report 8 - EXM 301 MINERAL PROCESSING LAB REPORT 8 A REPORT...

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EXM 301 MINERAL PROCESSING LAB REPORT 8 A REPORT ON FLOAT AND SINK ANALYSIS OF COAL KYLIE NETTLETON 30262427 CONTENTS
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1.00AIM 2.00INTRODUCTION 3.00PROCEDURE 4.00RESULTS 5.00DISCUSSION 6.00CONCLUSION 7.00REFERENCES 8.00APPENDIX A – RAW DATA 1.0AIM
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2.00INTRODUCTION A dense medium circuit begins with screening the feed to try to eliminate as many fines as possible by washing the ore. Fines are an undesirable trait in a dense medium circuit because they contaminate the medium and have an adverse affect on the efficiency of the separation. Large amounts of fines in the circuit can alter the fluid density, volume of solids and can cause blockages with in the system so efficient screening processes are essential. Once the material is screened, progresses through the dense medium filled separator to sort the floats from the sinks. Both fractions then pass over separate vibrating screens to recover the residual dense medium remaining on the particles. The particles then continue to be processed as can be seen from the illlistration of a typical dense medium circuit in figure 2.01 below 1 . Dense medium separation is essential for the treatment of coal. Coarser partiicles are typically treated with Drum and Drewboys separators while the fines are usually run through a dense medium cyclone. Labrotory tests such as the one conducted in this experiement are essential to asses the suitability of of dense medium separation, to detirmine the expeceted yield of coal and ash content, and to calculate the most economical density to use. Figure 2.01 A Typical Dense Medium Circuit
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This note was uploaded on 05/13/2011 for the course METALLURGY 1107 taught by Professor Hegurange during the Three '10 term at Murdoch.

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report 8 - EXM 301 MINERAL PROCESSING LAB REPORT 8 A REPORT...

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