آخرین محصولات
Interactions of clay minerals in copper–gold flotation: Part 2
The previous study suggests that clay minerals may interact with other minerals which release different cations in flotation and therefore influence the rheology of mineral suspensions. From literature, it has been found that clay minerals interact with a number of oxide minerals such as iron oxide, aluminium oxide and titanium oxide …
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The effect of phyllosilicate minerals on mineral
The clay minerals can be further classified into non-swelling (kaolinites and illites), and swelling (smectites and vermiculites) clays. Alternative classifications may incorporate the ... Interactions of clay minerals in copper-gold flotation: Part 1 - rheological properties of clay mineral suspensions in the presence of flotation reagents ...
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Selective inhibition of kaolinite entrainment during chalcopyrite
In practice, an example of clay minerals is kaolinite which is a major silicate gangue mineral encountered in base metal, critical and precious minerals deposits. Owing to kaolinite's colloidal size along with a crystal layered network structure, these properties exacerbate the extent of its entrainment during flotation ( Zhang et al., 2015 ).
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Effects of type and distribution of clay minerals on the physico
Various chemical products formed during chemical interactions between cement, clay minerals, and water can change the pore structure and thus the rock characteristics. ... flotation, and ...
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Interactions of clay minerals in copper–gold flotation: Part 1
The efficiency of copper–gold flotation may be restrained by the changed pulp rheology in the presence of clay minerals. During flotation, pH modifiers (NaOH, lime or sodium carbonate) are normally used to adjust flotation pH in the alkaline range, while introducing cations and anions. Meanwhile, surfactants, collectors and frothers are added ...
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The effect of clay minerals on the process of flotation of copper …
The main studies reported to date are systematised and classified in five topics in this paper: i) rheology of clayey pulps; ii) specific reagents for dispersing clays; …
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The beneficiation of the Pütürge pyrophyllite ore by flotation
Therefore, pyrophyllite and kaolinite should be considered as useful minerals, and the remaining minerals should be considered as gangue minerals. Therefore, the total pyrophyllite plus kaolinite content (65%) in Pütürge ore increased to 90–95% after flotation, whereas gangue-mineral contents (quartz, feldspar and illite–mica) decreased ...
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Reducing the entrainment of clay minerals in flotation using tap …
Clay minerals usually occur at less than 2 μm in the flotation of coal, oil-sands and base metal minerals no matter whether fine grinding is used or not [6]. It is expected that clay mineral particles are easily entrained into froth layers and cause high gangue entrainment in froth flotation as a result of the fine size.
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Interactions of clay minerals in copper–gold flotation: Part 2
The previous study suggests that clay minerals may interact with other minerals which release different cations in flotation and therefore influence the rheology of mineral suspensions. From literature, it has been found that clay minerals interact with a number of oxide minerals such as iron oxide, aluminium oxide and titanium oxide ( …
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Effect of clay minerals on pulp rheology and the flotation of copper
There is a common industrial observation that clay minerals are detrimental to flotation, including the generation of a low flotation recovery and/or low flotation product grade (Seaman et al ...
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Slime coatings in froth flotation: A review
For example, clay minerals can affect froth flotation through slime coating but also through other ways, such as affecting froth stability, changing pulp rheology and covering bubble surfaces, that also lower flotation recovery of value mineral (Cruz and Peng, 2016, Farrokhpay and Bradshaw, 2012, Forbes et al., 2014, Ndlovu et al., 2015, …
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The effect of clay minerals on the process of flotation of copper ores
The presence of clay leads to low recoveries in the process of flotation of copper ores which is also reflected in a decrease of the concentrates grades. Due to this, the scientific interest in studying the effect and mechanisms of action of clay minerals in the flotation process has increased, which has resulted in a better understanding of the …
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Role of Montmorillonite, Kaolinite, or Illite in Pyrite Flotation
It is widely acknowledged that clay minerals have detrimental effects on the process of flotation, but the mechanisms involved are still not fully understood. In this work, the effects of montmorillonite, kaolinite, and illite on pyrite flotation were investigated from the perspective of various structures of clay minerals.
