Dolomite Flotation Concentrate
- صفحه اصلی
- Dolomite Flotation Concentrate
In this study, carboxymethyl cellulose (CMC) was introduced as a depressant for flotation of dolomite and fluorapatite, the adsorption mechanism of CMC …
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Chain Length on the Flotation Behavior of Magnesite and Dolomite ... The flotation concentrate with treatment of different depressants were respectively placed into the YP-15 tablet press (Tianjin
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The flotation separation of magnesite from calcium-containing minerals has always been a difficult subject in minerals processing. This work studied the inhibition effects of carboxymethyl cellulose (CMC), sodium lignosulphonate, polyaspartic acid (PASP) and sodium silicate on flotation behaviors of magnesite, dolomite and calcite, …
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Micro-flotation results indicated that the addition of P (AA-AMPS) could achieve the efficient separation of apatite from dolomite at pH 8.5 by selectively depressing the dolomite flotation, in ...
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These values were adopted whilst considering a carbonate concentrate having a calcite or dolomite recovery above 60 % and an apatite recovery of less than 5 %. Considering the latter quality controlling limits, synthetic fatty acids and especially CC1 exceled in dolomite flotation and scored very satisfactory results (SE of 95.86 % and SI ...
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SDS effectively removed dolomite from the gravity concentrate when no other reagents were present. Flotation test results showed that, compared to the conventional gravity-flotation process, the ...
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2.9.2. DFT simulation. DFT is extensively employed to analyze the chemical reaction mechanisms between flotation reagents and mineral surfaces, thereby enhancing the efficiency and selectivity of the flotation process [30], [31].The optimization of geometry and calculation of energy for the dolomite crystal and its adsorption system were …
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Its collecting ability to chalcopyrite and selectivity against sphalerite were compared with isobutyl xanthate (SIBX) by single mineral flotation tests and artificial …
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Pyrite concentrate is a common by-product obtained after Pb and Zn sulfide minerals flotation. Pyrolysis at 600 ∼ 700 °C in an inert atmosphere is an effective way to comprehensively utilize pyrite concentrate. However, the content of Pb and Zn in pyrolysis slag is relatively high, which is not conducive to subsequent utilization.
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Successful methods include adding a dolomite depressant in the rougher flotation, dolomite flotation on the cleaner concentrate with grinding, and scrubbing the cleaner …
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The industrial-scale flotation tests show that Pb recovery in Pb concentrate increased by 1.86% compared with that of original system during industrial-scale tests period, and the Pb recovery increased by 4.09% compared with that of original system before industrial-scale tests period, while the Zn operating recovery in zinc oxide …
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Flotation test of a single mineral under an ether amine system. Under the ether amine system, the flotation behaviour of magnesite, dolomite, and quartz single minerals was studied.
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This paper presents a comprehensive study on the selective flotation of a multi calcium-bearing minerals ore, focusing on the efficient removal of dolomite and calcite impurities from a carbonaceous sedimentary phosphate ore. Commercial fatty acid (FA) and phosphate ester collectors were investigated in a reverse flotation process, assessing …
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The major problem with Carlin-type gold deposit flotation is that the high dolomite content in the concentrate decreases the quality of gold. Further, the activation mechanisms involved in dolomite flotation are still not fully understood. Herein, the correlation of Fe2+ conversion with xanthate adsorption and dolomite flotation was …
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Successful methods include adding a dolomite depressant in the rougher flotation, dolomite flotation on the cleaner concentrate with grinding, and scrubbing the cleaner concentrate in quartz sand. These techniques could reduce MgO content in the final concentrate by 20-40%.
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Overall, dolomite was selectively depressed by SA during the flotation of sphalerite, and the content of magnesium in the zinc concentrate decreased significantly from 3.65% to 2.37%.
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In this study, the effect of sodium pyrophosphate (NaPP) on the separation of apatite from dolomite by flotation was systematically investigated. Flotation results revealed that NaPP could selectively depress the flotation of apatite, thus realizing the separation of apatite from dolomite. Further, the selective depression mechanism of …
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During magnesite ore flotation, particularly fine dolomite particles are easily transferred to the magnesite concentrate via non-selective bubble-to-particle attachment, slime coating, and ...
