中国有色金属学报
中國有色金屬學報
중국유색금속학보
THE CHINESE JOURNAL OF NONFERROUS METALS
2014年
11期
2879-2884
,共6页
绿泥石%黄铁矿%戊黄药%浮选分离%羧甲基纤维素%竞争吸附
綠泥石%黃鐵礦%戊黃藥%浮選分離%羧甲基纖維素%競爭吸附
록니석%황철광%무황약%부선분리%최갑기섬유소%경쟁흡부
chlorite%pyrite%potassium amyl xanthale%flotation separation%carboxy methyl cellulose%competitive adsorption
通过浮选试验、吸附量试验和红外光谱测试,考察捕收剂戊黄药(PAX)和抑制剂羧甲基纤维素(CMC)的添加顺序对绿泥石与黄铁矿浮选分离的影响,并研究其作用机理。结果表明:先加抑制剂羧甲基纤维素时,羧甲基纤维素是绿泥石的有效抑制剂,但也会抑制黄铁矿的浮选,影响绿泥石与黄铁矿的浮选分离;先加入捕收剂戊黄药时,羧甲基纤维素对黄铁矿的抑制作用减弱,而绿泥石的浮选回收不受影响,黄铁矿与绿泥石的分离选择性提高。抑制剂羧甲基纤维素能同时吸附在黄铁矿与绿泥石表面,而捕收剂戊黄药只能吸附在黄铁矿表面。戊黄药与羧甲基纤维素在黄铁矿表面存在竞争吸附,先加捕收剂时,戊黄药的预先吸附降低了羧甲基纤维素在黄铁矿表面的吸附量,减弱了羧甲基纤维素对黄铁矿的抑制作用,提高了黄铁矿与绿泥石的分离选择性。
通過浮選試驗、吸附量試驗和紅外光譜測試,攷察捕收劑戊黃藥(PAX)和抑製劑羧甲基纖維素(CMC)的添加順序對綠泥石與黃鐵礦浮選分離的影響,併研究其作用機理。結果錶明:先加抑製劑羧甲基纖維素時,羧甲基纖維素是綠泥石的有效抑製劑,但也會抑製黃鐵礦的浮選,影響綠泥石與黃鐵礦的浮選分離;先加入捕收劑戊黃藥時,羧甲基纖維素對黃鐵礦的抑製作用減弱,而綠泥石的浮選迴收不受影響,黃鐵礦與綠泥石的分離選擇性提高。抑製劑羧甲基纖維素能同時吸附在黃鐵礦與綠泥石錶麵,而捕收劑戊黃藥隻能吸附在黃鐵礦錶麵。戊黃藥與羧甲基纖維素在黃鐵礦錶麵存在競爭吸附,先加捕收劑時,戊黃藥的預先吸附降低瞭羧甲基纖維素在黃鐵礦錶麵的吸附量,減弱瞭羧甲基纖維素對黃鐵礦的抑製作用,提高瞭黃鐵礦與綠泥石的分離選擇性。
통과부선시험、흡부량시험화홍외광보측시,고찰포수제무황약(PAX)화억제제최갑기섬유소(CMC)적첨가순서대록니석여황철광부선분리적영향,병연구기작용궤리。결과표명:선가억제제최갑기섬유소시,최갑기섬유소시록니석적유효억제제,단야회억제황철광적부선,영향록니석여황철광적부선분리;선가입포수제무황약시,최갑기섬유소대황철광적억제작용감약,이록니석적부선회수불수영향,황철광여록니석적분리선택성제고。억제제최갑기섬유소능동시흡부재황철광여록니석표면,이포수제무황약지능흡부재황철광표면。무황약여최갑기섬유소재황철광표면존재경쟁흡부,선가포수제시,무황약적예선흡부강저료최갑기섬유소재황철광표면적흡부량,감약료최갑기섬유소대황철광적억제작용,제고료황철광여록니석적분리선택성。
The effects of collector potassium amyl xanthale (PAX) and depressant carboxy methyl cellulose (CMC) addition order on the separation of chlorite from pyrite were investigated by flotation tests, adsorption tests and FTIR study. The results show that CMC is an effective depressant in the flotation of chlorite, while it also depresses the flotation of pyrite. With the addition of PAX first, the depression effect of CMC on the pyrite is weakened while the chlorite flotation recovery is not influenced. CMC is adsorbed on the surfaces of both pyrite and serpentine while PAX is only adsorbed on the pyrite surface. CMC and PAX compete in adsorbing on pyrite surface and the adsorption density of CMC decreases in the presence of a pre-adsorbed layer of PAX. However, there is no competitive adsorption on the chlorite surface between PAX and CMC, while PAX can not be adsorbed on the chlorite surface.