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Aggregates & Construction Building Materials

KROOSH screeners are used in many industries related to the production of aggregates and construction materials. Some of these tasks are quite standard and can be performed using screeners by other brands, but some of the tasks are unique and practically unrealizable for conventional screeners (for example, for such building materials as gypsum screening, including beta-gypsum).
We have extensive experience in the following industries:
  • limestone and dolomite screening with moisture up to 5-8% and with cut points 1.4 - 4.0mm;
  • screening of building plaster;
  • purification of fine binders and fillers in the production of glass and dry building mixtures;
  • processing of sand and clay dumps formed during road and construction works;
  • fine sizing of silicate materials;
  • sizing of screenings for crushing non-metallic rocks.
As a result, our technology makes it possible to screen hard-to-screen products and obtain high quality commercial grade even at high moisture, high level of hygroscopicity of building materials and high contamination with foreign materials.
Dolomite

Modern industry is in dire need of technical means that can expand the range of high-quality materials from non-metallic rocks for use in road construction, the production of concrete and asphalt concrete mixtures and plaster mortars, the production of dry building mixtures, granite chips for the manufacture of roofing, ceramic and paving slabs , small architectural forms, in water purification systems, in glass production, etc.

 

At the same time, large volumes of hard-to-screen products with particle size of less than 5 mm, are sent to waste, since they are not amenable to economically expedient further sizing by the technical means available at plants. Waste is stored in dumps, what also creates considerable environmental problems.


Despite this, hundreds of millions of tons of materials that have already been mined to the surface but are not used due to the backwardness of their processing technology continue to lie in the dumps.

 

Solution
Kroosh Technologies Ltd. has developed and manufactures a wide range of KROOSH Ultimate Screeners (ULS) – multi-frequency vibratory screening machines, the principle of operation of which has made it possible to solve the problem by “dry” screening of wet materials and crushing screenings in narrow separation classes from 1 mm to 25 mm directly in quarries and stone crushing plants. At the same time, the range of products obtained is not limited to sands from crushing screenings, but expands to the production of other materials, including wet fine crushed stone, which is used in the construction and metallurgical industries (i.e. production of flux limestone and dolomite).

 

KROOSH ULS machines are also designed with rinsing option if needed.

Dry mix mortars

KROOSH screeners are used in many industries related to the production of building materials. Some of these tasks are quite standard and can be performed using screeners by different manufacturers, but some of the tasks are unique and practically unrealizable bye traditional screeners (for example, such hard-to-screen gypsum screening).

We have a huge experience in the following industries:
  • screening of building plaster and gypsum
  • purification of fine binders and fillers in the production of glass and dry mortars mixtures
  • processing of sand and clay dumps formed during road and construction works
  • fine sizing of silicate materials
  • screening of non-metallic rocks crushing.

KROOSH technology allows to operate hard-to-screen products receiving high-spec quality even with
product’s high moisture.

Granite

Modern industry is in dire need of technical means that can expand the range of high-quality materials from non-metallic rocks for use in road construction, the production of concrete and asphalt concrete mixtures and plaster mortars, the production of dry building mixtures, granite chips for the manufacture of roofing, ceramic and paving slabs , small architectural forms, in water purification systems, in glass production, etc.

 

At the same time, large volumes of hard-to-screen products with particle size of less than 5 mm, are sent to waste, since they are not amenable to economically expedient further sizing by the technical means available at plants. Waste is stored in dumps, what also creates considerable environmental problems.


Despite this, hundreds of millions of tons of materials that have already been mined to the surface but are not used due to the backwardness of their processing technology continue to lie in the dumps.

 

Solution
Kroosh Technologies Ltd. has developed and manufactures a wide range of KROOSH Ultimate Screeners (ULS) – multi-frequency vibratory screening machines, the principle of operation of which has made it possible to solve the problem by “dry” screening of wet materials and crushing screenings in narrow separation classes from 1 mm to 25 mm directly in quarries and stone crushing plants. At the same time, the range of products obtained is not limited to sands from crushing screenings, but expands to the production of other materials, including wet fine crushed stone, which is used in the construction and metallurgical industries (i.e. production of flux limestone and dolomite).

