How to sort out difficult-to-select molybdenum ores?

The types of refractory molybdenum ores can be roughly divided into: high oxidation rate molybdenum ores, talc-containing molybdenum ores or talc-containing copper-molybdenum ores, carbon-containing, carbonaceous shale and organic molybdenum carbon-type molybdenum ores or polymetallic, disseminated Molybdenum ores with finer particle size or ultra-fine particles, as well as molybdenum ores with complex structures, etc.

1. Overview of high oxidation rate molybdenum ore and mineral processing technology

Molybdenum ores with high oxidation rates are naturally hydrophilic, have low hydrophobicity, incomplete crystallization, and are mostly fine-grained, making them very difficult to select. There are many types of molybdenum oxides, and the upper parts of many molybdenum deposits are as long as hundreds of meters, or as little as 10m, with varying degrees of presence. oxidation zone.

For molybdenum ores with high oxidation rates and severe mud formation, a flotation process of one coarse and two sweeps can be used, using kerosene as a collector and pine alcohol oil as a foaming agent, to obtain a molybdenum coarse concentrate with a higher molybdenum content. , then add an appropriate amount of water glass as a dispersant in the ball mill, and through sodium sulfide induced flotation, part of the molybdenum-containing coarse concentrate can be obtained.

2. Overview of talc-type molybdenum ore and beneficiation process

Talc-type molybdenum ore refers to molybdenite ore containing a certain amount of talc. Since the floatability of talc and molybdenite is very similar, their beneficiation is very difficult, and a joint beneficiation method is generally required.

Common ores adopt magnetic separation - classification - mud and sand separation - flotation process and coarse grinding - magnetic separation - magnetic tailings desliming - molybdenum roughing - fine grinding - molybdenum selection process.

3. Overview of carbon-containing nickel-molybdenum ores and mineral processing technolog 

Carbon-containing nickel-molybdenum ore refers to symbiotic minerals with nickel and molybdenum as the main minerals, and containing vanadium, uranium and a variety of rare and precious metals with recovery value.

Technological methods such as electric furnace smelting of ferromolybdenum, roasting-leaching, high-temperature oxygen pressure leaching, and normal temperature wet leaching are often used to select nickel-molybdenum ores, but this process is not suitable for minerals with molybdenum grades above 2%. At this time, the nickel-molybdenum ore can be roasted and desulfurized at 600°C, and then the nickel and molybdenum can be extracted by using alkali for active oxygen leaching. .