（Key Laboratory of New Process for Non- ferrous Metal Smelting and Rare Metal High Utilization Efficiency in Gansu Province, Northwest Research Institute of Mining and Metallurgy, Baiyin 730900, Gansu, China）
Abstract：Orthogonal tests were carried out on four factors, including magnetic field strength, concentration of aqueous solution, flow velocity and water temperature, and the influence of magnetic treatment conditions on the hardness of circulating cooling water was investigated. The test results showed that according to their influence degree, the optimum treatment conditions were the ion concentration of 900 mg/L, the flow rate of 0.8 m/s, the magnetic field strength of 0.5 T and the temperature of 30 ℃ in sequence. Under this condition, the hardness value reached 2 390 mg/L. Then when the the other treatment conditions were optimum, XRD and SEM were used to analyze the fouling samples with the ion concentration of 900 mg/L and the ion concentration of 300 mg/L. It is found that the greater the ion concentration, the more proportion of aragonite and vaterite structure of calcium carbonate. Correspondingly, the proportion of calcium carbonate in calcite structure was decreasing, and its surface morphology was relatively loose and easy to rinse.
收稿日期: 2017-08-29
出版日期: 2018-05-02
基金资助:甘肃省青年科技基金
通讯作者:
姚夏妍
E-mail: 1141557523@qq.com
引用本文:
张恩玉，姚夏妍，鲁兴武，程亮，崔海瑞. 磁处理对循环冷却水硬度的影响[J]. 中国冶金, 2018, 28(4): 35-39.
ZHANG En- yu,YAO Xia- yan,LU Xing- wu,CHENG Liang,CUI Hai- rui. Effect of magnetic treatment on hardness of circulating cooling water[J]. China Metallurgy, 2018, 28(4): 35-39.
2018, Vol. 28 
