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Review Summary of sulfur hazards in high‑sulfur bauxite and

Excessive sulfur content in bauxite and complex valence changes in the Bayer process have serious impacts on products and equipment. This paper will introduce pre-treatment desulfurization and post-treatment desulfurization methods such as roasting, flotation, electrochemical and biological methods.

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A study of bauxite tailing quality improvement by …

method (ASTM D2013). The reverse flotation experiments were conducted in a 1.5 liter of Denver flotation equipment with 1 liter of aqua dm. It used 2 ml of dodecylamine 98% as the collector agent, 9 gram of sodium hexametaphosphate (SHMP) as the dispersant, food grade starch as the depressant, and Dowfroth 1016 as the frothers.

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Bauxite Beneficiation Process And Equipment

Bauxite beneficiation process is mainly flotation. Tailings reprocessing for effective mineral recovery, we provide equipment and mineral processing plant, get the price online!

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Flotation Separation of Pyrite from Refractory High-Sulfur Bauxite

Effect of Pulp pH. Pulp pH is an important parameter in the flotation of high-sulfur bauxite, which would influence the surface charge and floatability of minerals [].The Effect of pulp pH on the sulfur content in the concentrate and Al 2 O 3 recovery was investigated and shown in Fig. 4.The flotation conditions were fixed as TMBI dosage 120 g/t, copper sulfate dosage 60 …

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(PDF) Bauxite Residue Flotation as an Alternative for Iron

Bauxite residue (BR) is a byproduct of the alumina production by Bayer process. BR generated from gibbsitic bauxite usually presents iron as major element associated with hematite and goethite ...

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An overview of existing flotation equipment based on

An overview of existing flotation equipment based on energy consumption and particle size 3.1. Fine Flotation In this section, technological and conceptual advances in FFS are briefly introduced.

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Application Examples of Flotation Machines | SpringerLink

12.1.1.2 Application of Flotation Machines in a Shanxi Aluminium Industry Company. The ores produced by an aluminium industry company in Shanxi belong to the typical diasporic bauxite, with complex ore patterns. Most of the ores are granular and flaky, some are slab-flaky or cryptomerous, and the crystal size is generally 0.005 ~ 0.03 mm.

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Bauxite Beneficiation by flotation method – ZJH minerals

Bauxite beneficiation by flotation process can be roughly divided into washing – primary beneficiation – crushing – grinding – classification – separation – concentrate concentration–filtration,several processes. ... ZJH mainly focus on producing and supply laboratory and pilot scale type of ore dressing equipment for Mining and ...

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Separation of silica from bauxite via froth flotation

These papers constitute the only literature found about reverse bauxite flotation, for producing gibbsitic or diasporic bauxite concentrates. 3. Experimental. The sample used in the tests was provided by Companhia Brasileira de Alumínio – CBA, from its under-development mine in Miraí. A ROM ore dressing test was done at CBA's preparation ...

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Experimental Investigation on Desiliconization of Low …

application of low-grade bauxite for alumina production. Keywords High-silica bauxite Flotation Desiliconization Introduction By 2015, the discovered bauxite reserves of China has reached to 4.71 billion tons according to the statistics [1, 2], mainly distributed in Shanxi, Guangxi, Guizhou and Henan Province [3].

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Bauxite beneficiation equipment and process

Here are some common equipment and processes used in bauxite beneficiation: 1. Crushing: The first step in bauxite beneficiation is crushing. Bauxite ore is crushed into small particles to facilitate its transportation and processing. Jaw crusher and impact crusher are commonly used for primary crushing. ... Flotation: Flotation is a process of ...

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Four Bauxite Beneficiation Methods

Bauxite beneficiation and refining equipment is composed of primary crusher, secondary crusher, cone crusher, impact crusher, flotation cell, belt conveyor and other auxiliary machines. The …

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A review of the surface features and properties, surfactant …

In addition to the valuable mineral diaspore, the main associated gangue minerals in diasporic bauxite are kaolinite, illite, and pyrophyllite [3].The essence of diasporic bauxite flotation is separating the diaspore from these clay-type gangue minerals, whether by the direct flotation or reverse flotation methods [9].It is, therefore, of great importance to control and expand the …

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Research progress on desulfurization technology of high-sulfur bauxite

As the mainstreams of bauxite desulfurization technologies, the bauxite pre-desulfurization (roasting, electrochemistry, biology, flotation, etc) and Bayer process desulfurization (oxidation and ...