 

KROOSH ULS machines are also designed with rinsing option if needed.

Marble

The production managers and process engineers of factories for the processing and use of crushed
sedimentary rocks (i.e limestone, dolomite, chalk, marble) meet the following problems during the
operation:

  • how to screen wet raw materials and very often without pre-drying;
  • how to bring unders less than 5 mm back to the process;
  • how to return to production or recycle millions of tons of accumulated waste dumps;
  • how to get better screening quality of products 0-20 mm;
  • how not to increase the footprint and the number of screening equipment but still to operate high feed volumes;
  • how to arrange minimum dynamic loads on building structures.

KROOSH technology allows you to solve all these problems.

Limestone

Modern industry is in dire need of technical means that can expand the range of high-quality materials from non-metallic rocks for use in road construction, the production of concrete and asphalt concrete mixtures and plaster mortars, the production of dry building mixtures, granite chips for the manufacture of roofing, ceramic and paving slabs , small architectural forms, in water purification systems, in glass production, etc.

 

At the same time, large volumes of hard-to-screen products with particle size of less than 5 mm, are sent to waste, since they are not amenable to economically expedient further sizing by the technical means available at plants. Waste is stored in dumps, what also creates considerable environmental problems. Despite this, hundreds of millions of tons of materials that have already been mined to the surface but are not used due to the backwardness of their processing technology continue to lie in the dumps.

 


Solution
Kroosh Technologies Ltd. has developed and manufactures a wide range of KROOSH Ultimate Screeners (ULS) – multi-frequency vibratory screening machines, the principle of operation of which has made it possible to solve the problem by “dry” screening of wet materials and crushing screenings in narrow separation classes from 1 mm to 25 mm directly in quarries and stone crushing plants. At the same time, the range of products obtained is not limited to sands from crushing screenings, but expands to the production of other materials, including wet fine crushed stone, which is used in the construction and metallurgical industries (i.e. production of flux limestone and dolomite).

 

KROOSH ULS machines are also designed with rinsing option if needed.

Diabase

Modern industry is in dire need of technical means that can expand the range of high-quality materials from non-metallic rocks for use in road construction, the production of concrete and asphalt concrete mixtures and plaster mortars, the production of dry building mixtures, granite chips for the manufacture
of roofing, ceramic and paving slabs , small architectural forms, in water purification systems, in glass production, etc.

 

At the same time, large volumes of hard-to-screen products with particle size of less than 5 mm, are sent to waste, since they are not amenable to economically expedient further sizing by the technical means available at plants. Waste is stored in dumps, what also creates considerable environmental problems.


Despite this, hundreds of millions of tons of materials that have already been mined to the surface but are not used due to the backwardness of their processing technology continue to lie in the dumps.

 

Solution
Kroosh Technologies Ltd. has developed and manufactures a wide range of KROOSH Ultimate Screeners (ULS) – multi-frequency vibratory screening machines, the principle of operation of which has made it possible to solve the problem by “dry” screening of wet materials and crushing screenings in narrow separation classes from 1 mm to 25 mm directly in quarries and stone crushing plants. At the same time, the range of products obtained is not limited to sands from crushing screenings, but expands to the production of other materials, including wet fine crushed stone, which is used in the construction and metallurgical industries (i.e. production of flux limestone and dolomite).

 

KROOSH ULS machines are also designed with rinsing option if needed.

Diorite

Modern industry is in dire need of technical means that can expand the range of high-quality materials from non-metallic rocks for use in road construction, the production of concrete and asphalt concrete mixtures and plaster mortars, the production of dry building mixtures, granite chips for the manufacture of roofing, ceramic and paving slabs , small architectural forms, in water purification systems, in glass production, etc.

