How to improve the beneficiation efficiency of refractory lead-zinc ore quickly?

Among the types of refractory ores, the existing lead-zinc ores are especially prominent, and the most representative ones are low-grade sulfide ores or oxidized mixed ores. The main manifestations are:

Firstly, the ore belongs to the conglomerate type, the crushing operation link in the conventional process is difficult to ensure the crushing efficiency of the ore, and the unique particle size of the ore is easy to change, which makes it difficult to realize the filling of the ore.

Second, the ore has a low grade, although the quality of the coarse foam is better, but the lead mineral is easy to fall off in the selection stage, resulting in a poor recovery of lead concentrate;

Third, the commonly used bukina xanthate, pinol oil and other agents are not only difficult to play a role, and the amount is quite large, resulting in the separation of minerals and gangue is not only difficult, but also a large waste of pharmaceutical resources, and the cost is too heavy.

Is there a better way to do this?

The answer is yes! This needs to be optimized from various aspects such as process flow, operation, pharmaceutical system, etc., simply put, it is the right medicine:

1, optimize the crushing operation, starting from the operation equipment, provide a larger crusher discharge port and screen aperture equipment for crushing operation, and optimize the grinding system, the use of "reduce the size of the medium - improve the grinding area - improve the grinding and stripping effect" grinding system, can improve the grinding effect;

2. Optimize the process design, adopt a stage of closed-circuit grinding, prioritize the flotation of lead and zinc minerals in turn, rough grinding and roughing - classification and re-grinding of coarse zinc concentrate design process, can improve the flotation index of zinc concentrate to a certain extent, and the economic benefits are naturally significant;

3, Optimize the chemical system, the use of LF-AQ type lead oxide complex special collector, lead zinc ore has a strong collection and good selectivity, can increase the average 3-10 metal recovery.

The special collector for LF-AQ type lead oxide complex is the homolog of isomeric mixed branch chain succinxanthate synthesized by the reaction of many surfactants. It is red liquid, slightly yellow medicinal taste; The effective activity is 85%~90%, PH is 7.5-8.5, easily soluble in water, non-toxic, non-corrosive, the dosage is 1/2-1/3 (80g-200g) of xanthate; Combined with 35Q type agents (30g-100g), the effect is better, and other xanthics can not be used at the same time. When used after vulcanization, water must be supplied with 10% or 50% concentration and added in stages.