175 results about "Sphalerite" patented technology

The invention discloses a lead and zinc flotation method to ferreous blende and pyrrhotite typed complex lead zinc silver sulphide ore, mainly comprising lead ore branch flotation which controls the electrochemical conditions of the flotation and the zinc and sulfur flotation separation which controls the electrochemical conditions of the flotation. The invention has the advantages of implementing the lead-zinc sulfur separation by adopting twice branch flotation, carrying out fast flotation to the lead ore by using a novel composite catching agent to the galena and silver ore with easy floating coarse grains under the conditions of higher ore pulp potential and low pH; the normal flotation of the lead ore with difficultly floated fine grains is carried out under the conditions of lower ore pulp potential and high pH. The pH of the ore pulp is adjusted to more than 12 by lime for the gangue after the lead is floated; the iron blende is activated by bluestone; the iron blende is recovered by the catching agent with the same type of the lead sulfide floatation, thus leading the property of the lead flotation waste water to be basically consistent with that of the zinc flotation waste water and being beneficial for the circular application of floatation waste water.

The invention discloses a technology of enhanced-dispersion partial selective and bulk flotation of lead and zinc sulfide ores under low and high alkalinity. During grading of the lead and zinc sulfide ores, sodium hexametahposphate is taken as a dispersion agent and directly added into a ball mill, the ores are ground till the ores with the size of 0.074mm account for 67%-70%, lime is taken as an adjusting agent, zinc sulfate and sodium sulfite are taken as inhibitors, dithiophosphate BA and diethyldithiocarbamate are taken as collectors, and selective flotation of part of lead minerals with good floatability can be performed under low alkalinity; then xanthate and the diethyldithiocarbamate are taken as collectors, and the flotation of the lead minerals is further performed under high alkalinity; copper sulfate is added in lead flotation tailings for activation, butyl xanthate is further taken as the collector for flotation of zinc blende and part of pyrite, and zinc-sulfur separation flotation is further performed on zinc-sulfur mixed concentrate; and sulfuric acid is added in zinc flotation tailings for activation, and the xanthate is taken as the collector for flotation of the remaining pyrite. By adopting the technology, the lead-silver recovery rate can be improved, the using amount of lime and sulfuric acid can be reduced, the circulating amount of middlings can be reduced, the ore dressing cost can be reduced and the grade of the concentrate can be improved.

A process for extracting Cu from the Cu-contained pyrite by bacteria features that the electrochemical catalyzing action of bacteria to different sulfide ores is used sufficiently, that is, the low-potential copper sulfide is used as corrosion anode, the high-potential pyrite or gold-silver ore is used as cathode, the bacteria are used to promote the Galvanic ell effect between them, and for the residual pyrite, the special microspirobacteria are used to suppress its oxidization. Its extraction-out rate can reach more than 75% within 4 months.

The invention discloses a flotation separation inhibitor and separation method of galena, pyrite and sphalerite, and belongs to the technical field of mineral processing. The method includes adopting raw ores of sulfide lead-zinc mine as raw material, and adding SDSN (dimethyl dithiocarbamate : 2-(methylthio)ethylamine = 1-3:1)to serve as inhibitor of the pyrite and the sphalerite so as to perform lead and zinc sulphur flotation separation after the raw ores are grinded. Compared with an existing lead and zinc sulphur separation technology, the composite inhibitor SDSN has the advantages that selectivities of the pyrite and the sphalerite are high, inhibiting capability is high, usage is fewer, and adding is facilitated. The the pyrite and the sphalerite can be inhibited well, efficient separation of the galena and the zinc sulphur is implemented, the problems that according to the traditional lime or cyanide method, the recovery rate of associated gold, silver and other precious metals in the lead-zinc sulfide mine is low and ecological environment is seriously damaged are overcome, and an efficient and environment-friendly flotation separation method is provided for complex sulfide lead-zinc mine separation.