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The Depressing Effect of Clay Minerals on the Floatability of
ABSTRACT In this work, the depressing effect of clay minerals on the floatability of chalcopyrite using PAX as collector was assessed through induction time and settling-turbidity measurements. The data obtained using these two techniques were correlated with the results of micro-flotation tests carried out to study the effect of …
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Professor Yongjun Peng
Interactions of clay minerals in copper-gold flotation: Part 1 - rheological properties of clay mineral suspensions in the presence of flotation reagents. Minerals Engineering, 50-51, 30-37. doi: 10.1016/j.mineng.2013.06.003
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Managing clay minerals in froth flotation—A critical review
ABSTRACT. Clay minerals are widely present in various ore deposits as gangue minerals. The processing of high-clay-content ores is becoming a significant …
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Understanding different roles of lignosulfonate in dispersing clay
During flotation, clay particles increase the pulp viscosity and produce a slime coating by adsorption on the surface of valuable minerals resulting in the reduction of the flotation grade and ...
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Lime use and functionality in sulphide mineral flotation: A review
In sulphide minerals flotation, these reactions involve oxidation of some species and reduction of others, ... In the case of kaolinite, the increased viscosity is attributed to Ca 2+ ions modifying the electrical double layer on clay mineral surfaces and contributing to the formation of network structures (Abdi and Wild, 1993, ...
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Effects of type and distribution of clay minerals on the physico
Various chemical products formed during chemical interactions between cement, clay minerals, and water can change the pore structure and thus the rock …
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(PDF) EFFECT OF CLAY MINERALS ON FROTH STABILITY IN MINERAL FLOTATION
The reactivity of clay minerals and variety of these reactions are greater than any other known colloidal material. While it is acknowledged that clay minerals can cause problems in mineral flotation, the literature contains conflicting evidence, particularly with respect to the effect of clays on froth stability.
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Lithium extraction from clay-type lithium resource
Meanwhile, the flotation research status of the main mineral of clay lithium ore was also summarized. Furthermore, we discussed the difficulties in the development and utilization of clay-type lithium ore and put forward the subsequent research orientation. ... Subramanian and Nielsen Lammers, 2022; Zhu et al., 2021). Clay mineral surface ...
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Metals | Free Full-Text | Correlation between Flotation and …
Fine particles, especially clay minerals, normally have three negative effects on flotation. The first negative effect is the coating of clay minerals on valuable minerals. This prevents the selective adsorption of collectors on valuable minerals and reduces their selective flotation [141,142,143,144].
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Managing clay minerals in froth flotation—A critical review
The processing of high-clay-content ores is becoming a significant challenge for the mining industry owing to the poor flotation performance caused by the presence of clay minerals. Different types of clay minerals are typically present in ore bodies, and they cause several detrimental effects to flotation that require different treatments.
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Review articleThe effect of clay minerals on the process of …
Some strategies to reduce the negative effect of clay minerals on the process of flotation are the use of a variety of reagents such as rheology modifiers and/or the use of reagents that adsorb on the surfaces of clay particles thus preventing them …
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Mitigating the negative effects of clay minerals on gold flotation by …
A high-clay-content gold ore and a clean gold ore with a low clay content were supplied by a gold flotation plant. The key mineral and elemental compositions of the two ores are listed in Tables 1 and 2, respectively.The analysis by quantitative X-ray Diffraction (XRD) indicates that the major gangue minerals in the high-clay-content ore …
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Regulation of coal flotation by the cations in the presence of clay
The concomitant clay minerals will cause a series of deteriorative effects during the flotation process of raw coal [4]. As a result, the efficiency of coal flotation is generally difficult to achieve a high-quality level due to the existence of clay minerals [5], [6], [7]. Clay minerals are abundant in the earth crust, which are the most ...
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7
Clay Minerals in Flotation and Comminution Operations (Chapter 7) - Clays in the Minerals Processing Value Chain. Home. > Books. > Clays in the …
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Managing clay minerals in froth flotation—A critical review
clay minerals on flotation, the recent research findings mainly from The University of Queensland group. The first negative effect is the coating of clay minerals on the surface of valuable ...
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Effects of Fine Minerals on Pulp Rheology and the Flotation of
In this study, the effects of four fine minerals, which were fine diaspore (FDIA), kaolinite, illite, and pyrophyllite (D50 is about 4.55 μm, D80 is about 10.78 μm), on the pulp rheology of the diaspore and pyrite mixed ores (D50 is about 120.53 μm, D80 is about 187.36 μm) and the recovery of pyrite were investigated through flotation tests, …
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Effects of clay species on coal flotation under the cationic regulation
The coal and clay minerals used in the flotation experiments were obtained from a certain mineral processing plant in Anhui province, China and Chifeng Clay Co., Ltd (Inner Mongolia, China) respectively. XRD patterns of coal and the two clay minerals in Fig. S1 indicated that the characteristic peaks of each sample accord with typical ...
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