Product: alfalfa hay,
Protein :>16%,
Moisture: 12% max,
Purity: >95%,
Color:>85% green,
Bales size: 220*110*70cm,
Bales weight:420-440kg,
Packaging: Bale,
Place of Origin: Egypt,
Incoterm: FOB Damitta seaport, Egypt,
Price: 375$ per Ton,
Supply Ability: 500 tons per month,
Payment Term: L/C at sight or T/T,
Calcium carbonate, or CaCO3, comprises more than 4% of the earths crust and is found throughout the world. Its most common natural forms are chalk, limestone, and marble, produced by the sedimentation of the shells of small fossilized snails, shellfish, and coral over millions of years. Although all three forms are identical in chemical terms, they differ in many other respects, including purity, whiteness, thickness and homogeneity. Calcium carbonate is one of the most useful and versatile materials known to man.
Uses
Paper, Plastics, Paints, and Coatings: Calcium carbonate is the most widely used mineral in the paper, plastics, paints and coatings industries both as a filler and due to its special white color - as a coating pigment. In the paper industry it is valued worldwide for its high brightness and light scattering characteristics, and is used as an inexpensive filler to make bright opaque paper. Filler is used at the wet-end of paper making machines, and calcium carbonate filler allows for the paper to be bright and smooth. As an extender, calcium carbonate can represent as much as 30% by weight in paints. Calcium carbonate also is used widely as a filler in adhesives, and sealants.
Personal Health and Food Production: Calcium carbonate is used widely as an effective dietary calcium supplement, antacid, phosphate binder, or base material for medicinal tablets. It also is found on many grocery store shelves in products such as baking powder, toothpaste, dry-mix dessert mixes, dough, and wine. Calcium carbonate is the active ingredient in agricultural lime, and is used in animal feed. Calcium carbonate also benefits the environment through water and waste treatment.
Building Materials and Construction: Calcium carbonate is critical to the construction industry, both as a building material in its own right (e.g. marble), and as an ingredient of cement. It contributes to the making of mortar used in bonding bricks, concrete blocks, stones, roofing shingles, rubber compounds, and tiles. Calcium carbonate decomposes to form carbon dioxide and lime, an important material in making steel, glass, and paper. Because of its antacid properties, calcium carbonate is used in industrial settings to neutralize acidic conditions in both soil and water
Element
CaCo3 99.20
MgCo3 0.20
Fe2O3 0.01
HCI 0.20
Whiteness 96.30
Yellowness 0.70
Size : 20-8 Micron
Coated Calcium carbonate
CaCo3: 99.40%
CaO: 55.6%
MgO: 0.08%
Fe2O3 : 0.03%
Al2O3: 0.15%
SiO2: 0.34%
L.O.I: 44.1%
HCI insoluble content 0.20%
Whiteness: 98%
Brightness: 96.7%
Moisture : 0.20%
Hardness by Mohs: 3
Density: 2.73g/cm3
PH value: 9
size: 12 micron
Silica
Also called silica sand or quartz sand, silica is made of silicon dioxide (SiO2). Silicon compounds are the most significant component of the Earthâ??s crust. Since sand is plentiful, easy to mine and relatively easy to process, it is the primary ore source of silicon. The metamorphic rock, quartzite, is another source.
Silicon (Si) is a semi-metallic or metalloid, because it has several of the metallic characteristics. Silicon is never found in its natural state, but rather in combination with oxygen as the silicate ion SiO44- in silica-rich rocks such as obsidian, granite, diorite, and sandstone. Feldspar and quartz are the most significant silicate minerals. Silicon alloys include a variety of metals, including iron, aluminum, copper, nickel, manganese and ferrochromium.
Uses
Ferrosilicon alloys are used to improve the strength and quality of iron and steel products. Tools, for instance, are made of steel and ferrosilicon.
In addition to tool steels, an example of â??alloy steels,â?? ferrosilicon is used in the manufacture of stainless steels, carbon steels, and other alloy steels. An alloy steel refers to all finished steels other than stainless and carbon steels. Stainless steels are used when superior corrosion resistance, hygiene, aesthetic, and wear-resistance qualities are needed.
Carbon steels are used extensively in suspension bridges and other structural support material, and in automotive bodies, to name a few.
Silicon is used in the aluminum industry to improve castability and weldability. Silicon-aluminum alloys tend to have relatively low strength and ductility, so other metals, especially magnesium and copper, are often added to improve strength.
In the chemicals industry, silicon metal is the starting point for the production of silianes, silicones, fumed silica, and semiconductor-grade silicon. Silanes are the used to make silicone resins, lubricants, anti-foaming agents, and water-repellent compounds. Silicones are used as lubricants, hydraulic fluids, electrical insulators, and moisture-proof treatments.
Semiconductor-grade silicon is used in the manufacture of silicon chips and solar cells. Fumed silica is used as a filler in the cement and refractory materials industries, as well as in heat insulation and filling material for synthetic rubbers, polymers and grouts.
Silica is used in ceramics and in making glass.
Silicon is considered a semiconductor. This means that it conducts electricity, but not as well as a metal such as copper or silver. This physical property makes silicon an important commodity in the computer manufacturing business.
Element Type 1 Type 2
SiO2 99.52 99.558
Fe2O3 0.014 0.016
Al2O3 0.142 0.021
TiO2 0.022 0.020
CaO 0.070 0.010
MgO 0.007
Talc
Magnesium silicate
The term talc refers both to the pure mineral and a wide variety of soft, talc-containing rocks that are mined and utilized for a variety of applications. Talc forms mica-like flakes. Talc is the softest mineral on the Mohs hardness scale at 1 and can be easily cut and crushed. Talc has perfect cleavage in one direction. This means that it breaks into thin sheets. As a result, it feels greasy to the touch (which is why talc is used as a lubricant).
Uses
Ground talc is used as an ingredient in ceramics, paper, paint, roofing, plastics, cosmetics, talcum and baby powders, and a variety of other assorted uses such as making rubber and plastics.
Element Type 1
SiO2 60-62 60-62 60-61 60-61 57-58 55-56 52-54
MgO 31-32.5 31-32.5 30-31 30-31 29-30 27-28 25-26
Al2O3 0.3-0.5 0.3-0.5 0.5-1.2 0.5-1.0 1.4-1.8 2-2. 2.8-3.2
Fe2O3 0.1-0.2 0.1-0.2 0.25-0.40 0.20-0.40 0.5-0.7 0.75-0.80 0.9-1
CaO 0.3-0.5 0.14-0.3 0.6-1.1 0.5-1.0 1.5-2.0 2.3-2.9 3.2-4.5
Na2O
