- Granite is a common
and widely occurring type of intrusive, felsic, igneous rock. Granites
are usually medium to coarsely crystalline, occasionally with some
individual crystals larger than the groundmass forming a rock known as
porphyry. Granites can be pink to dark gray or even black, depending on
their chemistry and mineralogy. Outcrops of granite tend to form tors,
and rounded massifs. Granites sometimes occur in circular depressions
surrounded by a range of hills, formed by the metamorphic aureole or
hornfels.
- Granite is nearly
always massive, hard and tough, and it is for this reason it has gained
widespread use as a construction stone. The average density of granite
is 2.75 g·cm-3 with a range of 1.74 g·cm-3 to 2.80 g·cm-3. The word
granite comes from the Latin granum, a grain, in reference to the
coarse-grained structure of such a crystalline rock.
- There are, four
operations that are involved in the processing of granite. They are:
Dressing,Cutting/Sawing,Surface Grinding and Polishing and
Edge-Cutting-Trimming. Mining for granite is done manually. For drilling
and channeling hand chisels and hammers are used. There are very few
quarries that have mining machinery, such as compressors and drilling
machines for drilling and blasting, cranes for lifting big blocks, and
dampers and trucks for transport.
- Granite has been
extensively used as a dimension stone and as flooring tiles in public
and commercial buildings and monuments. With increasing amounts of acid
rain in parts of the world, granite has begun to supplant marble as a
monument material, since it is much more durable. Polished granite is
also a popular choice for kitchen countertops due to its high durability
and aesthetic qualities. Currently 33% of the kitchen countertops being
made are of granite.
- The granite
industries involved in cutting, polishing and finishing have some common
problems. Most problematic of them are related to stains on the finished
products arising out of various factors such as contamination, use of
steel pellets, treatments for the machinery, water quality, the quality
of granite itself, the environmental factors and many others related to
them. The stains on the finished products have a profound effect on
production cost and as a whole on the financial side as the stained
products cannot be marketed or has to be disposed of at a lower price.
Sometimes the pile up of such non-marketable stained products becomes a
problem to the company. The company sometimes incur heavy losses due to
the same.
- Conventional methods
of quarrying granite are becoming increasingly expensive in real and
environmental terms. The existing flame torch is, for example, a slow,
destructive and noisy method of creating slots. In order to overcome the
problems of current equipment, a high pressure water jet slotting device
has been developed, field evaluated and is now in commercial production.
Water jet cutting has also advantage in secondary preparation of
monument stone, where the jets can create straight surfaces and right
angled cuts to an adequate level for final surface
acceptance.
- Accruent, Inc., the
leading provider of contract management solutions, announced today that
it closed $12 million in a new round of funding. Accruent has now raised
more than $35 million in capital since the company's inception in 1995.
- Finland is one of
the major exporters of granite and a world-leader in soapstone
production. The annual turnover of the industry is approx. 200 million
Euro, divided equally between soapstone and granite products. The value
of export is approx. 40% of the turnover. Approx. 200 actively operating
companies are found in the line of natural stone business in Finland,
employing approx. 2000 persons (with spin-off approx. 3000 persons).
- Granites are now
mined in most of the Indian states for use as construction material and
road metal but production of dressed granite blocks and slabs from
Andhra Pradesh, Karnataka, Rajasthan and Tamil Nadu are highly priced.
In India there are 43 granite processing units of which 12 are in Andhra
Pradesh, 13 in Karnataka, 3 in Rajasthan, 14 in Tamil Nadu and 1 in
Orissa.
- The recovery of
marketable grade granite is reported to be 32 to 40 per cent in
Karnataka, 25 to 75 per cent in four quarries around Jalore, the main
granite mining centre of Rajasthan, and 20 to 40 per cent in Tamil Nadu.
Granite exports from India last fiscal were worth Rs 3,018 crore. While
Andhra Pradesh accounted for 35 per cent of exports, Tamil Nadu’ share
was 33 per cent and Karnataka’s 32 per cent.
- Indian granite
industry has been demanding the government to implement the GCDR 1999 in
all States which would make available the required quantum of raw
material to the industry, by liberalising the quarry leasing policy.
- Chinese companies
have the advantage of a liberal policy and are able to lead the market.
The government there gives several incentives
- India leads in the
production of natural Stones with 35342 million tonnes followed by
Chinawith only 31000 tonnes
- India could export
more but China seem to have definite advantage
- China imports
natural stones from several countries, including India, and re-exports
them in the International Market @ prices which the India Stone Industry
cannot compete with .
- China imports
natural stones from several countries, including India, and re-exports
them in the International Market @ prices which the India Stone Industry
cannot compete with .
- In India, at
present import of Granite is not allowed ; Chinese companies import
natural stones from around the world and re-export after value addition
- China exported 16
million tonnes of stone valued at $ 3.04 Billions in 2010 while India
could export only $ 600millions
|
General Introduction
- Granite
Origin
- Granite Aggregate, Sand &
Powder
- Origins and
Sources
- Granite
Collection
- Natural vs.
