Is quicklime a plaster powder?
Transparent. Vitreous luster, cleavage surface, pearl luster, fibrous aggregate, silky luster. The cleavage is extremely complete and medium, and the cleavage plate splits into a rhombus with an angle of 66 and 114. Sexual fragility. Hardness 1.5~2. There is a slight change in direction. Relative density 2.3. Gypsum powder is one of the five gel material, occupies an important position in the national economy, widely used in construction, building materials, industrial mold and art model, chemical industry and agriculture, food processing and medicine and other cosmetic applications, is an important industrial raw materials.
Usually white, colorless, colorless transparent crystals known as gypsum, and sometimes because of impurities and ash, light yellow, light brown and other colors. White streak.
Lime as the main component of calcium oxide, usually method was mainly composed of calcium carbonate rock, calcined at high temperature, then decomposition of carbon dioxide and calcium oxide (chemical formula: CaO, which is also known as lime, marble).
