Vertical roller milling machine to improve the utilization of industrial waste materials

Fly ash is a coal-fired power plants discharge of major solid waste is one of the larger displacement of current industrial waste, the amount of slag at this stage in our country has reached more than 3,000 tons. With the development of power industry, coal-fired power plant fly ash emissions increased year by year, handling and utilization of fly ash attracted widespread attention. When the powder and water in the presence of energy at room temperature, especially in water treatment (steam curing) conditions, with calcium hydroxide or other alkaline earth metal hydroxide chemical reaction to produce a compound having a hydraulic cementitious properties, become a strength and durability of materials increases. For this reason, construction of mining machinery Vertical roller milling machine with advanced technological process, set drying, grinding, separator, upgrade in one, especially in the large grinding process, fully meet customer demand, the main technical, economic indicators have reached the international advanced level. The method of extracting alumina from fly ash by acid additive is mainly divided into acid, alkali and acid mixing. Construction Mining Machinery vertical roller mill processing and utilization equipment alumina content greater than 40% of the fly ash and limestone calcination of alumina by alkaline extraction solution, the entire production process to achieve zero emissions, zero pollution, low-cost recycling industry chain . Coal ash is a wrong place to put resources, fly ash can be used as cement admixtures, mortar, concrete, and become a component of the cement, concrete, fly ash instead of clay as a raw material to produce cement clinker raw materials, producing a sintered bricks, autoclaved aerated concrete, foam concrete, hollow brick, sintering or sintered ceramic, paving roads; constructing the dam, the construction of ports, potholes lowland farmland, coal mine subsidence area and backfill; also from sorting drift beads, beads, iron powder, carbon, aluminum and other useful substances, which drift beads, beads were used as insulation material can, refractory materials, plastics, rubber filler.