CACO3 Presentation

7/31/2019 CACO3 Presentation

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General Info

Calcium carbonate, or CaCO3, comprisesmore than 4% of the earths crust and is

found throughout the world.

Limestone

Chalk Other sedimentary sources

Marble

Dolomite

Huntite Crystal forms are calcite, aragonite, and

vaterite


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Properties


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Properties and Application

Used as a filler in plastic, paints, and

coating due to its special white color

(coating pigment)

Paper is coated to improve itsbrightness, opacity, print-ability, ink

receptivity, and smoothness.

Provides improvements in modulus, heatresistance, hardness, shrinkage

reduction, and color fastness of plastic


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Increased loadings of calcium carbonate

in thermosets reduce cost and provide

better surface characteristics Used in paints to extend and enhance

the use of titanium dioxide.

Widely as an effective dietary calciumsupplement, antacid, phosphate binder,

or base material for medicinal tablets.

Used as mild abrasive in toothpaste Used as builder in detergent composition


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Building material in construction, also

an ingredient of cement. property of double refraction is a

feature valuable to a number of

optical applications.


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Processing of GCC

best deposits for most industrial applicationsare those having a high (90% CaCO3) purityand high brightness.

Primary crushing in the jaw crusher.

Secondary crushing using cone crusher toproduce about 4cm product.

Final grinding using ball mill or roller mill to

produce about 5 microns product. Products finer that 10 microns requires

additional processing in dry ball mill circuitwith air clarification.


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Processing of PCC

Limestone is calcined in a kiln to obtain carbon

dioxide and quicklime.

The quicklime is mixed with water to produce a

milk-of-lime. Carbon dioxide gas is bubbled through the

milk-of-lime in a reactor known as a

carbonator.


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Economics of GCC


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The market for ground calciumcarbonate (GCC) has expanded from

around 56Mt in 2004 to almost 72Mt in2007, an average annual growth rate ofnearly 9%.

World demand for GCC is forecast to

continue to grow at an average annualgrowth rate of 4% to 2012, to reach87.4Mt

The market for GCC in paper coating has

shown a high rate of growth because ofits brightness and good performance inhigh speed paper machines.


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The plastics industry is the second

largest user of GCC, accounting for an

estimated 14.4Mtpy of consumption in2007, compared with 10.2Mtpy in

2004

Ten companies control nearly 64% ofglobal production capacity; just two

companies, Omya(Switzerland) and

Imerys(France) account for 45% ofglobal capacity.


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Economics of PCC


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World demand for precipitated calciumcarbonate (PCC) is forecast to grow by an

average of 4%py from around 13Mt in2007 to nearly 16Mt by 2012.

Growth rates will be highest in the paint(6%py) and rubber (4%py) industries

though the largest increases in terms oftonnage will be in paper and paint.

Much of the increase in demand will take

place in Asia, especially in China, withmuch lower rates of growth forecast forNorth America and Europe.


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The largest regional market for PCC is inAsia, followed by North America and

Europe The paper industry is the largest

consumer of PCC estimated 5.5Mt in2007, this market accounted for over40% of world PCC consumption.

World demand for PCC in paper isforecast to grow at an average of nearly3%py through 2012.

Chinese PCC consumption is forecast torise by 6%py to reach 8Mt in 2012,around half the estimated world total.


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The three main international

producers are MTI of the USA, Omyaof Switzerland and Imerys of France.

Three Chinese producers Guangxi

Guilin Jinshan Chemica, DujiangyanCalcium Carbonate and Guangdong

Enping Jiawei Chemical are now

ranked in the worlds top ten,

although all Chinese companies justoperate domestic plants.


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CACO3 Presentation