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Bauxite beneficiation equipment and process

Here are some common equipment and processes used in bauxite beneficiation: 1. Crushing: The first step in bauxite beneficiation is crushing. Bauxite ore is crushed into small particles to …

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Fine Bauxite Recovery Using a Plate-Packed Flotation …

Dynamics (CFD) and Population Balance Model (PBM) 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, the recovery of Al2O3 increased by 2.11%, and the grade of Al2O3 increased by 1.85 ...

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Bauxite Residue Flotation as an Alternative for Iron

As a first and exploratory trial, BR from a gibbsitic bauxite processing was submitted to the reverse cationic flotation where the reagents and process conditions were similar as usually applied during iron ore beneficiation. An attrition scrubber, an elutriator and a conventional flotation cell were used for desliming and flotation tests.

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Positive flotation method for bauxite

The invention discloses a positive flotation method for bauxite, and relates to an improvement on an ore dressing method for bauxite. The flotation method comprises the steps of ore grinding, grading and flotation. The method is characterized in that: original ore pulp obtained by grinding and grading the bauxite is sprayed into a scavenging foam collecting tank in the flotation …

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Tailings Re-Processing Line

In the process of separation, flotation and shaking table is always used. If we want to achieve comprehensive recovery of several kinds of minerals from graphite tailings, we should combine several separation methods. 9. Bauxite Tailings: When deal with the bauxite tailings, flotation separation and magnetic separation is the common process.

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Bauxite Processing Equipment

FEECO offers a variety of custom equipment and process solutions for the processing of bauxite. From processing bauxite for use in aluminum production, refractory, or proppants, we can develop a process solution that fits your …

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A Case Study of Producing Alumina from High-Sulfur Diasporic Bauxite

Effects of particle size of the high-sulfur bauxite, flotation agent dosage, pulp pH main flotation parameters on the sulfur removal rate were mainly discussed. And the optimum conditions can be obtained. ... Excessive sulfur impurities in bauxite have significant impact on the Bayer process, such as corrosion of equipment and pipelines ...

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Effect and mechanism on the flotation desulfurization of …

high sulfur bauxite flotation desulfurization. Keywords: high-sulfur bauxite, flotation, mixed collector, desulfurization 1. Introduction Aluminum has a wide range of applications and is the second most widely used metal after steel (Cheng et al., 2023). It finds wide applications in industries such as construction, transportation, power, and

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Experimental Study on Flotation Desulfurization of High …

8, the flotation desulphurization index is the best, but flotation desulphurization under acidic conditions, there are a series of problems such as equipment corrosion, so the flotation desulphurization pulp pH value of 8 is selected as the flotation pH value. 3.4 Test on the type and dosage of collector

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Characterization of High Sulfur Bauxite and Its Phase …

Effects of particle size of the high-sulfur bauxite, flotation agent dosage, pulp pH main flotation parameters on the sulfur removal rate were mainly discussed. And the optimum conditions can be obtained. Experimental results show that under the optimum condition of content of particle below 0.074 mm 72.4%, pH 9.5, collector dosage of 140 g/t ...

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Bauxite Beneficiation by flotation method – ZJH minerals

Bauxite beneficiation by flotation process can be roughly divided into washing – primary beneficiation – crushing – grinding – classification – separation – concentrate …

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Treatment technique for wastewater from bauxite flotation …

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. To determine how to return the wastewater back to the flotation process, this study aimed to identify the main components affecting the flotation …

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Synthesis and characterization of a novel collector for the

The sulfur in bauxite, however, affects the quality of the product, increases the consumption of alkali, corrodes steel equipment, and pollutes the environment (Cheng, Li, Cao, & Zhang, 2023; Zheng et al., 2017).The most common sulfur-containing minerals in high-sulfur bauxite are pyrite (FeS 2) and its isomers (marcasite and melnikovite), as well as sulfates …

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Characterization and flotation of low-grade boehmitic bauxite …

Bauxite is the main raw material in primary aluminum production and its reactive silica content and mass ratio of Al 2 O 3 to SiO 2 (A/S) has a critical role in the economic viability of Bayer process. As a major source of the reactive silica, clay impurities should be removed from the ore as much as possible by a beneficiation method such as froth flotation before the Bayer …

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Characterization and flotation of low-grade boehmitic bauxite …

Request PDF | Characterization and flotation of low-grade boehmitic bauxite ore from Seydişehir (Konya, Turkey) | Bauxite is the main raw material in primary aluminum production and its reactive ...

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Bauxite flotation equipment without heat source

The utility model relates to bauxite flotation equipment without a heat source. The bauxite flotation equipment can effectively solve the problems that existing bauxite flotation equipment is big in occupied space and high in operation cost. The bauxite flotation equipment comprises crushing equipment, separation and classification equipment, concentrate process equipment, tailing …