1, calcium hydroxide can be used as raw material for producing calcium carbonate.
2. Calcium hydroxide is alkaline, so it can be used to reduce the acidity of soil, thus improving the soil structure. Bordeaux solution in pesticides is made of lime milk (calcium hydroxide dissolved in water) and copper sulfate aqueous solution in a certain proportion. In winter, trees are protected against insects and overwinter, and 80 cm lime slurry is coated above the roots.
3. High-quality products are mainly used to produce epichlorohydrin and propylene oxide.
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4. It can be used as an additive for rubber and petrochemicals. If it is added to lubricating oil in petroleum industry, it can prevent coking, sludge deposition, neutralization and anticorrosion.
5. Used for preparing bleaching powder, bleaching powder essence, disinfectant, acidulant, astringent, hard water softener, soil acidity inhibitor, depilatory, buffer, neutralizer, curing agent, etc.
6. Calcium hydroxide will react with carbon dioxide in the air to produce water-insoluble calcium carbonate. In the industrial production of sugar, firstly, calcium hydroxide is used to neutralize the acid in syrup, and then carbon dioxide is introduced to react with the remaining calcium hydroxide to generate precipitate, which is filtered out to reduce the sour taste of sugar.
Secondly, the application of calcium hydroxide in architecture.
The lower turbid liquid after adding water to calcium hydroxide is lime milk, which can be used in construction industry. Calcium hydroxide is widely used in buildings.
1, lime milk and mortar, hydrated lime powder or lime paste mixed with a large amount of paint. Lime paste or hydrated lime powder can be used to prepare lime mortar or cement-lime mixed mortar for masonry or plastering engineering.
2. Lime stabilized soil: The mixture obtained by mixing, compacting and curing hydrated lime powder or quicklime powder into various crushed or loose soils is called lime stabilized soil. Include lime soil, lime stabilized macadam soil, lime macadam soil, etc. Lime stabilized soil has certain strength and water resistance. It is widely used as the foundation of buildings, the cushion of the ground and the pavement base of roads.
3. Silicate products: containing lime (hydrated lime powder or quicklime powder) and siliceous materials (sand, fly ash, volcanic ash, slag, etc.). ) is the main raw material, which can be made into bricks, blocks and other products after batching, mixing, molding and curing. Because the internal cementing substance is mainly hydrated calcium silicate, it is called silicate products, and lime-sand bricks and fly ash bricks are commonly used.
4. Lime milk coating The slurry obtained by adding a large amount of water to lime is lime milk. Mainly used for indoor painting with low requirements.
5. Lime mortar: Lime plaster or hydrated lime powder can be used to prepare lime mortar or cement-lime mixed mortar for plastering and building lime soil. Slaked lime powder mixed with clay is called lime soil, followed by sand, stone chips, slag, etc. Is added to make lime soil. Lime soil and concrete are widely used in the foundation of buildings and the cushion of roads.