scholarly journals Increasing Efficiency of Copper-Molybdenum Ore Flotation using Measurement of Pulp Absorption Capacity

2020 ◽  
Vol 5 (3) ◽  
pp. 188-200
Author(s):  
V. V. Morozov ◽  
Erdenezul Jargalsaikhan ◽  
I. V. Pesriak
Keyword(s):  
Aqueous Phase ◽  
Economic Effect ◽  
Optimization Criterion ◽  
Absorption Capacity ◽  
Processing Plant ◽  
Allyl Ester ◽  
Residual Concentration ◽  
Flotation Reagents ◽  
Flotation Process ◽  
Automatic Control Systems

A promising line in development of reagent consumption automatic control systems is applying data on measuring collector concentration in the pulp aqueous phase. For effective using data on the concentration of the nonionic collector – allyl ester of amylxanthogenic acid – in the process of flotation, the studies were carried out and the method for analyzing its residual concentration in the flotation pulp liquid phase was developed. The developed spectral technique for measuring the concentration of amylxanthogenic acid allyl ester in the pulp aqueous phase showed stable results in the temperature range of 10 to 25 °С, pH range of 8.5 to 11.0. This allowed applying the technique to measuring residual concentration of AeroMX- 5140 collector in the operation of bulk sulphide flotation in copper-molybdenum ore beneficiation. The laboratory tests allowed determining connection between the indicators of residual concentration with the main indicators of copper-molybdenum flotation. The studies showed that increasing the residual concentration of the non-ionic collector occurs with increasing its consumption and pH of the pulp aqueous phase. It is shown that significant increase in metal recoveries is observed at similar residual collector concentrations: for copper, in the range of 0.25 to 0.5 mg/l, and for molybdenum and pyrite iron, at the concentrations from 0.25 to 1 mg/l. The possibility of using the nonionic collector residual concentration as the informational indicator of the flotation process has been substantiated. It is proposed to use the ore absorption capacity in relation to the collector applied as an indicator of the ore grade. It is shown that using this indicator reduces relative variance for the dependences of the yields of individual ore types and increases the accuracy of determining the composition of the processed ore as a mixture of typical ore grades. An algorithm for automated control of the consumption of flotation reagents based on the advanced control of the processed ore elemental and mineral composition was developed and tested at Erdenet GOK processing plant, with the calculation of the pulp absorption capacity in relation to the nonionic collector, including the beneficiation process indicators determination using an economically-oriented optimization criterion. The expected economic effect from the reduction of metal losses amounted to USD 145 thous.

Recovery of Fine Cassiterite from Tin Tailings Slime by Froth Flotation

2013 ◽  
Vol 634-638 ◽  
pp. 3478-3483 ◽  
Author(s):  
Zhuo Yue Lan ◽  
Yong Cheng Zhou ◽  
Xiong Tong
Keyword(s):  
Fine Particles ◽  
Froth Flotation ◽  
Eastern China ◽  
Mineral Processing ◽  
Laboratory Scale ◽  
Processing Plant ◽  
Flotation Reagents ◽  
Flotation Process ◽  
South Eastern

Tin gravity slime tailings of Datun mineral processing plant in south-eastern China contains fine and ultrafine cassiterite. Tin recovery from the slime tailings was studies in the presence of different flotation reagents. A flotation process has been used on a laboratory scale to investigate the effect of various reagents such as collectors, auxiliary collector, activators, ect., and theirs dosages in neutral flotation environment. To reach an optimum tin recovery, different dosages of the reagents were also studied. Due to cassiterite is friable and a large amount of fines and slimes were generated. Usually de-sliming is used to prevent slime coating and to increase the recovery of tin. However, analyses have shown that fine particles in the sample mostly contain tin, thus de-sliming was not suggested. By applying the process, ultrafine cassiterite can be efficiently recovered from the tailings slime by one rougher process, and the concentrate assaying 1.20% Sn with a recovery of 89.10% was obtained.

