2results about How to "Operating parameters are easy to control" patented technology

The application relates to the technical field of inorganic chemical synthesis, in particular to a sodium carbonate preparation method based on ternary synthesis technology. The method takes sodium chloride, liquid ammonia and carbon dioxide as ternary raw materials, and through a'segmented carbonization-gradient temperature control crystallization-CO2 closed loop recovery-mother liquor optimization treatment' synergistic process, first, uniform crystal nuclei are induced through low-temperature pre-carbonization, then, sufficient reaction is promoted through medium-temperature deep carbonization, and the crystal structure is optimized by combining gradient cooling crystallization and aging, and the efficient recycling of carbon, ammonia and salt resources is realized. The application improves the carbon dioxide utilization rate and the product purity, optimizes the crystal particle size uniformity, reduces the energy consumption and the environmental protection load, the process is stable and easy to control, and has strong industrialization adaptability, and the obtained sodium carbonate can meet the strict requirements in the fields such as food processing, and has economic and environmental benefits.

This invention belongs to the field of industrial solid waste resource utilization technology, and relates to a method for enriching titanium dioxide in high-titanium blast furnace slag, comprising: Step S10: crushing and pretreating the high-titanium blast furnace slag to obtain fine blast furnace slag powder; Step S20: mixing the fine blast furnace slag powder with an acid solution and carrying out an acid leaching reaction to obtain a reaction slurry; Step S30: adding an alkaline substance to the reaction slurry to adjust the pH value of the slurry to 6-8, converting the silica colloids in the slurry into amorphous silica particles, completing the colloidal regulation; Step S40: performing flotation to remove impurities from the colloidal regulated slurry, removing calcium sulfate; Step S50: filtering and washing the flotation slurry to remove soluble impurities, obtaining filter residue; Step S60: drying the filter residue to obtain a product rich in titanium dioxide. This method overcomes the defects of existing dilute sulfuric acid leaching methods for enriching titanium dioxide in high-titanium blast furnace slag, such as silica colloid interference, difficult filtration, and low enrichment efficiency.