Based on tonnage and copper feed grade an expert control system continuously selects between three predetermined froth velocity profiles labeled as low-velocity, medium …

The rougher flotation stage under study is composed of 5 banks, the first one consists only of one tank cell whereas the others consist of two, as shown in Fig. 1. The optimization of the rougher flotation process is a very important task in the mining industry, due to the high economic profit arising from an increase in the valuable recovery ...

Countercurrent rougher-cleaner and rougher-scavenger circuits, in which recycling streams step back one stage at a time, follow a general rule for the assignment of recovery. Finally, a flotation plant containing six flotation banks was examined as a case study. A program for calculating total circuit recovery, for all possible combinations of ...

banks of Buenavista del ... allowed the estimation of the froth recovery of floatable mineral in a 130 m3 rougher flotation cell.It was found that mineral transport along the froth was mainly non ...

Flotation bank composed of N cells. Making the common assumption of first-order flotation kinetics and fully mixed transport, recovery of mineral A and B in an isolated …

In this work, an indirect approach to estimate the flotation rate along rougher flotation banks is proposed. The new approach is based on the decreasing of collected mineral grades (on top of froth) and the feed characteristics. Flotation rates per liberation classes were used to reconstruct the TOF grades from the feed information.

Countercurrent rougher-cleaner and rougher-scavenger circuits, in which recycling streams step back one stage at a time, follow a general rule for the assignment of recovery. Finally, a flotation plant …

In this work, a procedure for modelling and simulating rougher flotation banks that is based on operating variables and parameters fitted by empirical data from plant measurements is presented. Recently, a new methodology for describing …

Fig. 1 shows a diagram, including instrumentation, of one of the five rougher flotation banks. Each bank consists of 9 OK-38 cells, in arrays of 2–3–4 cells. Detection of operating regions. Fig. 2 shows the concentrate grade g cc (fine trace) measurements in experimental data. It is apparent that a change in the operating region of the ...

An industrial flotation circuit consisting of five parallel rougher flotation banks, each bank provided with 9 cells of 42.5 m 3, was characterized. The air flow rate delivered over the cross-sectional area was directly measured using a simple device that provides a continuous measurement of local gas flow rate. The range of superficial gas ...

This paper presents the results of an investigation in which the new JKMRC Flotation Cell was used to determine the collection zone rate constant and froth zone recovery of a copper rougher ore ...

Rougher bank A: Feed = 1.48% A, 98.52% B: Concentrate = 14.2% A, 85.8% B: Tailing = 0.72% A, 99.28% B: Rougher bank B: Concentrate = 5.7% A, 94.3% B: Tailing = 0.35% …

Sequential recovery--Size curves for batch rougher and cleaner flotation of bornlte (first series--total--rougher recovery = 90 3%). reduced impeller speed and lower collector addition, are similar to those in Fig. 4 and confirm the general pattern of behaviour although the rougher flotation was less complete and the total rougher recovery was ...

Supomo et al. (2008) have discussed a control strategy to improve mass pull in PT Freeport's copper-gold rougher circuit in Papua, Indonesia, reporting an increase in recovery of 3.4%. The main ...

This molybdenum flotation circuit, based on 250-500 tons per 24 hours is designed for low-grade molybdenum ore having high-grade streaks and with pyrite-quartz gangue.It is also basically sound for many other friable sulphide ores, such as antimony, silver and even some lead ores. The basic ideas stressed in this moly flotation …

The collection of valuable minerals along rougher flotation banks was evaluated using top-of-froth measurements, which consist of sampling the froth surface. Considering non-selective froths ...

In this work, a procedure for modelling and simulating rougher flotation banks that is based on operating variables and parameters fitted by empirical data from plant measurements is presented. View.