Liquid-liquid extraction of succinate using a dicopper cryptate

2020 ◽  
Author(s):  
Riccardo Mobili ◽  
Sonia La Cognata ◽  
Francesca Merlo ◽  
Andrea Speltini ◽  
Massimo Boiocchi ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Visible Spectrum ◽  
Tca Cycle ◽  
Residual Concentration ◽  
Waste Products ◽  
Liquid Liquid Extraction ◽  
The Tca Cycle ◽  
Quantitative Extraction ◽  
Uv Visible

<div> <p>The extraction of the succinate dianion from a neutral aqueous solution into dichloromethane is obtained using a lipophilic cage-like dicopper(II) complex as the extractant. The quantitative extraction exploits the high affinity of the succinate anion for the cavity of the azacryptate. The anion is effectively transferred from the aqueous phase, buffered at pH 7 with HEPES, into dichloromethane. A 1:1 extractant:anion adduct is obtained. Extraction can be easily monitored by following changes in the UV-visible spectrum of the dicopper complex in dichloromethane, and by measuring the residual concentration of succinate in the aqueous phase by HPLC−UV. Considering i) the relevance of polycarboxylates in biochemistry, as e.g. normal intermediates of the TCA cycle, ii) the relevance of dicarboxylates in the environmental field, as e.g. waste products of industrial processes, and iii) the recently discovered role of succinate and other dicarboxylates in pathophysiological processes including cancer, our results open new perspectives for research in all contexts where selective recognition, trapping and extraction of polycarboxylates is required. </p> </div>

scholarly journals Liquid-liquid extraction of succinate using a dicopper cryptate

2020 ◽  
Author(s):  
Riccardo Mobili ◽  
Sonia La Cognata ◽  
Francesca Merlo ◽  
Andrea Speltini ◽  
Massimo Boiocchi ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Visible Spectrum ◽  
Tca Cycle ◽  
Residual Concentration ◽  
Waste Products ◽  
Liquid Liquid Extraction ◽  
The Tca Cycle ◽  
Quantitative Extraction ◽  
Uv Visible

<div> <p>The extraction of the succinate dianion from a neutral aqueous solution into dichloromethane is obtained using a lipophilic cage-like dicopper(II) complex as the extractant. The quantitative extraction exploits the high affinity of the succinate anion for the cavity of the azacryptate. The anion is effectively transferred from the aqueous phase, buffered at pH 7 with HEPES, into dichloromethane. A 1:1 extractant:anion adduct is obtained. Extraction can be easily monitored by following changes in the UV-visible spectrum of the dicopper complex in dichloromethane, and by measuring the residual concentration of succinate in the aqueous phase by HPLC−UV. Considering i) the relevance of polycarboxylates in biochemistry, as e.g. normal intermediates of the TCA cycle, ii) the relevance of dicarboxylates in the environmental field, as e.g. waste products of industrial processes, and iii) the recently discovered role of succinate and other dicarboxylates in pathophysiological processes including cancer, our results open new perspectives for research in all contexts where selective recognition, trapping and extraction of polycarboxylates is required. </p> </div>

The Flotation Process with High Intensity Conditioning and Cleaning for Fine Coal

2014 ◽  
Vol 1010-1012 ◽  
pp. 1636-1639 ◽  
Author(s):  
Ji Hui Li ◽  
Li Qiang Ma ◽  
Yan Zhao Li ◽  
Wen Jing Li ◽  
Jian Wei Yue
Keyword(s):  
High Intensity ◽  
Coal Sample ◽  
Ash Content ◽  
Clean Coal ◽  
Flotation Reagents ◽  
Flotation Process ◽  
Fine Coal ◽  
Percentage Points ◽  
Coal Slime

