ORE DRESSING METHOD

• Main Authors: AHMED MOHAMED ELMAHDY AHMED MOHAMED, HIRASHIMA TAKESHI, MOHSEN MOHAMMAD MOHAMMADI FARAHAT, SAWADA MITSURU
• Format: Patent
• Language: English; Japanese
• Published: 08.09.2016
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

PROBLEM TO BE SOLVED: To provide a more efficient ore dressing method.SOLUTION: An ore dressing method includes: a magnetization step of irradiating micro waves to a raw material containing a plurality of kinds of pulverized minerals and magnetizing part of the minerals; and a magnetic separation step of separating the raw material into magnetically attracted substances and non-magnetically attracted substances after the magnetization step. The ore dressing can be efficiently performed by appropriately setting conditions of the magnetization step and the magnetic separation step. In the case in which the raw material contains yellow pyrite and molybdenite, an electric power of micro waves is 300 W or higher, and a processing time is 60 seconds or more in the magnetization step. A magnetically attracted substance collecting ratio of yellow pyrite can be 90% or higher, and a magnetically attracted substance collecting ratio of molybdenite can be almost 0 so as to sufficiently separate yellow pyrite from molybdenite.SELECTED DRAWING: Figure 1 【課題】より効率のよい選鉱方法を提供する。【解決手段】粉砕された複数種類の鉱物を含む原料にマイクロ波を照射して一部の鉱物を磁化する磁化工程と、磁化工程の後に、原料を磁着物と非磁着物に分離する磁力選鉱工程とを備える。磁化工程および磁力選鉱工程の条件を適切に設定することで、効率よく選鉱できる。原料に黄銅鉱および輝水鉛鉱が含まれている場合には、磁化工程において、マイクロ波の電力を300W以上、処理時間を60秒以上とする。黄銅鉱の磁着物回収率を90%以上とし、かつ輝水鉛鉱の磁着物回収率をほぼ0とでき、黄銅鉱と輝水鉛鉱を十分に分離できる。【選択図】図１