The flotation test and settlement test of artificial mixed ore showed that a lower dosage of citric acid could significantly improve the removal rate of chlorite. ... The effect of Al 3+ in backwater on the flotation of diaspore bauxite was investigated by micro-flotation tests and the underlying mechanisms were investigated by inductively ...
Bench-scale flotation test of one bauxite ore is conducted to show collecting ability of BDDA in real ore systems. Fig. 1 shows the flowsheet and Table 4 presents the flotation results. Bauxite concentrates with the Al 2 O 3 to SiO 2 mass ratio of 9.72 can be obtained by using corn starch depressant and the Gemini collector under pH at around 9 ...
Sodium carbonate is widely used as pulp dispersant in bauxite flotation in China. Its key roles are pH adjusting, pulp dispersing and eliminating of calcium ions. ... As suggested from the flotation test results, sodium tripolyphosphate have a good selective depression effect on calcite. The results of adsorption test, Zeta potential ...
Flotation tests were carried out using the backwater after treatment. 2.2.2 Flotation test Flotation tests [11] were performed in a flotation cell with a flotation volume of 1.5 L and were carried out under the industrial conditions of grinding fineness of 92.69% <0.074 mm, pulp density of 31%, pH value of 9.3, and temperature of 25 °C.
In this study, the synthesized HHO has been proven as a good option of collector for use in separating minerals in low-grade diasporic bauxite. Results of the separation flotation test showed that the A/S ratio was 14.42 and the recovery of alumina in a concentrate was 81.80% using HHO as a collector, when the pulp pH was adjusted …
To improve the floatability of these clay minerals, efforts were focused on testing other cationic collectors. In a weak acidic medium (pH 4–4.8), n-(2-aminoethyl)-dodecanamide (AEDA) exhibited an effective flotation of kaolinite at a collector concentration of 0.2 mmol/l, as shown in Fig. 2 (Zhao et al., 2003a).In this case, the …
During bauxite flotation, flotation indexes decrease with increasing water circulation time, resulting in the discharge of bauxite flotation wastewater as well as a waste of resources and great environmental safety risks. ... and the treated water was subjected to a flotation test and attained good indexes: the proportion of alumina …
By simulating real-world conditions in a controlled environment, this flotation process examines the behavior of molybdenite, the primary mineral source of molybdenum, under different reagent types and concentrations. Each test carefully evaluates how different variables, such as pH, particle size distribution, and aeration, …
With the depletion of high quality bauxite raw ore, the exploitation of bauxite with low aluminum-silicon ratio become a main research direction. The desilication techniques …
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, …
Key words: starch; diaspore; reverse flotation; depressant 1 Introduction Cationic reverse flotation desilication is a key process for the effective utilization of Chinese diasporic bauxite in terms of the improvement of aluminum/silicon ratio (A/S), by which the gangue minerals, such as kaolinite, illite and pyrophyllite, are purposely ...
It was considered that this experiment is important to evaluate the influence of pH on the bauxite flotation response. Table 4 - Mass Balance (%) of flotation tests products. ... Liu J. Experimental Testing of Flotation …
The test results show that positive flotation is not fit for poor bauxite, reverse flotation process can obtain a certain effect, and the sintering aluminum process can fully recycle the useful ...
ecure mill lid tightly and grind for 10 minutes.Wash the pulp thoroughly from the mill and the charge, et screen the pulp @ 75 microns and dry product.Dry screen the oversize …
However, oleic acid collectors are still widely used in bauxite flotation as the most commonly used collectors (Deng et al., 2015; Wang et al., 2017) due to their low cost, ... Figure 1 is the flow chart of the flotation test. For single mineral flotation, the flotation concentrates and tails were filtered, dried, and weighed, and the recovery ...
The flotation test results were presented in Fig. 3, showing that the reverse flotation separation of a mixture of diaspore and aluminosilicate was completed under the conditions pH 8–12 and dosage of DDGS 0.2 mM. Fig. 3 also showed that the flotation behaviors of artificially mixed minerals were similar with those of single minerals (Fig. 2 ...