The properties analyzing of flotation feed sample told that this fine coal sample is high-ash and hard-to-float coal slime. The ash reduction comparison of the step-by-step release flotation test with high intensity conditioning (HIC) or not, and the comparison of flotation test with HIC and adding depressant were made. The results showed that HIC can significantly improve the flotation effect for high-ash and hard-to-float coal slime. Comparing with the traditional step-by-step flotation process, if it meets the demand of ash content is 10.00% and 8.00%, the clean coal yield with HIC will increase 18 and 29 percentage points respectively; comparing with the effect of floatation adding depressant, HIC has more help to reduce the ash content and increase the yield of clean coal. In addition, HIC will save a lot of flotation reagents.

scholarly journals The research of the absorption potential effect of the minerals surface on the cassiterite flotation process

2020 ◽  
pp. 70-79
Author(s):  
Galina Gazaleeva ◽  
◽  
Liudmila Nazarenko ◽  
Elena Dmitrieva ◽  
◽  
...  
Keyword(s):  
Flow Rate ◽  
Aluminum Sulfate ◽  
Zero Point ◽  
Initial Product ◽  
Flotation Reagents ◽  
Flotation Process ◽  
Enrichment Plant ◽  
Abrupt Jump ◽  
Absorption Potential ◽  
Tin Content

Introduction. The use of flotation for tin additional recovery and in order to increase integrated use of raw materials is one of the main trends in tin ores beneficiation technology development. Research aim is to identify the mechanism of reagents action on the pulp particles surface during the flotation of tin-containing products containing cassiterite. 78 "Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal". No. 3. 2020 ISSN 0536-1028 Methodology. Pulp absorption potential was measured on Dispersion DT-310 electro-acoustic spectrometer from Dispersion Technolodgy Inc., USA. The object of research was the cleaning products of the collective concentrate obtained from beneficiation sludge tailings of Solnechny enrichment plant (the Khabarovsk Territory). The surface of the initial product was sequentially treated with the following reagents: sodium hexametaphosphate, kerosene, liquid glass, aluminum sulfate and the Asparal-F collector reagent with measurements of the absorption potential. At the same time, open flotation experiments were carried out with fractionated removal of the foam product. Results. The research results have shown that the main influence on pulp absorption potential is exerted by a depressor - aluminum sulfate. With its consumption of 800 and 1600 g/t, the value of the absorption potential decreases to the level of minus 1.3–1.4 mV, having a negative extremum. With a further increase in depressor consumption to 2400 g/t, there is a abrupt jump in the absorption potential to positive values. The study of absorption potential value dependence on Asparal-F reagent-collector consumption has shown that an increase in the collector flow rate to 400 g/t causes a abrupt jump and alternation of the potential from + to – (– 0.05 mV) and the intersection of the curve with the zero point allows to determine its optimal flow rate 360 g/t. Flotation of the initial product with fractional removal of foam has shown that it was this jump that led to an increase in the quality of fractions from 0.40 to 1.04% in terms of tin content. Further processing of the obtained flotation tin product according to the gravitational scheme made it possible to obtain conditioned tin concentrate with a tin content of 24.8%. Conclusions. The study of thin intermediate products tin flotation process in the tailings processing flow chart of Solnechny enrichment plant with pulp ζ-potential evaluation revealed some regularities of this indicator influence on the flotation results and the optimal consumption of flotation reagents.

scholarly journals Assessing the possibility of using dry concentration for oxidized pegmatite and granites at the Kedrovoe feldspar deposit

2021 ◽  
Vol 1 (7) ◽  
pp. 45-54
Author(s):  
Tatiana A. Buzunova ◽  
◽  
Varvara N. Shigaeva ◽  
Keyword(s):  
Raw Materials ◽  
Raw Material ◽  
Processing Plant ◽  
Resource Saving ◽  
Laboratory Equipment ◽  
Flotation Reagents ◽  
Feldspar Concentrate ◽  
Silica Alumina ◽  
Concentration Methods ◽  
Tailings Ponds

