CHEMICAL PROPERTIES OF AMINO-CARBOXYLMETHYL CELLULOSE AND ITS DEPRESSING MECHANISMS ON STIBNITE
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition1994年第1期
论文作者：徐晓军 胡熙庚 刘金华
文章页码：104 - 110
摘 要：<正>This paper presents a study on the chemical properties ofamino-carboxylmethyl cellulose（ACMC）and the mechanisms of the reac-tion of ACMC with copper ions and the depression of ACMC on CuSO4-ac-tivated stibnite.The results of XPS and IR analyses show that after CMCis treated by aqueous ammonia,amino-carboxyl groups form in CMCmolecules by H-bonding action which can complex selectively with copperions to form copper-amino-carboxymethyl cellulose.On the surface ofCuSO4-activated stibnite,ACMC is also able to complex strongly with cop-per ions and forms a strong hydrophilic depression film.Because there arethe obvious difference of reactions between ACMC with Cu2+ and ACMCwith Hg2+,the separation of cinnabar from stibnite is successfully realizedusing ACMC as depressant and CuSO4 as activator.
徐晓军，胡熙庚，刘金华
摘 要：<正>This paper presents a study on the chemical properties ofamino-carboxylmethyl cellulose（ACMC）and the mechanisms of the reac-tion of ACMC with copper ions and the depression of ACMC on CuSO4-ac-tivated stibnite.The results of XPS and IR analyses show that after CMCis treated by aqueous ammonia,amino-carboxyl groups form in CMCmolecules by H-bonding action which can complex selectively with copperions to form copper-amino-carboxymethyl cellulose.On the surface ofCuSO4-activated stibnite,ACMC is also able to complex strongly with cop-per ions and forms a strong hydrophilic depression film.Because there arethe obvious difference of reactions between ACMC with Cu2+ and ACMCwith Hg2+,the separation of cinnabar from stibnite is successfully realizedusing ACMC as depressant and CuSO4 as activator.
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