洁净煤技术
潔淨煤技術
길정매기술
Clean Coal Technology
2015年
5期
8-13,18
,共7页
于海选%杨世诚%张玉德%马名杰
于海選%楊世誠%張玉德%馬名傑
우해선%양세성%장옥덕%마명걸
煤泥%复合药剂%传统药剂%精煤产率%浮选完善指标
煤泥%複閤藥劑%傳統藥劑%精煤產率%浮選完善指標
매니%복합약제%전통약제%정매산솔%부선완선지표
coal slime%compound reagent%traditional agent%clean coal yield%flotation perfect index
为改善煤泥浮选效果,以煤油和芳烃类试剂AR为原料制备复合药剂,通过正交试验确定传统药剂与复合药剂的最佳浮选试验条件,分析了捕收剂的煤泥浮选作用机理. 结果表明,复合药剂的最佳浮选条件为煤浆质量浓度100 g/L,捕收剂用量1000 g/t,起泡剂用量100 g/t,此时精煤产率59. 87%,精煤灰分12. 10%,浮选完善指标为67. 51%. 传统药剂的最佳浮选条件为煤浆质量浓度60 g/L,捕收剂用量1200 g/t,起泡剂用量120 g/t,此时精煤产率57. 97%,精煤灰分11. 91%,浮选完善指标65. 83%. 复合药剂的精煤产率提高1. 90%,浮选完善指标增加1. 68%,各项指标明显优于传统药剂. X射线衍射分析和红外光谱分析表明,复合药剂对石英和煤粒的分离效果优于传统药剂. 复合药剂吸附在煤粒表面,改变了煤泥表面润湿性,从而增强煤粒可浮性,使煤粒与无机矿物分离,处理后精煤中的无机矿物石英、白云母和高岭石等含量减少.
為改善煤泥浮選效果,以煤油和芳烴類試劑AR為原料製備複閤藥劑,通過正交試驗確定傳統藥劑與複閤藥劑的最佳浮選試驗條件,分析瞭捕收劑的煤泥浮選作用機理. 結果錶明,複閤藥劑的最佳浮選條件為煤漿質量濃度100 g/L,捕收劑用量1000 g/t,起泡劑用量100 g/t,此時精煤產率59. 87%,精煤灰分12. 10%,浮選完善指標為67. 51%. 傳統藥劑的最佳浮選條件為煤漿質量濃度60 g/L,捕收劑用量1200 g/t,起泡劑用量120 g/t,此時精煤產率57. 97%,精煤灰分11. 91%,浮選完善指標65. 83%. 複閤藥劑的精煤產率提高1. 90%,浮選完善指標增加1. 68%,各項指標明顯優于傳統藥劑. X射線衍射分析和紅外光譜分析錶明,複閤藥劑對石英和煤粒的分離效果優于傳統藥劑. 複閤藥劑吸附在煤粒錶麵,改變瞭煤泥錶麵潤濕性,從而增彊煤粒可浮性,使煤粒與無機礦物分離,處理後精煤中的無機礦物石英、白雲母和高嶺石等含量減少.
위개선매니부선효과,이매유화방경류시제AR위원료제비복합약제,통과정교시험학정전통약제여복합약제적최가부선시험조건,분석료포수제적매니부선작용궤리. 결과표명,복합약제적최가부선조건위매장질량농도100 g/L,포수제용량1000 g/t,기포제용량100 g/t,차시정매산솔59. 87%,정매회분12. 10%,부선완선지표위67. 51%. 전통약제적최가부선조건위매장질량농도60 g/L,포수제용량1200 g/t,기포제용량120 g/t,차시정매산솔57. 97%,정매회분11. 91%,부선완선지표65. 83%. 복합약제적정매산솔제고1. 90%,부선완선지표증가1. 68%,각항지표명현우우전통약제. X사선연사분석화홍외광보분석표명,복합약제대석영화매립적분리효과우우전통약제. 복합약제흡부재매립표면,개변료매니표면윤습성,종이증강매립가부성,사매립여무궤광물분리,처리후정매중적무궤광물석영、백운모화고령석등함량감소.
To improve effects of slime flotation,the best flotation conditions of compound reagent which was the mixture of kerosene and ar-omatic AR reagent was investigated through orthogonal test. The flotation mechanism was introduced. The experimental results showed that, for compound reagent,when the flotation pulp concentration,dosage of collector and frother were 100 g/L,1000 g/t and 1000 g/t respec-tively,the clean coal yield,ash of clean coal,flotation perfect index could reach 59. 87%,12. 10% and 67. 51%. For traditional reagent, when the flotation pulp concentration,dosage of collector and frother were 60 g/L,1200 g/t,120 g/t,the clean coal yield,ash of clean coal,flotation perfect index could reach 57. 97%,11. 91%,65. 83%. Compound reagent was more superior to the traditional reagent in im-proving clean coal yield (1. 90%) and flotation perfect index (1. 68%). Through X ray diffraction analysis and infrared spectrum analy-sis,the separation effects of the compound reagent on quartz and coal particles was better than that of traditional reagent. The attachment of compound reagent on surface of coal particle changed its wettability and improved flotability. After flotation,the content of quartz,mica and kaolinite in clean coal decreased.
