含铁细粉的获得方法
By separating iron compounds from waste from groundwater treatment plants and reducing them under a high-temperature carbon monoxide and carbon dioxide atmosphere, combined with multiple separation methods, the problem of difficulty in controlling the particle size and purity of iron-containing powder in existing technologies has been solved, and highly dispersed nano-dispersed iron-containing powder has been prepared.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FERRME GRP LLC
- Filing Date
- 2021-11-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient for efficiently utilizing technical waste from groundwater treatment plants to prepare highly dispersed and nano-dispersed iron-containing powders. Furthermore, existing methods cannot precisely control particle size distribution and chemical composition, resulting in high impurity content.
Iron-containing powder was separated from the sludge from the washing water of the groundwater treatment plant. The iron compounds were reduced at high temperature using a mixture of carbon monoxide and carbon dioxide gas, and purified by magnetic separation, flotation and gravity separation methods to control particle size distribution and chemical purity.
It has been achieved that highly dispersed and nano-dispersed iron-containing powders with an iron content of at least 40% after drying can be prepared from waste from groundwater treatment plants, with 90% of the particles having a particle size of no more than 100 micrometers, improving chemical purity and reducing impurities.
Smart Images
Figure CN116568637B_ABST