The cation effect on adsorption of surfactant in the froth flotation …
This report investigates the effect of common water hardness cations (Ca 2+ and Mg 2+) on the recovery of diaspore and kaolinite using micro-flotation at various ... The results linked the cation effects on diasporic bauxite flotation with changes of surface adsorption by tuning the hydrogen bonding and dipole-dipole interaction between ore …
A study of bauxite tailing quality improvement …
This paper reports a study that implements reverse flotation method to separate silica from West Kalimantan bauxite ores. The study aimed to find the good process condition to obtain low silica ...
Reverse flotation for removal of silicates from diasporic-bauxite
The reverse-flotation process cannot achieve effective separation of Al 2 O 3 and SiO 2 from high-ferrous bauxite [13] because high-ferrous bauxite is characterized by a high content of Al 2 O 3 ...
Implementation of reverse flotation method to reduce …
This paper reports a study that implements reverse flotation method to separate silica from West Kalimantan bauxite ores. The study is aimed to find the good process condition to obtain low-silica bauxite as the feed for the Bayer process. The experiments were carried out in a 1 L of flotation cell tank.
Reverse flotation for removal of silicates from diasporic-bauxite
Aluminum-silicates such as pyrophyllite, illite, kaolinite and chlorite are impurity minerals in diasporic-bauxite, it being necessary to remove these silicate minerals to improve the mass ratio of Al 2 O 3 /SiO 2 of diasporic-bauxite for the Bayer process. A new quaternary ammonium salt (DTAL) has been shown to be efficient in the flotation of ...
The Influence of Backwater Al3+ on Diaspore Bauxite Flotation
This study can be used to guide the application of backwater in the flotation of diaspore bauxite in industry. C 1s NEXAFS approximate energy ranges and primary absorption peaks [45].
Reactive Silica Reduction on Bauxite by Flotation
The purpose of this work was to evaluate the reverse flotation in Amazonian Bauxite beneficiation to improve its chemical quality (decreases reactive silica grade and …
Fine Bauxite Recovery Using a Plate-Packed Flotation …
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 Al2O3 increased by 2.11%, and the grade of Al2O3 increased by 1.85%. The fraction of 20 m mineral particles in concentrate ...
Enhanced Bauxite Recovery Using a Flotation Column …
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 …
The Impact of Backwater Iron Ions on Bauxite Flotation
There are 4.71 billion tons of bauxite ores reserves in China until 2015 [], and the majority is diaspore bauxite, which has a low ratio of alumina to silica (A/S).Diaspore bauxite was unsuitable for direct extraction of alumina with Bayer process and the Bayer-mineral processing method was developed to be a new approach to make better use of …
Treatment technique for wastewater from bauxite flotation …
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 ...
Enhanced Bauxite Recovery Using a Flotation …
Abstract. An innovative self-designed medium was packed in a bench-scale flotation column to study its influence on the flotation recovery of bauxite. …
Treatment technique for wastewater from bauxite flotation …
Bauxite flotation, an important part of the Bayer process with dressing, can improve the utilization rate of medium- and low-grade bauxite resources and contribute greatly to the sustainable development of the alumina industry. A large amount of water is needed for bauxite flotation, and most of this water can be recycled by adding a …
NI 43-101 TECHNICAL REPORT
and Barrie, 2019). The latter report documented the Phases II and III drilling programs. Two more phases of drilling have been completed since the 2019 NI 43-101 report. The five phases of core drilling between 2016 and 2021 provide the basis for an updated lithium resource for Noram's Zeus property.
Fine Bauxite Recovery Using a Plate-Packed Flotation …
Flotation experiments showed that packing-plates in the collection zone of a column can improve bauxite flotation performance and increase the smaller bauxite particles …
Flotation of low-grade bauxite using organosilicon cationic …
Further studies of bauxite ore flotation were also conducted, and the reverse flotation separation process was adopted. The concentrates with the mass ratio of Al2O3 to SiO2 of 9.58 and Al2O3 recovery of 83.34% are obtained from natural bauxite ore with the mass ratio of Al2O3 to SiO2 of 6.1 at pH value of 11 using the organosilicon cationic ...
Treatment technique for wastewater from bauxite flotation and …
Bauxite flotation wastewater is generally weakly alkaline (the pH is approximately 9.0) and mainly contains suspended solids, soluble solids, ions, reagent residues and other pollutants (Huo et al., 2019). When bauxite flotation wastewater is discharged into the environment, its alkalinity causes an imbalance in the alkalinity of …
Solution chemistry of flotation separation of diasporic bauxite
The fundamentals involved the technologies were studied. The relationship of collectors, dispersant and pH can be determined by solution chemical calculation in the direct flotation of bauxite by anionic collectors. The PZC of minerals and the p K a of collectors are the dominating control parameter in the reverse flotation by cationic collectors.
Fine Bauxite Recovery Using a Plate-Packed Flotation Column
Zhang et al. [13] utilized a plate-packed flotation column (PFC) for fine bauxite, and the Al 2 O 3 recovery and grade increased by 2.11% and 1.85%, respectively, compared to the result obtained ...
Flotation Decarbonization and Desulfurization of a …
(This article belongs to the Special Issue Flotation Chemistry of Oxidized Ore) Download keyboard_arrow_down. Browse Figures. Versions Notes. Abstract. A …
Flotation of low-grade bauxite using organosilicon cationic …
Bauxite desilication by flotation, which can process low grade bauxite into high quality bauxite (Gibson et al. 2017;Feng et al. 2009), has become an important technical guarantee for the ...
Mechanism of reverse flotation desilication for bauxite by …
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 ...
Treatment of backwater in bauxite flotation plant and optimization by
The bauxite flotation plants in China, most of which were built and put into production after 2009, retained good flotation indexes by discharging the backwater out of the recycling system and replacing it with fresh water. There are no reports on research and industrial applications of backwater treatment of bauxite flotation.
(PDF) Implementation of Reverse Flotation Method to
The optimum pH range of bauxite flotation using DDA and AERO 3000C as collectors can be achieved at pH 4 – 10. From the results, flotation performance using DDA is better than AERO 3000C because ...
(PDF) Kaolinite removal from bauxite by flotation:
By reverse flotation of the ore, a high-grade bauxite concentrate with A/S ratio 8.54 was obtained, however the Al2O3 recovery remained low at 42.87%. ... This paper reports an innovative ...
Characterization and flotation of low-grade boehmitic bauxite …
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.
Separation of silica from bauxite via froth flotation
Abstract. This paper reports an innovative development: concentrating gibbsite via reverse froth flotation in order to obtain a metallurgical-grade bauxite …
Significance of particle aggregation in the reverse flotation …
An important result of recent bauxite flotation research was the opening in 2002 of the first bauxite mineral processing plant in China (and in the world) which uses direct flotation to prepare a bauxite concentrate for the Bayer process (Zhao et al., 2010). One million tons/yr of bauxite ore can be treated at this plant.
The role of cationic polyacrylamide in the reverse flotation …
The reverse flotation separation of kaolinite and diaspore was achieved at pH 5.5–8.5 by using dodecylamine as a collector and cationic polyacrylamide as a depressant. At pH 5.5–8.5, DDA was mainly in the form of ( C 12 H 25 NH 3 +) 2 and C 12 H 25 NH 3 + cationic ions in aqueous solution, and the main species were of Al OH and Al …
Research Progress on Flotation Desilication for Bauxite
2. National & Regional Engineering Research Center for Gang Resources from Metal Mines, Kunming 650093, China. Abstract. With the depletion of high quality bauxite raw …