The invention discloses a flotation separation method for chalcopyrite, galena, zinc blende and ironpyrite by a composite inhibitor which comprises sodium pyrosulfite, sodium sulfite and ferrous sulfate, has an inhibition effect on the galena, the zinc blende and the ironpyrite under the condition of a natural pH value, and is easy to degrade and activate after inhibition during a separation process of the chalcopyrite, the galena, the zinc blende and the ironpyrite. According to the flotation separation method, the flotation is performed under the condition of a neutral medium, the adopted composite inhibitor has the inhibition effect on three metal sulphide ores of the galena, the zinc blende and the ironpyrite; environment pollution caused by adoption of heavy metal salt inhibitors is prevented; pipeline scaling caused by adoption of lime is prevented; and the inhibiting capacity of the composite medicament is relatively weaker and added segmentally, an activation difficulty of follow-up operation due to overinhibition in a flotation process is prevented, and the improvement of the metal recovery rate is further facilitated.

The invention discloses a lead-zinc floating recycling method from gold ore cyanation tailings, which comprises the following steps: (1) predisposing: adding water in the cyanation tailings; stirring to form ore paste; adding active carbon, Y0 agent, FeSO4+ammonium persulphate in the ore paste; (2) asynchronous mixing-selecting: sending the predisposed ore paste to the floater group I to proceed first roughing separation; adding Y0 agent, limestone, butyl airpotato yam to float galena; sending the tailings in the first roughing separation to floater group II; adding Y0 agent, limestone, cupric sulfate, butyl airpotato yam to float zincblende; (3) recycling and purifying tailing water: adding chlorinated lime in the tailing water to decompose CN- less than 0.5 mg per L; recycling the tailing water.

The invention provides a beneficiation method for complex multi-metal sulfide electrum comprehensive recovery. According to the technical scheme, an efficient re-separation technology of Knelson concentrators is adopted according to the property and the characteristic of multi-metal sulfide electrum, and coarse gold particles are recovered in the early stage; through composite reagents of sodium sulfite, zinc sulfate and sodium silicate, slurry is highly dispersed, sphalerite and pyrite are inhibited intensively, and a novel collecting agent BK301 is adopted for synchronous flotation enrichment of gold, lead and copper minerals; copper sulfate is adopted for activation, and a fine separation technology is performed many times under high alkalinity (the pH of ore pulp ranges from 11 to 12), influences of slurry are effectively eliminated, and active separation on the sphalerite is achieved; for high-viscosity micro-fine particle cyanidation slag, the composite reagents of lime and zinc sulfate are used for intensively inhibiting copper and sulfur, and optimized lead separation is performed; the adjusting agent sodium pyrophosphate is used for efficient activated separation of copper, and therefore lead separation and copper separation are separately performed.

The invention discloses a method for recycling sphalerite from separated tailings of lead-sulfur bulk concentrate. The method for recycling the sphalerite from the separated tailings of the lead-sulfur bulk concentrate comprises the steps that firstly, water is added to the separated tailings of the lead-sulfur bulk concentrate, and the mass percent concentration of a pulp is adjusted to be 25%-32%; secondly, an appropriate amount of lime is added so that the pH value of the pulp can be adjusted, and pyrite is inhibited at the same time; thirdly, copper sulfate is added as an activating agent to activate the sphalerite; and finally, a collecting agent, aniline, and a foaming agent are added for flotation of the sphalerite, the flotation procedure comprises one-time rough flotation, two-time scavenging and three-time concentration (after the concentrate obtained through rough flotation is ground to the extent that the ores reaching the grain level of >-0.043 mm account for 90%, concentration is conducted ), and effective concentration of the sphalerite is achieved. According to the sphalerite obtained through the method, the zinc grade is higher than 40%, and the recovery rate of zinc is higher than 80%. By the adoption of the method for recycling the sphalerite from the separated tailings of the lead-sulfur bulk concentrate, the zinc lost in the lead-sulfur separated tailings, namely sulfur products, can be well recycled, the comprehensive recovery rate of zinc is improved, and the economic benefits of a concentrating plant are increased.

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 the technical field of non-ferrous metal beneficiation, in particular to a non-copper sulphide ore inhibitor and application thereof. The non-copper sulphide ore inhibitor isprepared from the following components in parts by mass: 1-3 parts of xanthan gum, 1-2 parts of pectin and 1-2 parts of arabic gum. The non-copper sulphide ore inhibitor is simple in preparation, lowin cost and green and environment-friendly and has a quite high inhibition effect on molybdenite, galena, sphalerite, pyrite and other sulphide ores in the copper bulk concentrate. With application ofthe inhibitor, efficient flotation separation of chalcopyrite and other sulfide minerals can be achieved.

