Process for preparing 4A type zeolite

摘要

This invention relates to a method of producing a high degree of whiteness is 4A type zeolite, more specifically, aluminum mixing aluminum dross and sodium hydroxide solution by-product in the refining process at a specific ratio and, by itself, the reaction conditions at a temperature and pressure conditions generated in the reaction mixture, such as coloring components, unlike the conventional method and made from high temperature and high pressure spilling can extract the sodium aluminate is not substantially contain impurities into the aqueous phase, this aqueous solution of sodium silicate and hydro gel to the reaction, aging (ageing) by hydrothermal synthesis reaction and at the same time producing the excellent whiteness purity over the course of the zeolite There will still be available, as well as circulation of the mother liquor Improvement of the production cost savings and environmentally friendly method of producing an improved effect on 4A zeolite having at the same time.