A shearing-enhanced goethite process for iron removal is proposed to overcome the difficulties in process reaction control and non-uniform mass transfer. The reaction kinetics of the oxidation of Fe²⁺ to α-FeOOH and crystal growth of α-FeOOH were studied in a ZnSO₄-FeSO₄ system. Oxidation and crystal growth experiments were performed under the following conditions: shearing speed = 1000–4000 rpm, flow rate of oxygen = 0.3–1.5 L min⁻¹, and reaction temperature = 70–90 °C. The results show that the oxidation rate increases with increasing shearing speed and reaction temperature, owing to the increase in oxygen mass transfer. The degree of crystallization of goethite improves and the needle-like structure is further refined as the shearing speed increases and the temperature decreases. The activation energy of nucleation is about 54 kJ mol⁻¹. The rate equations are derived for the oxidation and oxygen mass transfer processes. The oxidation kinetics parameters are calculated by data fitting. The rate equations of oxygen mass transfer and Fe²⁺ oxidation are $m_{O_2}=54.01k_{\mathit{LO}}\bullet \left(\frac{P_{O_2}}{H_{O_2}}-C_{O_2}\right)\bullet M_{O_2}\bullet v_g\bullet n^{0.4}$ and $r=\frac{47.08C_{{\mathit{Fe}}^{2+}}^2\bullet C_{O_2}}{C_{{\mathit{Fe}}^{2+}}+0.001865}$, respectively.

为了克服工艺反应控制和传质不均匀的困难，提出了一种剪切增强的针铁矿脱铁工艺。在ZnSO ₄ -FeSO ₄体系中研究了Fe ²⁺氧化为α-FeO​​OH的反应动力学和α-FeO​​OH的晶体生长。在以下条件下进行氧化和晶体生长实验：剪切速度= 1000–4000 rpm，氧气流速= 0.3–1.5 L min ^-1，反应温度= 70–90°C。结果表明，由于氧气传质的增加，氧化速率随剪切速度和反应温度的增加而增加。随着剪切速度的增加和温度的降低，针铁矿的结晶度提高，针状结构进一步细化。成核的活化能为约54kJ mol ^-1。得出了氧化和氧气传质过程的速率方程。氧化动力学参数通过数据拟合计算。氧气传质和Fe ²⁺氧化的速率方程为${米}_{{Ø}_{\mathrm{2个}}}=54.01{ķ}_{\mathit{LO}}\bullet \left(\frac{P_{{Ø}_{\mathrm{2个}}}}{H_{{Ø}_{\mathrm{2个}}}}-C_{{Ø}_{\mathrm{2个}}}\right)\bullet {\mathrm{中号}}_{{Ø}_{\mathrm{2个}}}\bullet v_G\bullet {ñ}^{0.4}$ 和 $\mathrm{[R}=\frac{47.08C_{{\mathit{铁}}^{\mathrm{2个}+}}^{\mathrm{2个}}\bullet C_{{Ø}_{\mathrm{2个}}}}{C_{{\mathit{铁}}^{\mathrm{2个}+}}+0.001865}$， 分别。