Calcium oxide is an inorganic compound that is hygroscopic, white and fine, and appears light yellow or gray when containing impurities. It is widely used in industry and daily life, such as sewage treatment, flue gas desulfurization, medicine and food, etc. Do you know how to distinguish the quality of calcium oxide? Let's follow the editor to learn more about it!

1. The level of temperature.

Take 100 grams of quicklime and add 200 grams of water. Lime with a calcium oxide content of about 90% has a strong reaction, and the temperature can reach over 90%. It will decompose into calcium oxide, becoming milky white with a delicate texture and a pure white color.

2. Beauty level.

After visual investigation, take some digested lime milk and check the fineness of the lime in your hands. Assuming it is very delicate and has a strong sense of lubrication, it will be proven to be high-quality lime.

3. How much residue is there.

Continuously adding 400 grams of water to the digested lime milk and detecting the proportion of undigested solid residue after complete response can determine the quality of quicklime. The less residue, the better the quality of lime. Generally speaking, residue less than 10% is good lime.

4. Packaging quality.

When purchasing lime, in addition to checking the price, the color, packaging, stability, etc. of the lime should also be checked. It is important to pay attention to whether it is produced by a legitimate manufacturer. Generally, products produced by legitimate manufacturers will have a factory name, address, brand, trademark, etc. If not specified, purchase with caution