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.

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.

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.

scholarly journals A Simulation-Based Approach for Evaluating Cost and Performance of a Sediment Removal and Processing System for the Lower Susquehanna River Dams

2015 ◽  
Vol 3 (2) ◽  
pp. 107-116
Author(s):  
Saqib Qureshi ◽  
Raymond Fontaine ◽  
Samuel Saleeb ◽  
Joel Stein
Keyword(s):  
Dynamic Equilibrium ◽  
Cost Model ◽  
Ecological Impact ◽  
Processing System ◽  
Economic Feasibility ◽  
Processing Plant ◽  
Storm Events ◽  
Susquehanna River ◽  
Sediment Removal ◽  
Performance Curves

A series of three major dams and reservoirs located along the Lower Susquehanna River have historically acted as a system of sediment and nutrient pollution traps.  However, episodic pulses of these pollution loads are released following short-term extreme storm events, affecting subaquatic vegetation, benthic organisms, and the overall water quality in the Upper Chesapeake Bay.  In addition, all three reservoirs have reached a state of near maximum storage capacity termed as dynamic equilibrium.  Based on prior research, this study seeks to reduce the sediment buildup behind the dams through a sediment removal and processing operation, and thereby reduce the ecological impact of major storms.  A set of scour performance curves derived from a regression analysis, and a stochastic lifecycle cost model were used to evaluate the sediment scouring reduction and economic feasibility of three processing alternatives:  Plasma Vitrification, Cement-Lock, and Quarry/Landfill, and three removal amount cases:  Nominal, Moderate, and Maximum.  Since the scour performance curves treat the dams as static, a fluid system dynamics model was used to determine if the dynamic interaction between the capacitance of the dams during major scouring events is negligible or considerable.  A utility vs. cost analysis factoring in time, performance, and suitability of the alternatives indicates that a Cement-Lock processing plant at moderate dredging for the Safe Harbor and Conowingo Dams is the most cost-performance effective solution.

Evaluation of the economic feasibility of a processing plant for steelmaking slag

2015 ◽  
Vol 34 (2) ◽  
pp. 107-112 ◽  
Author(s):  
Deyvid RR Gonçalves ◽  
Wanna C Fontes ◽  
Julia C Mendes ◽  
Guilherme JB Silva ◽  
Ricardo AF Peixoto
Keyword(s):  
Economic Feasibility ◽  
Processing Plant ◽  
Steelmaking Slag

Test Set-Up for Irregular Vertical Hydraulic Transport in Deep Ocean Mining

2011 ◽  
Author(s):  
Arno M. Talmon ◽  
Cees van Rhee
Keyword(s):  
Fine Particles ◽  
Deep Ocean ◽  
Ocean Surface ◽  
Processing Plant ◽  
Coarse Particles ◽  
Hydraulic Transport ◽  
Test Set ◽  
Sea Floor ◽  
High Concentrations ◽  
Set Up

The mining of scarce minerals from the sea-floor at the depths of several kilometers and bringing them to a processing plant at the ocean surface requires new techniques. Seafloor Massive Sulphide (SMS) deposits are known to have an extremely rich mineral content, and are considered technically-economically-environmentally feasible to explore. Vertical hydraulic transport is the link between the sea-floor mining and the maritime vessel where the first processing stage will take place. Clogging of any part of the vertical transport system is an absolute disaster. Fine particles are conveyed faster than coarse particles. High concentrations of fines cannot bypass high concentrations of coarse particles, hence these particle fractions accumulate, potentially blocking the pipe. Fundamental research into yet unexplored physics is necessary. Besides numerical flow simulations, it is necessary to conducted experiments on the transport over large vertical distances. Such tests aim to investigate the dynamic development of density waves consisting of different particle diameters and clogging phenomenon thereof. Different particle size fractions have to be followed in real time as they overtake each other, and change their shape, merge and segregate. It is however impossible to back-scale the prototype riser to a one-pass laboratory test set-up, but the process can be simulated by repeated flow through an asymmetric vertical pipe loop, where slurry flow in the upward leg represent vertical hoist conditions and the slurry is returned quickly via the downward leg. The particle accumulation process is allowed to take place in the upward leg whereas in the downward leg the restoring process is nearly neutralized. The development of accumulations in time (= distance traveled to the ocean surface) can be followed upon multiple passes of the solids batches through the upward leg. The novelty of the described testing method is that the essentials of fundamental processes occurring in long vertical stretches are quantified in a specially designed laboratory setup. Via subsequent implementation of the results in a numerical flow simulation, reliable transport scenarios can be delineated.

