Abstract: The desulfurization of high-sulfur diasporic bauxite from China with flotation process and butyl xanthate as collector was studied, and the effects of flotation time, pulp density, pH value and particle size of ores on the desulfurization rate were examined. The results indicated that the sulfur in bauxite was successfully decreased through flotation.Flotation tests Shortly after grinding, bauxite direct flotation tests were conducted (flotation cell: CFB - 1000N, Engendrar). The grinding product was added to the flotation cell and water was added until achieving approximately 60% of solids for conditioning with flotation reagents.

Flocculation and sedimentation of fine bauxite from flotation tailing pulp were studied using different flocculants to investigate the possibility of its application. The results of this investigation indicate that inorganic flocculants of PAC and PAS have better flocculating effect than organic flocculants of PAM1# and PAM2# when keeping the original pH (7.5~8.0) of tailing pulp, however its ...The flotation results proved experimentally that 2-BTHA could significantly improve the flotation grade and recovery of pyrite under weak acid conditions, have a good selectivity for a gangue mineral (diaspore), and achieve an excellent desulfurization effect in high-sulfur bauxite.

46 circulating water was the primary method for solving this problem in bauxite flotation 47 plants, resulting in a problem of recycling effluents. These recycling effluents 48 contained high concentrations of ions and the residues of beneficiation reagents, such 49 as collectors and flocculants(6, 7).An innovative self-designed medium was packed in a bench-scale flotation column to study its influence on the flotation recovery of bauxite. Computational fluid dynamics (CFD) simulation was conducted to reveal the impact of the packing medium on the turbulent characteristics of collection zone in the column. Simulation results show that multilayer packing of the medium divides the collection ...

The flotation properties of single minerals such as diaspore, kaolinite and pyrophllite in bauxites were investigated using RL as collector. The effects of regulators and unavoidable ions on flotation were studied. Based on the results of single minerals flotation, the separation experiments of mixed minerals and bauxite ore were carried out. The results of closed circuit test on the ore show ...Diasporic bauxite represents one of the major aluminum resources. Its upgrading for further processing involves a separation of diaspore (the valuable mineral) from aluminosilicates (the gangue minerals) such as kaolinite, illite, and pyrophyllite. Flotation is one of the most effective ways to real …

MINERAÇÃO . Concentration of bauxite fines via froth flotation . Concentração de finos de bauxita por flotação . Renata Salles Kurusu I; Arthur Pinto Chaves II; Christian Fonseca de Andrade III; Claret Antônio Vidal Abreu IV. I Master's Student in Mining Engineering, Department of Mining and Oil Engineering, Escola Politécnica, University of São Paulo, São Paulo, SP, Brasil.Wang, Y. Hu, P.He, G. Gu,Reverse flotation for removal of silicates from diasporic-bauxite,Minerals Engineering,17 (2004) 63–68 9. Wang Yuhua, RenJianwei,The flotation of quartz from iron minerals with a combinedquaternary ammonium salt,Int. J. Miner.

Removing kaolinite from bauxite using flotation method will depend on the liberation of bauxite grains from silica grains. It becomes a problem when the …The tailings of the beneficiation plant described in chapter 4.3 (Itamarita de Minas) still contain bauxite, which can be separated by reverse froth flotation (flotation of the quartz and depression of the bauxite), using starch as a depressant and amine as a promoter at a pH of approx. 10.

N, N-diethyl dodecyl amine(DEN12) was synthesized from dodecyl amine, formic acid and acetic aldehyde. The collecting property of DEN12 on diaspore, kaolinite and illite was investigated by flotation test and infrared spectrum. The results show that in the presence of 2.0×10−4 mol/L DEN12, the recoveries of kaolinite and illite are all higher than 78% and the recovery of diaspore is 50% in ...Therefore, this study is aimed to utilize reverse flotation method to recover alumina content from washed bauxite tailing. The reverse flotation experiments were carried out at pH of 6 and 8; while the particle sizes were varied at - 140+270 mesh and -270 mesh, using a batch and circuit configuration.

Desiliconization experiments were carried out during the process of one roughing-one cleaning direct flotation in this work using diasporic high-silica bauxite as experimental ore samples, sodium oleate as collector and humic acid as depressant.Current plant recoveries in the processing of the higher grade bauxite ore have been on the average of 25% when treated by grinding and desliming but these high grade reserves are being depleted. The utilization of marginal quality bauxite ores has been considered and flotation technology for treating BNCs and BNs were studied.

Closed-circuit flotation tests showed that reverse flotation de-silicating can be achieved by a new reagent scheme (DTAL, SFL and MIBC) to obtain a bauxite concentrate (A/S > 10, Al2O3 recovery ...Metallurgical ContentAlumina Extraction ProblemAluminum Extraction FlowsheetAluminum FactsFrom Bauxite to AluminiumThe Bayer ProcessHall or Heroult Process Aluminum is the most abundant metal in the earth's crust and is a constituent of many minerals. However, the material which is highest in aluminum and most free from objectionable impurities is bauxite …

Beneficiation techniques available for the processing of bauxite are washing, froth flotation, bio processing, magnetic and heavy media separation, which have been reported in literature by many ...The open-circuit flotation results also show that a bauxite concentrate with m(Al2O3)/m(SiO2) over 9.3 and Al2O3 recovery over 76% can be obtained from diasporic-bauxite ore.

Flotation experiments showed that packing-plates in the collection zone of a column can improve bauxite flotation performance and increase the smaller bauxite particles recovery. Using packing-plates, the recovery of Al 2 O 3 increased by 2.11%, and the grade of Al 2 O 3 increased by 1.85%.Status and research progress of bauxite floatation desilication : 铝土矿浮选脱硅现状及研究进展 : 短句来源 Effect of Water Quality on the bauxite Floatation Parameter : 水质对铝土矿浮选指标的影响 : 短句来源 According to particularity of bauxite floatation technology,BF-L floatation machine is invented and manufactured by Beijing General Research Institute of ...