact strength of polymer compound as compared to uncoated material

APPLICATIONS:-

· As a formation bridging and filter-cake sealing agent in drilling fluids.

· As a weighting material to increase the density of drilling fluids, to control downhole

pressures.

· As an extender in paints, especially in matte emulsion paints.

· As a filler in plastics (example - 15 to 20% loading of chalk in PVC drain pipe) as well as

thermosetting resins.

· In a wide range of trade and DIY adhesives, sealants, and decorating fillers.

· In setting stained glass windows, along with putty.

· As a resist to prevent glass from sticking to kiln shelves when firing glazes and paints at

high temperature.

· As a common ingredient for many glazes, in ceramics/glazing applications.

· In the production of glossy paper, replacing kaolin.

· For the purpose of purifying iron steel materials, in a blast furnace, from iron ore.

· As a building material in its own right (like marble) or limestone aggregate for the

purpose of road-building and construction.

· For making mortar, which is used in bonding bricks, concrete blocks, stones and tiles.

· As a filler material for latex gloves, as precipitated Calcium carbonate (pre-dispersed in

slurry form).

· As a major component of blackboard chalk.

· As an inert filler for tablets and other pharmaceuticals.

· As a pH corrector in swimming pools, for maintaining alkalinity buffer to offset the

acidic properties of the disinfectant agent.

· In the production of toothpaste.

· Environmental uses.

China clay

Rocks that are rich in kaolinite are known as Kaoling, kaolin, Kalaba or china clay. China Clay falls under Kaolinite group of clays. It has the usual compositions of Al2O3, 2SiO2, 2H2O, Hydrous Aluminium Silicate. China Clay mining is a complicated process which can be split into three distinct sections opencast mining, refining and drying. China Clay occurs in the deposits of rock china clay, a mixture of up to 15 percent China Clay, and up to 10 per cent mica, and the remainder being quartz. The clay itself varies considerably from pit to pit. In some deposits, the clay is ideally suited for the filling and coating of paper, while in other deposits, other gradess China clay suits best. China clay has a low shrink-swell capacity and a low cation exchange capacity (1-15 meq/100g). It is a soft, earthy, usually white mineral (dioctahedral phyllosilicate clay), produced by the chemical weathering of aluminium silicate minerals like feldspar. China clay is available in the form of lumps and powder (Pure white colour, off white colour and calcined powder).

· Low shrink swell capacity at 1300C is about 12%

· Lowcation exchange capacity (1-15 meq/100g

· High luster, opacity, gloss

· High mechanical strength

· Dimensionally stable

· Improved electrical properties

· High extrusion properties

· Anti cracking

Applications:-

Paints :- It is used in various paints like distempers, cement primer, wood primer, texture paint, spray plaster, putties, fillers undercoats.

 · China clay due to its lamellar structure imparts toughness to coatings and tends to reinforce the films.

 · It settles slowly in water and having low solubility in water, it is commonly used in water based paints.

 · Due to its low solubility in the aqueous phase and its ability to impart good brushing and leveling characteristics, it is mainly used in latex paints.

Adhesives Sealants

In adhesives sealants, china clay gives good barrier effects and rheology control. The controlling rheology influences the speed at which adhesive can be applied which is important in high speed paper laminating processes. The low surface hydroxyl content of calcined China clay leads to a low moisture pick-up, resulting in excellent performance in moisture sensitive sealant applications. Calcined clay is also effective as structure building components.

Plastic

 It is used as a filler in combination with others to impart strength smoothness in plastic Industry for PE master batch; PE cables; PE film; PVC cables; PVC extrusions; PVC plastisols; PP moldings; polyamide moldings; PBT/PET moldings; unsaturated polyester; urea formaldehyde; phenol formaldehyde.

Ceramics

China Clay is also called KAOLINE, it is one of the essential Raw materials for ceramic Industries. China Clay does not swell on adding water Alumina present in Clay do not form

Isomorphous series with any other metallic compound. It is naturally hydrated Aluminum Silicate and is one of the most abundantly available clay in the Earth's crust. China Clay is the heart of potteries, tiles, ceramics, Glazes and many other industries.

Glass

The China Clay can be effectively used in manufacturing of fiber glass because of its high alumina content.

Paper

It is used in variety of papers, cardboards, hard boards and others.

Rubber

Grit free china clay having low bulk density, possessing reinforcing properties, is used as filler and to improve tensile, flexural modules make a significant increase.

Electrical Industry

It is used for Electrical insulation, High voltage insulation components, electrical wires, EPDN rubber and others.

Cosmetics Soap

China Clay is used in toothpaste, cosmetics and soap industry.

Other uses

China clay is used in white cement, Refractory bricks and in port, it acts as fog removing agent, dust collecting agent on road and fireproof agent of textile.

Quartz (Silica SiO2) is the most common mineral in the Earths crust. Quartz is found in

sandstones, pegmatites granites, and other igneous rocks. It forms veins in the cracks of rocks.

There is a lot of heat and water where they form. Crystals are made when the quartz cools down.

The way the crystal looks depends on how hot it was when it was formed. It can be found in

layers or geodes, too. Geodes are hollow rocks that are lined with crystals. It has a hexagonal

crystal structure and is made of trigonal crystallized silica. It is most varied in terms of varieties,

colors and forms. Of all the minerals, quartz is closest to a pure chemical compound and has

constant physical properties.

