Flotation experimental research of calcareous–siliceous phosphorite

Tuo, Biyang; Yang, Jianwen; Han, Le; Wang, Jianli; Yao, Youli

doi:10.1016/j.minpro.2015.11.006

Cited by 14 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its development and utilization directly relates to national food security. It is also an essential component in phosphorous-based chemicals [3][4][5]. China's cumulative reserves of phosphorite comprise approximately twenty billion tons, mainly distributed across Hubei, Guizhou, Yunnan, Szechwan, and Hunan province [6,7].…”

Section: Introductionmentioning

confidence: 99%

Application and Mechanism of Anionic Collector Sodium Dodecyl Sulfate (SDS) in Phosphate Beneficiation

et al. 2017

View full text Add to dashboard Cite

Phosphate ore is a valuable strategic resource. Most phosphate ore in China is collophane. Utilization of mid-low grade collophane is necessary to maintain social sustainable development. The gravity-flotation combination separation process can be utilized to separate mid-low grade collophane, but the process consumes a large quantity of acid in the reverse stage. Sodium dodecyl sulfate (SDS) was used as a dolomite collector in this study to reduce the acid consumption of collophane flotation. SDS effectively removed dolomite from the gravity concentrate when no other reagents were present. Flotation test results showed that, compared to the conventional gravity-flotation process, the proposed SDS-based process reduced phosphoric acid dosage from 6.1 kg/t to 3.9 kg/t with similar separation results. The SDS action mechanisms on dolomite were further investigated by zeta potential analysis, single mineral flotation tests, infrared spectrum detection, and theoretical analysis. The results indicate that the SDS adsorption on dolomite is mainly physical adsorption, and that favorable separation effects between collophane and dolomite may be attributed to physical adsorption and entrainment. In addition, it also indicates that the physical adsorption can be utilized to remove dolomite from phosphate on account of zeta potential differences when the separate feed is coarse.

show abstract

Section: Introductionmentioning

confidence: 99%

Application and Mechanism of Anionic Collector Sodium Dodecyl Sulfate (SDS) in Phosphate Beneficiation

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The radii of REEs and the radius of Ca 2+ are very close. REEs are supposed to be associated with apatite through replaced calcium by isomorphous [15]. Presumably, REEs are present in the form of ions in the lattices of apatite, which makes it extremely difficult to directly extract REEs from apatite.…”

Section: Quartzmentioning

confidence: 99%

The Occurrence States of Rare Earth Elements Bearing Phosphorite Ores and Rare Earth Enrichment Through the Selective Reverse Flotation

et al. 2019

View full text Add to dashboard Cite

The reserve of rare-earth element-bearing phosphorite ores in Guizhou province in western China is huge. Increased demand for the different products manufactured from rare-earth elements has resulted in an extreme need for reasonable and comprehensive extraction of rare-earth elements. An improved understanding of rare-earth element occurrence states in single minerals of ores is important for their further processing. In this paper, rare-earth element contents were analyzed by inductively coupled plasma (ICP), and the occurrence states in single minerals were further investigated through SEM-EDS and focused ion beam-scanning electron microscope (FIB-SEM) methods. The results indicate that rare-earth element contents of apatite are far more than that of dolomite. No independent mineral of rare-earth elements exists for the studied sample. Rare-earth elements are present in the form of ions in the lattices of apatite. Based on the analysis of occurrence states and properties in single minerals, the distribution of rare-earth elements in the flotation process was investigated by reverse flotation technology. It shows that rare-earth elements are mainly concentrated in apatite concentrate. Under the optimized conditions, the P2O5 grade increases from 11.36% in the raw ore to 26.04% in the concentrate, and the recovery is 81.92%, while the total rare-earth oxide grade increases from 0.09% to 0.21% with the recovery of 80.01%, which is similar to P2O5 recovery. This study presents the feasibility of extracting rare-earth elements from rare-earth element-bearing phosphorite ores through the flotation of apatite.

show abstract

“…In Guizhou province, most of phosphate ores are dolomitic phosphorites. More than 70% of the ores are low‐grade dolomitic‐collophane deposits with a very high content of dolomite …”

Section: Introductionmentioning

confidence: 99%

Study on the effect of collector and inhibitor acid on the floatability of collophane and dolomite in acidic media by TOF‐SIMS and XPS

Chen

Zhang

Hart

et al. 2020

Surface & Interface Analysis

View full text Add to dashboard Cite

Most of the phosphate ore in southern China is contained within siliceous dolomite phosphate rock, and more than 90% of it is medium and low-grade collophane.Reverse flotation of carbonate gangue minerals (dolomite) from phosphate in acidic media is still the most economical method for the reduction of carbonate in collophane concentrates. It has been recognized that the collophane and dolomite in acidic media affect the surface properties of minerals, thereby affecting their flotation properties. In this paper, HCl and H 3 PO 4 were used as regulators or inhibitors to study the flotation behaviour of collophane and dolomite. The inhibition mechanism of collophane and dolomite in two acid media was studied by time-of-flight secondary ion mass spectrometry (TOF-SIMS) and X-ray photoelectron spectroscopy (XPS) analyses. It was found that the addition of an inhibiting acid can partially depress the collophane and improve the flotation of dolomite, thus achieving their flotation separation, and the inhibition effect of H 3 PO 4 on collophane is better than that of HCl.And it was found by TOF-SIMS analysis that the increase in acid concentration did not reduce the adsorption concentration of the collector, and the main reason for the inhibition was not the decrease in the adsorption concentration of the collector. The adsorption capacity of collector on dolomite surface with H 3 PO 4 is greater than that with HCl. The XPS test indicated that metaphosphate (PO 3 −1 ) is the pivotal ion for depressing collophane under acid conditions. K E Y W O R D Scollophane, dolomite, floatation, TOF-SIMS, XPS

show abstract

Flotation experimental research of calcareous–siliceous phosphorite

Cited by 14 publications

References 6 publications

Application and Mechanism of Anionic Collector Sodium Dodecyl Sulfate (SDS) in Phosphate Beneficiation

Application and Mechanism of Anionic Collector Sodium Dodecyl Sulfate (SDS) in Phosphate Beneficiation

The Occurrence States of Rare Earth Elements Bearing Phosphorite Ores and Rare Earth Enrichment Through the Selective Reverse Flotation

Study on the effect of collector and inhibitor acid on the floatability of collophane and dolomite in acidic media by TOF‐SIMS and XPS

Contact Info

Product

Resources

About