The Application of Sand Maker in Dry-mixed Mortar Making Industry

As the development of building industry, the need of aggregates, dry-mixed mortar, and concretes become more urgent. At the same time, the requirement for sand becomes higher, especially, in special mortar making and high quality concrete producing industries. The natural sands that we need become fewer and fewer. And the quality of natural sands becomes low. Besides, natural sands are too fine and have much mud. So the application of machine-made sands becomes wider and wider.

The materials of old dry-mixed mortar are mainly natural sands. However, natural sand is a local resource. And as the development of building industry, the natural sands in many places become fewer and fewer. What is worse, there is no any natural sand in some places. Natural sands can not grow in a short time. And it is not convenient to transport them for a long distance. But the need of sands increases by years. As a result, the price of natural sands fluctuates, which restricts the developing of building industries. We must find a new material source to solve the shortage of natural sands fundamentally.

We had better use construction and industrial waste residue to produce dry-mixed mortar, which is environmental. The ingredients of dry-mixed mortar are cement, gypsum, lime, and etc. The mainly aggregates are sand, silica sand, limestone, dolomite, expanded perlite, and etc. Mineral admixtures are mainly industrial products, industrial waste and some natural minerals, for example, slag, fly ash, volcanic ash, and fine silica powder. There are also water-thickening materials and various additives.