Pyrite removal from several clays by high gradient magnetic separation method.
スポンサーリンク
概要
- 論文の詳細を見る
Pyrite removal from several clays by high gradient magnetic separation (HGMS) method was investigated. Effects of magnetic susceptibility (MS) values of pyrite and clays, and operation conditions on the pyrite removal were studied. Following results are discussed.<BR>(1) MS values of pyrite in the Itaya clay A and Sendatsu clay C were 1.01×10<SUP>-6</SUP> emu/g and 0.64×10<SUP>-6</SUP> emu/g, respectively. In spite of their low SM values, pyrite particles could be separated from clays by HGMS method because of their large particle size.<BR>(2) Efficiency of pyrite removal from clays were mainly dependent on the MS values of origin clays, and the good results were naturally obtained for low value clays. Pyrite removal from Itaya clay D (MS =0.08×10<SUP>-6</SUP> emu/g), Itaya clay A (MS =0.63×10<SUP>-6</SUP>emu/g) and Sendatsu clay C (MS =1.91×10<SUP>-6</SUP>emu/g) was examined under the following condition ; matrix : FW, magnetic field strength : 14.5 kG and linear velocity : 38.4 m/hr. The XRD peak intensities of pyrite (200) in the N-mag clays were 0 cps, 10 cps and 45 cps for Itaya clay D, Itaya clay A and Sendatsu clay C, and their Fe<SUB>2</SUB>O<SUB>3</SUB> content were 0.34 wt.%, 0.54 wt.% and 1.92 wt.% respectively.<BR>(3) Good results for pyrite removal from Itaya clay A by HGMS method were obtained at the high magnetic field strength (9.7-14.5 kG) and rather low linear velocity (22.1-38.4 m/hr). The matrix FW was best suitable for the pyrite removal.<BR>(4) By treating of Itaya clay A at 14.5 kG and 22.1 m/hr with matrix FW, whiteness increased from 80.5 to 87.4 with decreasing Fe<SUB>2</SUB>O<SUB>3</SUB> content from 1.46 wt.% to 0.38 wt.%, and N-mag clay yield was 89.00.<BR>(5) Also titanium oxide was easily removed from clays under the HGMS conditions which pyrite removal from clays resulted in good success.
- 環境資源工学会の論文
環境資源工学会 | 論文
- 微生物によるバイオマス系廃棄物からの水素生成
- 電気泳動現象を利用したサブミクロンシリカ粒子の分級
- 密閉容器内の沈積物の質量測定および液-液界面の界面位置測定に関する研究
- 講演4 ジグ選別によるASRの分離精製への展開 (環境資源工学会 シンポジウム「リサイクル設計と分離精製技術」 第11回:自動車リサイクル促進のための廃自動車シュレッダーダスト(ASR)の分離精製技術)
- POPs関連物質の加熱挙動に関する研究