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

The invention relates to a new technology for lead zinc sulfide ore floatation. Lead sulfide mineral is preferably carried out with mixed floatation in a neutral or weak alkali medium, then zinc floating and lead sulfur separation are carried out in a high alkali medium. The lead sulfide mineral is firstly floated to enter product, before zinc floating, lead sulfide mixed product is obtained, only pure zinc mineral enters slurry in a zinc floating work zone, thus being beneficial to zinc floatation and avoiding the operation method of heavy pulling and heavy stress; and lead tailing has no sulfur mineral, thus reducing useless poor circulation formed in zinc floating of the sulfur mineral, saving the beneficiation reagent and improving the sorting standard.

The invention relates to a flotation method for lead and zinc ore difficult to select. The method includes the following steps of lead roughing, two-time lead scavenging, three-time lead fine selection, zinc roughing, two-time zinc scavenging and three-time fine selection. Lime serves as regulators, zinc sulfate and sodium sulfite serve as zinc inhibitor, diethyl dithiocarbamate and ethyl xanthogenate serve as lead collecting agents, copper sulfate serves as zinc activating agents, ammonium dibutyl dithiophosphate serves as zinc collecting agents, and terpenic oil serves as foaming agents. The lead and zinc ore difficult to select is processed by the adoption of lead differential flotation and zinc selection technological processes, and the practical problems that in original technological processes, zinc contains a high content of lead which contains a high content of the zinc, and the lead recovery rate and the zinc recover rate are low are solved. The technological processes are simple, reliable, easy to operate, and good in sorting index. Compared with the original technological processes, the method has the advantages that under the circumstance that raw ore contains the same lead and zinc, mutual containing of the lead and zinc is reduced, and the lead recovery rate and the zinc recovery rate are greatly increased and increased by 9.29% and 9.05% respectively.

The invention relates to a mineral processing process for multi-metal sulfide minerals containing secondary copper, and belongs to the technical field of mineral processing. According to the method of the mineral processing process for multi-metal sulfide minerals containing the secondary copper, iron powder with the particle size of 1 mm to 150 mm is selected for preparing suspension liquid with the concentration of 1 percent to 10 percent; iron powder with the amount of 0.1 to 1 percent of the mass of solid ore in the ore pulp is added to a mill or an agitator tank, and subsequently conventional flotation method is carried out to obtain final concentrate products; the iron power added into the mill and ore particles form primary batteries, dissociative copper ions in the ore pulp are replaced, excitation of the dissociative copper ions on blende and pyrite is reduced, the floatability difference among the minerals is enlarged, the phenomenon that concentrate products containing one another is reduced, and therefore the index of mineral separation products is improved. The method has the advantages of being good in flotation index, saving chemical, and simplifying mineral processing flow.

The invention relates to a beneficiation method for a veinlet disseminated ore body type copper-lead-zinc-sulfur complex polymetallic ore. The technical scheme adopted is that based on the feature of the veinlet disseminated ore body type copper-lead-zinc-sulfur complex polymetallic ore, a process of total sulfur fixed floating- partial copper-lead mixed floating separation-selective zinc-sulfur flotation is adopted, in combination with a way of concentration and fine grinding, for depth reagent removal, According to the method, the reagent removal is complete, the influence of ore mud on flotation is effectively eliminated, the copper, lead, zinc and sulfur can be divorced and recycle to the maximum extent, and accordingly, the content of other metallic elements in the concentration of the last one metallic element is obviously reduced.

The invention discloses a method for recycling copper aluminum and rubber in a waste power lithium battery. The method is characterized by comprising the following steps of 1) disassembly: disassembling a waste power battery pack to obtain a battery unit; 2) crushing and granulation: conducting one-stage crushing and two-stage granulation through an ultra-fine grinding granulator on the battery unit to obtain a product A; 3) screening: screening the product A through a screening device to obtain 100-160-mesh anode and cathode powder under the screening device and a 100-160-mesh product B on the screening device; 4) magnetite induced gravity separation: conducting the magnetite induced gravity separation on the product B first to obtain pure rubber particles and a copper-aluminum mixture and conducting the second magnetite induced gravity separation on the copper-aluminum mixture to obtain pure copper particles and aluminum particles. The ultra-fine high-purity magnetite induced gravityseparation technology is adopted to better recycle the copper-aluminum and the rubber in the waste power lithium battery, and the obtained copper and aluminum and the rubber have low mutual content.

