A Flotation Technology for Improving Copper-iron Ore Recovery

Abstract

The invention relates to the technical field of mineral processing, in particular to a technology for improving copper and iron ore recycling flotation. Firstly, a crusher is used for conducting crushing treatment on copper and iron ore, a screening machine is used for screening crushed copper and iron ore with the average granularity smaller than 12 mm, then, the manner of combination of gravityclassification of a whirlcone and the forced granularity classification of a high-frequency vibration sieve is adopted for conducting coarse separation and secondary fine classification on the copperand iron ore obtained after ball milling, finally, the technology steps of copper sulfur mixed flotation, copper sulfur separation and iron magnetic separation are adopted for conducting separation treatment on flotation pulp, and copper concentrates with the copper grade larger than 18% and iron concentrates with the iron grade larger than 62% are finally obtained. By means of the technology method, the phenomena that valuable mineral is prone to insufficient grinding and gangue mineral is prone to excessive grinding during copper and iron ore ball milling can be avoided, influences on the flotation recycling rate through gangue mineral fine silt are reduced, the recycling efficiency of target mineral is effectively improved, and economic benefits and social benefits are win-win.

Description

technical field

[0001] The invention relates to the technical field of mineral processing, in particular to a flotation technology for improving the recovery of delafospheric ore. Background technique

[0002] Both copper and iron play a pivotal role in the national economy, and non-ferrous metal minerals containing both copper and iron are one of the main sources of these two metals. The mineral composition of copper-iron ore is complex, mainly produced in copper-bearing pyrite deposits, and a few in skarn copper deposits. Among them, the main metal minerals of copper-bearing pyrite deposits include chalcopyrite, magnetite, pyrite, pyrrhotite, marcasite, copper blue, chalcocite, and carbonates such as chlorite and dolomite. Salt minerals; the main metal minerals of skarn deposits include gangue minerals such as diopside, garnet, and serpentine. Therefore, copper-iron deposits often contain a large amount of pyrite. The characteristics of copper-iron ore are as follows: t...

Examples

Embodiment 1

[0029] Taking copper-iron ore from a concentrator in Jiangxi as an example, the mineral symbiosis relationship of this copper-iron ore is complex, and the mineral hardness varies greatly. The raw ore grade is: copper 0.623%, sulfur 10.53%, and magnetic iron 12.44%. Adopt processing method of the present invention to reclaim copper, sulfur, iron ore concentrate wherein, concrete recovery method comprises the following steps:

[0030] S1. crush copper-iron ore with a crusher, and screen the broken copper-iron ore with an average particle size of 11.3mm by a screening machine;

[0031] S2. the broken copper-iron ore in the S1 step is transported in the ball mill (model is MQG3660) with the conveying speed of 100t / h with the belt conveyor, and is 17r / min at the rotating speed, and the sand-returning ratio is 250% under the parameter condition These ore slurries are ground, and a certain amount of water is added during ball milling, so that the mass concentration of the ground ore ...

Embodiment 2

[0040]Taking copper-iron ore from a concentrator in Jiangxi as an example, the mineral symbiosis relationship of this copper-iron ore is complex, and the mineral hardness varies greatly. The raw ore grade is: copper 0.623%, sulfur 10.53%, and magnetic iron 12.44%. Adopt processing method of the present invention to reclaim copper, sulfur, iron ore concentrate wherein, concrete recovery method comprises the following steps:

[0041] S1. crush the copper-iron ore with a crusher, and screen the broken copper-iron ore with an average particle size of 11.5mm by a screening machine;

[0042] S2. Transport the crushed copper-iron ore in the step S1 to the ball mill (model MQG3660) at a conveying speed of 100t / h with a belt conveyor, and under the parameter conditions that the rotating speed is 18.5r / min and the sand return ratio is 260%. Grinding these ore slurries, adding a certain amount of water during ball milling, so that the mass concentration of the ground ore after grinding i...

