5 Amazing Ways Calcium Hydroxide Transforms Industries and Everyday Life

Today we will learn about a very important compound – calcium hydroxide. Let’s learn about its properties, uses and its importance in science and everyday life!

• It is used in agriculture to reduce soil acidity and improve soil structure;
• In winter, trees are protected from insects during the winter, and 80 cm of lime slurry is applied above the roots of the trees.
• Bordeaux mixture, a pesticide, is prepared with lime milk and copper sulfate aqueous solution in a certain proportion. This sky blue viscous suspension pesticide used for fruit trees and vegetables eliminates pests and diseases through the copper element in it. It not only utilizes the property of calcium hydroxide to react with copper sulfate, but also utilizes the characteristic of calcium hydroxide being slightly soluble in water to make the liquid viscous, which is conducive to the liquid adhering to the branches and leaves of plants. In addition, calcium hydroxide reacts with carbon dioxide in the air to form calcium carbonate that is slightly soluble in water, which is also conducive to the liquid adhering to the surface of plants for a period of time without being washed away by rain.

It is mainly used to neutralize sulfur dioxide, sulfur trioxide and a small amount of acidic gases such as fluoride ions and chloride ions, so that the sulfur content of the exhaust flue gas meets environmental protection standards.

In this industry, in order to coat the metal surface, impurities (including metal oxides) on the surface of the metal plate must be removed first, so dilute sulfuric acid must be used to remove them first. The wastewater generated during the production process must be neutralized with calcium hydroxide.

Due to its strong activity and loose structure, calcium hydroxide is widely used as a food additive.

Application of calcium hydroxide in refractory materials

When producing silica bricks, calcium hydroxide can be used as an additive to enhance the strength and viscosity of the bricks. Silica bricks are made of silica with a SiO4 content of not less than 96% as raw material, and mineralizers (such as iron scale, lime milk) and binders (such as molasses and sulfite pulp waste liquid) are added, and the mixture is made through mixing, molding, drying, and firing.