With a view to increase the resource utilization rate and reduce pollution, this article is written to comprehensive analysis the non-ferrous metal sulfide ore dressing technology progress that from flotation electrochemical technology, bioleaching technology, grinding and floating
technology, and mineral processing pharmacy technology, and provide guild help to relevant personnel.
At present, the mineral processing technology of non-ferrous metal sulfide ore mainly is flotation electrochemical technology, bioleaching technology, grinding and floating technology, the bioleaching technology of which used most widely. The good application of bioleaching process can extract mineral resource scientific, quality, and low cost.
1 Flotation electrochemical technology
The oxide is attached to the surface of sulfide ore, and the oxidation degree of the oxide directly influence the final flotation effect.
Currently, the technology that based on the oxidation-reduction reaction of sulfide ore, be widely adopted in the mineral processing plants. Take a copper-zinc ore mine as the example, they attach high importance to the hydrophobicity of mineral ore, develop the chemical reaction process and established a complete production model that has achieved good efficient.
According to the application and development situation of non-ferrous metal sulfide ore beneficiation technology in China, we know that researchers think highly of the flotation process which without a collector. Buy Flotation Machines
In China, the common biometallurgical process needs to incorporate leaching technology, which has higher requirements for leaching process and is divided into two different leaching process types according to the leaching working method, one is direct bioleaching, another is indirect metabolize leaching. For instance, under acidic conditions, the thiobacillus ferrooxidant and mesophilic bacteria, they have good chemical separate performance, immerse into the sulfide ore, then dissolve the metal components and ionic structures, final separate the metal component from the sulfide ore.
Due to the difficulty and complication of the non-ferrous metal sulfide ore dressing technology, the key research point is how to extract all the valuable metals in the sulfide ore as far as possible. The regular hydrometallurgical process is not easy to operate and with low efficiency. Nowadays, the above-mentioned bacterial oxidation process is welcome adopted by its higher leaching rate and fewer energy consumption.
bioleaching technology enables the rapid leaching of valuable metals and associated metals in the sulfide ore, which truly achieves the goal of concentrate beneficiation. However, it is inevitable that has some defects like beneficiation rate influenced by reaction time, temperature easily. Gold leaching process for your reference
3 Grinding-flotation process
Among the non-ferrous metal sulfide ore dressing technologies, the ground – floating technology has the longest application time. Its working principle is: through continuous flotation, grinding, and classification processes to separate the metals from sulfide ore more accurately.
In order to improve the effect of grinding flotation process, researchers are pay attention to the grinding machine performance, flotation standard.
4 Mineral process chemical agent
beneficiation reagent plays an important role in the mineral processing plant, the beneficiation effect varies with the performance of beneficiation reagents. The most used reagents are capture agent and inhibitor, in which, the capture agent accounts for the beneficiation effect in a big part, it mainly divides into xanthate type, mercaptan type, sulfur-nitrogen type, and sulfur ammonia type. according to the process technology, the used reagent shall be changed as followed.
the main purpose of non-ferrous metal beneficiation is to separate useful minerals and gangue minerals, and directly remove harmful substances from mineral resources, thereby providing more high-quality mineral energy for the industrial sector.