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| Iide silica sand:The merit of a grain form is
known as squeaking sand. |
Iide
silica sand is sold as a casting and construction material,
and as a carrier for agriculture chemicals.
This silica sand is produced from ore found in a natural
sand deposit by crushing, washing, drying and screening.
The product is classified as natural silica sand, and
offers a number of excellent properties in terms of its
single crystal hardness and roundness.
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Enlarged photograph of Iide silica sand |
Major product: Iide silica sand
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| 1. |
Stable quality |
| 2. |
Single crystal, round grains |
| 3. |
Hardness; physical and chemical stability |
| 4. |
Free of impurities such as salts and organic matter |
| 5. |
Wide availability, offering a choice of the right grade for each application |
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| Washed sand for molding |
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The product is used for non-organic self-curing molding by green sand molding or CO2 processes, and for organic self-curing molding by the alkali-phenol or shell-molding method. |
Sand for construction materials
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Pre-mixed mortar
aggregates, artificial turf filler, filtering sand,
and sand blasting material. |
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| Sand for construction materials |
| Iide silica sand sells as an object for building
materials taking advantage of the special feature of "good
natural silica sand [ being granular (the degree of yen) ]."
In the Kanto area, since protection and regulation of a river
are severe, the demand as a substitute of river sand has been
acquired. It is broadly used for the boilers for artificial
lawns (a tennis court, gateball place). |
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for rust dropping as shot sand.
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| Sand for agricultural chemicals |
| agricultural chemicals means the sand used as
the heart material which carries out coating of the agricultural
chemicals. It serves both as the ease of spraying, and scattering
/ inhalation prevention, and a part class is specially carried
out to a single particle size. |
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Analyses
in the manufacturing process |
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Regular analyses are carried out on ore
deposits, original ore, intermediate and final products
mainly in terms of grain size and chemical properties
to ensure a better processing and product quality control. |
| Shipment
Analyses |
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Quality control measures are taken by conducting
analyses on grain size and chemical properties, as well
as basic properties such as clay content and bulk specific
gravity. |
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| Product |
Type |
Washed Sand
for molding
for construction
materials
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W-4
W-5
W-6
W-7 |
| agricultural chemicals |
W-5A |
Tochigi Silica Sand:
Well-known by its brand name of "Nikko Silica Sand" |
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Major product: Tochigi Silica Sand
(magnetically separated Nikko Silica Sand No.6) |
Two kinds of Tochigi silica
sand,fresh and reclaimed sand. Fresh sand is manufactured
silica sand from ore (granular silica rock) excavated
from the Mizuki mine. The excavated ore is crushed, disintegrated
washed, dried and screened at the Awano plant, producing
the final product with the brand name of Nikko Silica
Sand.
Reclaimed sand is recycled sand produced from molding
sand that was used for casting, which has been calcined
and scrubbed to make usable again.
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| 1. |
Stable quality |
| 2. |
Single crystal,
round grains |
| 3. |
Hardness; physical
and chemical stability |
| 4. |
Free of impurities
such as salts and organic matter |
| 5. |
Wide availability,
offering a choice of the right grade for each application |
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Fresh sand
(washed sand)
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After separated to each grain
from granular crude ore,washed by water to enhance the
SiO2 grade and dried, and then manufactured as a product
after screening for grain size and form. |
Fresh sand (Prenium sand)
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The sand is treated by powerful
scrubbing and magretic separation to enhance its silicic
acid grade by removing cray and iron oxide |
Reclaimed sand
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Recycled product from used
foundry sand shows surppasing quality against fresh sand
in finess, heatproof, roundness |
Magnetic separation sand for molding
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The product is used for
organic self-curing molding by the alkali-phenol
or shell-molding method. |
Washed sand for molding
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The product is
used for non-organic self-curing molding by green
sand molding or CO2 processes
Molds for automobile engines |
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Enlarged photograph
of Nikko Silica Sand |
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| Silica sand for construction materials |
Silica sand is used for
various applications, including mortar aggregates, filtering,
lining, artificial turf( tennis courts, gate-ball fields) and
as a boiler heat media, sand blasting material and a fire-proofing
material.
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Mortar
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Lining
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Analyses in the manufacturing process |
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Regular analyses are
carried out on ore deposits, original ore, intermediate
and final products mainly in terms of grain size
and chemical properties to ensure a better processing
and product quality control. |
| Shipment Analyses |
|
Quality control measures
are taken by conducting analyses on grain size and
chemical properties, as well as on basic properties
such as clay content and bulk specific gravity. |
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| Product |
Type |
Fresh Sand
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4
5
5.5
6
7
7.5
8 |
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| Itaga Silica Rock |
Silica rock produced by Itaga mining division of Awano Saiseki Co.,Ltd
is crushed into granules with a diameter of 40 mm or smaller
and sold as a silica acid material for autoclaved lightweight
concrete (ALC).
This product is a high-grade crystal silica rock having
a high reactivity with quicklime, aluminum powder (gas-forming
agent) and other materials, as well as capable of generating
an outstanding color for the final product.
| Product |
SiO2 |
Grain size distribution
（mm） |
Silica rock for ALC
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90% or higher |
40〜0 |
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Itaga silica rock for ALC
(40~0 millimeter) |
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