Introduction. Feldspar raw material is a natural source of silica, alumina, and alkali metal oxides. Each type of feldspar is distinguished by its applications and concentration methods. The main effective method of feldspar raw material concentration is flotation in the course of which the majority of harmful impurities are separated. However, this method is rather costly due to flotation reagents purchase, tailings ponds organization and maintenance, etc. Research relevance. Feldspar dry concertation technologies are promising in terms of resource-saving but uncommon. So, the development of a dry concertation technology for feldspar raw materials seems highly relevant. Research objective is to study the possibility of employing dry concentration technology to process feldspar raw materials at the new Kedrovoe deposit Methods of research. Laboratory equipment of JSC Uralmekhanobr was used for the research, namely centrifugal crusher DC-0.5; centrifugal deflection mill; laboratory-scale cascade classifier; dry electromagnetic separator SMS-20M ITOMAK, and tribo electrostatic separator. Results. The trials confirmed that it is possible to process Kedrovoe feldspar raw materials by dry methods and effectively use centrifugal crushing and grinding as preparation of raw materials for concentration. Feldspar concentrate with a mass fraction of Fe2O3 – 0.30%; SiO2 – 69.42%; Al2O3 – 17.36%; K2O + Na2O – 11.84% has been obtained, which meets the specifications. Conclusions. The technological studies confirmed the possibility in principle of using feldspar raw material dry concentration for oxidized pegmatite and granites of the Kedrovoe deposit at the processing plant of Malyshevskoe Ore Management JSC. Saleable feldspar concentrate has been obtained.

scholarly journals A New Collector for Effectively Increasing Recovery in Copper Oxide Ore-Staged Flotation

Minerals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 595
Author(s):  
Renfeng Zhu ◽  
Guohua Gu ◽  
Zhixiang Chen ◽  
Yanhong Wang ◽  
Siyu Song
Keyword(s):  
Particle Size ◽  
Copper Oxide ◽  
High Efficiency ◽  
Average Particle Size ◽  
Economic Feasibility ◽  
Processing Plant ◽  
Average Particle ◽  
Entrainment Rate ◽  
Flotation Process ◽  
New Type

A new method, staged flotation for effectively increasing the recovery of ultra-fine copper oxide ore with a new type of collector (ZH-1, C3-5 carbon chain xanthate) is proposed for the first time. The flotation process and mechanism were examined by flotation tests, entrainment rate analysis, laser particle size experiments and microscopic imagery as well as economic feasibility analysis. It was demonstrated that the collector isoamyl sodium xanthate (ISX) shows a good collection ability (recovery exceeded 95%) for azurite, but the recovery was relatively much lower for malachite (only near 80%) due to the different particle size distribution. The new type of xanthate ZH-1 has shown a high-efficiency collection performance for fine-grained malachite. The recovery achieved for −10 μm malachite was more than 95% when the ZH-1 dosage was 150 mg/L, while the average particle size of −10 μm malachite sharply increased from 4.641 μm to 9.631 μm. The batch flotation results indicated that the copper oxide flotation recovery increased from 79.67% to 83.38%, and the grade also raised from 18.08% to 18.14% after using the staged flotation technology with ZH-1 as collector during the flotation of −25 μm ore. It was confirmed that this technology was quite effective for the recovery of copper oxide at the Dishui Copper Processing Plant, which successfully increased its gross profit by 1.6 million US$ per year.

scholarly journals Review on Beneficiation Techniques and Reagents Used for Phosphate Ores

Minerals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 253 ◽  
Author(s):  
Ruan ◽  
He ◽  
Chi
Keyword(s):  
Raw Material ◽  
Low Grade ◽  
Recovery Ratio ◽  
Flotation Reagents ◽  
Flotation Process ◽  
Phosphate Ore ◽  
Feed Stock ◽  
Chemical Products ◽  
Phosphate Ores ◽  
Phosphate Concentrate

