Detailed Project Report on recovery of gold from concentrate and waste without using mercury

 RECOVERY OF GOLD FROM CONCENTRATE
AND WASTE WITHOUT USING MERCURY
(CODE NO.1945)  


         Gold a bright yellow metal with resplendent luster.  It  is exceedingly  malleable  and ductile.  It can be beaten  into  the sheets  so  thin  that 2,50,000 of them may be  placed  one  over another  to  form a pile one inch in thickness, it can  be  drawn into wires so thin that a length equal to 50 miles weight just  1 oz.   It  does not oxidize in air or oxygen at any temp. It  is unaffected  by the hydrochloric acid, nitric acid and sulphuric acid, even at temp. 100oC. A mixture of hydrochloric acid  (Aqua Regia)  dissolves  the metal.  It is not attacked by the  alkali hydroxides, sulphur and sulphur dioxide, but is acted upon by the hydrogens, bromine being the most active.  It readily amalgamates with mercury, a properly which has been taken advantage of in the extraction of gold from antiferrous sand in which gold is present in a finely dispersed form.

         Gold is widely distributed in nature, though in minute quantities. It is  present in significant concentrations in source quartz views and alluvial gravels, and these constitute the principal sources for the commercial extraction of the metal. It occurs  in sea water in low concentrations (5-269 parts  in 100 millions) and its recovery from this source is uneconomical.

         Owing to its bright appearance, unalterability in air and occurance in the native condition, gold was probably one of  the earliest metals discovered by the man. It is the metal most used even today for jewellery and international monetary transactions.  


COST ESTIMATION

Plant Capacity                                    GOLD RECOVERY FROM CONCENTRATE & WASTE
Land & Building (1.5 Acres)            Rs. 3.45 Cr  
Plant & Machinery                             Rs. 1.50 Cr    
W.C. for 1 Month                                Rs. 3.04 Cr
Total Capital Investment                  Rs. 8.24 Cr          
Rate of Return                                   44%  
Break Even Point                              39%



INTRODUCTION    
TYPES OF GOLD ORE    
OCCURENCE    
USES & APPLICATIONS    
PROPERTIES & CHARACTERISTES    
CHEMICAL LEACHING AS AN ALTERNATIVE TO MERCURY    
MARKET SURVEY    
MANUFACTURING PROCESS OF GOLD RECOVERY FROM CONCENTRATE
AND WASTE WITHOUT USING MERCURY    
PROCESS FLOW DIAGRAM    
METHOD OF MINING AND CONCENTRATION    
DIRECT SMELTING METHOD TO OBTAIN GOLD FROM CONCENTRATE    
MODEL OF A MERCURY FREE PROCESSING PLANT    
DETAILS OF CONCENTRATION METHODS    
DETAILS OF GOLD RECOVERY METHODS    
HEALTH & SAFETY FACTORS    
PRINCIPLES OF PLANT LAYOUT    
PLANT LOCATION FACTORS    
EXPLANATION OF TERMS USED IN THE PROJECT REPORT    
PROJECT IMPLEMENTATION SCHEDULES    
SUPPLIERS OF RAW MATERIALS    
SUPPLIERS OF PLANT AND MACHINERY    


APPENDIX – A :

 1.      COST OF PLANT ECONOMICS      
 2.      LAND & BUILDING                                      
 3.      PLANT AND MACHINERY                                  
 4.      FIXED CAPITAL INVESTMENT                             
 5.      RAW MATERIAL                                         
 6.      SALARY AND WAGES                                     
 7.      UTILITIES AND OVERHEADS                              
 8.      TOTAL WORKING CAPITAL                                
 9.      COST OF PRODUCTION                                   
10.      PROFITABILITY ANALYSIS                               
11.      BREAK EVEN POINT                                     
12.      RESOURCES OF FINANCE                           
13.      INTEREST CHART                                       
14.      DEPRECIATION CHART                                   
15.      CASH FLOW STATEMENT                                   
16.      PROJECTED BALANCE SHEET