White Powder Quicklime Einecs 215-138-9 Cao CAS 1305-78-8 Calcium Oxide

Product Description

White powder Quicklime EINECS 215-138-9 CaO CAS 1305-78-8 Calcium Oxide

Product Description

Calcium oxide is an inorganic compound with the chemical formula CaO, commonly known as quicklime. The physical property is a surface white powder, impure ones are gray white, and when containing impurities, it appears light yellow or gray, with hygroscopicity. 
 

Test items	Data
CaO	≥70-90%
PH	8.0-10.0
HCL insoluble	≤0.1%
Moisture	≤0.3%
Fe content	≤0.05%
MgO content	≤0.5%
SiO2 content	≤0.8%
Density	≤3.350 g/ml
Melt point	2572ºC
Appearance	White powder

 

 

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  2.93 g/mL at 25 °C(lit.)

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Product Parameters

Item	Spec
Product Name	Calcium oxide Quick Lime Powder CaO 80%-95%
Other name	Limestone powder,Quick Lime
Raw Material	Limestone
CAS No.	1305-78-8
Grade	Agriculture Grade, Industrial Grade
MF	CaO
EINECS No.	215-138-9
Purity	90%
Appearance	White Powder,White lump
CaO	≥90%
MgO	≤1.4%
HCL insoluble	≤0.9%
Heavy mental	≤0.1%
Loss on ignition/%	≤3.8%
Fineness(0.045mm Test sieve residue)                (0.075mm Test sieve residue )	≤4.8% ≤0.9%

Specification and model of Calcium oxide
Calcium oxide is an inorganic compound, with the following general specifications and models:
1. Industrial grade calcium oxide: mainly used in the fields of petrochemicals and building materials. Its main specifications are: purity above 95% and fineness below 325 mesh.
2. Agricultural grade calcium oxide: mainly used in agricultural production to promote plant growth and prevent diseases. Its main specifications are: purity above 80% and fineness below 120 mesh.
3. Food grade calcium oxide: mainly used in food additives, such as pastries, bread, dairy products, etc. Its main specifications are: purity above 98% and fineness below 400 mesh.
4. Medical grade calcium oxide: mainly used in the pharmaceutical field, such as drug additives, manufacturing of bone growth materials, etc. Its main specifications are: purity above 99% and fineness below 800 mesh.

 

Detailed Photos

 

 

 

 

  

Packaging & Shipping

Packing: 50kg/PP or PE bag ; 25kg/PP or PE bag; 1MTJumbo bag or according to customers' requirements.

                  20-25MT will be loaded in per 20'FCL container.
 

Attention and Storage:

The product is liable to absorb moisture and clot due to long-term exposure, so shady, cool and ventilated environment is needed

Factory Show

FACTORY SHOWS

 

 

Application

The use of calcium oxide

1. The main use of quicklime is in the basic oxygen steelmaking process. Its usage is approximately 30 to 50 kilograms (65 to 110 pounds) per ton of steel. Quicklime neutralizes acidic oxides to produce alkaline slag.

2. Ground quicklime is used to produce aerated concrete blocks, with a density of approximately 100. 0.6-1.0g/cm3 (9.8-16.4g/cubic inch).

3. Quicklime and hydrated lime can significantly improve the bearing capacity of clay, as they react with finely ground silica and alumina to form calcium silicate and aluminate salts, exhibiting adhesive properties.

4. Use a small amount of quicklime in other processes; For example, the production of glass, calcium aluminate cement, and organic chemicals.

5. Heat: Quicklime releases heat energy from the formation of hydrates, calcium hydroxide. When it hydrates, an exothermic reaction occurs and the solid expands. By heating water to red to reverse the hydration reaction, hydrates can be converted back into quicklime. Combining water with approximately 3.1 kilograms (6.8 pounds) of quicklime yields calcium hydroxide and 3.54 megajoules of energy. This process can be used to provide convenient portable heat sources, such as on-site food heating, cooking, and heating water in self heating tanks without open flames. This heating method can be used to sell cooking kits.

6. Also known as a food additive of the Food and Agriculture Organization, it serves as an acidity regulator, flour processing agent, and fermentation agent.

7. Light: When quicklime is heated to 2400 ° C (4350 ° F), it emits strong light. This form of lighting is known as the vanguard and was widely used in theatrical production before the invention of electrical lighting.

8. Cement: Calcium oxide is a key component in the production of cement.

9. As a cheap and widely used alkali. About 50% of the total production of quicklime is converted to calcium hydroxide before use. Both fast and hydrated lime are used for the treatment of drinking water.

10. Petroleum industry: Water detection paste contains a mixture of calcium oxide and phenolphthalein. If the paste comes into contact with water in the fuel storage tank, CaO reacts with water to form calcium hydroxide. Calcium hydroxide has a sufficiently high pH value to give phenolphthalein a bright purple red color, indicating the presence of water.

11. Calcium oxide is used in the chemical recovery of Kraft pulp mill 
12. Gypsum: Archaeological evidence suggests that during the Pre pottery Neolithic period, humans used limestone based gypsum for flooring and other purposes, and this type of limestone floor was used until the late 19th century.

13. Chemical or electric power production: solid sprays or calcium oxide slurry can be used to remove sulfur from the exhaust stream in a process called flue gas desulfurization.

14. Mining: Compressed lime cylinders use the exothermic properties of quicklime to break rocks. Drill a blast hole in the rock in the usual way, and place and compact the sealed cylinder of quicklime. Then a quantitative amount of water is injected into the cylinder, and the resulting steam release and a larger amount of residual hydrated solids separate the rocks. If the rock is not hard, this method will not work.

FAQ

 

1. who are we?
We are based in Hebei, China, start from 2009,sell to Central America(16.00%),Mid East(15.00%),North America(12.00%)

,Southeast Asia(12.00%),Africa(10.00%),South Asia(8.00%),South America(8.00%).

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

 

3. why should you buy from us not from other suppliers?
We have a strong technology research and development capabilities, strong machining strength, as well as in Southeast

Asia, North America, Europe and other regions more complete after-sales service system.

4. what services can we provide?
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