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The results above show that a good flotation separation effect of apatite dolomite can be achieved with sulfuric acid or phosphoric acid as the depressant (the concentrate P 2 O 5 grade > 30%), but the problem is that the recovery is relatively low.
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Micro-flotation results indicated that the addition of P (AA-AMPS) could achieve the efficient separation of apatite from dolomite at pH 8.5 by selectively …
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Trenching, Phase 1 drilling, sampling, analysis, and preliminary metallurgical testing have been completed. The testing included a traditional crush/grind/flotation …
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The micro-flotation results indicate that dolomite can be selectively depressed, with its flotation recovery reduced to approximately 10 % by adding KGM at pH=9.0. In experiments involving artificially blended mineral flotation, the P 2 O 5 grade and recovery of the phosphorus concentrate were 36.8 % and 81.6 %, respectively.
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As shown in Fig. 9 (b), the flotation recovery rates of magnesite and dolomite in the concentrate improve after ultrasonic treatment, indicating that ultrasonic treatment promotes the flotation of magnesite and dolomite in mixed-ore flotation experiments. Notably, ultrasonic treatment has a more notable effect on improving the …
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In bench scale flotation tests with an artificial siliceous iron ore sample containing dolomite (2.5%), it was found that starch (200 g/t) was required for the effective flotation of the ore at pH 8, which produced concentrate with 55% Fe, 25% SiO 2 and 17.5% Fe in the tailing with 50 g/t of collector.
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As shown in Fig. 4, compared with the single collector of NaOL, the flotation recovery of magnesite with the mixed collector NaOL-DP improves 10–40% at the specified pH range, except for the condition of pH 11 declining 5%.The maximum recovery of 85% for magnesite was obtained at pH 10, and the selectivity index of two minerals was 3.78. …
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The micro-flotation results indicate that dolomite can be selectively depressed, with its flotation recovery reduced to approximately 10 % by adding KGM at pH=9.0. In experiments involving artificially blended mineral flotation, the P 2 O 5 grade and recovery of the phosphorus concentrate were 36.8 % and 81.6 %, respectively.
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Simultaneous ultrasonic treatment and flotation improved the flotation separation efficiency of magnesite and dolomite, with the flotation recovery of magnesite concentrate reaching 91.06%. Moreover, ultrasonic treatment increased the adsorption sites on the mineral surface, facilitating easier binding of the reagent to the mineral.
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Analysis of selective modification of sodium dihydrogen phosphate on surfaces of magnesite and dolomite: Reverse flotation separation, adsorption mechanism, and density functional theory calculations. Author links open overlay panel Jin Yao, ... the recovery of the dolomite in the acquired concentrate product was decreased from …
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When separating pyrite and dolomite by flotation in weakly acidic or neutral medium with WHL as depressor, the hydrophilicity of both the minerals is enhanced through WHL adsorption, however, the hydrophilicity A.P. Liu et al., Mechanism of separating pyrite and dolomite by flotation 295 of pyrite is partially counteracted by the generation of ...
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In this paper, Na 2 ATP was first applied as a depressant in the flotation separation of magnesite and dolomite with sodium oleate. The significant influence of Na 2 ATP on the flotation behavior of magnesite and dolomite was investigated via flotation tests. The selective adsorption behavior of Na 2 ATP on different mineral surfaces was …
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Furthermore, short cylinders selectively produce more active {104} crystal surface of dolomite, which possess a higher adsorption capacity with collectors and are …
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This paper presents a comprehensive study on the selective flotation of a multi calcium-bearing minerals ore, focusing on the efficient removal of dolomite and …
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Overall, dolomite was selectively depressed by SA during the flotation of sphalerite, and the content of magnesium in the zinc concentrate decreased significantly from 3.65% to 2.37%.
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For mixed ore flotation, based on the resource characteristics of magnesite ore, we mix magnesite and dolomite at a ratio of 9/1, and magnesite/dolomite recovery was the mass of the magnesite/dolomite in the concentrate divided by the total mass of the magnesite/dolomite.
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The dolomite content in the concentrate is about 20%, where 80% of dolomite was removed and importantly 98% of the quartz was removed, with only 0.3% of the quartz in the final concentrate.
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