21 results about "Galena" patented technology

The invention discloses an organic inhibitor for galena and application of the organic inhibitor. The inhibitor is 3-mercapto-1 sodium propane sulfonate (MPS). Aiming at the characteristics of close copper and lead symbiosis, high iron and zinc content and fine disseminated particle size of raw ore, the method adopts the technological process of'copper and lead partial bulk flotation tailing discarding-bulk concentrate regrinding-copper and lead separation flotation ', and comprises the following steps: firstly, in a bulk flotation section, utilizing a zinc sulfate and sodium sulfite combined reagent to efficiently inhibit sphalerite and pyrite under a weakly alkaline condition; a large number of gangue and zinc-sulfur minerals are thrown away in advance; the method comprises the following steps of: carrying out superfine regrinding dissociation on obtained bulk concentrate, then carrying out separation operation, and in a copper-lead separation section, replacing traditional dichromate with 3-mercapto-1 sodium propane sulfonate (MPS), carrying out a closed-loop process of one-roughing, three-refining and three-sweeping, and supplementing an inhibitor in fine selection operation, so that efficient inhibition of galena and preferable flotation of chalcopyrite are realized. The technological process is rigorous in design, the reagent system is green and environmentally friendly, and the resource recovery rate of the low-grade complex ore is remarkably increased.

The invention discloses a method for flotation separation of galena and sphalerite, and belongs to the technical field of mineral flotation. The method comprises the steps that sodium hypochlorite and manganese sulfate are added into lead-zinc bulk concentrate pulp for an oxidation reaction, filtering is conducted after the reaction, polyvinyl alcohol is added into filter residues for continuous reaction, and treated pulp is obtained; and then a collecting agent and a foaming agent are added, and efficient separation of galena and sphalerite is achieved through the flotation process of one-time roughing, three-time refining and two-time sweeping. Sodium hypochlorite and manganese sulfate have a synergistic effect in ore pulp, a hydrophilic oxide layer and an inorganic film are formed on the surface of the sphalerite, and polyvinyl alcohol further forms a compact organic adsorption layer through hydrogen bonds, so that inhibition on the sphalerite is enhanced. The method can effectively inhibit sphalerite and improve lead-zinc separation selectivity and efficiency, and is especially suitable for separation of complex lead-zinc ore.

The application provides a copper-lead sulfide ore flotation separation inhibitor and a preparation method and application thereof, and belongs to the technical field of ore-dressing reagents. The main components of the inhibitor are maleic acid acrylic acid copolymer, trisodium nitrilotriacetate and sodium sulfite. In the preparation, the maleic acid acrylic acid copolymer, the trisodium nitrilotriacetate and the sodium sulfite are mixed at normal temperature, and then are added into a high-shear emulsifying machine to be emulsified and dispersed, so that a uniform viscous suspension inhibitor is obtained. In the application, after the raw ore is treated, preselected ore slurry is obtained; copper-lead mixed flotation is performed first to obtain copper-lead mixed concentrate and copper-lead tailings; active carbon and sodium sulfide are added into the copper-lead mixed concentrate first, and reagents are added to perform copper-lead separation flotation to obtain copper and lead concentrates. The inhibitor has the advantages of being cheap, easy to obtain and store and environment-friendly. The inhibition effect on galena is good, the copper-lead sulfide ore separation effect is good, and the ore-dressing indexes are effectively improved.

An electrochemically mediated, hydrometallurgical method is provided for extraction of nickel, zinc, lead, silver, molybdenum, and / or copper from sulfide minerals. These metal concentrates, such as pentlandite, pyrrhotite, pyrite, sphalerite, galena, Ag2S, MoS2, etc., are contacted with nitric acid and cerium(IV) nitrates, cerium(IV) methanesulfonate, and / or cerium(IV) sulfate, as oxidative leaching agents to preferentially leach the target metals contained therein. The strong oxidizing capacity of cerium(IV) enables rapid dissolution of metal sulfides under ambient conditions. Cerium(IV) can be electrochemically regenerated and recycled for treatment of additional sulfide minerals. Target metal products can be extracted via processes such as solvent extraction and precipitation, enabling complete recovery, e.g., of nickel from pentlandite.

