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 discloses a method for eliminating copper ions in secondary copper sulphide multi-metal ore pulp solutions and belongs to the technical field of mineral processing. The method is characterized in that the beneficiation process of the method sequentially comprises the steps that raw ore is ground till monomer separation is conducted, and the ground raw ore is fed into a stirring groove; copper powder is added into the stirring groove, added with hydrochloric acid, heated and stirred; and pulp conditioning and dosing are conducted, common floatation is carried out, and concentrate products are obtained. According to the method for eliminating the copper ions in the secondary copper sulphide multi-metal ore pulp solutions, the hydrochloric acid and the copper powder react with Cu2+; a coordination compound [CuCl2]-, capable of stably staying in a water solution, of Cu(I) can be generated; and the Cu2+ is removed before floatation operation is conducted, sphalerites, pyrites, magnetic pyrites and other sulfide minerals are prevented from being activated through the ion Cu2+, and good beneficiation indexes can be acquired through the common floatation process. The method for eliminating the copper ions in the secondary copper sulphide multi-metal ore pulp solutions has the advantages of being good in beneficiation index, capable of saving medicaments and the like.

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 flotation separation technology for metal sulfide ores, in particular to a depressant-free flotation separation method for refractory high-sulfur copper-zinc sulfide ores. The described flotation separation method comprises the following steps: (1) under a suitable grinding fineness, lime is used to adjust the pulp potential, so that the pulp potential is controlled at -250 to -100mV, adding copper sulfide such as thiourethane and xanthate (2) Add copper sulfate to activate sphalerite in copper tailings, control the pulp potential -220~-70mV, and use xanthate and 2# oil for zinc selection , and finally obtain copper concentrate and zinc concentrate. Compared with the prior art, the present invention changes the buoyancy of copper and zinc minerals by adjusting the slurry potential, thereby realizing the depressant-free copper-zinc flotation separation. The technological process is simple and easy to control; at the same time, it can save the cost of the medicine, which can reduce the cost of the medicine by 5-10% compared with the traditional process.

The invention discloses a recovery method for carbon-contained copper and lead ore difficult to separate. The recovery method includes the following steps that step1, according to smashing and grinding, the raw ore is smashed and ground to be at the size fraction of -0.074 mm by 70-80%; step2, bulk concentrate is obtained through bulk flotation; step3, reagent removal solution is prepared; step4, reagent removal is performed; step5, slurry mixing is performed; step6, shaking table reselection is performed; step7, according to purification, bulk concentrate of lead and magnetite and bulk concentrate of copper and magnetite are placed into a magnetic separator to be separated so as to obtain lead concentrate and copper concentrate, the magnetite can be repeatedly utilized, and bulk concentrate of copper and carbon is placed in a shaking table to be separated to obtain copper concentrate and carbon concentrate. The recovery method has the advantages that a gravity and magnetic levitation combination method is adopted for recovering lead and copper, inhibitor is not needed, environmental pollution is small, economic benefits are high, the lead concentrate and the copper concentrate are high in quality, mutual inclusion is low, and the technology process is simple; the recovery method has great economic benefits and social benefits.

The invention relates to a complex copper-lead ore beneficiation separation method adopting a middling returning and regrinding technology, comprising the following steps of: carrying out ore grinding on raw ores, and then carrying out copper roughing; carrying out copper choiceness by adopting flotation on rough concentrates obtained through the copper roughing; and carrying out copper scavenging on tailings obtained through the copper roughing. The complex copper-lead ore beneficiation separation method is characterized in that in the copper-lead separation process of the copper choiceness,middling chosen in a first copper choiceness process is returned to a first copper scavenging process, and the middling chosen in a second copper choiceness process and the middling chosen in a thirdcopper choiceness process are intensively returned to the copper roughing process, therefore, the influence of impurities on grades is prevented, and the purpose of enhancing the grades of the copperconcentrates is achieved; in the copper scavenging process, concentrates subjected to primary choiceness are reground, and ore charges are conveyed to the copper choiceness process to form selective milling after regrinding, thereby not only enhancing the dissociation degree of copper-lead ores but also preventing overgrinding, and enabling the copper concentrates to obtain higher recovery rate.

The invention discloses a copper-molybdenum mixed concentrate flotation separation agent system and its application; the copper-molybdenum mixed concentrate flotation separation agent system includes a copper mineral inhibitor and a molybdenum mineral collector in the copper-molybdenum flotation separation process and foaming agents. Wherein, the copper mineral inhibitor includes by weight: 3-7 parts of sodium hydroxide, 3-6 parts of hydrogen peroxide, 15-25 parts of sodium thioglycolate, 2 parts of pentasodium diethylenetriaminepentaacetate -5 parts, an appropriate amount of water; the molybdenum mineral collector includes by weight parts: 20-30 parts of kerosene, 5-10 parts of tert-dodecylmercaptan; the foaming agent is 2-hexanol. The inhibitor and collector of the invention have strong selective adsorption capacity, excellent synergistic performance, strong foaming agent group activity, brittle and dense foam formed, and good mineralization effect. The copper-molybdenum flotation separation agent system of the present invention can greatly improve the difference in floatability between molybdenum minerals and copper minerals in complex and difficult-to-separate copper-molybdenum mixed concentrates, effectively reduce the mutual inclusion of copper and molybdenum, and the separation index is excellent. It is harmless and has little impact on the environment.

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.