Salt mud neutralizer and preparation method thereof

• Main Authors: SU ZHIJUN, CUI YAOXING, HE SHOUMEI, LIU HUAN, NIU YONGTAO, HAO JIANBO, CHEN LIUPING
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2023
• Subjects: CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; INORGANIC CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention belongs to the technical field of environmental protection and solid waste resource utilization, and particularly relates to a salty mud neutralizer and a preparation method thereof. The method comprises the following steps: stirring salt-making raw brine and caustic soda at normal temperature to react, filtering a reaction system through a ceramic membrane, introducing a small amount of CO2 into filtrate, carrying out secondary filtering through the ceramic membrane, stirring the filtrate and sodium carbonate to react, and filtering the reaction system for three times to obtain filtrate, namely salt-making refined brine, and feeding the salt-making refined brine into an evaporation system to make salt. And washing and dehydrating filter residues to obtain the salty mud neutralizer. According to the method, impurities such as iron and manganese are removed, the content of magnesium ions is controlled in the impurity removal process, trace magnesium ions existing in the salty mud have an inhibiti