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由原矿品位为Ｎｉ ０ ．６６ ％ ，Ｃｕ ０ ．３５ ％ ， ＭｇＯ２８ ．６０ ％ 的低品位镍矿石， 采用一种简单的浮选工艺流程以及有效的浮选剂， 包括乙黄药（ＥＸ） 与丁铵黑药（ＡＢＤ） 的组合捕收剂和脉石矿物抑制剂ＡＣＭＣ（ 一种改性的羧基甲基纤维素） ， 获得含Ｎｉ６ ．７０ ％ ，Ｃｕ ３ ．５９ ％ ， ＭｇＯ５ ．２４ ％ 的高品质精矿， 镍、铜回收率分别为７５ ．４ ％ ，７７ ．５ ％ 。浮选试验显示，ＥＸ 与ＡＢＤ 组合捕收剂优于丁黄药（ＢＸ） 与ＡＢＤ 的组合。其原因可能是ＥＸ 与ＡＢＤ 合理搭配使用能发生“共吸附”， 产生“协同效应”；ＢＸ 与ＡＢＤ 组合使用，发生了“竞争吸附”。ＡＣＭＣ 在蛇纹石表面的吸附， 大大增强了它的亲水性。在精选中添加ＡＣＭＣ４０ ｇ／ｔ， 能使精矿中ＭｇＯ 含量从８ ．７４ ％ 降到３ ．６９ ％ 。通过对ＡＣＭＣ 作用前后的蛇纹石和镍黄铁矿表面Ｚｅｔａ电位的测定， 得到一些关于ＡＣＭＣ 作用机理的证据
By the ore grade Ni 0. 66%, Cu 0. 35%, MgO28. 60% low-grade nickel ore using a simple flotation process and effective flotation agents, including the combination collector of Pyrethroid (AB) with AB and the gangue mineral inhibitor ACMC (a modified carboxymethyl cellulose), to obtain Ni6. 70%, Cu 3. 59%, MgO5. 24% of high-quality concentrate, nickel, copper recovery rates were 75. 4%, 77. 5%. Flotation tests showed that the EX and ABD combination collectors are superior to the combination of butyric (BX) and ABD. The reason may be the rational use of EX with ABD can occur “co-adsorption”, resulting in a “synergistic effect”; BX and ABD combination, the occurrence of “competitive adsorption.” ACMC adsorption on the serpentine surface, greatly enhanced its hydrophilicity. Add ACMC40 g / t in the selection to make the MgO content in the concentrate from 8. 74% dropped to 3. 69%. Through the determination of Zeta potential on serpentine and pentlandite before and after ACMC, some evidences about the mechanism of action of ACMC