Synthetic: Granite vs. Zodiaq
- Varieties of
Granite
- Garnet - The Eternal
Decorative Rock Material
- Hard Facts About
Granite
Properties
- Electrical
Resistivity of Some Basalt and Granite Samples From Egypt
- Comparing Granite to
Other
Building Stones
- Granite Physical and
Chemical Properties
- Granite
Properties
- Granite
Technology
- Gainful Utilisation
of Granite Slurry
- Rock Coring
Technology
- Waterjet
Cutting Technology
- A Model for the
Production of Portable Stone Mortars and Bowls
- Pottery production
technology
- Use of High Pressure
Water Jets for Cutting Granite
- Magma Mixing and the
Production of
Compositional Variation within
Granite
Suites
Patent
- Process for Coloring
Granite
- Edging Structure for
Use with Marble or Granite Tile
- Inlaid Granite
Plastic Floor Tile
- Method for
manufacturing simulated granite
- Marble, granite and
stone finishing and abrasive pads therefore
- Simulated
Granite
Products
- Product
Catalog
- Switch plates
- Martin Marietta
Materials - MSDS
- Ashland Paving And
Construction, Inc - MSDS
- Plexiglas
- Granite
Products
- Dutch Boy -
MSDS
- PP4 Black
Granite
Granite Processing
- Granite
Cleaning
- Mining &
Processing
- Granite
Masonry
- Production
Process
- Granite
Slabs
- Dimension Stone
Industry
- Process
Plan for Tiles
Production
- Granite Industry
- General economic
situation in the Country
- White Paper on
Granite Production
- Mineral
Production
- Geological Survey of
Indian and Indian Bureau of Mines
- The Production of
Granite in the New England States
Market
- Re-engineering of
natural stone production chain
- Karnataka set to become largest granite
exporter
- The Natural Stone
and Stone Products Market in EU
- Market Perception
Survey
- Market
Opportunities
- Granite
Trade
- Financial Technology
Sector Transaction News
Company Profiles
- Ann Stones
- Rock Solid
Precision
- Scantling Granite
Ltd
- Suraj Mining
(Granite) Ltd
- Granite Switch
Plates
- Tekmar
- Viglacera Thach Ban Joint Stock Company
- Aankit Granites
Limited
- Akar
Marble Industries
- Kamachi
Granites (P) Limited
- Palar
Granites
- P.G. Industry
Limited
- Suner
Sumangalam Group
- Sunshine Marbles
(India) Pvt. Ltd.
Plant Details
- Granite Finishing
Plant
- Tamin granite
factory
- Marble and Onyx
Products Manufacturing Unit
- Granite
Falls
- Katti-Ma Group
- Lecon
Engineering
- Mining in
Newfoundland and Labrador
- Dimension Stone in Namibia
- Afrika National
Granite
|
Project Profiles
- Flooring
Tiles
- Granite Tiles
Unit
- Marble Processing
Plant
- Marble Processing
Unit
- Marble
Tiles
- Granite Processing
Unit
- Marble & Granite
Warehouse
- Investment and
Technology Promotion Branch
- Smolt
Condition and Timing of Arrival At Lower Granite
Reservoir
Applications
- Granite
Applications
- Countertop
Applications
- Uses of
granite
- Economic uses of
granite
- Interesting Uses of
Stone in Virginia
- Applications
- Popular Uses of
Granite Tile for Flooring and Countertops
- Special Uses
- Uses of
Granite
- Applications of
Granite
Machinery
- US Granite
- Granite Processing Machinery
- Mlshah
- Machinery & Equipment
- Granite Cutting
Machines Manufacturers & Suppliers
- Machine and Parts
for Processing Granite
Exporters and Suppliers
- Aro Granite
Industries Ltd.
- Whole Sale Granite Tops
- Ashish
Impex
- Village Craft
International
- Diaamond
Granites
- Eurroexport
- Indian Exporters,
Manufacturers & Suppliers
- Arvicon
International
- Granite
Exporters
- Granite
Manufacturers & Suppliers
- Rashi Granites
- Granite
Suppliers
- Suppliers
Directory
- Suppliers
Buyers
- Importers
- Foreign Importers & Buyers
- Buyers List -
1
- Buyers List -
2
- Buyers list -
3
Standards and Policy
- Certification and
Industry Standards
- ASTM International
Standards
- Testing Standards For Granite And
Dimensional Stones
- Granite Conservation
and Development Rules
- Ministry of
Coal and Mines
- Forms
- Granite Policy
- Private
Participation in Mining Sector
- Mineral Law and
Policy
Health Hazards
- Hazards Associated with Transporting Granite and Marble
Slabs
- Occupational
Pneumoconiosis and Tuberculosis
- Hyderabad granite has radioactive uranium
- Granite weathering,
slope instability and associated hazards
- Granite-mining fight may go to court
Reports
- Financial
Statements
- Granite Annual
Report
- Ban on granite mining causes royalty losses
- Focus on Granite and
Granite Industry
- Drilling Report on
the Granite Basin Property
- Characteristics of
the Marble Industry in Egypt
- Natural Stone
Development in Finland
- Preliminary Report
on the Little Granite’ Mine
- Mining and
Quarrying
- Products on New York
Mines
Consultants
- Ceramic Tile and
Stone Consultants, Inc.
- AA Marble
& Granite
- Bjørn
Gullik
- Red River
Granite
- RJM
Consultants
- Star Granite Company
- Whitmore Granite
& Marble
Video Links
- Marble and Granite
Video Gallery
- Granite Video
Links
- Audio and Video
Links
Order the CD ROM
Today |