Mineral processing activator of sphalerite and sphalerite and method for zinc reduction by flotation of iron concentrate
A sphalerite and sphalerite technology, applied in flotation, solid separation and other directions, can solve the problems of difficulty in achieving deep zinc reduction of iron concentrate, insignificant activation effect, and unsuitability for iron concentrate, etc. The effect of buoyancy, outstanding ability, and simple steps
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Embodiment 1
[0033] A zinc-bearing iron ore, the zinc content in the weak magnetic separation iron concentrate is 0.048%, of which the zinc content in the sphalerite is 0.022%, the zinc content in the sphalerite is 0.021%, and the zinc-iron spinel content is 0.021%. The zinc content is 0.005%, and the zinc content exceeds the user's quality requirement of 0.02%.
[0034] Use the sphalerite and sphalerite beneficiation activator of the present invention and the method for flotation zinc reduction of iron concentrate to carry out dezincification treatment, specifically comprising the following steps:
[0035](1) Add L-aspartic acid solution (i.e. L-aspartic acid in the effective amount of 6kg / t) to the weak magnetic iron concentrate with ore feeding concentration of 34% and ore feeding particle size of -0.045mm accounting for 80% The amount of acid added is 6kg / t), stirred for 3min, and the pH value of the pulp is adjusted to 4.5; the L-aspartic acid solution is prepared by adding sulfuric a...
Embodiment 2
[0044] A certain zinc-bearing iron ore, the zinc content in the weak magnetic separation iron concentrate is 0.063%, of which the zinc content in the sphalerite is 0.031%, the zinc content in the sphalerite is 0.024%, and the zinc content in the zinc-iron spinel is 0.024%. The zinc content is 0.008%, and the zinc content exceeds the user's quality requirement of 0.02%.
[0045] Adopt the sphalerite and sphalerite beneficiation activator of the present invention and the method for flotation zinc reduction of iron concentrate to carry out dezincification treatment, specifically comprising the following steps:
[0046] (1) Add glutamic acid hydrochloride solution (i.e. glutamic acid hydrochloric acid) according to the effective amount of 4 kg / t in the weak magnetic separation iron concentrate with ore feeding concentration of 40% and ore feeding particle size of -0.045mm accounting for 70%. The amount of salt added is 4kg / t), stirred for 3min, and the pH value of the ore pulp was...
Embodiment 3
[0054] A zinc-bearing iron ore, the zinc content in the weak magnetic separation iron concentrate is 0.075%, the zinc content in the sphalerite is 0.038%, the zinc content in the sphalerite is 0.031%, and the zinc content in the zinc oxide is 0.031%. It is 0.006%, and the zinc content exceeds the user's quality requirement of 0.02%.
[0055] Use the sphalerite and sphalerite beneficiation activator of the present invention and the method for flotation zinc reduction of iron concentrate to carry out dezincification treatment, the specific method is the same as that of Example 2, the difference is: A glutamic acid solution is added to the iron concentrate, the glutamic acid solution is a solution prepared by adding sulfuric acid (sulfuric acid mass fraction is 30%) to glutamic acid, and the mass fraction of glutamic acid in the solution is 10%.
[0056] The flotation comparison test results of the glutamic acid activator in this embodiment and the copper sulfate+ammonium chlorid...
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