·It can be seen from Eq that Sb 2 S 3 is deposited on the surface of gold particles forming a dense product layer and hindering the diffusion of CN − and O 2 to the gold particles leading to low leaching ratio [3 4] Effect of Antimony on Pretreatment Process The melting point of antimony compounds generated in the roasting process of antimonial
Anderson and Habashi have provided detailed information on the occurrence geology and mineralogy of the antimony ores Therefore only antimony containing minerals that are of higher industrial significance are listed in Table 3 These minerals have been categorized into three major groups sulfides oxides and mixed minerals
·Depending on the concentrations of gold and antimony different categories of Au Sb containing sulfide ores can be distinguished 1 ores in which gold is the main valuable component and antimony is a harmful impurity 2 gold bearing ores in which the amount of antimony is considerable and for which it is economically viable to recover
·Antimony is an important metal element silvery white with a high melting point high density and good thermal stability It is widely used in alloys flame retardants batteries and semiconductors However there are many types of antimony minerals According to geological causes and mineral combinations antimony ores can be divided into single antimony ores and
·At present more than 35% of China s gold resources with a total amount of more than 1 000 tons are difficult to be exploited and smelted and about 700 tons of gold ores with high arsenic antimony or sulfur are difficult to be directly cyanide leached Lei et al 2016 However as the gradual depletion of easy to treat gold ore reserves the complex
·Cyanidation tests on two ore samples from two different gold deposits are reported The first sample contained ppm gold with high arsenic and second sample had a low gold content ppm but a high silver content 160 ppm The first series of test work focused on the determination of conditions for extracting gold from the samples
·Wang Hao Tian Qinghua Xin Yuntao et on the process of pretreatment of refractory gold ores containing antimony by ozonation leaching[J] Gold Science and Technology 2016 24（4）：154 159 18
The first sample contained ppm gold with high arsenic and antimony The second sample had a low gold content ppm but a high silver content 160 ppm Three sulphidic gold ores containing various quantities of pyrite were tested with the Canadian Liquid Air oxygen uptake measurement method Oxygen demand of each gold ore is
·25% antimony are volatilized to antimony trioxide 25 40% antim ony ores are smelted in a blast furnace and 45 60% antimony ores are treated by liquation or iron precipitation A description of
·In general it is suitable for antimony containing refractory gold ores The principle is that gold can be enriched into smelting product directly The refractory gold ore with a high content of antimony % Sb Au 30 g/t is commonly used as an important raw material in the smelting of antimony The melting products are antimony
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