Limestone is an ore resource with abundant reserves and wide distribution. With the rapid development of the limestone industry, limestone has a wide range of uses, and is used in a large number of building materials and industrial raw materials. Today, let’s learn about limestone milling and processing limestone for desulfurization in thermal power plants. pink.
Limestone powder plays an important role in the desulfurization of thermal power plants. It can be said that limestone powder must be used for desulfurization in thermal power plants. What equipment do you need to use to process the limestone powder used in power plant desulfurization?
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. It is mixed with the flue gas entering the absorption tower, and 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 removes the sulfur dioxide in the flue gas and avoids the pollution caused by a large amount of emissions. environmental pollution caused.
Usually, a desulfurization pulverizer is also required to assist production. Since the limestone slurry in the absorption tower in the desulfurization system needs to be replaced regularly to maintain its activity, it is necessary to equip a special desulfurization pulverizer in the power plant to process the limestone powder to prepare the active limestone slurry.
The production of limestone powder for desulfurization in thermal power plants needs to be equipped with a complete limestone grinding powder production line. If the raw material of limestone is relatively large, it may be necessary to configure crusher equipment to perform pre-crushing processing of limestone, and then use ultra-fine pulverizer and other grinding equipment. to be processed.
Larger stones should be coarsely crushed first. The large limestone materials are evenly fed by the vibrating feeder through the silo, and transported to the jaw crusher for coarse crushing. The conveyor is transported to the impact crusher; secondly, the medium and fine crushing is carried out. After the coarse crushed materials sent to the impact crusher are crushed by the impact crusher, the circular vibrating screen is used to screen the impact crushed materials, and the larger particles are returned to the impact crusher. The impact crusher is crushed again; if finer products or shaping are required, the crushed materials are sent to the sand making machine for further crushing and shaping; finally, the powder is re-ground, and the crushed limestone small pieces are sent to the silo by the elevator. Then, it is evenly and quantitatively sent to the grinding chamber of the mill through the vibrating feeder for grinding.
To sum up, if you want to process limestone powder, a grinding line needs equipment such as jaw crusher, impact crusher and pulverizer.