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bauxite flotation diaspore

Flotation techniques for separation of diaspore from ...

2010-3-1 · Flotation techniques for separation of diaspore from bauxite using Gemini collector and starch depressant XIA Liu-yin( 9?), ZHONG Hong(Js c), LIU Guang-yi( S ) School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China Received 19 February 2009; accepted 13 July 2009 Abstract: The floatability of diaspore and three kinds of silicate minerals, including ...

The Influence of Backwater Al3+ on Diaspore Bauxite

The effect of Al3+ in backwater on the flotation of diaspore bauxite was investigated by micro-flotation tests and the underlying mechanisms were investigated by inductively

Flotation separation of diaspore from aluminosilicates ...

2017-11-10 · A systematic study of diasporic bauxite flotation using commercial oleic acids with different iodine values as collector was conducted in this paper. Bench scale flotation tests for diasporic bauxite ore and micro-flotation tests for relevant pure minerals (including diaspore, pyrophyllite and kaolinite) were carried out at different conditions ...

The Influence of Backwater Al3+ on Diaspore Bauxite

2017-10-15 · The effect of Al3+ in backwater on the flotation of diaspore bauxite was investigated by micro-flotation tests and the underlying mechanisms were investigated by inductively coupled plasma (ICP ...

Separation of diaspore from bauxite by selective ...

2014-4-25 · Selective flocculation is a new method to solve the problem of China’s bauxite de-silication besides flotation and reverse flotation. The method of selective flocculation of bauxite using hydrolyzed polyacrylamide as flocculant was experimented and evaluated. The results of diaspore and kaolinite single mineral settling tests show that the difference between settlement yield of kaolinite ...

A review of pretreatment of diasporic bauxite ores by ...

2017-12-1 · As it was noted, diasporic bauxite ores (diaspore is naturally hydrophilic) have a low Al/Si mass ratio, and an extensive comminution has to be performed on the ore in order to liberate value and gangue minerals and prepare them for selective interaction with reagents (direct and reverse flotation) (Wen-li et al., 2014, Kurusu et al., 2009).

Flotation mechanism of octylic hydroxamic acid on

2013-4-19 · Bauxite resources are widely spread in the earth. However, the effective utilization of this mineral is still under infant. The conventional collector for diaspore mineral is oleic acid. It has three main drawbacks which are highly insoluble, large dosages in bauxite flotation, and low selectivity, which hinder its application in industry. In this research, octylic hydroxamic acid was ...

Ionic Effect of NaCl and KCl on the Flotation of Diaspore ...

2020-1-28 · Abstract. The major type of bauxite in China is low-grade diasporic bauxite, which is mainly composed of diaspore and kaolinite. Separation of silicate minerals by flotation technology can meet the requirements of Bayer process, but Na +, K + and Cl − +, K + and Cl −

Flotation de-silicating from diasporic-bauxite with cetyl ...

Solution chemistry of flotation separation on aluminum and silicate in diasporic-bauxite[J]. The Chinese Journal of Nonferrous Metals,2001,11(1):125–130. (in Chinese) Google Scholar [10] JIANG Hao, HU Yue-hua, QIN Wen-qing, et al. Mechanism of flotation for diaspore and aluminum-silicate minerals with alkyl-amine collectors[J].

2003-Flotation de-silicating from diasporic-bauxite with

2015-4-3 · AbstractUsing cetyl trimethylammonium bromide (CTAB) as collector, the flotation de-silicating from diasporic-bauxite was investigated. And the Zeta potentials and contact-angles of silicate minerals and diaspore were also stu-(died.)The results show that in the presence of 2×10~(-4) mol·L~(-1)CTAB, the surface charges of pyrophyllite, kaolinite and illite become more positive, and the cont...

Ionic Effect of NaCl and KCl on the Flotation of Diaspore ...

2020-1-28 · Abstract. The major type of bauxite in China is low-grade diasporic bauxite, which is mainly composed of diaspore and kaolinite. Separation of silicate minerals by flotation technology can meet the requirements of Bayer process, but Na +, K + and Cl − +, K + and Cl −

2003-Flotation de-silicating from diasporic-bauxite with

2015-4-3 · AbstractUsing cetyl trimethylammonium bromide (CTAB) as collector, the flotation de-silicating from diasporic-bauxite was investigated. And the Zeta potentials and contact-angles of silicate minerals and diaspore were also stu-(died.)The results show that in the presence of 2×10~(-4) mol·L~(-1)CTAB, the surface charges of pyrophyllite, kaolinite and illite become more positive, and the cont...

Flotation de-silicating from diasporic-bauxite with cetyl ...

【Abstract】 Using cetyl trimethylammonium bromide (CTAB) as collector, the flotation de-silicating from diasporic-bauxite was investigated. And the Zeta potentials and contact-angles of silicate minerals and diaspore were also stu-(died.)The results show that in the presence of 2×10~(-4) mol·L~(-1)CTAB, the surface charges of pyrophyllite, kaolinite and illite become more positive, and ...

A review of pretreatment of diasporic bauxite ores by ...

