Gravity Concentration

Burt, R.O.

doi:10.1002/14356007.b02_21

Cited by 42 publications

(72 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Wilfley table is one of key unit operations which can help in diagnostic or amenability of the gravity concentration process for different minerals/ore. The detailed principle of wilfley table has been discussed at different places [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Feed characteristics include particle size, density distribution, volumetric flow rate and solid concentration. Similarly the operating parameters include wash water flow rate, deck tilt angle, shake amplitude, shake frequency, splitter position and side tilt angle [3,5,6]. Wilfley table has been used to recover celestite ore [7] and also for the beneficiation of low grade manganese ore [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Recovery of Chromite Values from Plant Tailings by Gravity Concentration

Tripathy¹,

Ramamurthy²,

Singh³

2011

JMMCE

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recovery of Chromite Values from Plant Tailings by Gravity Concentration

Tripathy¹,

Ramamurthy²,

Singh³

2011

JMMCE

View full text Add to dashboard Cite

show abstract

“…For this reason, there has been renewed interest in gravity separation techniques, as mining companies move towards more sustainable processes. Burt (1984) stated that the key to effective gravity separation is a good understanding of the ore mineralogical characteristics. He suggested that the following ore mineralogical characteristics be investigated:…”

Section: Gravity Separationmentioning

confidence: 99%

“…Figure 2.11 (Burt, 1984) shows that for -1.180+ 0.212 mm particles a concentration criterion of above 1.8 indicates that the two minerals are separable. In Table 6.1 these values are highlighted in green.…”

Section: 1mentioning

confidence: 99%

The effects of high voltage pulse treatment on ore characteristics and separation performances of a porphyry copper ore

Parker¹

View full text Add to dashboard Cite

Technological advancement in large scale mining has changed little in the past 20 years.Increasing global energy demands and continuously decreasing ore grades are putting pressure on the mining industry to develop new, energy efficient technologies. Comminution has the highest energy consumption across the mining industry, and its energy demands continue to increase as finer grinding is required to liberate the valuable minerals in lower grade ores.Novel devices, such as high voltage pulse devices (HVP), have the potential to reduce the overall energy consumption, as they offer preferential breakage at the mineral grain boundaries. Good liberation occurs in coarser products and gangue can be removed upstream. HVP devices offer the opportunity to replace and change old inefficient comminution circuits or to be strategically incorporated within a current circuit. They also provide an opportunity for improving the downstream separation performances. However, to date, little research has been conducted on the direct effects of HVP treatment on these mineral separation processes.In this thesis the effects of HVP treatment on the characteristics and surface chemistry of a sample of Los Bronces porphyry copper ore were initially investigated to determine the potential for improved separation performance. A commercially available SELFRAG Lab device was used to HVP treat the ore either in batch-mode or using the single-particle/single pulse (SP/SP) method. The results showed that the ore responded well to SELFRAG batch treatment, with improvements seen in the ore's resistance to breakage and mineral liberation. Batch flotation and Wilfley shaking table tests therefore followed, using SELFRAG batch treated and mechanically crushed ore, to determine the differences in the grade-recovery curves. Further froth flotation tests were done using SELFRAG SP/SP treated ore for comparison.Results indicate that SELFRAG batch treatment of Los Bronces ore significantly reduced the ore's resistance to breakage when compared to conventional (mechanical) crushing. However, it consumed 21.8 kWh/t whereas mechanical crushing only consumed 1.5 kWh/t to produce the same extent of breakage. The SELFRAG SP/SP method was developed to reduce the consumed energy so that overall energy savings could be realised. In this method, SELFRAG treatment pre-weakens the particles with little to no breakage, so the JKRBT was used to break the particles ii to -3.35 mm. This method consumed 4.55 kWh/t and the product had the same resistance to breakage as the mechanically crushed product.Mineral liberation results showed that chalcopyrite was more liberated in the SELFRAG batch treated product than in the mechanically crushed product, noticeably in the coarser size fractions.This was confirmed in the preliminary float/sink gravity separation results where improved chalcopyrite recoveries were seen. Although SELFRAG batch treatment improved the valuable mineral liberation, it also led to noticeable surface chemistry changes. The surface chemistry of p...

show abstract

“…A amalgamação é um processo altamente sensível aos fatores que afetam a interface ouro-mercúrio, tais como superfícies recobertas por óxidos de ferro, presença de minerais deletérios e de sais de metais básicos, de sulfetos e presença de matéria orgânica (BURT, 1984). É um processo que em larga escala é custoso e pouco eficiente.…”

Section: Formação De Amálgamaunclassified

Caracterização tecnológica de minérios auríferos por análise automatizada de imagens obtidas por microscopia eletrônica de varredura.

Nery¹

View full text Add to dashboard Cite

Gravity Concentration

Abstract: The article contains sections titled: 1. Introduction 2. Principles … Show more

Cited by 42 publications

References 1 publication

Recovery of Chromite Values from Plant Tailings by Gravity Concentration

Recovery of Chromite Values from Plant Tailings by Gravity Concentration

The effects of high voltage pulse treatment on ore characteristics and separation performances of a porphyry copper ore

Caracterização tecnológica de minérios auríferos por análise automatizada de imagens obtidas por microscopia eletrônica de varredura.

Contact Info

Product

Resources

About