We are offering Limestone Powder Finely Selected from Egyptian Mines Specially ground Limestone Powder
Limestone Powder Sizes
(25 micron, 35 micron, 55 micron, 75 micron, 100 micron, 150 micron & 200 micron)
500 mesh, 350 mesh, 250 mesh, 125 mesh, 80 mesh & 50 mesh)
Limestone Powder Applications
1. Fish Feed
2. Poultry Feed
3. Feed Premixes
4. Insulations ( Bitumen Rolls Manufacturing )
5. Calcium Nitrate & Calcium Sulphate manufacturing
6. Mono and Di-Calcium Phosphate Manufacturing
8. Detergents Manufacturing
9. Outdoor Paints
10. Acrylic Paints
11. Paints Putty
12. Texture Paints
13. Gypsum Plaster of Paris
Limestone Granules (Feed Grade) & LimeStone Powder is Selectively tested in our Factory Labs ( Size and Purity ) as per the standard parameters of quality .
Our Calcium Carbonate (CaCO3) is an ideal choice because of its purity, high calcium content, Low Magnesium Content which is very undesirable if Poultry , Fish and Animal Feed.
Limestone Powder Specification
Ca ( Calcium Content ) : 38-39% Min
CaO ( Calcium Oxide ) : 54-56% Min
MgO ( Magnesium Oxide ) : 0.04-0.1% Max
Whiteness > 92 %
Brightness > 85%
Properties & Applications
Limestone is a rock that contains calcium carbonate in the form of calcite.
It is found beneath the earth’s crust & abundant in nature as by 10% of the land is made up of limestone and similar rocks.
It comprises the elements like carbon, calcium & oxygen.
Some minerals such as gypsum, dolomite, marble resemble limestone but have different chemical compositions.
The limestone industry is highly capital intensive. Lime is widely used range of industries such as waste water treatment, steel, building and construction,
It is used as a fluxing agent in the steel industry, in construction industry as binding agent, and in wastewater treatment industry as a filtering agent. Cement is used as a binding agent that holds various components of concrete structures. Concrete is the second-most consumed material after water. Cement is also manufactured from limestone. Lime products derived products such as hydrated lime and quicklime also used in cement industries.
There is a rising demand for Limestone driven by the construction and water treatment industries.
They are used in paints and varnishes, drinking water, increase soil stability, reduce acid gas from flue gases, and fertilizer’s sector
The growing new infrastructural activities is expected to provide considerable growth opportunities by the various industries over the future periods.
Limestone which is used as a base material for the construction of roads, buildings, and other infrastructure. Crushed or Powdered limestone is used in Portland cement, railroad ballast, road base, and structural fill. The usage of lime enhances the soil condition and binding quality during construction and, also, adds long-term improvement of soil properties.
Further, in the chemical industry, limestone is used during the production of lime, ammonia, sodium bicarbonate, soda ash, and calcium carbide, among others. In desalination application, the limestone used in the neutralization of water that is used to treat industrial as well as mining wastewater.
Limestone Products and Derivatives
1. High Calcium Limestone
2. Magnesium Limestone
3. Calcium magnesium carbonate (dolomite)
4. Calcined Limestone or QuickLime products
5. Hydrated Lime Products.
1. High quality calcium limestone contains 98% to 99% calcium carbonate and the remaining are impurities.
2. Dolomitic limestone contains 42-44% magnesite, 1% to 3% impurities, and the remaining is balanced by calcium carbonate.
Limestone is available in different types due to its sedimentary composition. Two classification schemes are used to differentiate limestone which include Dunham and Folk classification which differentiate limestone and carbonate rocks.
3. Magnesium carbonate is a magnesium salt with formula CMgO3. Its hydrated forms, particularly the di-, tri-, and tetrahydrates occur as minerals. It has a role as an antacid and a fertilizer. It is a magnesium salt, a carbonate salt and a one-carbon compound.
Limestone Various Applications Areas : –
LimeStone usage in poultry feed is the largest contributor of dietary calcium for poultry feed and birds in various ages ( Broiler, Layer and Husbandry Chicken ) birds for strong bone and eggshell formation.
This is the most common source of calcium used in livestock feeding.
Limestone with calcium content from 36-38% Can be safely fed to poultry and fish feed as well as sheep and cow supplement for calcium sources.
Dolomitic limestone contains at least 5 % magnesium carbonate and should not be used for poultry, but it could be used for other animals.
Construction Industry ( Paints & Ready Mix )
Limestone has a wide variety of uses in home construction paints and varnishes.
2. Cement Industry
1. The use limestone in PortLand limeStone Cement as cheap components that proves environmental and cost reduction when added with proper portions.
2. Due to the availability of limestone with the needed chemical composition, it is possible to produce Portland limestone cement.
3. In construction industry decision makers and raw material engineers should exploit the usage of limestone to use it economically.
4. Cement based building bricks used to contain limestone dust and cement
3. Metallurgical Industry
The main uses of limestone in iron and steel industry are
(i) as a fluxing material,
(ii) other usage which consists of desulphurizing agent, coating of moulds of pig casting machine
(iii) neutralizing of acidic water, water treatment, waste water (effluent) treatment, flue gas treatment, and sludge and sewage treatment.
Basically three types of limestone products are used in iron and steel plants.
1. raw limestone products,
2. calcined limestone or quicklime products, and
3. hydrated lime products.
1. Raw Limestone Products
The first process takes place at limestone mines where the mined ore undergo crushing and screening for the separation of the different size fractions of the ore. In the iron and steel plant, in some of the places, raw limestone is further processed. Example is sinter plant where the raw limestone is crushed in hammer mills to – 3 mm size (generally in the range of 85 % to 90 %).