The invention discloses an impurity-reducing and quality-improving flotation method for arsenic-containing and lead-containing low-grade copper ore and application, and the flotation method is specifically used for separating and recycling pyrite minerals of the ore through primary ore grinding, two times of roughing, at least two times of scavenging, secondary ore grinding and at least five times of concentration. Two-stage roughing is matched with staged precise dosing, agent waste is avoided, it is guaranteed that slow-floating target minerals enter fine selection, gangue inclusion is reduced, and the grade and the recovery rate are improved; and a collecting agent hydrophobic membrane on the surface of the mineral is removed through secondary grinding, the monomer dissociation degree is improved, favorable conditions are created for impurity inhibition, and the separation precision is optimized. The high-selectivity copper collecting agent is matched with a lead and sulfur combined inhibitor, the problem that the effect of a single inhibitor is poor is solved, galena, iron sulfide and arsenopyrite are synergistically inhibited, and the content of lead and arsenic is greatly reduced. The agent is nontoxic and environment-friendly, equipment blockage and corrosion are reduced, the wastewater treatment cost and the environmental influence are reduced, and the unification of quality improvement, efficiency improvement, environmental protection and economy is realized.

The invention discloses an efficient flotation inhibitor for galena and pyrite separation and application of the efficient flotation inhibitor. The inhibitor adopts a ternary compound system of modified lignosulfonate, an organic phosphate corrosion inhibitor and an organic reducing agent, and all the components have a synergistic effect. And the used components are low-toxicity or non-toxic organic compounds and do not contain extremely toxic substances such as cyanide and dichromate, so that the alkaline tailing pollution of a high-alkali lime method is avoided, and the green mineral separation requirement is met. During application, efficient separation can be realized under a weak base condition, the pH of ore pulp does not need to be increased to 11 or above, lime consumption is greatly reduced, corrosion and abrasion of equipment are reduced, and meanwhile, the over-inhibition risk of galena is reduced. The dosage of a roughing inhibitor is small, and the total dosage is low due to subsection decrement addition during concentration. And the N, N-diethyldithiocarbamate is adopted as the collecting agent, the agent system is simple, and industrial implementation is easy. The inhibitor still has a good inhibition effect on pyrite activated by copper ions, overcomes the defect of poor adaptability of a traditional high-alkali method, and has strong adaptability to ores with different properties.

The application discloses a lead-copper ore copper-lead separation process, comprising the following steps: S1, raw material pretreatment: crushing and screening the lead-copper ore, screening out the ore material with a particle size of 2-25 mm, and moving the ore material larger than 25 mm and the ore material smaller than 2 mm to other workshops for treatment; S2, water washing and desliming: washing away the redundant silt and stone powder and other impurities on the ore with water flow, and then putting the water-washed ore into an ore gravity separation equipment. Before the lead-copper ore is separated, the raw material of the lead-copper ore is pretreated, the mineral raw material with a particle size of 2-25 mm is selected after crushing and screening, and the mineral raw material is centrifugally separated after water washing and desliming, so that the lead ore and the copper ore can be effectively preliminarily separated, then the lead ore and the copper ore which have been separated are separated again in combination with a flotation process, and separate concentrates are obtained, and through multiple separation, the quality of the copper concentrate and the smelting efficiency can be effectively improved.

