43results about How to "Reduce mutual inclusion" patented technology

The invention relates to a beneficiation process for polymetallic sulfide ores containing secondary copper, belonging to the technical field of mineral processing. The method of the present invention is as follows: take iron powder with a particle size of 10-150 μm and prepare a 1%-10% suspension; add iron powder to the mill or stirring tank according to 0.1%-1% of the ore solid mass in the pulp Suspension, followed by the conventional flotation method to obtain the final concentrate product; the iron powder added to the mill and the mineral particles form a primary battery, so that the free copper ions in the slurry are replaced, reducing the impact of free copper ions on sphalerite The activation of pyrite and pyrite makes the difference in buoyancy between minerals larger, and the intercontainment phenomenon of concentrate products is small, thereby improving the index of mineral processing products. The method of the invention has the advantages of good flotation index, saving chemicals, simplifying the ore dressing process and the like.

The invention provides a method for preparing a lithium iron phosphate positive electrode material by recycling a waste lithium iron phosphate battery. The method comprises the steps of (1) immersingthe waste lithium iron phosphate battery in salt water and disassembling the battery after full discharge to obtain positive and negative pole pieces, (2) sorting and selecting an active substance, acopper foil and an aluminum foil after the positive and negative pole pieces are crushed, frozen, immersed in boiling water and sieved by vibration, (3) performing vacuum baking on the sorted active substance, (4) performing acid leaching on the active substance which is subjected to vacuum baking to obtain a solution containing Li, Fe, P and insoluble slag, (5) removing residual copper impuritiesand aluminum impurities in a leaching solution by modes of copper removal with vulcanization and aluminum removal with aluminum phosphate deposition, (6) adding a lithium source and a phosphorus source to the leaching solution to perform hydrothermal reaction to obtain a regenerated lithium iron phosphate material, and (7) mixing with a carbon source and performing high-temperature baking treatment to obtain a carbon-coated lithium iron phosphate positive electrode material. The process of the invention is short, the obtained regenerated lithium iron phosphate positive electrode material hasexcellent electrochemical performance, and valuable elements in the waste lithium iron phosphate battery are effectively utilized.

The invention relates to a targeted dosing method in the process of sulfide ore flotation polymetallic separation, which belongs to the method of adding inhibitors in the process of sulfide ore flotation polymetallic separation. The selected foam enters the vertical spiral agitating mill for scrubbing and grinding, and the inhibitor adding pipeline is surrounded by multiple clean water flushing water pipelines, and the pipelines are combined with water outlets and chemical outlets, and go down to the pulp of the vertical spiral agitating mill Below the surface and above the steel ball interface; the pipeline group is connected to the clean water flushing water and the inhibitor is fed into the vertical spiral stirring mill at the same time to ensure the pressure of the clean water. The advantages are: the effect of the inhibitor is enhanced, and the dosage of the inhibitor is reduced, which not only saves the production cost, but also reduces the amount of residual inhibitor in the backwater, makes the return of the backwater more flexible, and eliminates the impact on the front-end mixing flotation.

The invention relates to a beneficiation method, in particular to a beneficiation method for separating the polymetallic sulphide ore containing copper, lead, zinc and tin. The method comprises the following steps: (1) carrying out ore grinding on the raw ore before carrying out bulk flotation on copper, lead and sulphur, using diethyl mixed with xanthate as collecting agent of copper and lead mineral, using zinc sulphate and sodium sulfite as inhibitor of zinc mineral; (2) carrying out phase-2 ore grinding and selection; (3) separating copper, lead and sulphur, using sodium sulfite and sodium thiosulfate as the inhibitor of the lead and sulphur mineral, using Z-200 as collecting agent for separation and scavenging and then carrying out lead flotation after the separation and scavenging; (4) carrying out zin flotation on the bulk flotation tailings; and (5) finally, carrying out reselection on the zinc flotation tailings to recover tin. The metalliferous mineral of the invention has the advantages of good separating effect, high metal recovery rate, more complete comprehensive recovery of useful minerals, low cost of medicament, simple method, easy operation and energy conservation.

The invention discloses a method for separating low-sulfur type copper-lead-zinc polymetallic ores by sequential preferential flotation. The technical scheme is carried out in the order of first flotation of copper and then flotation of lead. In the copper priority flotation operation, the combined inhibitor T‑9 is used to realize the combination of valuable elements copper, lead, and Effective separation of zinc; in the lead priority flotation operation, the inhibitor F‑8 is used to effectively inhibit the flotation of zinc minerals. T-9 reduces the planktonic activity of lead and zinc minerals, effectively increases the difference in floatability between copper and lead and zinc minerals, and its components are non-toxic, harmless, green and non-polluting; inhibitor F-8 has a strong effect on sphalerite Good inhibitory effect, while galena and silver minerals have high activity, and galena has a certain collection effect, which is beneficial to reduce the mutual content of lead and zinc in the product. After the method is adopted, the target minerals copper, lead and zinc are effectively separated, and the purpose of comprehensive recovery and utilization of mineral resources is achieved.