Lead-zinc ores dressing machine
According to the technologic property, SBM Machinery series lead-zinc ore dressing process flows can be classified like this: flotation flow, gravity concentration-flotation combination process and flotation-smelting combination process. For the single flotation, there are also many methods: differential flotation that lead is first then the zinc, the segmentation flotation that the sulphide ore then the oxidized ore, the flotation that the easily floated ore is first and then the hard floated ore.
Lead-zinc ores dressing equipments usually use the flotation method. At present, the lead-zinc ores dressing equipments consist of crusher, ball mill, flotation machine, classifier, dryer, and conveyor, etc. There are also the mechanical agitation type self-Mechanical agitation type since inspiration or inflatable flotation machine or inflatable flotation machine.
SBM Machinery is professional mineral processing equipment manufacturer. Our mining equipments are absolutely leading position in mine machinery industry. We can design the suitable lead-zinc mine ore dressing production line for you and can provide full set of lead-zinc ore dressing processing equipments.
Lead-zinc ore dressing processing technology
According to different ore types, the dressing experiment of lead-zinc ore will choose different dressing method. For sulfide ore, flotation can be used. For oxidized ore, there are many different methods, such as:
1.flotation,
2.combined beneficiation method that contains gravity concentration and flotation,
3.flotation after roasting and vulcanizing,
4.gravity concentration at first then using vitriol treatment then flotation.
For the lead-zinc ore that has much metal, combined beneficiation methods can be used, such as magnetic separation-flotation, gravity concentration flotation, gravity concentration-magnetic separation flotation.
The ore grains of lead-zinc ores have hydrophobic property and this property is formed by the grains surfaces, or by flotation reagents chemical and physical function. For the hydrophobic property, the grains will gather on liquid-gas or water-oil interface and this is core principle of flotation process.
The lead-zinc ores come through crushing and grinding and are dissociated into monomer particles, which meet the Relations with lead-zinc mine technological requirements. Then the corresponding lead-zinc mine flotation reagents are added into the ore pulp and the mixtures are mixed until the flotation reagents can fully react with the ore grains. The flotation reagents can expand the flotability difference between different mineral grains. The prepared ore pulp is sent into flotation cell. Then through mixing and air inflation, the ore grains in ore pulp contact with and crash the air bubbles. The ore grains with well flotability will selectively cling to the bubbles and then go up to the mineralization foam layer which is formed by gas and liquid and solid. Then through mechanical blowing or spill from the pulp surface, dehydration and drying, the lead concentrates and zinc concentrates can be got. The mineral grains with bad flotability, such as gangue, will be discharged as tailings from the flotation tank bottom. This is the positive flotation that is said by lead-zinc deposit concentration equipment experts. If lead-zinc mineral processing technology floats the useless mineral grains out and keeps the useful mineral grains in the ore pulp, this is reverse flotation.
Lead-zinc ore brief introduction
Lead-zinc ore, is the ore whose content of metallic element lead and zinc is quite high. Lead and zinc is widely used in many areas, such as electrical industry, machinery industry, military industry, metallurgy industry, chemical industry, light industry and medicine. What’s more, the lead has great purposes in the nuclear industry, metal oil industry and other departments.