The invention discloses a polymer-like flocculation flotation method for micro-fine particle lead zinc ore, and relates to the technical field of mineral processing. The polymer-like flocculation flotation method for the micro-fine particle lead-zinc ore comprises the following steps: S1, mixing an ore sample to be treated with water, and pre-stirring to obtain prepared ore pulp; the pH value of the prepared ore pulp is adjusted to be 7-13, and to-be-treated ore pulp is obtained; s2, ferric trichloride is added into the ore pulp to be treated, and first ore pulp is obtained; s3, adding a natural polysaccharide flocculant into the first ore pulp to obtain second ore pulp; s4, polyoxyethylene is added into the second ore pulp, and third ore pulp is obtained; s5, a sulfide mineral collecting agent is added into the third ore pulp, and fourth ore pulp is obtained; s6, a foaming agent is added into the fourth ore pulp, and galena concentrate and tailings are obtained after flotation and foam scraping; wherein the to-be-treated ore sample comprises galena and sphalerite, so that the recovery rate of the galena is effectively increased, and meanwhile, the entrainment recovery rate of the sphalerite is remarkably reduced.

The invention discloses application of acetylthiazole as a collecting agent in separation of copper-lead bulk concentrate, and belongs to the technical field of mineral separation. The method comprises the following steps: firstly, adding activated carbon into the copper-lead bulk concentrate to carry out reagent removal treatment, then adding sodium sulfite as a galena inhibitor, acetylthiazole as a chalcopyrite collecting agent and 2 # oil as a foaming agent, and carrying out one-roughing, three-refining and two-sweeping operation to obtain copper concentrate and lead concentrate; the chalcopyrite collecting agent is acetylthiazole, has good selectivity to chalcopyrite and weak affinity to galena, and can enable the content of galena in copper concentrate to be the lowest and obtain higher copper and lead recovery rates under the condition that the dosage of a galena inhibitor is small.

The application discloses a copper-lead mixed concentrate separation method and a combined lead inhibitor for copper-lead separation. The method comprises the following steps: using organic carboxylic acid, amino acid polymer and humic acid salt as the combined inhibitor for copper-lead separation, carrying out lead-inhibiting copper floating, and obtaining preliminary copper concentrate and lead concentrate; wherein the ratio of the organic carboxylic acid, the amino acid polymer and the humic acid salt is (3-5):(1-2):1. The combined inhibitor for copper-lead separation is used to carry out lead-inhibiting copper floating, so that the copper mineral recovery rate can be improved and the copper mineral loss rate can be reduced while the lead mineral is inhibited. In addition, the preliminary copper concentrate obtained by floating based on the combined inhibitor for copper-lead separation is classified, and the part below the classified particle size is subjected to lead removal treatment, so that the problem that fine galena is difficult to separate in the lead-inhibiting copper floating process is further solved.

This invention discloses a flotation separation method for collecting galena and inhibiting sphalerite and pyrite, achieving efficient separation of galena from sphalerite and pyrite in a low-alkaline pulp environment, belonging to the field of mineral beneficiation technology. This invention uses N-hydroxyethylethylenediaminetriacetic acid as an inhibitor of sphalerite and pyrite at a low alkalinity of pH 7.5-9.5, and one or two of sodium diethyldithiocarbamate, sodium ethyl xanthate, and xylenol dithiophosphate as collectors for galena. Under low dosage conditions, it achieves simultaneous inhibition of sphalerite and pyrite and effective collection of galena, offering advantages of high efficiency, simple process, economy, and environmental friendliness. It is particularly suitable for silver-bearing, high-sulfur, low-grade lead-zinc ores and has broad application prospects.

A method for enriching galena and native gold in the separation of polymetallic sulfide ores includes the following steps: Step 1: First coarse grinding: The sulfide minerals and native gold are initially enriched through a first coarse grinding process; Step 2: Mineral separation is achieved through fine particle size classification based on the differences in mineral brittleness / ductility: The main particle size of the minerals in the grinding product exhibits a pattern of galena < pyrite < chalcopyrite < native gold. During particle size classification, the particle size range is divided based on the types and quantities of minerals in the raw material. The first coarse grinding refers to: crushing the polymetallic sulfide ores to a particle size of approximately 3–20 mm, followed by coarse grinding to achieve a -200 mesh content of approximately 40%–50%, resulting in a relatively pure galena / native gold mixed concentrate. This invention can relatively simplify the traditional flotation process, reduce the consumption of reagents (such as inhibitors and collectors) during the separation process, and improve the green characteristics of the process.