The invention discloses a porphyry copper molybdenum ore copper molybdenum flotation process. The porphyry copper molybdenum ore copper molybdenum flotation process is characterized by comprising the following steps: under the fineness of -0.074 mm content of 60-70%, the mass percentage concentration of pulp is within 25-40%; lime is added to adjust the pulp system pH in a low-alkalinity range of 7-8.5; a molybdenum mineral capturing agent being 0.005-0.012% of the solid mass in the pulp is added; the flotation is performed for molybdenum ore and one part of copper ore to obtain a copper molybdenum mixed concentrate for separation; flotation tailing is added with a copper mineral capturing agent being 0.004-0.010% of the solid mass in the pulp; and the flotation is performed for the remained copper ore to obtain a copper concentrate. The natural flotability of the molybdenum mineral is fully exerted through low-alkalinity condition; the recovery of the molybdenum mineral is facilitated; the molybdenum ore capturing agent with good selectivity is added to reduce the flotation rate of the copper mineral; the separation of the mixed concentrate is facilitated; the inhibitor use level in the copper mineral in the separation process is reduced; the mutual contents of the copper and molybdenum minerals in copper and molybdenum concentrate products are effectively reduced; and the copper mineral capturing agent with good capturing performance is added in copper flotation to guarantee the recovery rate of the copper mineral.

The invention discloses a beneficiation method for efficiently recovering copper and molybdenum associated with gold and rhenium from porphyry type copper-molybdenum deposit and belongs to the technical field of mineral processing. The method comprises the following steps: roughly grinding raw ore under the condition of low alkalinity, and carrying out primary mixed flotation roughing, secondary mixed flotation scavenging and tailing discarding to obtain mixed flotation roughing concentrate; finely grinding the mixed flotation roughing concentrate and then carrying out secondary mixed flotation concentrating, primary molybdenum roughing and secondary molybdenum scavenging to obtain copper concentrate with 30 percent or above of copper and molybdenum roughing concentrate; regrinding and sieving the molybdenum roughing concentrate to obtain first molybdenum concentrate; and carrying out molybdenum concentrating for five times on sieved tailings, and alternatively using an inhibitor and partially combining and returning ore in molybdenum to obtain second molybdenum concentrate, wherein the content of molybdenum in comprehensive molybdenum concentrate is 50 percent or above. The beneficiation method disclosed by the invention adopts a technical solution of rough grinding mixed flotation of raw ore, fine grinding recleaning of mixed flotation rough concentrate, regrinding and sieving graded ore grinding sorting of molybdenum concentrate and has the characteristics of simple reagent system, convenient operation and management, good separating effect, stable indexes, good reproducibility and the like.

The invention discloses a flotation separation agent system for copper-molybdenum mixed concentrates and application of the flotation separation agent system. The flotation separation agent system forthe copper-molybdenum mixed concentrates comprises a copper mineral inhibitor, a molybdenum mineral collector and a foaming agent in a copper-molybdenum flotation separation process. The copper mineral inhibitor comprises the following components in parts by weight: 3-7 parts of sodium hydroxide, 3-6 parts of hydrogen peroxide, 15-25 parts of sodium thioglycolate, 2-5 parts of pentasodium diethylenetriaminepentaacetate and a proper amount of water; the molybdenum mineral collector comprises the following components in parts by weight: 20-30 parts of kerosene and 5-10 parts of tert-dodecyl mercaptan; and the foaming agent is 2-hexanol. The inhibitor and the collector are high in selective adsorption capacity, the synergy performance is excellent, the activity of groups of the foaming agentis high, formed foams are crisp and compact, and the mineralization effect is good. According to the flotation separation agent system for copper and molybdenum, the floatability difference between molybdenum minerals and copper minerals in the complex copper and molybdenum mixed concentrates difficult to separate can be greatly improved, the mutual content of the copper and the molybdenum is effectively reduced, the separation index is excellent, adopted agents are nontoxic and harmless, and the influence on the environment is small.

