15 results about "Oxide minerals" patented technology

A process for the recovery of valuable metals from oxide minerals, particularly polymetallic nodules, is disclosed. The process is suitable for the recovery of Cu, Co, Ni, Fe, and Mn, which are the main metals of interest in these polymetallic nodules. Among other features, the present process is characterized by the handling of Fe, which is dissolved and retained in solution until the crystallization stage instead of being removed in an earlier stage. A mixed Mn-Fe residue is obtained, which, after heat treatment, yields a Mn-Fe oxide suitable for the steel or manganese industries. Excellent yields of Cu, Co, and Ni are obtained, while the Fe is leached and recovered along with the Mn.

The invention relates to the field of water and soil pollution treatment, in particular to a method for reinforcing and fixing hexavalent chromium pollutants based on iron oxide in-situ vulcanization coupling organic matter, which comprises the following steps: step 1, injecting a vulcanizing agent into a hexavalent chromium polluted area, so that in-situ iron oxide minerals are subjected to vulcanization modification to generate modified minerals; 2, a natural organic acid solution is injected and reacts with the modified minerals, the fixing efficiency on hexavalent chromium is enhanced, and an iron sulfide oxide mineral-organic composite repairing material is generated in situ; and 3, the iron sulfide oxide mineral-organic composite repairing material reacts with hexavalent chromium, trivalent chromium precipitates are generated, and long-acting fixation of hexavalent chromium is achieved. The remediation efficiency and the application range of hexavalent chromium are remarkably improved, meanwhile, the method has the advantages of being simple and convenient in process, low in cost, environmentally friendly and the like, the method is particularly suitable for large-scale site remediation and practical engineering application, and a reliable technical means is provided for soil and underground water chromium pollution treatment.

The present application relates to a kind of floatation collector and its preparation method and application, belong to mineral processing technical field, solve the collector for the flotation of existing technology in oxide mineral to the low recovery rate of mineral, poor temperature resistance, environmental pollution, high energy consumption problem.The present application floatation collector is the compound shown in formula (1):Wherein n=7, 9 or 11.The compound is the cationic functional group compound containing two carboxyl groups and two amine groups, has higher polarity, can enhance the adsorption between collector and mineral surface functional group;At low temperature, it has good water solubility and dispersibility, help to improve the recovery rate of collector at low temperature;With the compound suitable carbon chain length, can realize flotation in wide temperature range, energy saving and carbon reduction;Polar group makes collector molecule can occur chelation with metal cation, enhances mineral recovery rate, and realizes the selective collection of metal ions in hard water.

This invention belongs to the field of mineral processing, and specifically relates to a method and application of deep sulfidation on the surface of complex copper-lead-zinc oxide minerals enhanced by a synergistic combination of mechanochemical and coordination chemistry. This invention utilizes a novel combination of copper-ammonia complex ions and ethylenediamine phosphate as activators, combined with ball milling, to facilitate deeper sulfidation on the surface of copper-lead-zinc oxide minerals. This technology, when combined with subsequent flotation reagent formulations, significantly improves copper recovery when applied to the flotation of copper oxide ores. This invention features a rationally designed composition, a simple and controllable preparation process, high recovery rate, and is suitable for industrial application.

The invention discloses a high-calcium zinc oxide ore flotation collector as well as a preparation method and application thereof. The high-calcium zinc oxide ore flotation collector is prepared from the following raw materials: 3-(dodecyloxy) propyl-1-amine, 3-(tetradecyloxy) propyl-1-amine, glacial acetic acid and di (2-ethylhexyl) phosphate. The collecting agent has the advantages that the surface tension of ore pulp is effectively reduced, separation of zinc oxide minerals and calcium-containing gangue minerals is enhanced, and therefore the collecting agent has the advantages of being good in selectivity, high in collecting capacity, low in agent dosage, resistant to low temperature and the like, is especially suitable for low-grade zinc oxide ores rich in easily-argillized calcium-containing minerals and has good zinc oxide flotation indexes.

The application belongs to the field of mineral flotation, and particularly discloses a composite branched alkyl salicylhydroxamic acid collector and a flotation application thereof. The composite branched alkyl salicylhydroxamic acid collector comprises formula 1A (1A), formula 1B (1B) and formula 1C (1C). The branched alkyl is introduced into the collector, so that the hydrophobic ability and the collecting ability are improved, and the separation and enrichment of strategic metal oxide minerals such as copper, iron, tin, tungsten, titanium and rare earth are improved.