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%. Although the A/S rate achieved by the ...

学者频道_科创中国

Interfacial chemistry in flotation of diasporic bauxite 摘要: China has abundant bauxite resources, but these resources are mostly of a diaspore, which has a feature of low Al2O3 to SiO2 mass ratio, typically ranging from four to six.

Effects of Fine Minerals on Pulp Rheology and the ...

on the pulp rheology and flotation of diaspore‐pyrite mixture pulp in order to provide theoretical guidance for the flotation desulfurization of bauxite with different contents and kinds of fine ...

A Theoretical Study of the Effect of Carboxyl Hydroxamic ...

2012-2-1 · Although the flotation process is considered economical in the desilication of Chinese diasporic bauxite, the existing collectors fail to separate these ores because of their poor adsorption selectivity over other minerals. The present study was an attempt to seek a collector for selective flotation of diaspore over aluminosilicates.

Collection and Selectivity Contrast of Propyl Gallate and ...

2021-2-24 · China’s diaspore-type bauxite is a refractory ore, since silicate minerals, such as kaolinite, are often closely embedded with diaspore. Propyl gallate (PG) is an effective and novel collector of diaspore. Detailed flotation behaviors of diaspore and kaolinite with PG and traditional collector sodium oleate (NaOL) were investigated in this work.

A review of the surface features and properties, surfactant ...

2018-6-3 · 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 ...

Reverse flotation of diaspore from aluminosilicates by a ...

2010-8-1 · The flotation of diaspore, kaolinite, pyrophyllite, illite and the diaspore-kaolinite mixture were studied with a new cationic organosilicon quaternary ammonium collector entitled QAS222. The acting mechanism of the collector with the four minerals was analyzed by Zeta potential measurement and FT-IR spectrum analysis. The results indicate that the QAS222 was effective in the reverse flotation ...

2003-Flotation de-silicating from diasporic-bauxite with

2015-4-3 · AbstractUsing cetyl trimethylammonium bromide (CTAB) as collector, the flotation de-silicating from diasporic-bauxite was investigated. And the Zeta potentials and contact-angles of silicate minerals and diaspore were also stu-(died.)The results show that in the presence of 2×10~(-4) mol·L~(-1)CTAB, the surface charges of pyrophyllite, kaolinite and illite become more positive, and the cont...

学者频道_科创中国

Interfacial chemistry in flotation of diasporic bauxite 摘要: China has abundant bauxite resources, but these resources are mostly of a diaspore, which has a feature of low Al2O3 to SiO2 mass ratio, typically ranging from four to six.

Flotation de-silicating from diasporic-bauxite with cetyl ...

【Abstract】 Using cetyl trimethylammonium bromide (CTAB) as collector, the flotation de-silicating from diasporic-bauxite was investigated. And the Zeta potentials and contact-angles of silicate minerals and diaspore were also stu-(died.)The results show that in the presence of 2×10~(-4) mol·L~(-1)CTAB, the surface charges of pyrophyllite, kaolinite and illite become more positive, and ...

Frontiers | Flotation Separation of Diaspore and Kaolinite ...

2019-12-12 · Introduction. Bauxite is an important raw material for industrial production of alumina (Zhang et al., 2017a, 2018a).In China, diaspore is the primary mineral in bauxite, accounting for more than 98% of the total reserves (Zhang et al., 2016).China's

Effects of Fine Minerals on Pulp Rheology and the ...

on the pulp rheology and flotation of diaspore‐pyrite mixture pulp in order to provide theoretical guidance for the flotation desulfurization of bauxite with different contents and kinds of fine ...

A review of the surface features and properties ...

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

Flotation mechanism of octylic hydroxamic acid on

2013-4-19 · Bauxite resources are widely spread in the earth. However, the effective utilization of this mineral is still under infant. The conventional collector for diaspore mineral is oleic acid. It has three main drawbacks which are highly insoluble, large dosages in bauxite flotation, and low selectivity, which hinder its application in industry. In this research, octylic hydroxamic acid was ...

Application of Intensifying Secondary Concentration ...

The reverse flotation tests of intensifying secondary concentration aiming at bauxite from Guizhou province were studied. The results show that diaspore concentrate directly used in the Bayer-mineral processing method can be obtained by using the intensifying secondary concentration technology without

Kaolinite removal from bauxite by flotation - SciELO

1. Introduction. Chinese bauxite ores have required more elaborated beneficiation processes than the Brazilian bauxite ores. This fact is a consequence of the low alumina/silica (Al/Si) mass ratio in currently mined Chinese ores (Xu et al., 2004 XU, Z., PLITT, V., LIU, Q.Recent advances in reserve flotation of diasporic ores - A Chinese experience.

中南大学309课题组 - 英文论文

2018-12-9 · The Effect of Quartz on the Flotation of Fine Wolframite with Octyl Hydroxamic A 2018-11-20 The Influence of Backwater Al3+ on Diaspore Bauxite Flotation 2018-11-20 Carbon [email protected] yolk-shell structure with good morphology stability for impr 2018-11-20