The application discloses a combined inhibitor for low-alkali flotation separation of silver-containing lead-zinc sulfide ore and application thereof and belongs to the technical field of non-ferrous metal dressing. Sodium carbonate and water glass are added in the grinding stage to control the dispersibility and alkalinity of the ore slurry; butylamine black dithiophosphate and aniline black dithiophosphate are used as combined collectors for galena in the lead flotation stage, and the combined inhibitor simultaneously inhibits the sphalerite and pyrite, thereby reducing the pollution of zinc-sulfur minerals to the lead concentrate; copper sulfate is used to activate the sphalerite in the zinc flotation stage, and ethyl xanthate is used as a collector to recover zinc minerals, and the pyrite still maintains a stable inhibited state at this time, thereby guaranteeing the grade of the zinc concentrate. The application uses aminopimelic amide as the sphalerite and pyrite inhibitor, and combines zinc sulfate and ferrous sulfate to build a composite inhibition system, so that the lead, zinc and sulfur minerals can be efficiently separated under a weak-alkaline ore slurry environment, the associated silver and precious metals can be maximally recovered, the waste of the precious metal resources is avoided, and the comprehensive recovery of the lead, zinc and silver polymetallic minerals is realized.

The invention discloses a galena and chalcopyrite flotation separation method, and belongs to the technical field of mineral processing and flotation separation. The method specifically comprises the following steps: firstly, adding a combined inhibitor into lead-copper sulfide ore to inhibit galena; and then filtering, adding an organic agent isethionic acid into the ore, filtering, then adding a collecting agent and a foaming agent, and finishing efficient separation of galena and chalcopyrite through one-time roughing, three-time refining and two-time sweeping. The method has the advantages of being efficient, environmentally friendly, wide in pH adaptation range, simple in technological process and the like, a traditional toxic inhibitor can be replaced, and efficient cleaning separation of lead and copper is achieved.

A method for selecting a collector for synchronous lead-silver enrichment based on coordination chemistry and electrochemistry includes: acquiring electrochemical information on a solid-solid interaction between a silver mineral and galena; acquiring the galena, the silver mineral, and potential targeted mineral-philic groups of the galena and the silver mineral, and outputting chk files; analyzing the quantum chemical calculation chk files to obtain shape and energy level information of frontier molecular orbitals of related minerals and the mineral-philic groups; preliminarily identifying a targeted mineral-philic group for the silver mineral; thermodynamically, determining whether the targeted mineral-philic group preliminarily identified for the silver mineral demonstrates a better adsorption capacity than other mineral-philic groups for the silver mineral; and calculating solvation free energies of targeted mineral-philic group derivatives with different carbon chain lengths and shapes, and determining a final mineral-philic reagent.

The invention belongs to the technical field of mineral separation, and particularly relates to a flotation separation method for galena and pyrite. The method specifically comprises the steps that galena and pyrite are crushed, mixed and subjected to size mixing, then the pH is adjusted to 6.5-7.5, and ore pulp is obtained; adding a complexing agent into the ore pulp, and mixing the pulp; then a combined collecting agent is added, and size mixing is conducted; finally, adding a foaming agent and mixing; flotation is conducted after pulp mixing is finished, and concentrate and tailings are obtained respectively; the complexing agent is selected from EDTA-2Na; the combined collecting agent is composed of 3418A and a thiourea compound with the structural formula shown in the specification, and R is selected from vinyl, allyl or ethyl. Through the synergistic effect of the complexing agent and the combined collecting agent, the flotation composite agent can be suitable for flotation separation of lead-iron sulfide minerals under the neutral pH condition, then efficient separation of galena and pyrite is achieved, and the galena and pyrite flotation composite agent under the neutral pH condition is environmentally friendly.