The invention discloses a manufacturing process of iron oxide red transmutation glazed porcelain. The iron oxide red transmutation glazed porcelain comprises a green body and an iron oxide red glaze,wherein the green body is prepared from the following raw materials: Dehua feldspar, Dehua quartz, Dehua kaolin, sillimanite, szaibelyite, boehmite, sphalerite, zinc oxide and zirconium oxide. By limiting the composition of the green body and improving the basic formula of the glaze, a plurality of orange plaques with the sizes of broad beans and peas are distributed on the glaze surface of the fired iron oxide red transmutation glazed porcelain.

The invention provides a beneficiation process of a lead-zinc-silver ore. The ore grinding fineness of a raw ore in the ore grinding operation is 50-60% of -200 meshes; the lead roughing in the lead selection operation is firstly performed for the raw ore after ball milling; a diesel adding step is added before the lead roughing; the zinc roughing in the zinc selection operation is performed for the raw ore after the lead selection operation; and a diesel adding step is added before the zinc roughing. The beneficiation process of the lead-zinc-silver ore eliminates pyrite inhibitor sodium sulfite in a traditional flotation reagent, reduces the cost, facilitates increment of the lead, zinc and silver yields, prevents bad groove deflection phenomenon in the flotation process when the oxidation degree of the lead-zinc-silver ore is higher, and is high in capturing capacity of a sphalerite by diesel.

The invention relates to a pressurization, water immersion and oxidation preprocessing cyaniding gold extraction method for difficult-processing gold concentrates, which aims at the gold concentrates with higher sulfur-containing, mainly containing iron pyrite, concomitant with copper pyrite, zinc blende and the like, and comprises the following steps: performing ball-milling on the raw material gold concentrates, performing size mixing, cyaniding for gold extraction after pressurization, water immersion and oxidation preprocessing to obtain a pregnant solution with gold-containing of 0.010 g/L-0.040 g/L, and the gold cyanide leaching rate reaches 96% of a smelting indicator. In the invention, the initial media are neutral, an acid or alkali reagent is not needed, and only the neutral additive lignosulphonate is needed, so that the process cost is reduced, and the extremely high gold recovery rate is realized at the same time.

The invention discloses a combined inhibitor for zinc sulfide ore and application thereof. The combined inhibitor comprises the following active components: polyepoxysuccinic acid (PESA), zinc sulfateand sodium sulfite in a mass ratio of (0.25-2): (25-100): (10-50). According to the principle of mixed medication, the water-soluble micromolecular carboxylic acid (PESA) and conventional inhibitorsincluding Na2SO3 and ZnSO4 are combined according to the certain mass ratio, and through the synergistic effect of the agents, the dosage of the combined inhibitor is reduced compared with the dosagesof the agents used alone, and the inhibition performance of the combined inhibitor is also remarkably enhanced. The combined inhibitor can efficiently and selectively inhibit activated iron/sphalerite, basically does not influence flotation of chalcopyrite/galena, and achieves the purpose of selective separation; the novel combined inhibitor is formed by combining the PESA and the conventional inhibitors, and is simple to prepare and easy to industrially implement; and the PESA is an excellent water treatment agent and can complex heavy metal ions in beneficiation wastewater, so the difficulty of wastewater reuse is greatly reduced.

The invention discloses a solvothermal controllable method for preparing ZnSe and ZnTe nano materials. The method comprises the following steps of: placing a Se source or Te source of an analytical reagent in an polytetrafluoroethylene inner lining; adding an ethanolamine solvent to ensure that the solution is 80 percent based on the total volume of the polytetrafluoroethylene inner lining; performing magnetic stirring for several minutes; adding the Zn source of the analytical reagent again; performing magnetic stirring uniformly and then sealing a reaction kettle; and placing in a baking oven at the temperature of 200 DEG C and reacting for 24 hours, after completing the reaction, cleaning to obtain a product. The ZnSe and ZnTe nano materials with a blende or wurtzite structure can be controllably synthesized successfully in one step in the same system by changing the Se source or the Te source through a simple solvothermal method under the mild condition for the first time. The method has the characteristics of simplicity, low cost, high yield, high uniformity of products, high controllability, environment friendliness and easiness in popularization and is suitable for large-scale production.

