Kinetic Laws of the Dissolution of Alunite from Alunite Ores with an Alkali Solution

Geidarov, A. A.; Alyshanly, G. I.; Gulieva, A. A.; Tagieva, L. T.; Alieva, V. A.

doi:10.1134/s0036029520090050

Cited by 3 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, if ions (AlO  2 and SO  2 4 ), which pass into solution during the reaction, are to be immediately removed from the system, then the reaction parameters will not change but will always remain in the intense zone. In this case, increasing the temperature does not make much sense, and the concentration of alkali can be reduced [19].…”

Section: Resultsmentioning

confidence: 99%

Processing of Zaglik Alunite Ore by Heap and Tank Leaching

Heydarov¹,

Ch.M.²,

Alyshanly³

et al. 2021

AChJ

View full text Add to dashboard Cite

The present work is continuation of our investigations on heap leaching, suggested for the first time. Various variants of alkaline leaching of alunite from alunite ore without preliminary roasting have been studied. In present work the parameters of heap and tank alkaline leaching of alunite ore have been determined. The proposed methods can also be used to extract aluminum from poor alunite rocks. At alunite was washed 17 times with 3% NaOH solution, the degree of weight loss was 30.65%, while with 14 times washing with 10% alkali solution, the weight loss was 47.82 %. The results obtained are also typical for percolation leaching. An increase in alkali concentration and temperature intensifies the leaching process. At a ratio of solid and liquid phases of 1:5, a stirring speed of – 700 cycles/min, and an alkali concentration of 110.9 g/l, at 800C within 60 minutes’ alunite dissolves up to 96% and goes into solution with accompanying components

show abstract

Section: Resultsmentioning

confidence: 99%

Processing of Zaglik Alunite Ore by Heap and Tank Leaching

Heydarov¹,

Ch.M.²,

Alyshanly³

et al. 2021

AChJ

View full text Add to dashboard Cite

show abstract

“…Studies have shown that alunitized rock decomposes with alkali solutions as easily as a pure mineral [4]. We studied the kinetic regularities of the leaching of alunite ore in alkaline solutions in [12]. Alunite ore is treated with the alkaline solution at a temperature of 95-98 0 C and leached within 30 minutes.…”

Section: Resultsmentioning

confidence: 99%

Study of Conditions of Transition of Silicon Into Aluminate Solution During Leaching of Raw Alunite and Its Removal From This Solution

Alyshanly¹

2021

AChJ

View full text Add to dashboard Cite

When extracting aluminum from the alunite ore of the Zaglik deposit by leaching, silicon, which is part of the alunite, passes into solution in the form of a silicate ion in a small amount. Silicon in solution not only degrades the quality of the produced alumina but also contributes to the clogging of pipes and equipment during its production. In this work, we investigated the dynamics of the distribution of silicon in the liquid phase upon leaching of raw alunite at room temperature and heating in an alkaline solution. A method of extracting silicon from an aluminate solution is proposed to obtain high-quality aluminum hydroxide. Desilication was carried out by recirculating the parent solution. The silicon dioxide sorption ability from the solution of the material, which was obtained as a result of acid activation of alunite mud, was investigated. It was found that alunite mud activated with sulfuric acid, in comparison with non-activated mud, has the ability to separate the silicate ion from the aluminate solution with a higher percentage of yield

show abstract

“…It is known that in alunite rocks, alunite is easily dissolved in solutions of caustic potassium (sodium) above 60 0 C, and at the same time, aluminum goes into the solution in the form of potassium (sodium) aluminate, as well as alkali metal sulfates. Quantitative characteristics of the alunite dissolution kinetics were studied in [18]. However, the extraction of gal-lium and vanadium from raw alunite ore into solution has not been studied.…”

Section: Introductionmentioning

confidence: 99%

Study of Conditions for the Associated Extraction of Vanadium and Gallium During Alkaline Leaching of Raw Alunite Ore

Heydarov¹,

Osmanova²

2023

AChJ

View full text Add to dashboard Cite

Alunite ore containing a significant amount of aluminum, iron oxide, titanium dioxide, and other valuable components (Ga – 0.003 wt%, V – 0.0315 wt.%) is the main raw material for the production of alumina and promising raw material for the production of gallium and vanadium. This paper studies the dynamics of the distribution of gallium and vanadium in the liquid phase during the dissolution of raw alunite in an alkaline solution are studied. The results have showed that alkali concentration, leaching temperature, liquid-to-solid ratio have a significant effect on the degree of extraction of these elements from solution. It has been found that when raw alunite ore is leached with a 5% NaOH solution (S:L=1:6) for 2 hours, the degree of extraction of Ga and V is, respectively, 50.2 and 59.23% of their total content in the rock

show abstract

Kinetic Laws of the Dissolution of Alunite from Alunite Ores with an Alkali Solution

Cited by 3 publications

References 4 publications

Processing of Zaglik Alunite Ore by Heap and Tank Leaching

Processing of Zaglik Alunite Ore by Heap and Tank Leaching

Study of Conditions of Transition of Silicon Into Aluminate Solution During Leaching of Raw Alunite and Its Removal From This Solution

Study of Conditions for the Associated Extraction of Vanadium and Gallium During Alkaline Leaching of Raw Alunite Ore

Contact Info

Product

Resources

About