The collection of valuable minerals along rougher flotation banks was evaluated using top-of-froth measurements, which consist of sampling the froth surface. Considering non-selective froths observed in rougher flotation circuits, it was found the top-of-froth grades were similar to the bubble load grades, which allowed for a direct …

[12 marks] b) Flotation circuits typically consist of banks of cells, with a rougher, cleaner, scavenger arrangement being a commonly used one. Sketch a rougher, cleaner, scavenger circuit of your own design labelling the banks and streams. [6 marks] c) An operator decides to decrease the froth depth in the cells in the rougher bank.

Flotation banks also known as rows or lines are serial arrangement of cells where the tail stream of one cell is the feed stream to the next cell down the bank. ... In this communication GAs are used in conjunction with a mathematical model of a rougher flotation bank to determine the froth depth profile that optimizes the overall bank ...

Request PDF | Flotation rate characterization along rougher flotation banks based on Top-of-froth measurement | At present, flotation rate characterization …

In this work, a procedure for modeling and simulation of rougher flotation banks, based on operating variables and parameters fitted from industrial data, is presented. This simulator is used to ...

It is not unusual to grind the rougher flotation concentrate to minus 200-mesh for more complete liberation of mineral from the gangue. COPPER FLOTATION CIRCUIT. The cyclone overflow from each ball mill goes to a Pulp Distributor which distributes the pulp to two or more parallel banks of Flotation Cells. These distributors …

Firstly, the copper rougher flotation process is presented in Section 2. Then, a cascaded recognition method for copper rougher flotation working conditions will be present in Section 3, which include the overall strategy of method, data fusion framework, identification model of feeding ore types and the recognition model of …

The data analyzed corresponds to rougher flotation banks of different Cu and Mo concentrators (Cortés et al., 1995, Yianatos et al., 2000, Yianatos et al., in press). The cell characteristics and cells arrangement in the flotation bank are shown in Table 1. Table 1. Rougher flotation bank characteristics. Plant

A procedure for modelling and simulating rougher flotation banks as a distributed process was developed. The model parameters were calibrated from plant operating data using a flotation rate evaluation based on the short-cut method, adjusted mass balances and a new approach to evaluate bubble load and froth recovery.

Flotation Circuits. Flotation circuits are typically comprised of rougher, scavenger and cleaner flotation banks. Rougher and scavenger banks are focused on recovery and thus provide maximum residence time. …

Short-cut method for flotation rates modelling of industrial flotation banks. November 2006. Minerals Engineering 19 (13):1336-1340. DOI: 10.1016/j.mineng.2005.12.010. Authors: Juan Yianatos ...

A modal examination of the products produced by the copper flotation rougher-scavenger circuit reveal important information regarding the limits to the efficiency of the process, imposed by mineralogy, fragmentation and flotation capacity. Let's discusses various aspects of rougher flotation circuit performance and how to evaluate …

In this work, a procedure for modeling and simulation of rougher flotation banks, based on operating variables and parameters fitted from industrial data, is presented. This simulator is used to ...

Abstract. This communication revisits previously reported results on froth depth profiling along a rougher flotation bank. The optimization problem is …

Figure 1 shows a diagram, including instrumentation, of one of the 5 rougher flotation banks. Each bank consists of 9 OK-38 cells, in arrays of 2-3-4 cells. ... Rougher flotation bank: flowsheet and instrumentation. Experimental data was collected for the circuit shown in Figure 1, over a period of about 20 hours, in order to cover fluctuations ...

The VisioFrothTM system was installed in the copper rougher circuit of 8 parallel banks of 10 cells. Based on tonnage and copper feed grade an expert control system continuously selects between three predetermined froth velocity profiles labeled as low-velocity, medium-velocity and high-velocity for each of the rougher banks (Figure 4).

Two rougher flotation banks consisting of cells of 130 m3 and 300 m3, were evaluated. All the samples from the industrial surveys were analysed by screening and mineralogy, and the mineral recovery …

The concentrator uses the two-stage grinding process, the ore is ground to about 85% passing 74 μm prior to flotation, the feed concentration is not more than 30% and the lead rougher bank is organized first; the lead rough concentrate is reground to 92.5% passing 74 μm rougher, and the lead concentrate is produced after four-time …