The invention discloses a magnetic aluminum nitride thin film material of a sphalerite structure and a preparation method and an application. In Sc-doped aluminum nitride, the crystal structure of the Sc-doped aluminum nitride is the sphalerite structure, and Sc elements occupy the position of part of Al elements in crystal lattice. The molar ratio of Sc to Al is 76:24. The molar ratio of the Al elements and the Sc elements to nitrogen elements is 1:1. The material prepared through the method is a diluted magnetic spin semiconductor material with sphalerite, the Curie temperature of the material of the sphalerite structure is high, the room temperature stability is good, and the spin injection efficiency is high; the crystal structure of reported diluted magnetic semiconductor GaN belongs to a hexagonal crystal system, the magnetism is weak and close to the super paramagnetic properties, and therefore application prospects are broad.

The main objective of the invention was to develop a new flotation collector that could eliminate or reduce the amount of copper sulfate used in the flotation of sphalerite. Different series of collectors such as cupferrons, arylhydroxamic acids and amino mercaptans or amino thiols were synthesized and tested. Amino mercaptans/aminothiols were found to be very effective in floating sphalerite from a lead-zinc ore using only 10-15% of copper sulfate used with conventional xanthate collector. The present invention does not require any alteration in the current mill practices. This warrants only changing the flotation collector in zinc flotation stage from, for example, potassium amyl xanthate (PAX) to the new collector.

The invention discloses CuInS2 quantum dots with a sphalerite structure and a wurtzite structure and a preparation method thereof. The CuInS2 quantum dots of which the grain sizes are between 2 and 5 nanometers are synthesized through a solvent hot reaction by using environmental-friendly ethanol as a solvent; and the CuInS2 quantum dots of two crystal forms, namely the CuInS2 quantum dots with the sphalerite structure and the wurtzite structure are prepared by changing the variety of a surfactant, namely thiophenol or mercaptan. The prepared quantum dots have the good dispersibility in an organic solvent, and have important application value in fields of optical materials, coating materials, photovoltaic materials, organic-inorganic composite materials and the like.

The invention discloses a flotation separation method of refractory lead-zinc sulfide ore and a sphalerite inhibitor of the refractory lead-zinc sulfide ore, the sphalerite inhibitor is a composition of calcium hypochlorite and carbonized sodium cyanurate, the mass ratio of calcium hypochlorite to carbonized sodium cyanurate is 1: (2 to 4), and the inhibitor composition can have a strong inhibition effect on sphalerite. The invention further provides a flotation separation method of the refractory lead-zinc sulfide ore, the refractory lead-zinc sulfide ore is subjected to ore grinding and grading treatment and size mixing, a sphalerite activating agent, a flotation collecting agent and a foaming agent are added, then inflation flotation is conducted, lead-zinc bulk concentrate dense underflow is obtained through regrinding and thickening, and the sphalerite inhibitor and a galena collecting agent are added for flotation separation; and the separated lead rough concentrate is subjected to sphalerite inhibition and repeated concentration to obtain lead concentrate, the galena collecting agent is added into the separated lead rough concentrate for repeated lead scavenging to obtain zinc concentrate, and therefore the refractory lead-zinc sulfide ore is economically and efficiently separated and enriched, and the method has wide industrial application prospects.

The invention discloses a low-sulfur type copper-lead-zinc polymetallic ore sequential preferential flotation separation method. According to the technical scheme, flotation of copper is carried out before flotation of lead. In the preferential flotation of copper, a combined inhibitor T-9 is used, and effective separation of valuable element copper in ore from lead and zinc is realized under the condition of pH 6-7. In the preferential flotation of lead, an inhibitor F-8 is used, and floating of zinc mineral is effectively inhibited. The T-9 reduces floatation activity of lead and zinc minerals and effectively increases floatability difference between copper and lead and zinc minerals, and the composition is nontoxic and harmless and is green and pollution-free. The inhibitor F-8 has a good inhibiting effect on sphalerite, has high activity to galena and silver mineral, has a certain collecting effect on galena, and is good for reducing mutual Inclusion of lead and zinc in the product. By the method, the target minerals copper, lead and zinc are effectively separated, thus achieving the purpose of comprehensive recovery and utilization of mineral resources.