2. Calcination of Limestone
is a thermal process of removing carbon di-oxide (CO2) treatment this treatment partially decomposed piece of limestone.
3. Hydrated Lime
The process of transferring Calcined Lime ( Quick Lime ) to Hydroxide by adding water this converts oxides to hydroxides also called slacked lime.
LimeStone limestone is crushed to -3 mm (in the range of 85 % to 90 %) by using hammer crushers before mixing it in the sinter mix. In direct blast furnace feeding, limestone lumps of 10-40 mm size are used.
LimeStone also used to mainting slag basicity (CaO/SiO2) of around 3. In steelmaking, limestone is used in Quick Lime ( Calcined form )
4. Paper & Pulp Industry
Due to high brightness, low cost and light scattering characteristics Calcium carbonate extensively used as pigment and filler for paper industry for making of printing papers and board.
More than 90% of paper and paperboard is manufactured in Asia, Europe and North America. Asia is the biggest market share 34%, Europe and North America are following with 30% and 29% respectively.
The main types of mineral Filler for acid papers are talc, hydrous kaolin, calcined kaolin, precipated Silica/silicates (PSS), and titanium dioxide. For neutral/alkaline papers, talc, hydrous kaolin, calcined kaolin, PSS, titanium dioxide, ground calcium carbonate (GCC), and precipitated calcium carbonate (PCC) are used.
5. Chemical Industry
Chemical Uses of Lime
Lime is a basic industrial chemical used in numerous chemical processes.
Alkali plants with access to natural soda ash use the “lime-soda process” to manufacture caustic soda (sodium hydroxide). Caustic Soda and precipitated calcium carbonate as by-products.of Sodium carbonate (soda ash) that reacts with lime slurry.
5.2 Calcium Carbide and Cyanimide
5.3 Citric Acid
Lime is used in the purification of citric acid.
To remove suspended solids Hydrated lime is added to citric acid.
Lime is used to produce magnesia (magnesium oxides)
5.5 Calcium Hypochlorite
Calcium hypochlorite bleaches are produced by reacting lime with chlorine. These bleaches are widely used as swimming pool chemicals and in paper production.
5.6 Calcium Magnesium Acetate
By adding to Dolomitic lime to acetic acid calcium magnesium acetate (CMA) is produced used mainly as a de-icing and environmental friendly, with less damaging to road surfaces and automotive parts than salt. At very low temperatures It is efficient in melting ice with non toxic
5.7 Miscellaneous Chemical Uses
Lime is widely used to manufacture of many other inorganic and organic chemicals and pharmaceuticals. Most of the calcium organic and inorganic salts are produced by reacting the various acids with lime (the base).
InOrganic products that use lime are calcium phosphates (mono, di, and tri), fluoride, bromide, ferrocyanide, and nitrate.
Organics such as calcium acetate, stearate, oleate, tartrate, lactate, citrate, benzoate, and gluconate.
Lime is also used as a neutralizing agent in the produce of chrome chemicals (bichromate); for purification of salt brines; to aid in the concentration of dextrin & glucose; to manufacture metallic calcium; as soda-lime gas purifier and absorbent for countless other minor or isolated purposes, such as for CO2 absorption, as a desiccant, etc.
Lime is used in the production of ethylene glycol and propylene glycol
Industrial Uses of Lime
Hydrated lime is essential to the production of sugar from both sugar cane and sugar beets. It is also used to purify sugar from other sources, such as maple or sorghum, although these are produced in much smaller quantities.
Sugar cane and sugar beets are harvested and processed with water to form raw juice, which has low pH and contains dissolved impurities. Hydrated lime is added to the juice to raise the pH and to react with the impurities to form insoluble calcium organic compounds that can be removed. Excess lime is removed by carbonation or by the addition of phosphoric acid. This process may be repeated several times depending on the purity of final product required.
6. ( Food Industry )
Lime serves a myriad of uses in the food industry. Some examples include:
1. Dairy Industry
LimeWater is added to reduce the acidity during the separation whole milk from butter, also used to produce calcium caseinate & Calcium lactate.
2. Glue and Gelatin
Waste materials from the disposal of factories are treated with lime in slurry form.
Used to produce baking powder by the reaction of phosphoric acid with concentrated Calcium LimeStone also used in the production of monocalcium phosphate & diCalcium Phosphate
4. Fruit and Vegetables
Bags of hydrated lime are placed in storage room to absorb CO2 emissions that exudes from ripening fresh produce to enable vegetables and fruit to be stored fresh for much longer periods.
7. Waste Water Industry
1. Municipal Wastewater Treatment
Lime and Ferric Chloride ( FeCl3 ) are used as filtration aids to treat sludge.
2. Industrial Wastewater
Lime has numerous applications in treating industrial wastewaters, especially where neutralization of acidic wastes is required.
- In steel plants LimeStone used as neutralizer for sulphuric acid and other metals as chrome, copper, and heavy metals in wastewater from plating plants.
- In rayon plants, lime is used to neutralize sulfuric acid wastes.
- In cotton textile finishing plants (dye works), dissolved solids in wastewater is being neutralized and precipitated using lime Stone.
- In vegetable and fruit canning operations, wastewater lime can helps in clearing wastewaters and supports the processing of citrus pulp by-products.
3. Acid Mining Waste
8. Agriculture Industry
Limestone deposits with a high calcium carbonate content around 90% can be effictively used by the farming sector. By crushing the limestone, various grades (based on particle size), these products are being marketed as ‘agricultural lime.
The calcium carbonate content of the limestone is capable of neutralizing soil acidity that directly affects the crops, by freeing up some of the soil minerals, such as phosphates, and making them available for absorption into the plant.