Raw materials for calcium sulfate flowing screeds

Calcium sulfate leveling mortar is becoming more and more popular. In 2019, the floor mortar market as a whole was growing positively, increasing by 2% compared with 2018, and the average growth rate of calcium sulfate leveling mortar was higher than that of traditional cement floor mortar. This is mainly due to the advantages of this type of floor mortar, which in turn are mainly due to the raw materials used. An outstanding property of calcium sulfate flowing mortar is the ability to lay large areas of mortar with few joints and a free-flowing consistency that can be easily laid by machine. The properties of the calcium sulfate binder provide the key requirement for this. It hardens with the formation of high strength and low stress, and deforms little when drying. Calcium sulfate with curing properties is now used in the production of building stucco, stucco, gypsum board, gypsum wallboard and calcium sulfate floor mortar as well as molding and molding stucco. Calcium sulfate floor mortar can only be produced using high strength calcium sulfate binder. In Germany, they are produced using natural and industrial raw materials, which must meet strict requirements for quality, consistency and long-term availability. Its foundation is calcium sulfate flowing mortar as an important element of floor structure, in the placement and subsequent use stage can actually play its unique advantages.Industrially produced calcium sulfate is usually the result of the reaction of intermediate and end products during production, such as sulfur dioxide with calcium carbonate (natural limestone powder) or calcium hydroxide (hydrated lime), or sulfuric acid with fluorite. Calcium sulfate produced in this way can be either in the form of moist, finely crushed calcium sulfate dihydrate (CaSO 4 ∙2H 2oz) or in the form of dried massive anhydrite (CaSO 4).Synthetic anhydrite is a by-product of the hydrofluoric acid production process. The starting materials for producing hydrofluoric acid are sulfuric acid and fluorite, a mineral with a color that also affects the subsequent color of anhydrite.