 

At the same time, large volumes of hard-to-screen products with particle size of less than 5 mm, are sent to waste, since they are not amenable to economically expedient further sizing by the technical means available at plants. Waste is stored in dumps, what also creates considerable environmental problems. Despite this, hundreds of millions of tons of materials that have already been mined to the surface but are not used due to the backwardness of their processing technology continue to lie in the dumps.

 

Solution

Kroosh Technologies Ltd. has developed and manufactures a wide range of KROOSH Ultimate Screeners (ULS) – multi-frequency vibratory screening machines, the principle of operation of which has made it possible to solve the problem by “dry” screening of wet materials and crushing screenings in narrow separation classes from 1 mm to 25 mm directly in quarries and stone crushing plants. At the same time, the range of products obtained is not limited to sands from crushing screenings, but expands to the production of other materials, including wet fine crushed stone, which is used in the construction and metallurgical industries (i.e. production of flux limestone and dolomite).

 

KROOSH ULS machines are also designed with rinsing option if needed.

Gypsum
Gypsum is a typical mass product in the production of dry mix mortars. Special requirements are imposed here on the purity of the 0-200 micron fraction, which is tried to be obtained by control screening of the raw material at vibrating screeners. At the same time, the main difficulty lies in the fact that the widely used conventional vibrating screeners do not provide sifting in the class of 200 microns, which leads to a forced increase in the mesh aperture size and, as a result, to a loss in product quality.

In most cases, screening becomes possible on meshes with apertures close to 1.0 mm. At the same time, due to a significant difference in the properties of the raw material, depending on the deposit and processing technology, some gypsum is not sown on such large screen meshes.

That changed with the introduction of KROOSH's "Ultimate Screener" (ULS), based on KROOSH'S advanced multi-frequency technology. An example of the successful long-term operation of ULS screens is the screening of β-gypsum on them at the plants of our customers.

Currently, a significant number of manufacturers of dry mix mortars implemented multi-frequency vibrating screeners KROOSH in their production lines, that successfully solve complex technological problems in obtaining of hi-spec gypsum.
Dolomite

Purpose:
to increase production volume at dolomite screening cut 1.4mm with moisture up to 5%.
Application:
quarries of non-metallic rocks
KROOSH Results:
production capacity increased in 10+ times (up to 22-25 mtph of good product outlet); no more mesh clogging and bridging.
Reason of installation:
low capacity of the conventional equipment (single-frequency vibrating screener) was just 2 mtph of good product outlet 0-1.4mm as well as mesh clogging.
Product:
stone chips and sand for concrete grout and plaster mortars.
Granite

Purpose:
to avoid wet cleaning of the product due to screening of hard-to-screen granites chips with high moisture and very high clay content.
Application:
granite quarries
KROOSH Results:
saving energy and water resources; no need to build purification facilities due to on-spec dry screening of hard-to-screen product.
Reason of installation:
screeners of other brands couldn’t solve the task.
Product:
granite chips cut 5.0 mm with moisture up to 5% and with clay and mud content up to 10%.
Limestone

Purpose:
screening of limestone 0-20 mm with moisture up to 5% with cut 5.0 mm and 1.4 mm in a closed cycle with a crusher.
Application:
quarries for the extraction and processing of non-metallic rocks.
KROOSH Results:
the equipment remains operational outside under changing weather conditions and provides an increase in the production of high-spec sand with a fineness of 0-1.4 mm with less energy consumption and a smaller screening area.
Reason of installation:
Product:
limestone sand 0-1.4 mm
Diabase: moisture up to 4%

Purpose:
to start production of new high-spec products from wet/moisture crushed diabase.
Application:
non-metallic rock quarry
KROOSH Results:
now the customer can produce on-spec product by the dry screening of diabase with moisture up to 4%.
Reason of installation:
the customer couldn’t receive on-spec product with the conventional screeners.
Product:
diabase chips 3-6mm and diabase sand flour 0-3mm and 0.0-0.6mm.
Marble: 0.315mm and 0.16mm

