Limestone powder is a white powdery substance mainly composed of calcium carbonate, which is divided into two categories: industrial and food grade. Industrial lime powder is mainly used in the construction field, including the preparation of mortar, silicate products, and road base materials; Food grade calcium carbonate is added as a calcium supplement to foods such as flour and dairy products. According to the preparation process, it can be divided into heavy calcium carbonate (obtained by physical crushing) and light calcium carbonate (obtained by calcination).

physical property:

Limestone powder is white or slightly colored and has high moisture absorption. Its particles are delicate and easy to disperse in water to form a suspension. In addition, lime powder also has good covering and coloring power, and is commonly used in the production of coatings, paints, and other products.

chemical property:

1. Alkaline: Limestone powder is a strongly alkaline substance that can undergo neutralization reactions with acids. This characteristic makes it widely used in the field of environmental protection, such as treating acidic wastewater and neutralizing soil acidity.

2. Corrosivity: Due to the strong alkalinity of limestone powder, it has a certain degree of corrosiveness to sensitive areas such as the skin and eyes. Therefore, safety precautions should be taken when using limestone powder.

3. Hardenability: Limestone powder will gradually harden when mixed with water, releasing a large amount of heat during this process. This characteristic makes limestone powder widely used in the construction field, such as making lime mortar, lime gypsum board, etc.