It is hard, chemically inert and has a high melting point, attributable to the strength of the bonds

between the atoms and extremely resistant to weathering. These are prized qualities in

applications like foundries and filtration systems. Quartz may be transparent to translucent and

has a vitreous luster, hence it is used in glass and ceramics. Quartzs strength, silicon dioxide

contribution and non-reactive properties make it an indispensable ingredient in the production of

thousands of everyday products.

We supply Quartz in Lumps, grits/Sands and powder forms for various industrial

applications:-

Quartz sand/grains in Glass Industry:-

Quartz is commonly known as silica sand for producing float glass, fiber glass, automotive glass,

clear container glass, Borosil glass and other types. We produce quartz powder for high purity

glass having extremely low levels of contaminating metal oxides, and other foreign particles with

the help of heavy magnetic separators used in mesh 25 to 32 or in mm size 0.1mm-0.3mm,

0.3mm - 1.2mm, 0.5mm-0.1mm, 1.2mm - 0.3mm.

Fused Quartz (Silica glass), vitreous silica glass: silica (SiO2) is used for very special

applications and has very low thermal expansion, is very hard and resists high temperatures

(1000 1500 C). It is also the most resistant against weathering (alkali ions leaching out of the

glass, while staining it). It is used for high temperature applications such as furnace tubes,

melting crucibles, Flat glass, Automotive Glass Hollow Glass (e.g. Thermal expansion, hardness,

specific gravity).

Silica Sand

Silicon and oxygen are the earth's two most abundant elements and together they make silica,

one of the earth's three most common rock forming minerals.

Silica occurs in three main crystalline forms. The principal occurrence is as the mineral quartz

but it also occurs in other rarer mineral forms known as tridymite and cristobalite. It is a very

durable mineral resistant to heat and chemical attack and it is these properties that have made it

industrially interesting to man.

The first industrial uses of crystalline silica were probably related to metallurgical and glass

making activities a few thousand years BC. It has continued to support human development

throughout history, being a key raw material in the industrial revolution especially in the glass,

foundry and ceramics industries. Silica contributes to today's information technology revolution

being used in the plastics of computer mouses and providing the raw material for silicon chips.

For industrial use, pure deposits of silica sand capable of yielding products of at least 95% silica

are required. Often much higher purity values are needed.

Uses of Silica Sand

The main end uses of silica sand are:

Glass

Silica is the major ingredient in virtually all types of glass. The principal glass products include

containers (bottles and jars), flat glass (windows, mirrors, vehicle glazing etc.), lighting glass

(light bulbs, fluorescent tubes, etc.), tableware (lead crystal, drinking glasses etc.), TV tubes and

screens, decorative glass, fibreglass, optical glass and vacuum flasks.

Foundry casting

Silica has a high melting point, 1610 degrees C. This enables castings to be produced by pouring

molten metal into moulds made out of silica sand.

Ceramics

Silica that has been ground to fine size is an ingredient of most clay bodies and is a major

constituent of ceramic glazes. Typical everyday products include tableware, sanitary ware,

ornaments and wall and floor tiles.

Filtration

Closely sized grades of silica sand is the principal filtration medium used by the water industry

to extract solids from wastewater.

Specialist building applications

The construction industry is founded on silica and there are a host of specialist applications

including silica and aerated concrete blocks, floor and roof tiles, flooring and rendering

compounds, white line markings, roofing felt and cement and resin injection systems.

Sports and leisure

Silica sand is used for equestrian surfaces, in artificial turf, golf course root zones and dressings,

football and cricket and other pitches and as play sands.

Other users

Silica has many other applications including the manufacture of chemicals and metals, fillers in

numerous products, plastic and otherwise, the manufacture of refractories, stimulating oil

production and as additives in agricultural and horticultural products. It is difficult to imagine a

life without silica!

Production of silica sand

High grade silica sand is usually found as unconsolidated deposits below thin layers of soil and

overburden. After quarrying, the sand often undergoes considerable processing before sale. The

processing may include washing and cleaning of the grains, sizing to remove coarse and very

fine fractions, and physical and chemical processes to remove iron, chromium and other

deleterious minerals. After processing, the sand may be dried and some applications require it to

be ground in ball mills to produce very fine material

Marble

Marble is a non-foliated, granular metamorphic rock. That is formed by the metamorphism of limestone and dolostone. In the global market Marble is one of the seven natural stones which have a massive demand. Marble has long been highly valued for its beauty & strength; Marbles are suitable for both interior and exterior applications. Construction marble is a stone which is composed of calcite, dolomite or serpentine which is capable of taking a polish. It adds grace tothe appearance of floors, walls, table tops etc. It radiates an aura of fabulous charm in the ambience of a monument. Marble brings a touch of gleaming charm, prosperity and delight in residential & commercial complexes through its imperial magnificent look.

Marble floor tiles are also used for both interior and exterior flooring applications. Marble tiles are used for bathrooms, entrances and fireplaces, living & dining areas. Some of the different colors of marble are white, red, green, pink, grey, mottled and banded. We are the suppliers & exporter of marble tiles, marble slab, white marble, marble floor tiles. Marble is available in Polished & Tumbled finish.