Purpose:
to increase the production line capacity for marble cut at 0,315mm and 0,16mm.
Application:
dry mix mortal production lines
KROOSH Results:
operation with high capacity and high spec product for all fractions.
Reason of installation:
due to low capacity of the existing conventional vibrating screener the customer decided to install new KROOSH multi-frequency screener.
Product:
marble aggregate, marble sand, marble powder with 0.8% moisture
Diorite

Purpose:
to remove clay and dust from the diorite crushing products at cut 0.125mm and 4.0mm with moisture up to 4%.
Application:
granite and diorite quarry
KROOSH Results:
now the customer can produce hi-spec diorite sand that was not possible before, especially due to clay and dust in a product. The spec is max.10% of -0.125mm in the good product. The feed capacity is up to 150 mtph.
Reason of installation:
the customer couldn’t receive on-spec good product with the conventional screeners.
Product:
diorite sand 0-4mm
Gypsum

Purpose:
screening of gypsum with moisture 3.3% at cut 0.6mm.
Application:
gypsum plants or dry mortars plants.
KROOSH Results:
on-spec screening of hard-to-screen product with high moisture.
Reason of installation:
Product:
gypsum cut 0.6 mm
dry mix mortars case

Dry mix mortars case

Purpose:
the customer started to use wet sand contaminated with clay and some green plants; as a result the conventional screeners were clogged and as well as the good product was contaminated.
Application:
dry mix mortars
KROOSH Results:
the customer can get pure good product from cheap wet contaminated sand 0-3mm.
Reason of installation:
conventional screeners were clogged and blinded.
Product:
sand for decorative materials
Silicates case

Purpose:
Application:
KROOSH Results:
Reason of installation:
Product:
Sand-clay tailings case

Purpose:
Application:
KROOSH Results:
Reason of installation:
Product:
Dolomite

Purpose:
control screening of high-spec dry dolomite at glass production line for glass melting process.
Application:
glass industry.
KROOSH Results:
high-spec sand for glass industry
Reason of installation:
new production line
Product:
dolomite 0-0.95 mm for glass industry
Granite 2

Purpose:
good product recovery from fines’ wastes after the primary screening.
Application:
non-metallic minerals quarries
KROOSH Results:
the customer can operate dry screening with a hard-to-screen wet product with moisture up to 5%. In the past these product was sent to the wastes and now the customer recover good product and therefore increase the production volume of the whole plant.
Reason of installation:
screeners of other brands couldn’t solve the task.
Product:
dolomite chips 2.5 - 8.0 mm and 0.63 - 2.5mm as well as sand 0.0 - 0.63mm.
Limestone: chips and flour with 8% moisture

Purpose:
the customer couldn’t receive on-spec product with the conventional screeners.
Application:
fines removal from limestone with 8% moisture.
KROOSH Results:
now the customer can produce on-spec product by the dry screening but from the limestone with high moisture 8%.
Reason of installation:
Product:
limestone chips 3-10mm and limestone flour 0-3mm.
Dolomite

Purpose:
to increase the line’s production volume.
Application:
non-metallic minerals quarries.
KROOSH Results:
Significant increase of production volume
Reason of installation:
screeners of other brands couldn’t solve the task.
Product:
dolomite chips +3.0mm and 1.4-3.0 mm as well as sand 0.0-1.4mm.
Limestone: drainage sand

Purpose:
fines removal from limestone with 6% moisture.
Application:
limestone quarry
KROOSH Results:
now the customer can produce on-spec sand that was not possible before, especially due to high moisture in a product.
Reason of installation:
the customer couldn’t receive on-spec product with the conventional screeners.
Product:
limestone drainage sand 1-4mm
Dolomite 4

Purpose:
to get hi-spec fine sand (0.0 - 1.2 mm) and new product fractioning (chips 2.2 - 6.0 mm) by dolomite screening with moisture up to 5%.
Application:
non-metallic minerals quarries
KROOSH Results:
on-spec production of dolomite chips and sand with high moisture.
Reason of installation:
screeners of other brands couldn’t solve the task.
Product:
dolomite chips 7-20mm and 1.6-7.0mm as well as sand 0.0-1.6mm.
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