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Contact Information
Iran office:
Chemical Mine World Co.
M.Tavajjoh
TEL: +98 21 33128396
FAX: +98 21 33127708
MOBILE: +98 912 5224843
info@biz-chemical.com
sales@biz-chemical.com
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PUMICE PRODUCTS
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Applications of Iran Pumice in the Cultivation of Ornamental Plants
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Malar
pumice stone are
fine grains appearing
resulting
volcanic.
The most impprtant advantage of them compared to similar construction
materials such as
sand, is their low bulk weight (nearly 0.7) a
high
degree of hardness and high
porosity, they are white, grayish white or
acidic white in color and
are available in a variety of sizez as small as
garins to bigger pieces of more than 100 mm across and each size
is
used for specific purpose. |
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According to experiments conducted on Malar Pumice stone , and as
admitted by experts an consumers , compared to other types of
construction meterials and other types of Pumice stones , Malar Pumice
stons enjoy a better quality , a better yield and are more
appropriate to use.
Considering the low rate of bulk weight of Malar Pumice stones
and the solidity of concrete made of Malar Pumice stones together
with cement , using these products can increase the resistance of
the buliding against earthquakes and shkings caused by explosions and
there will coinsidered to be very important for construction of huge
buildings in grounds which are not solid enough.
The insulating guality of Malar Pumice stones against heat and
its high melting point (1342 C) and the fact that there is no change
in its shape and volume up to 760 C have all made these products
very intersting f eatures and pervent collapse of buildings in fire ,
which usually happens as results of too much heating of the metal
frame. besides the various positive effect of Malar Pumice in raising
the guality of construction works , using this mineral substance is
cost effective and prevents redundant ecpenses. |
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Pumice stones are found in oval - shaped pieces , 50 to 100
meters across , with a
height of nearly 5 meters , located deep in the earth under
layers of soil and
rock. Methods of exploration include digging wells and trenches. Then
, rock and soil layers are removed off Pumice layers by
bulldozer.
In the next stage . the loading operation is performed with the help of
loaders and the
trucks carry load ou t of the mining area.
It is possible to do
mining activities for 10 months out 12 months
of the year .The total
useful working days are 250 throughout the whole year .
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The type of material was used by the ancient Roman engineers in building
construction , it has been used in USA since 1940 and in Iran presently.
besides being used in Iran , it is also exported to be Persian Gulf
States the U.A.E, Saudi Arabia,etc.
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An anlaysis of Mala Pumice stones
as per standards of the Iranian
Institute of Standards and Industrial Research has rendered the
Following results:
Aluminum Oxide (AL2o3 ) % 16.32
Magnesium Oxide ( MgO ) % 1.5
Silicon Oxide ( SiO )2 % 58.08
Calcium Oxide ( CaO ) % 3.28
Other remaining oxides % 20.82
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D.COM.ST |
1300kgr/cm² |
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W.COM.ST |
1306kg/cm² |
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BD |
66%vol |
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D. |
1.92g/cm² |
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D.S |
0.7g/cm² |
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H |
7.18in mosh scale |
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EXP.COEF |
0.04 |
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CON.COEF |
0.01 |
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PCT.LIN.AT |
200c |
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PCT.LIN.AT |
40c |
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OXIDES |
PCT |
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Sio2 |
51.72 |
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Al2o3 |
14.35 |
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Fa2o3 |
6.71 |
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Feo |
8.84 |
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Mgo |
4.57 |
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Cao |
5.11 |
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Na2o |
3.27 |
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K2o |
2.64 |
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L.O.I |
2.41 |
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TOTAL |
99.62 |
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1)Low specific weigh (0.5 to
0.7) that will make them float on water
2)Sound , cold and heat insulation
3)Resistance against fire,it
will not change either in volume or in from up to 760 C.(melting point of this
mineral material is 1342 C)
4)Solidity , concrete and meterials consisting of Pumice stones
obtained in Malar will
have a high soidity compared to weight . Also
they are penertrable by nails and will hold the nails in place
5)Elasticity , the elasticity feature makes it possible for construction
materials consisting for Malar Pumice stone to recive more beats
without breaking into chunks or sheets.
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Applications Of Light weight
concrete , Light weight Block
-For
determining roof and floor slope ( grains smaller than 40 mm )
-In lightweight roof and wall blocks, lightweight floor tiles, lightweight concerete,
lightweight load_bearing pieces, and separating pieces ( grainssmaller than
15 mm )
-As sound insulation in engine rooms and noisy places(2 to 40mm
grains )
-As thermal insulation for refrigerationg rooms and hothouses and thermal
pipe coverings ( 2 to 40 mm grains )
-For agricultural purposes in dry regions, because of its water absorbing and
preserving guality (from fine grains up to 30 mm)
-For polishing metal pieces and silverware
-Bleaching( 20 to 40 mm grains )
-In the construction of dams, and bridges ( powdery grains ) The important
point to be mentioned here is the concrete being
-made of Pumice stones, besides its lightweight, shows an extraordinary
solidity and resistance in different conditions
-Mixture of this material with slaked lime gives some kind of natural cement,
which hardens in-and outside water
-This mineral can be used in the cement industry as one of the important
elemetns in the making of cement.
Mixing percentage
up to %40 gives Portland pozzolan cement
Mixing percentage
more than %40 gives pozzolan cement
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Applications of Iran Pumice in the Cultivation of Ornamental Plants
Regarding application of Iran
Pumice stones in the cultivation of ornamental plans and
their replacement which ordinary types of soil some tests have
been carried out in the Botanical physiotherapy
Laboratory of Tehran University, in which Malar Pumice stones were used in the
cultivation of the African violet, aglonma and pandanus and
the following results were obtained. Compared to the cultivated of
these plants in ordinary soil (leaf compost and sand) the tested plants showed
a better and faster growth rate.
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Generally , Malar Pumice has certain advantages if used for apartment
plant:
1. Pumice stones have a high capacity for absorption of water and
can be used a source of water after saturation
2. Apartment plants cultivated in soil will need watering once in
every three to seven days , depending on pot size temperature , and
growth rate , while plants cultivated in pumice stones , if kept in
touch with plenty of water , can constantly remain saturated
thus fulfilling the plant`s need to water in the longs run.
3. One of important points regarding plant soil and root is
the ventilation around the roots. in common type of soil considering
the non-compact quality of the soil in the early stage of
cultivation of the plant in soil , this is rather useful feature.
However , after a while , the soil will become denser and this
will hinder proper ventilation. As result , the plant will stop to
grow by replacing soil with Malar Pumice
stones , however , considering the high degree of porosity and the space
between the grains proper ventilation will be made possible .
4. Apartment plants are constantly given water and mineral fertilizers
however , the gradual build-up of water and fertilizer sediment result
in hardness of soil and this in run stops absorption by the root
of needed nutrients and causes consider able reduction in the growth
of the plant. However replacing soil with this type of Pumice stones in
the cultivation of plants this problem can easily be
eliminated. thus , every 40 to 50 days. by flowing a slow stream of
water over the Pumice stones they will be washed and sediment will
be removed from around the roots. |
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