Lead-zinc ore oxidation phenomenon has serious mud, fine mud flotation divided into two, namely, native slime and secondary sludge. They seriously affect the oxidation of lead-zinc beneficiation technical indicators. They have a small mass, surface area, surface hydration film thickness, etc. This allows fine-grained mineral purpose has strong hydrophilic, recycling more difficult, so flotation reduced.

Second, the treatment process lead-zinc oxide

1, lead and zinc oxide mineral processing method and apparatus

There are four main methods: sulfide flotation, anionic collector direct flotation, chelating agents - neutral oil flotation, leaching - flotation. Sulphide flotation is one of the more important ways. Because lead, zinc sulfide ore deposits, sulphide and oxide ore mixed oxide ore often exist simultaneously, so a single flotation process was divided after the first lead, zinc sulfide ore after the election before the election oxide ore flotation segments, the first float After the difficult easy to float float float ore mine and other processes.

Oxidized zinc ore using the device include: crusher, ball mill, classifier, flotation machine, mixing bucket, concentrated, high frequency screen, and so on.

2, the oxidation of lead-zinc flotation reagent

Lead and zinc oxide with agents including curing agent, oil-soluble salts, inhibitors, activators.

3, ore pretreatment - Desliming ore

Carried off the mud before the first flotation treatment is to reduce the degree of sludge to choose another influence, often graded mud off method is more commonly used method, the amount of mud off not too large, lower recoveries over the General Assembly.

Third, oxidized lead-zinc ore processing problems that need attention

1, the grinding process

Flotation, lead, zinc oxide and mixed ore mine are very dependent on the ball mill grinding process, grinding work requirement is not to get a higher degree of minerals monomer dissociation, but also to avoid the mud of the phenomenon.

2, inflatable amount

Flotation process also affected the amount of inflatable flotation machine. Lead-zinc sulfide oxidation deterioration hydrophobicity, hydrophobicity is less than the ratio of sulfide minerals, which reduces the chance of adhesion of the bubble. Once inflated volume increased slightly, the number of bubbles per unit volume of pulp will increase, so the opportunity to contact with the mineral particles increased bubble, bubble collector capacity enhancement minerals, mineral recovery will eventually improve. The degree of difficulty can occur when too much bubble inflated merger phenomenon, making the selection of improving the quality of concentrate will therefore be reduced.

Lead-zinc oxide sorting has been a major problem of beneficiation industry, in order to get a better beneficiation indicators, it is necessary to improve the level of production ball mill, flotation machines and other core equipment, one improved crushing, grinding, beneficiation process.