What Is Hydrated Lime?

Quick lime, also known as calcined lime, is mainly composed of calcium oxide. It is usually produced by calcining natural rocks whose main ingredient is calcium carbonate, which can be decomposed to form carbon dioxide and calcium oxide when calcined at high temperature. Marble).

The main ingredient is calcium oxide (CaO) (CalciumOxide; Lime; QuickLime)

Identification: Limestone:

raw material:

In actual production, in order to accelerate the decomposition, the calcination temperature is often increased to 1000-1100 ° C. Because of the large size of the limestone raw material or the uneven temperature distribution in the kiln during calcination, lime often contains underfired lime and lime.

Quicklime is a common desiccant used to remove water vapor by chemical absorption. It is also used in iron and steel, pesticides, medicine, desiccants, tanning, and alcohol dehydration. Especially suitable for

Quick lime usually contains

Lime is divided into quicklime and slaked lime. The main component of quicklime is calcium oxide (CaO). The limestone with high calcium carbonate (CaCO) content is ventilated.

1. Can be used as a filler, for example: used as an epoxy adhesive filler;

2. Used as analytical reagents, carbon dioxide, sulfur dioxide absorbent, spectral analysis reagents, high-purity reagents for epitaxial and diffusion processes in semiconductor production, laboratory ammonia drying and alcohol dehydration, etc. for gas analysis;

3. Used as raw materials, can be used to manufacture calcium carbide, soda ash, bleaching powder, etc., also used in tanning, wastewater purification, calcium hydroxide and various calcium compounds;

4. It can be used as a building material, metallurgical flux, cement accelerator, phosphor flux.

5. Used as vegetable oil decolorant, drug carrier, soil improver and calcium fertilizer;

6. Can also be used for refractory materials and desiccants;

7. It can be used to prepare agricultural machinery No. 1 and No. 2 adhesives and underwater epoxy adhesives, and also used as a pre-reactant with 2402 resin;

8. For acid wastewater treatment and sludge conditioning;

9. It can also be used as a boiler deactivation protection agent, utilizing the moisture absorption capacity of lime to keep the metal surface of the boiler water vapor system dry and prevent corrosion, which is suitable for long-term deactivation protection of low-pressure, medium-pressure, and small-capacity drum boilers;

10. Calcium hydroxide can be prepared by reacting with water. The reaction equation is CaO + HO = Ca (OH) ₂ , which belongs to the compound reaction.

1. Tea stains in teapots and cups are difficult to wash with water. If you use hydrated lime to make a paste, you can quickly remove the tea scale.

2. The greasiness inside the glass is difficult to clean. Put some slaked lime, pour a little warm water, and then stretch into the bottle brush to stir.

1. The shorter the operating process, the better. It should be placed in a proper place in the packaging container to play a role of sealing and absorbing moisture.

2. Store in a dry warehouse to prevent moisture and avoid contact with acids.

3. Avoid moisture during transportation, and handle it carefully to prevent damage to the package and affecting product quality.

4. It is forbidden to eat. In case of entrance, rinse your mouth with water and seek medical advice immediately. (Remember not to drink water)

1.National Military Standard GJB2714-96

2.Refer to the US military standard MIL-D-3464D General Specification for Desiccant

Chemical formula: CaO

Molecular weight: 56.08

Specific gravity: 3.25-3.38

Melting point: 2580 -boiling 2850