flotation chromite amine

  • US4311584A - Amine flotation of chromite from acidic …

    Chromium values are recovered from pulverized chromite ore by agitating and aerating an aqueous pulp of said pulverized chromite ore containing an amine collector at a pulp acidity less than 2.5; and recovering a chromite containing froth as a concentrate.

  • Amine Flotation of Chromite from Acidic Pulps.

    Chromite is beneficiated by froth flotation with an amine reagent. The ore is ground to 30-210 micrometer, pulped to 24-29 pct solids, acidified to ph 2.5 With h2so4, and floated with 0.5-1.0 Lb amine collector/ton of ore. Thus, chromite ore was ground to -100 mesh, deslimed to >30 micrometer, and ...


    THE FLOTATION OF SOUTH AFRICAN CHROMITE ORES IN ACIDIC MEDIA Erdoğan YIĞITa, Muhlis Nezihi SARIDEDEa, ... He found that all amines with HCl and NaOH gave satisfactory results in the range of pH 6.5 and to pH 11, respectively. The pH range was down to 5 for H 2 SO 4 and 3 for H 3 PO 4. After so much researches on chromite flotation …

  • Flotation of Chromite Ore

    Flotation of Chromite Gravity Concentrate The amine flotation method was applied to chromite gravity concentrates prepared from Benbow-2 ore by a combined Humphrey’s spiral and table separation technique. The purpose of re-treating the gravity concentrate was to prepare a low-silica feed material for refractory testing.

  • processing chromite ores - crusherasia.com

    amine for chromite ores processing by froth flotation - Gold .... US Patent # 4,311,584. Amine flotation of chromite from acidic … The present invention relates to a method of beneficiating chromite ores by froth flotation ...

  • Chromite Flotation - 911metallurgist.com

    Careful studies of the fundamentals of chromite flotation have been made recently in the United States and in Poland. Palmer (1972), Palmer, Fuerstenau and Aplan (1975) and Fuerstenau and Palmer (1976) have demonstrated the importance of the presence or absence of charged metal hydroxy species in such flotation.

  • 7r?17~&13 c9/7 R.650. Further flotation tests of …

    Further flotation tests of chromite, Barnes Hill. Investigations R.632 and R.644 have shown that good recoveries of high grade chrornite flotation concentrate can be obtained from the Barnes Hili deposit using amine fortified with fuel oil in pulps acidified to pH 2.5-3.0 with sulphuric acid. The samples submitted for these investigations consisted of chromite …

  • (PDF) Flotation of chromite and serpentine - …

    PDF | Chromite is an important strategic mineral usually associated with other gangue minerals, mainly silicates. A good knowledge of the flotation behaviour of chromite and the establishment of conditions for its selective …

  • The effect of surface potential on the flotation of chromite

    The flotation of chromite from “slime fraction” of the gravity circuit of Kemi concentrator, Finland was studied. The main gangue minerals are chlorite, tremolite and talc. Amines or fatty acid collectors are normally used for this sort of mineral composition. Theoretically, a sufficient selectivity should be expected in the region where ...

  • flotation silica - keslerconstruction.com

    ... flotation Normally silica is floated using an amine as the flotation reagent ... Sand >flotation separation of chromite from silica sand flotation separation of ...

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