flowsheet options crushing followed by dump or heap leaching with cyanide this method of gold recovery is the preferred method for treating low-grade gold ores because of its low cost. between 10-20% of the gold recovered each year from primary sources is extracted by this technique. the advantages of this process are: • simplicity
the miller process is rapid and simple but it produces gold of only about 99.5 percent purity. the wohlwill process increases purity to about 99.99 percent by electrolysis. in this process a casting of impure gold is lowered into an electrolyte solution of hydrochloric acid and gold chloride.
these five illustrated flowsheets fully described in the article “small gold ore processing plants” follow a natural sequence.these start with a very simple. flowsheet aa and then by the addition of the more extensive equipment it is possible to take care of slight changes ← read the full metallurgy article
flowsheet no. 1 is typical of a gold bearing sulphide ore wherein a major recovery of gold values is made by means of the mineral jig and subsequently recoveries of gold and sulphide values are made by means of a “sub-a” flotation machine accounts for additional recovery of gold values to bring the total plant recovery to 90-97 percent of
the gold leaching process flowsheet. the flowsheet illustrated is one which has been proven in a number of operations and can be adapted to meet conditions best suited for the character of ore to be treated.
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