How to produce desulfurized limestone powder for power plants

Limestone is an ore resource with abundant reserves and widespread distribution in my country. With the rapid development of the limestone industry, limestone has a wide range of uses. It is widely used in building materials and industrial raw materials, as well as limestone powder for desulfurization in thermal power plants. How to produce desulfurized limestone powder for power plants? As a manufacturer of desulfurization mills for power plants, GUIKUANG Machinery will analyze and answer your questions today.

The limestone-gypsum flue gas wet desulfurization process is a commonly used desulfurization process in power plants. More than 90% of domestic thermal power plants use this method. The principle is to use the power plant desulfurization mill to grind the limestone into stone powder, and then make the limestone into a slurry as The desulfurization absorbent is in contact and mixed with the flue gas entering the absorption tower. The sulfur dioxide in the flue gas reacts chemically with the calcium carbonate in the slurry and the incoming air, and finally generates gypsum, which separates the sulfur dioxide in the flue gas and avoids the large amount of sulfur dioxide in the flue gas. Environmental pollution caused by emissions. How to produce desulfurized limestone powder for power plants?Since the limestone slurry in the absorption tower in the desulfurization system needs to be replaced regularly to maintain activity, a special power plant desulfurization grinding mill is required to process limestone powder to prepare active limestone slurry. Larger stones must be coarsely crushed first. Large limestone materials are uniformly fed by a vibrating feeder through the silo and transported to the jaw crusher for coarse crushing. After the coarsely crushed materials are screened by the vibrating screen, they are conveyed by a belt The conveyor transports it to the impact crusher; secondly, it carries out medium and fine crushing. After the coarsely crushed materials transported to the impact crusher are crushed by the impact crusher, a circular vibrating screen is used to screen the materials crushed by the impact crusher, and the larger particles are returned to The impact crusher crushes again; if finer products or shaping are needed, the crushed materials are sent to the sand making machine for further crushing and shaping; finally, they are ground again, and the crushed limestone small pieces are sent to the silo through the elevator. Then it is sent into the grinding chamber of the mill uniformly and quantitatively through the vibrating feeder for grinding.