The invention discloses a low-alkali separation method for high-sulfur copper-zinc ore. The low-alkali separation method comprises the following steps: grinding of raw ore; copper roughing, wherein dry calcium oxide powder, a zinc inhibitor, namely solid sodium pyrosulfite powder and an efficient copper collecting agent are added in the process of copper roughing, and rough copper concentrate andcopper roughing tailings are obtained; multi-stage copper scavenging, wherein the dry calcium oxide powder, the zinc inhibitor solid sodium metabisulfite powder and the efficient copper collecting agent are added in each stage of scavenging operation; regrinding of the rough copper concentrate; and copper concentration, wherein the reground rough copper concentrate is subjected to multi-section concentration operation, and the dry calcium oxide powder and the zinc inhibitor solid sodium metabisulfite powder are added in each section of concentration operation. The method can overcome the defects of existing high-alkali copper-zinc separation processes for the high-sulfur copper-zinc ore and solve the problem of low recovery rate of associated noble metals.

The invention discloses a flotation method for separation of copper-lead mixed concentrate adopting sodium hydroxide. The flotation method lies in that sodium hydroxide and zinc sulfate are taken as a lead mineral inhibitor, isopropyl ethylthionocarbamate is taken as a copper mineral collector, after copper-lead mixed concentrate is subjected to roughing separation, the tailings is subjected to multi-stage copper scavenging to obtain lead concentrate, the concentrate is subjected to multi-stage copper concentration to obtain copper concentrate, so that high efficiency separation of copper-lead mixed concentrate is realized, the copper concentrate and lead concentrate obtained are high in recovery rate and low in mutual inclusion. According to the flotation method for separation of copper-lead mixed concentrate adopting sodium hydroxide, reagent removal and dehydration are not needed, mixed concentrate is directly subjected to separation, the flow structure is simple, reagents are fewer and low in dosage, and the process is environment-friendly and free from contamination.

The invention discloses a beneficiation separation method for copper-zinc sulfide ore with a high copper-zinc ratio, which comprises the following steps: by taking copper-zinc sulfide raw ore with the high copper-zinc ratio as a raw material, mixing the copper-zinc sulfide raw ore with the high copper-zinc ratio with slaked lime and aniline black to prepare a first inhibitor, a first collecting agent and water to prepare raw ore pulp; carrying out primary flotation separation on the raw ore pulp to obtain first copper-zinc bulk concentrate and mixed tailings, and carrying out magnetic separation on the first copper-zinc bulk concentrate in an environment with magnetic field intensity of 1.3 T to obtain second copper-zinc bulk concentrate and product first copper concentrate; and thickening the second copper-zinc bulk concentrate, and carrying out secondary flotation on the thick underflow to obtain second copper concentrate and second zinc concentrate. According to the beneficiation separation method, the copper-zinc sulfide raw ore with the high copper-zinc ratio can be effectively separated, the separation process is simple, the types of agents needing to be added are reduced, and the dosage of the agents is also greatly reduced; the zinc content in the copper concentrate product is low, the copper content in the zinc concentrate product is low, the zinc recovery rate is increased, and the product quality is also effectively improved.

The invention discloses a combined lead inhibitor for micro-fine particle galena and application of the combined lead inhibitor. The active components of the combined lead inhibitor are composed of polymaleic acid, water glass and carboxyethyl cellulose, and a mass ratio of the polymaleic acid to the water glass to the carboxyethyl cellulose is (1-6): (2-5): (0.25-2). According to the invention, the organic inhibitors including the polymaleic acid and the carboxyethyl cellulose and the inorganic inhibitor water glass are combined according to the certain mass ratio, and through the synergisticeffect of the agents, the dosage of the combined lead inhibitor is reduced compared with the dosage of the agents used alone, and the inhibition performanceof the combined lead inhibitor is also significantly enhanced. The combined inhibitor can efficiently and selectively inhibit coarse and medium-sized galena, has a good inhibition effect on micro-fine particle galena, basically does not influence flotation of chalcopyrite, and achieves the purpose of selective separation. The combined inhibitor is formed by combining water-soluble micromolecular carboxylic acid, high-molecular organic matter CEC and conventional inhibitors, and is simple to prepare and easy to industrially implement; and meanwhile, HPMA is an excellent water treatment agent and can be used for complexing heavy metal ions in beneficiation wastewater, so wastewater recycling difficulty is greatly reduced.