Sintering Of Alumina In A Row Carbonate Decomposition Process And Device Research

Al-sodium carbonate decomposition of alumina sintering is the key to the production process, the process of production of aluminum hydroxide has been a long time equipment and installation process conditions, with a small size, high levels of impurities shortcomings, Unable to meet market demand, the sintering of alumina powder products are facing a situation out, in order to improve the quality of alumina products, the production of large particles, impurities content of less aluminum hydroxide product, the process conditions of the carbonization must be optimizated.The main thesis of this study sintering aluminum hydroxide production process of carbonization technology and equipment.1. Sand-like aluminum hydroxide in order to optimize the target rate, the analysis of the decomposition of carbonate production process of aluminum hydroxide process, the speed of reaction of carbonation in the process of decomposition of carbon dioxide absorption rate, the crystallization of aluminum hydroxide precipitation, sand-like rate of the law, Crystallization increase the number of slots in a row on the decomposition of carbonate production of aluminum hydroxide to optimize the process, the extension of reaction time, the decomposition rate of change in the slot matching control; and, according to analysis of experimental data to verify the carbonate decomposition process of continuous optimization to improve the crystallization of the hydroxide precipitation Size aluminum, to reduce the effect of impurity content and function.2. Optimizing the carbonation in a row break down industrial production process control; analysis of the seed particles of different seeds to add to the amount of aluminum hydroxide particle size and content of silicon dioxide, a comparison test to optimize the effectiveness of seed; analysis of the aluminum acid Sodium solution to the purity of aluminum hydroxide particle size and concentration of impurities, continuous optimization of the final decomposition of carbonate decomposition rate, control of the silica precipitation to increase grain output of aluminum hydroxide.3. Research sodium aluminate solution for the decomposition of carbonate and stirred tank to feed device, respectively, in the form of mixing, size, structure from the bottom, tailgate, speed, and other parameters are optimized, and analysis of the carbon in a row at the conditions have been expected Ways to enhance decomposition of carbonate production of aluminum hydroxide in the process of carbon dioxide absorption rate and reduce the process of mixing aluminum hydroxide particles broken, aluminum hydroxide to increase particle size;Aluminum for sodium carbonate in the process of decomposition of pipelines and equipment on the surface crystallization of this adverse phenomenon, the analysis of the different parts of different incentives, technology and devices from various operating conditions are optimized, due to the elimination of crystal caused by the poor accuracy of the operations and equipment Easily damaged. Sodium aluminate solution to achieve continuous carbonization of industrial production process control simple processes running balance and stability.Research results in the domestic production of alumina sintering promotion, will effectively enhance the quality of aluminum hydroxide, aluminum oxide to improve our international competitiveness.