It was describe by the use of 600 series of flotation reagents which were developed primarily for the purpose of depressing carbonaceous and siliceous slimes in the flotation of gold ores. Carbonaceous material not only greatly increases the bulk and moisture content of a flotation concentrate, but its presence makes cyanidation of the concentrate difficult or impossible owing to reprecipitation of the gold during treatment.
Laboratory flotation cells are mainly for stirring, scrubbing, separating and concentrating small quantities of ore samples. ZJH laboratory flotation cells could be applied for the industies of geology, metallurgy, mining amp; mineral beneficiation, coal, gold, chemical engineering.
However, one of the most interesting methods is froth flotation. Froth flotation works by exploiting the hydrophobic properties of gold molecules. First, ore is ground into an extremely fine powder. The powdered ore is mixed with water to create a slurry, which is mixed with surfactants to increase the golds hydrophobicity.
The flotation process maximizes the enrichment of gold into sulfide minerals. The tailings can be directly discharged. Flotation in gold mines has low beneficiation costs. Application: Gold Flotation Process is used to process fine gold, sulfide gold containing quartz ore, multi metal gold containing sulfide ore, and carbon containing ore.
The ground up ore is mixed with water to create a slurry, which is mixed with surfactants to increase the golds hydrophobicity. This mixture is placed into a tank or flotation cell filled with distilled water. Air bubbles are pumped into the flotation cell and the water is agitated.
The ore is ground to 65 mesh, 55% being minus 200 mesh, in five tube mills, each in circuit with a Sub A Cell and a Dorr Classifier. A xanthate mixture is added with some aerofloat to the mills, and 75% of the precious metals is recovered from the flotation cells by the method already described.