A Study of the Rejects Recovery in a Column Flotation

Performing of the flotation process in columns started in the year 1981. Since then, this new flotation technique became usual in many countries, including Brazil, where nowadays flotation columns are installed in plants for iron and phosphate ore concentration. Sees the need of a rational use of the phosphate of Barreiro, Araxá (MG), whose medium useful life is esteemed in 30 years, Federal University of Uberlândia in partnership with Bunge Fertilizers looks for in this work to develop conditions for use of the rejects of the flotation process. A laboratory flotation column was operated in discontinuous mode in order to examine the mixture of two different types of collectors, ore conditioning time and reagents dosages. Contents between 22 and 29 % P2O5 were obtained and Apatite recovery varied in the range of 18 to 58 wt %. The results shows that the use of mixture of the synthetic reagent KE and the rice oil soap provided an increase considerable in the selectivity of the concentrate.

Download Full-text

Exploratory Study of Gold Recycle from the Tailing of All-Sliming Cyanidation CIP

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.878.348 ◽

2014 ◽

Vol 878 ◽

pp. 348-352

Author(s):

Shuai Xing Shi ◽

Deng Feng Han ◽

Ming Tan ◽

Qiang Li

Keyword(s):

Organic Carbon ◽

Negative Influence ◽

Industrial Test ◽

Gansu Province ◽

Column Flotation ◽

Flotation Process ◽

Flotation Column ◽

Metallic Mineral ◽

Flotation Columns ◽

Leaching Residue

Gold ore is processed by all-sliming cyanidation CIP (carbon in pulp) at a gold mine in Gansu province of China. The leaching residue (tailing) Au grade is about 0.52 g/t, which is much valuable to be recovered. Mineralogical analysis shows that the loss of gold in leaching residue is mainly organic carbon adsorption gold and inclusion gold, accounting for 45.55% and 54.45% respectively. The inclusion gold is mostly wrapped by gangue and metallic mineral separately, accounting for 35.56% and 18.89%. Excluding the gold in gangue, both the gold adsorbed by organic carbon and wrapped in metallic mineral could be recycled by flotation process. Study has been carried out for recovering gold in cyanide residue by solely column flotation apparatus. During the semi-industrial test, B and E type sparger were adopted in flotation columns to evaluate their influence on process performance. To further improve metallurgy technology the ultrasonic device was introduced into flotation column tank. The results showed that ultrasonic pretreatment is negative influence, and the E type sparger is better than B type sparger. The concentrate Au grade is up to 10.14g/t, and34.3% of Au lost in tailing was recovered while feed grade being 0.52g/t. The column flotation process was proven being a proper way to recycle gold from the tailing of all-sliming cyanidation CIP.

Download Full-text

The Application and Development of Microbubble Column Flotation Technology in China

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.136.194 ◽

2010 ◽

Vol 136 ◽

pp. 194-201 ◽

Cited By ~ 1

Author(s):

Yong Tian Wang

Keyword(s):

Mineral Processing ◽

Dense Medium ◽

Column Flotation ◽

Flotation Process ◽

Fine Coal ◽

Column Type ◽

Flotation Columns ◽

Efficient Column ◽

Coal Slime ◽

High Ash Coal

Since the early 1980s, great progress has been made in microbubble column flotation technology. As one of the important mineral processing methods, the application and development of this technology in China are summarized in this paper from four respects. Firstly, a patented cyclone- static microbubble separation method was proposed to overcome the notable problems mentioned in the previous flotation columns. Secondly, microbuble column flotation was introduced to separate the high ash as well hard-to-separate coal slime generated from dense medium processes. The characteristics of the microbubble column, and the flotation process for fine coal and the high ash coal separation was analyzed. Thirdly, the application of microbubble column flotation in China was detailed introduced, especially the characteristics of series microbubble column flotation equipment, and efficient column type coal slime separation crafts were discussed. The application of microbubble column flotation particularly in low ash content coal preparation, and discarded coal slime processing technology were presented. Finally, microbubble column flotation has been extended to non-coal mineral processing, such as magnetite concentrate upgrading (concentration iron and removing silicon), sulfide copper mine separation, white tungsten flotation, etc., the related research was briefly introduced in this paper as well.

Download Full-text

Using Machine Learning Techniques to Estimate the Remaining Useful Life of a System with Different Types of Datasets

Proceedings of the 27th International Conference on Systems Engineering, ICSEng 2020 - Lecture Notes in Networks and Systems ◽

10.1007/978-3-030-65796-3_13 ◽

2021 ◽

pp. 139-147

Author(s):

Carlos Lemus ◽

Shahram Latifi

Keyword(s):

Machine Learning ◽

Remaining Useful Life ◽

Machine Learning Techniques ◽

Learning Techniques ◽

Different Types ◽

Useful Life

Download Full-text

Dynamic characterization of column flotation process laboratory case study

Minerals Engineering ◽

10.1016/s0892-6875(99)00121-1 ◽

1999 ◽

Vol 12 (11) ◽

pp. 1339-1346 ◽

Cited By ~ 8

Author(s):

T. Carvalho ◽

F. Durão ◽

C. Fernandes

Keyword(s):

Column Flotation ◽

Dynamic Characterization ◽

Flotation Process

Download Full-text

Statistical Modelling of Oil Removal from Surfactant/Polymer Flooding Produced Water by Using Flotation Column

Indonesian Journal of Chemistry ◽

10.22146/ijc.42820 ◽

2020 ◽

Vol 20 (2) ◽

pp. 360

Author(s):

Ku Esyra Hani ◽

Mohammed Abdalla Ayoub

Keyword(s):

Flow Rate ◽

Surfactant Concentration ◽

Gas Flow ◽

Produced Water ◽

Polymer Concentration ◽

Statistical Modelling ◽

Oil Removal ◽

Gas Flow Rate ◽

Flotation Process ◽

Flotation Column

The objective of this study was to investigate the effect of polymer (GLP-100) and surfactant (MFOMAX) towards the efficiency of oil removal in a flotation column by using the Response Surface Methodology (RSM). Various concentrations of surfactant (250, 372 and 500 ppm) and polymer (450, 670, and 900 ppm) produced water were prepared. Dulang crude oil was used in the experiments. Flotation operating parameters such as gas flow rate (1–3 L/min) and duration of flotation (2–10 min) were also investigated. The efficiency of oil removal was calculated based on the difference between the initial concentration of oil and the final concentration of oil after the flotation process. From the ANOVA analysis, it was found that the gas flow rate, surfactant concentration, and polymer concentration contributed significantly to the efficiency of oil removal. Extra experiments were conducted to verify the developed equation at a randomly selected point using 450 ppm of polymer concentration, 250 ppm of surfactant concentration, 3 L/min gas flowrate and duration of 10 min. From these extra experiments, a low standard deviation of 1.96 was discovered. From this value, it indicates that the equation can be used to predict the efficiency of oil removal in the presence of surfactant and polymer (SP) by using a laboratory flotation column.

Download Full-text