RECOVERY OF GOLD FROM CONCENTRATE AND WASTE WITHOUT USING MERCURY

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           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.

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

Category:

Additional information

Plant Capacity

GOLD RECOVERY FROM CONCENTRATE & WASTE

Land & Building

(1.5 Acres) Rs. 3.45 Cr

Plant and Machineries

Rs. 1.50 Cr

Working Capital for 1 Month

Rs. 3.04 Cr

Total Capital Investment

Rs. 8.24 Cr

Rate of Return

44%

Break Even Point

39%