目前很多野外勘探队，均感铁砂供不应求，为了迅速决解这一问题，急需有一套设备简单、制造容易的制造铁砂办法，来满足各地要求。现特将我厂几年来所采用的小型制造铁砂的工艺过程总结于下，供作参考。 At present, many field exploration teams feel that iron ore is in short supply. In order to quickly resolve this issue, there is an urgent need for a method of manufacturing iron sand with simple equipment and easy manufacturing to meet local requirements. The process of small-scale manufacturing of iron sand used by our factory over the past few years is summarized here for reference.