Beneficiation of Ultrafine Cassiterite from a Tin Tailings by Flotation

2012 ◽  
Vol 616-618 ◽  
pp. 643-648
Author(s):  
Yong Cheng Zhou ◽  
Xiong Tong ◽  
Xiao Wang ◽  
Zheng Bin Deng ◽  
Xian Xie ◽  
...  
Keyword(s):  
Large Scale ◽  
Fine Particles ◽  
Lead Nitrate ◽  
Laboratory Scale ◽  
Sodium Hexametaphosphate ◽  
Low Grade ◽  
Flotation Process ◽  
Salicylhydroxamic Acid ◽  
Pine Oil

With the continuous depletion of primary tin ores, tin tailings has become an important source for the production of tin; however, the large-scale utilization of tin tailings is disappointedly scarce, due to its leanness in valuable minerals and insufficient methods available for processing such low-grade tailings. A flotation process has been used on a laboratory scale to investigate the effects of various reagents such as salicylhydroxamic acid, lead nitrate, sodium hexametaphosphate and pine oil on tin recovery at neutral pulp. Because 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 could be efficiently recovered from the slime tailings, and the concentrate assaying 1.82% Sn with a recovery of 76.90% was obtained.

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 Presence of Arsenic in Potential Sources of Drinking Water Supply Located in a Mineralized and Mined Area of the Sierra Madre Oriental in Mexico

Toxics ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 307
Author(s):  
Victor Manuel Escot-Espinoza ◽  
Yann Rene Ramos-Arroyo ◽  
Isabel Lázaro ◽  
Isidro Montes-Avila ◽  
Leticia Carrizalez-Yañez ◽  
...  
Keyword(s):  
Drinking Water ◽  
Fine Particles ◽  
Mine Waste ◽  
Principal Component ◽  
Water Source ◽  
Aqueous Sample ◽  
Mine Wastes ◽  
Flotation Process ◽  
Rainwater Infiltration ◽  
Guideline Values

Mine wastes from the La Aurora mine in the state of Guanajuato were generated by the flotation process and placed in four tailing dumps on the local stream while the plant operated. Given that these wastes contain toxic elements, it is important to establish their impact on the quality of several surrounding natural sources of water that are considered potential drinking water supplies. This study identified four water source types, in which the contents of arsenic (As), mercury (Hg), and thallium (Tl) were exceeded, according to international guideline values for drinking water quality. The first type of aqueous sample corresponded to leachates produced by rainwater infiltration in tailings and water–mineral waste interactions. The second type corresponded to surface water along the Xichú and La Laja Streams, and the third and fourth types involved two groundwater well samples and spring samples, respectively. The Chiquito Stream was used as a reference area that had not been impacted by the mine wastes. The isotopic signatures associated with δ34Ssulfate and δ18Osulfate compositions from the El Ojo de Agua spring are similar to those of the Santa María River and are different from those of the mine waste leachates. This study shows evidence of the presence of As in the El Ojo de Agua spring, which results from dissolution of secondary mineral phases that were produced by alteration of the mine wastes, which then migrated along the Xichú Stream system until reaching the spring. These As-bearing fine particles are prone to dissolution when in contact with this water source. Principal component analysis revealed that the observed As, Tl, and Hg can be attributed to weathering of the mine wastes. However, the results suggest that a natural contribution of these elements could be associated with rainwater–igneous rock interactions.

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.

Sign in / Sign up

Export Citation Format

Share Document