What equipment is used for gasification slag grinding?

Coal gasification technology, as an important clean utilization technology for coal, has developed rapidly, but a large amount of gasification slag is generated during the coal gasification process. At present, the comprehensive utilization rate of gasification slag is low and has not yet been utilized on a large scale. Stacking and landfill are still the main disposal methods of gasification slag, which not only occupy a large amount of land, but also cause soil and water pollution. Therefore, the resource utilization of gasification slag is an urgent need for high-quality development of the national ecological environment.

Gasification slag is a product generated by a series of decomposition and combination reactions of minerals in coal during the gasification process. The slag discharged from the bottom slag outlet of the gasification furnace is coarse slag, and a small portion of particles carried away by the synthesis gas form fine slag through subsequent washing, flash evaporation, pressure filtration, and other processes. Coarse slag and fine slag are collectively referred to as gasification furnace slag.

Both gasification slag and fly ash have certain volcanic activity. High calcium fly ash and gasification slag are used as raw materials to mix and prepare Portland cement with a specific surface area of 350 square meters/gram and a compressive strength of 48.8 MPa. Through tests on compressive strength and dry shrinkage performance, it was found that adding coarse slag after grinding to the concrete resulted in a much higher compressive strength than the benchmark concrete, and the strength continued to increase with age.

The LM series vertical roller mill of Liming Heavy Industry can grind gasification furnace slag into secondary fly ash, which can be used as a mineral admixture in concrete to improve the workability of concrete. After addition, it can reduce the water cement ratio of concrete, reduce the amount of concrete bleeding, thereby increasing its fluidity, workability, and pumpability, and maintaining good workability. The high value utilization process of finished products has received high praise from customers! If you are interested in gasification slag pulverization, please click on online customer service for consultation!