Embodiment 3

[0051] Taking copper-iron ore from a concentrator in Jiangxi as an example, the mineral symbiosis relationship of this copper-iron ore is complex, and the mineral hardness varies greatly. The raw ore grade is: copper 0.623%, sulfur 10.53%, and magnetic iron 12.44%. Adopt processing method of the present invention to reclaim copper, sulfur, iron ore concentrate wherein, concrete recovery method comprises the following steps:

[0052] S1. crush the copper-iron ore with a crusher, and screen the broken copper-iron ore with an average particle size of 11.8mm by a screening machine;

[0053] S2. Transport the crushed copper-iron ore in the S1 step to the ball mill (model MQG3660) at a conveying speed of 100t / h by a belt conveyor, and under the parameter conditions that the rotating speed is 19.2r / min and the sand return ratio is 280%. Grinding these ore slurries, adding a certain amount of water during ball milling, so that the mass concentration of the ground ore after grinding is...

technical field

[0001] The invention relates to the technical field of mineral processing, in particular to a flotation technology for improving the recovery of delafospheric ore. Background technique

[0002] Both copper and iron play a pivotal role in the national economy, and non-ferrous metal minerals containing both copper and iron are one of the main sources of these two metals. The mineral composition of copper-iron ore is complex, mainly produced in copper-bearing pyrite deposits, and a few in skarn copper deposits. Among them, the main metal minerals of copper-bearing pyrite deposits include chalcopyrite, magnetite, pyrite, pyrrhotite, marcasite, copper blue, chalcocite, and carbonates such as chlorite and dolomite. Salt minerals; the main metal minerals of skarn deposits include gangue minerals such as diopside, garnet, and serpentine. Therefore, copper-iron deposits often contain a large amount of pyrite. The characteristics of copper-iron ore are as follows: t...

Examples

Embodiment 1

[0029] Taking copper-iron ore from a concentrator in Jiangxi as an example, the mineral symbiosis relationship of this copper-iron ore is complex, and the mineral hardness varies greatly. The raw ore grade is: copper 0.623%, sulfur 10.53%, and magnetic iron 12.44%. Adopt processing method of the present invention to reclaim copper, sulfur, iron ore concentrate wherein, concrete recovery method comprises the following steps:

[0030] S1. crush copper-iron ore with a crusher, and screen the broken copper-iron ore with an average particle size of 11.3mm by a screening machine;

[0031] S2. the broken copper-iron ore in the S1 step is transported in the ball mill (model is MQG3660) with the conveying speed of 100t / h with the belt conveyor, and is 17r / min at the rotating speed, and the sand-returning ratio is 250% under the parameter condition These ore slurries are ground, and a certain amount of water is added during ball milling, so that the mass concentration of the ground ore ...

Embodiment 2

[0040]Taking copper-iron ore from a concentrator in Jiangxi as an example, the mineral symbiosis relationship of this copper-iron ore is complex, and the mineral hardness varies greatly. The raw ore grade is: copper 0.623%, sulfur 10.53%, and magnetic iron 12.44%. Adopt processing method of the present invention to reclaim copper, sulfur, iron ore concentrate wherein, concrete recovery method comprises the following steps:

[0041] S1. crush the copper-iron ore with a crusher, and screen the broken copper-iron ore with an average particle size of 11.5mm by a screening machine;

[0042] S2. Transport the crushed copper-iron ore in the step S1 to the ball mill (model MQG3660) at a conveying speed of 100t / h with a belt conveyor, and under the parameter conditions that the rotating speed is 18.5r / min and the sand return ratio is 260%. Grinding these ore slurries, adding a certain amount of water during ball milling, so that the mass concentration of the ground ore after grinding i...

Embodiment 3

[0051] Taking copper-iron ore from a concentrator in Jiangxi as an example, the mineral symbiosis relationship of this copper-iron ore is complex, and the mineral hardness varies greatly. The raw ore grade is: copper 0.623%, sulfur 10.53%, and magnetic iron 12.44%. Adopt processing method of the present invention to reclaim copper, sulfur, iron ore concentrate wherein, concrete recovery method comprises the following steps:

[0052] S1. crush the copper-iron ore with a crusher, and screen the broken copper-iron ore with an average particle size of 11.8mm by a screening machine;

[0053] S2. Transport the crushed copper-iron ore in the S1 step to the ball mill (model MQG3660) at a conveying speed of 100t / h by a belt conveyor, and under the parameter conditions that the rotating speed is 19.2r / min and the sand return ratio is 280%. Grinding these ore slurries, adding a certain amount of water during ball milling, so that the mass concentration of the ground ore after grinding is...