Process for preparation of high-purity iron powder

The method for preparing high-purity iron powder includes the following steps: mineral separation, fine-grinding twice, magnetic separation, placing the obtained iron concentrate powder into the floating machine in which the collecting agent, inhibiting agent and regulating agent are added to make reverse floatation, adopting fluoric acid or hydrolytic fluoride to make chemical separation (the non-metal residual quantity of SiO2, etc. in the iron concentrate powder is controlled below 0.08%), and using solid carbon and hydrogen to make two-step deoxygenation and reduction to obtain the high-purity iron powder with purity of above 99.80%.