Release time: 17:24, November 10, 2020 Publisher: Dongmeng Road & Bridge Machinery Co., Ltd.
Application of dry process environmental protection manufactured sand production line in dry mixed mortar field
Dry mixed mortar, usually called hydraulic cement mixed mortar, refers to a kind of granular or powdery material formed by physical mixing of fine aggregate, inorganic cementitious material (such as cement) and additives (such as polymer) in a certain proportion, which is transported to the construction site in the form of bag or bulk, and can be directly used after mixing with water. In the construction industry, dry powder mortar plays the role of bonding, lining, protection and decoration with thin layer, which is widely used in construction and decoration engineering.
The aggregate used in the original dry mixed mortar is mainly natural sand. With the shortage of natural sand resources and the introduction of mining restriction policies in various regions, the price of sand is soaring, and machine-made sand is increasingly used in dry mixed mortar, concrete mixing station and other construction projects.
Machine made sand refers to the rock particles which are crushed and screened by the crushing and sand making equipment, and meet the technical indexes of fineness modulus of 2.6-3.0, stone powder content of 3% - 8%, cumulative screen residue of 1, 3, 6, 8, 9, needle flake < 8%, water content of 3% - 5%.
Compared with the shortage of river sand, machine-made sand has a wide range of materials. Various stones, stones, stone chips, mine tailings, leftovers and slag can be used as raw materials of machine-made sand. Moreover, the grain shape processed by professional sand making machine is full, round, even graded, with small mud content, which meets the sand standard for dry mixed mortar, which can ensure the quality of dry mixed mortar and greatly reduce the cost of dry mixed mortar 。
At present, we have established a number of dry process environmental protection machine-made sand production lines in the world. The manufactured sand is used in dry mixed mortar, commercial mixing station and other construction fields, and is welcomed by the building materials market.
As for the dry process environmental protection machine-made sand production line, it is generally equipped with fixed production line, fixed production line and Vu tower type sand production line. The main machine used in the fixed sand production line is vertical shaft impact breaker. The supporting equipment generally includes crusher, feeder, vibrating screen, belt conveyor and other equipment. At present, the environmental protection situation is grim, and the production line is generally built in the workshop or shed.
The mobile machine-made sand production line is developed on the basis of the fixed production line. Its advantages are that it is assembled on the vehicle mounted system, crushing, screening and conveying are integrated. Without fixed installation, the sand making operation can be started when the parts are expanded, and another production site can be changed after the production, which is more convenient and flexible.