Consumption of refractory grade bauxite within the market economies of the world is currently estimated to be between 700,000 and 800,000 metric tons per year and, combined with demand from the U.S.S.R. and the People's Republic of China, total world consumption of bauxite for use in refractory applications is thought to be in excess of 1 ...
Alumina content as results of flotation was analyzed by XRF. The results of XRF of flotation products show that increasing of alumina content. The optimum pH range of bauxite flotation using DDA as collectors can be achieved at pH 4 – 10.
Figure 1 is the flow chart of the flotation test. For single mineral flotation, the flotation concentrates and tails were filtered, dried, and weighed, and the recovery …
In this study, the effluent from the Bayer process of transforming bauxite into alumina, followed by dissolved air flotation (DAF) treatment, was evaluated to identify the best experimental conditions that generate less toxic or nontoxic effluent for discharge. Two freshwater organisms, the Chlorophyceae microalga Raphidocelis subcapitata (96 …
Gui et al. (2013) proposed a colour co-occurrence matrix-based image texture extraction method in a bauxite flotation plant. Compared with the grey-level co-occurrence matrix (GLCM), the proposed texture extraction method can obtain more effective information for grade monitoring, as the colour information is utilised.
high-sulfur bauxite is mainly sulfide, containing a small amount of sulfate. It is difficult to remove sulfur sulfate through flotation, so the primary target mineral for desulfitization is pyrite. 2.2. Methods 2.2.1. Flotation test All flotation experiments were performed in a flotation cell (1.5 L, XRF, China), and the agitation speed was ...
high-sulfur bauxite is mainly sulfide, containing a small amount of sulfate. It is difficult to remove sulfur sulfate through flotation, so the primary target mineral for desulfitization …
The lithium-rich bauxite flotation tailings are obtained from the Sanmenxia bauxite in Henan Province. The chemical composition of the lithium-rich bauxite flotation tailing samples is presented in Table 1. As seen in Table 1, the Li 2 O content was 0.59%, and the main impurities were Al 2 O 3 and SiO 2. Sodium bicarbonate (AR purity) was ...
Desilication test of bauxite with medium-low alumina-silica ratio(w(Al)/w(Si)) was carried out in the process of single-stage roughing and single-stage cleaning by …
During bauxite flotation, flotation indexes decrease with increasing water circulation time, resulting in the discharge of bauxite flotation wastewater as well as a waste of resources and great environmental safety risks. ... and the treated water was subjected to a flotation test and attained good indexes: the proportion of alumina …
Over the last three years significant progress has been made in developing a viable reverse flotation technology to upgrade the Chinese diasporic bauxite to an alumina to silica mass ratio greater ...
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 …
The lithium-rich bauxite flotation tailings are obtained from the Sanmenxia bauxite in Henan Province. The chemical composition of the lithium-rich bauxite …
Ore 3# was taken as the subject of a study on the effect of the dose of hexametaphosphate. The sample was ground to 75% < 0.075 mm, pulp density was 30%, and the pulp pH adjusted to 8.0. Sodium hexametaphosphate, activator, collectors, and ing agent were added in turn …
Find the best quality bauxite flotation-in the process of bauxite flotation and separation of silicon here at simo-chem. We are a professional manufacturer and supplier for industrial surfactants and it's chemical synthesis with over 20 years experience. ... Test result. Appearance. Light yellow semi-flow liquid. Meet. Valid content % 80±2 ...
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.
The bauxite flotation circuit is a long-time and complex separation process, consisting of the following flotation banks: roughing bank, rough-scavenging bank, clean-scavenging bank, cleaning I bank and cleaning II bank. Each flotation bank is comprised of dozens of flotation cells. ... In order to test the predictive ability of the model, the ...
Desulfurization of high sulfur bauxite is an important issue in Bayer alumina production. In this study, by using two anionic sulphydryl collectors (HX, HD) as mixed collectors (PYDH), the selectivity of flotation separation between pyrite and diaspore was improved, thereby reducing the sulfur content of high sulfur bauxite and ultimately meeting the production …
