Effect of Electromagnetic Fields on Calcium Carbonate Solution Crystallization and Magnetic Memory Effect

The absorbance values of specific configuration solutions under different magnetic treatment conditions are studied using the UV method based on the circulating dynamic simulation experiment platform for the anti‐scaling of electromagnetics. Additionally, the relationship between the absorbance value and solution concentration is determined. Moreover, the nucleation rate of CaCO 3 is calculated using the absorbance value. The influence of the specific magnetic field on nucleating rate is analyzed. Subsequently, the magnetic memory effect and time of CO 3 −2 and water are studied. Results show that the magnetic treatment changes the nucleation rate of CaCO 3 and the critical oversaturation of the solution by acting on CO 3 −2 . This treatment also can promote the dissolution of CaCO 3 in water by changing the properties of water. These two aspects all exert memory effects; however, their respective memory times are different. Moreover, the results show that the magnetic treatment can reduce the critical oversaturation of the CaCO 3 solution and accelerate the nucleation rate. Furthermore, the memory time of the magnetic field acting on CO 3 −2 and the properties of water are 45 min and 78 h, respectively.