The invention discloses quaternary ammonium cation modified lignin, a preparation method of the quaternary ammonium cation modified lignin and application of the quaternary ammonium cation modified lignin as a chalcopyrite inhibitor, and belongs to the technical field of mineral separation. The molecular structural formula of the quaternary ammonium cation modified lignin is shown in the specification. Wherein R1, R2, R3 and R4 are independently selected from hydrogen or quaternary ammonium salt groups, and at least one of R1, R2, R3 and R4 is a quaternary ammonium salt group; the preparation method comprises the following steps: alkalizing lignin to obtain alkalized lignin; and then carrying out etherification reaction with quaternary ammonium salt to obtain quaternary ammonium cation modified lignin. The product has a selective inhibition effect on the flotation of the chalcopyrite, and is particularly suitable for the flotation separation of metal sulfide ores (such as molybdenite, galena and the like) and the chalcopyrite.

The invention discloses a flotation separation method for lead-zinc sulfide ore mixed rough concentrate, and belongs to the technical field of mineral processing. Aiming at the lead-zinc sulfide ore mixed rough concentrate, firstly, the rough concentrate is ground to a certain fineness and then is subjected to solid-liquid separation; secondly, water and acid are added into the filter cake after ore grinding for size mixing to a certain concentration and a certain pH value; and then glutathione is adopted as a selective inhibitor of sphalerite in the lead-zinc bulk concentrate for the ore pulp, then galena in the bulk concentrate is subjected to flotation, lead-zinc separation is conducted through a proper flotation technology, and lead concentrate and zinc concentrate with the low lead-zinc mutual content are obtained. According to the method, the lead-zinc separation problem caused by good floatability of galena and sphalerite in the lead-zinc bulk concentrate is effectively solved, meanwhile, it is guaranteed that the lead and zinc have the high recovery rate, and a new method is provided for efficient flotation separation of the lead-zinc bulk concentrate.

The invention discloses a reverse flotation quality improving and impurity reducing method for impurity-containing lead concentrate, and belongs to the technical field of mineral processing. The method comprises the steps that glutathione is used as an inhibitor to inhibit lead minerals in the impurity-containing lead concentrate, flotation is conducted on talc impurity minerals in the impurity-containing lead concentrate, quality improvement and impurity reduction are conducted through a reverse flotation technology, and the lead concentrate is obtained. According to the method, the problem of galena and talc separation caused by excellent natural floatability of talc in the impurity-containing lead concentrate is effectively solved, the content of talc in the lead concentrate can be remarkably reduced, meanwhile, the high recovery rate of lead is guaranteed, and an efficient and reliable new way is provided for quality improvement and impurity reduction of the high-impurity lead concentrate.

The application discloses a method for strengthening flotation recovery of complex high-sulfur lead-zinc ore associated silver in lead concentrate, which comprises the following steps: firstly, slurry is prepared from the ore to be treated to obtain raw ore slurry with a grinding fineness of 70-90% of 0.074 mm; then, a zinc inhibitor and a sulfur inhibitor Fe-tannin acid complex are added into the raw ore slurry; then, a lead collector and a foaming agent are added into the raw ore slurry to carry out lead separation operation, and finally, lead concentrate with high silver grade is obtained. The sulfur inhibitor Fe-tannin acid complex used in the application forms a stable hydrophilic film on the surface of pyrite through a double mechanism of "homogeneous ion affinity effect" and "polyphenol-iron chelation", efficiently inhibits pyrite, and has no significant influence on the floatability of galena and associated silver minerals, so that the silver grade and recovery rate of the lead concentrate are improved.

This invention discloses a combined inhibitor for the flotation separation of silver-bearing lead-zinc sulfide ores and its application, belonging to the field of mineral beneficiation technology. This invention utilizes the synergistic effect of allantoin and zinc sulfate, employing a flotation process of one roughing, two scavenging, and three cleaning steps to efficiently inhibit sphalerite, achieving efficient separation of galena and sphalerite, while significantly improving the recovery rate of associated silver in lead concentrate. This method effectively inhibits sphalerite even under natural pH conditions, not only reducing the environmental risks of mining production but also ensuring the flotation recovery of associated precious metals such as silver.