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    • 7. 发明授权
    • Pyrite depressant useful in flotation separation
    • 用于浮选分离的黄铁矿抑制剂
    • US5853571A
    • 1998-12-29
    • US877321
    • 1997-06-17
    • Guy H. HarrisDouglas W. Fuerstenau
    • Guy H. HarrisDouglas W. Fuerstenau
    • B03D1/012B03D1/014B03D1/01B03D1/06
    • B03D1/012B03D1/014B03D2201/06B03D2203/02
    • The present invention relates to a process for separating pyrite from sulfide ores and coal during flotation separation which comprises the depressing of pyrite with from about 0.05 to 0.75 kilograms per ton of concentrate solids using a pyrite depressant compounds selected from the group consisting of R1, R2, R3 N.sup.+ O.sub.2 H.sub.4 SR4X.sup.- (I) where R1, R2 and R3 are lower alkyls wherein the final sum of the carbon atoms is in a range of 3 to 6, R4 is selected from a group consisting of hydrogen (H) and amidine and X is chlorine, bromine or iodine, ##STR1## where Ro is a lower alkyl having carbon atoms in a range of 3 to 8 with 3 to 6 being preferred and a final pH in a range of 4 to 9 depending on the ore being processed, and therafter recovering the flotation concentrate thus obtained. As to group (I) compounds, 2-trimethylammonium-ethane isothiuronium dichloride (TMAE) as a pyrite depressant is surprisingly effective in pyrite removal being substantially independent of the pH values of the treated ore or coal, compatible with conventional collector reagents such as xanthates in the case of copper sulfide bearing ores as well as being substantially unobtrusive in not depressing other useful ore sulfides, including but limited to chalcopyrite, bornite chalcosite. Group (II) are more pH sensitive.
    • 本发明涉及一种在浮选分离过程中从硫化矿石和煤中分离黄铁矿的方法,其中包括使用选自由R1,R2组成的组的黄铁矿抑制剂化合物,每吨浓缩固体用约0.05至0.75千克的黄铁矿压制 ,R3N + O2H4SR4X-(I)其中R1,R2和R3是低级烷基,其中碳原子的最终总和在3至6的范围内,R4选自氢(H)和脒,以及 X是氯,溴或碘,其中Ro是碳原子在3至8范围内的低级烷基,其中3至6是优选的,最终pH在4至9的范围内,这取决于 矿石被处理,并且回收由此获得的浮选精矿。 对于(I)族化合物,作为黄铁矿抑制剂的2-三甲基铵 - 乙烷异硫脲二氯化物(TMAE)在黄铁矿去除方面令人惊奇地有效,其实质上与经处理的矿石或煤的pH值无关,与常规的收集剂如黄原酸酯相容 在含有硫化铜的矿石的情况下,以及在不抑制其它有用的硫化物(包括但限于黄铜矿,黑曲霉硫化物)基本不引人注目的情况。 组(II)对pH敏感。
    • 9. 发明授权
    • Process for the recovery of non-ferrous metal sulfides
    • 回收有色金属硫化物的方法
    • US4793852A
    • 1988-12-27
    • US791803
    • 1985-10-28
    • Guy H. HarrisPatrice K. AckermanFrank F. Aplan
    • Guy H. HarrisPatrice K. AckermanFrank F. Aplan
    • B03D1/012C01G1/12C22B1/00
    • C01G1/12B03D1/012B03D2201/02B03D2203/02
    • This invention relates to a method of recovering non-ferrous metal sulfides from a metal ore which comprises subjecting the metal ore, in the form of an aqueous pulp, to a froth flotation process in the presence of a flotating amount of a flotation collector wherein the collector comprises a compound which corresponds to one of the formulas ##STR1## wherein R.sup.1 is alkyl, aryl or aralkyl group wherein the aryl and aralkyl can be substituted with a halo or alkyl moiety;R.sup.2 is alkyl, aryl or aralkyl group wherein the aryl or aralkyl can be substituted with a halo or alkyl moiety;R.sup.3 is aryl or aralkyl unsubstituted or substituted with a halo or alkyl moiety;R.sup.4 is alkyl, aryl or aralkyl group wherein the aryl or aralkyl can be substituted with a halo or alkyl moiety; with the proviso that at least one of R.sup.1 and R.sup.2 must be aryl or aralkyl unsubstituted or substituted;under conditions such that the metal sulfide values are recovered in the froth.The collectors of this process are useful under alkaline, neutral and acidic conditions. Such collectors give good recoveries of the mineral sulfide values, with a high selectivity toward the non-ferrous metal sulfide values over the ferrous containing minerals.The novel collectors of this invention result in surprisingly high recovery of nonferrous metal values or sulfidized metal oxide values, and a surprisingly high selectivity toward such nonferrous metal values when such metal values are found in the presence of ferrous-containing metal sulfides. These collectors demonstrate good recovery and good kinetics.
    • 本发明涉及一种从金属矿石中回收有色金属硫化物的方法,该方法包括在浮选量为浮选收集器存在的情况下,以含水纸浆形式的金属矿石进行泡沫浮选工艺,其中, 收集器包括对应于下式之一的化合物,其中R 1是烷基,芳基或芳烷基,其中芳基和芳烷基可以被卤素或烷基部分取代; R2是烷基,芳基或芳烷基,其中芳基或芳烷基可以被卤素或烷基部分取代; R3是未被取代或被卤素或烷基部分取代的芳基或芳烷基; R 4是烷基,芳基或芳烷基,其中芳基或芳烷基可以被卤素或烷基部分取代; 条件是R 1和R 2中的至少一个必须是未取代或取代的芳基或芳烷基; 在使得金属硫化物值在泡沫中回收的条件下。 该方法的收集器在碱性,中性和酸性条件下是有用的。 这种收集器对矿物硫化物值的回收率良好,对含铁矿物的有色金属硫化物值具有很高的选择性。 本发明的新型收集器导致有色金属值或硫化金属氧化物值的令人惊讶的高回收率,以及当在含亚铁金属硫化物存在下发现这种金属值时,对这种有色金属值的惊人的高选择性。 这些收集者表现出良好的恢复和良好的动力学。