Soda flakes are widely used in glass and paper, soap, textile and other industries. As an important chemical raw material, the improvement and optimization of its production process will help to improve the production efficiency and capacity, and also has important significance for environmental protection. The production process of caustic soda flake mainly includes raw material preparation, lye preparation, crystallization, filtration, drying and packaging of finished products. The following soda flake factory will take us to understand.
　　1、Raw material preparation
　　The main raw material of caustic soda flake is salt lake brine, which contains sodium chloride and sodium carbonate and other ingredients. First of all, the brine will be filtered to remove impurities, and then add an appropriate amount of limestone for the reaction to generate calcium hydroxide precipitate.
　　2、Preparation of lye
　　Mix the reacted brine with calcium hydroxide precipitate to generate sodium hydroxide solution. In the reaction process, need to control the temperature and stirring speed to ensure that the reaction is fully carried out.
　　3、Crystallization
　　The lye solution is evaporated and concentrated, so that the water in the solution gradually decreases and the degree of supersaturation increases. When the concentration in the solution reaches saturation, crystallization begins to form. Crystallization is an important part of the crystallization process needs to control the temperature and stirring speed, in order to obtain a high purity of the crystalline material.
　　4、Filtration
　　After crystallization, a slurry containing crystals will be obtained. In order to separate out the pure crystals, filtration is required. Filtration can use cyclone or filter press and other equipment to separate the solid particles in the slurry.
　　5、Drying
　　The crystallized material obtained after filtration also contains a certain amount of water, which needs to be dried. Drying can use spray dryer, fluidized bed dryer and other equipment, the water in the crystalline material will evaporate, so that it reaches the required moisture content.
　　6、Packaging of finished products
　　After drying the crystallized material is the finished caustic soda flake. The finished products are packed, and you can use woven bags, plastic bags and other packaging materials, so as to facilitate storage and transportation and sales.
　　The whole production process of caustic soda flake needs to strictly control the parameters of each link to ensure product quality and production efficiency. At the same time, the wastewater and waste gas generated in the production process also need to be reasonably treated to reduce the impact on the environment.