Phosphate ore is an important raw material for manufacturing fertilizers and phosphorous chemical products. While most of the phosphate resources cannot be directly treated as feed stock due to the low grade of P2O5 and high content of impurities. In order to obtain a qualified phosphate concentrate, the beneficiation of the low-grade phosphate ore is, hence, of great necessity. Many beneficiation techniques can be employed to upgrade the P2O5 grade of phosphate ores based on their characteristics in chemical composition and texture. The flotation process is most widely applied to balance the P2O5 recovery ratio and cost. In this review, the dominant techniques for the beneficiation of phosphate ores are introduced. Moreover, the factors that affect the flotation of phosphate ore, including the properties of mineralogy, flotation reagents (depressants and collectors) and flotation medium, were systematically analyzed.

scholarly journals Hyperspectral Characteristics of Oil Sand, Part 1: Prediction of Processability and Froth Quality from Measurements of Ore

Minerals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1138
Author(s):  
Benoit Rivard ◽  
Jilu Feng ◽  
Derek Russell ◽  
Vivek Bhushan ◽  
Michael Lipsett
Keyword(s):  
Oil Sands ◽  
Surface Mining ◽  
Hyperspectral Data ◽  
Separation Performance ◽  
Processing Plant ◽  
Oil Sand ◽  
Flotation Process ◽  
Blending Process ◽  
And Control ◽  
Crushed Ore

This study is the first of two companion papers using hyperspectral data to generate predictive models of oil sand ore and froth characteristics as a potential new means for process control. In Alberta, Canada, shallow oil sands deposits are accessed by surface mining and crushed ore is transported to a processing plant for extraction of bitumen using flotation processes. The ore displays considerable variability in clay, bitumen, and fines which affects their behavior in flotation units. Using oil sand ore spanning a range of bitumen and fines characteristics, flotation experiments were performed to generate froth in a batch extractor to determine ore processability (e.g., separation performance) and froth characteristics (color, bitumen, solids). From hyperspectral observations of ore, models can predict the %bitumen content and %fines (particle passing at 44 and 3.9 µm) of ore but the models with highest r2 (>0.96) predict the solids/bitumen of froth and the processability of ore. Spectral observations collected on ore upstream of the separation vessels could therefore offer a first order assessment of froth quality for an ore blend before the ore enters the plant. These models could also potentially be used to monitor and control the performance of the blending process as another means to control the performance of the flotation process.

scholarly journals Efficiency Assessment of Allflot Pneumatic Flotation Machines in Beneficiation Slime Fraction of Old Tailings at Norilsk Processing Plant

2021 ◽  
pp. 98-104
Author(s):  
A.V. Lebedok ◽  
A.S. Kurtukov ◽  
I.S. Cheburashkin ◽  
L. Markworth
Keyword(s):  
Fine Particles ◽  
Economic Feasibility ◽  
Processing Plant ◽  
Efficient Technology ◽  
Tailing Dump ◽  
Flotation Process ◽  
Efficiency Assessment ◽  
Flotation Cell ◽  
Development State ◽  
Flotation Machines

The article presents a rational technology for processing old tailings and slime (cyclone overflows) of the -25+0 microns class at tailing dump No. 1 of the Norilsk Processing Plant. One of the current and urgent problems is the lack of an efficient technology to process the slime part of old tailings with fine particles of useful metals, which is not processed and is transferred to temporary tailing dump. Current development state of the flotation equipment and technologies allows to consider the problem of coarse-size particle flotability generally solved. The results of pilot testing of the Allflot pneumatic flotation cell that operates at the 5% content of solids in the slime at Nordinves LLC are presented. Comparative materials are provided on the Allflot re-treatment slurry flotation cell (500 l) and a laboratory mechanical machine (1.5 l). The results of qualitative and quantitative calculations of the flotation process as applied to the slime fraction of old tailings are given. Conclusions about the economic feasibility of using the Allflot Pneumatic Flotation Machine for slime beneficiation are made.

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