This utility model relates to the field of cable production technology and discloses a correction mold for longitudinally wrapped copper strip welding wire of magnesium oxide mineral insulated cable. It includes a fixed base, a fixed sleeve on the fixed base, a mold sleeve above the fixed base and located inside the fixed sleeve, and a mold core inside the mold sleeve. A limiting hole is formed in the center of the fixed base. A mold inlet is formed above the mold sleeve, and a mold outlet is formed below the mold sleeve, with the mold inlet and outlet penetrating each other. A feed port is formed above the mold core, and a discharge port is formed below the mold core, with the feed port and discharge port penetrating each other. A threaded hole is formed on the fixed sleeve, and a correction bolt is formed inside the threaded hole to change the position of the mold sleeve on the fixed base, facilitating the calibration of the longitudinally wrapped copper strip position and quickly solving the problem of misalignment during installation between copper rods and copper tubes.

This invention discloses a method and apparatus for preparing a soil pollution remediation engineering catalyst, specifically belonging to the field of soil remediation technology. The soil pollution remediation engineering catalyst is a modified zinc-iron oxide mineral piezoelectric material, mainly composed of multilayer magnetically responsive zinc-iron oxide nanoblocks supported on brominated polyhydroxy magnesium phosphate foam. The preparation method includes the preparation of multilayer magnetically responsive zinc-iron oxide nanoblocks, the preparation of brominated polyhydroxy magnesium phosphate foam, and the preparation of the modified zinc-iron oxide mineral piezoelectric material. The application apparatus of this soil pollution remediation engineering catalyst includes an electromagnetic-piezoelectric catalytic system and a piezoelectric catalytic auxiliary system. The modified zinc-iron oxide mineral piezoelectric material is forced to deform by magnetic force and the mechanical force generated by mixing, thereby activating persulfate degradation of pollutants in the soil. This invention features high treatment efficiency, low energy consumption, and environmental friendliness, providing a novel remediation method for soil remediation.

The invention relates to an efficient activating and intensifying collecting flotation method for silicate type zinc oxide ore, and belongs to the technical field of mineral processing. Aiming at the low-grade silicate type zinc oxide ore, a composite activating agent composed of inorganic ammonium salt and sodium ethylene diamine tetracetate is adopted for implementing efficient activating treatment on the surface of the silicate type zinc oxide ore, so that the surface activity of the target ore is improved; octyl hydroximic acid, potassium dodecyl phosphate and amyl xanthate are selected to form a multi-component collecting agent, and the activated silicate type zinc oxide minerals are selectively and intensively collected, so that efficient flotation of the silicate type zinc oxide minerals is achieved. According to the method, the zinc oxide minerals can be efficiently activated and selectively collected, high-concentration sodium sulfide is not needed for vulcanization, the flotation effect is good, and the problem that foam is difficult to eliminate through a vulcanization-amine flotation method of the refractory silicate type zinc oxide minerals can be solved.

The invention is a method of metal extraction using reductive electro-bioleaching of oxide minerals. This method of mineral treatment allows non-acidophilic soil bacterial consortia consisting of metal-reducing microorganisms growing at neutral pH to reduce the metal oxide mineral selectively, in the presence of controlled redox potentials at which the organism efficiently reduces the oxide minerals. The described reactor arrangement simultaneously allows precise anaerobic conditions and optimal agitation, enabling microbially assisted efficient electroreduction of oxide minerals. The invention is a scalable and cost-effective method of extraction of critical metals from their oxide forms and minerals.

The present application relates to a kind of short process step-by-step separation method of sulfur oxygen mixed zinc ore, belong to mineral processing technical field.The present application sulfur oxygen mixed zinc ore is finely treated, adds multi-metal activator to target activation of zinc sulfide mineral in ore, then the activated zinc sulfide mineral is preferentially recovered by flotation machine, and zinc sulfide concentrate is obtained;In zinc sulfide flotation tailings, add combination regulator and combination collector to carry out synergistic slurry conditioning and bubble control, then adopt flotation column to carry out rapid and efficient recovery of zinc oxide mineral in ore, and high-quality zinc oxide concentrate can be obtained by using only once roughing.The present application is based on the occurrence characteristics of zinc mineral in ore to formulate target reagent system, by using flotation machine and flotation column in combination, realize the short process step-by-step recovery of zinc sulfide and oxide in sulfur oxygen mixed zinc ore, solve the technical problem that zinc sulfide and oxide in sulfur oxygen mixed zinc ore are difficult to be efficiently recovered when coexisting in ore, improve the comprehensive utilization rate of complex and difficult to handle zinc ore resources.

The invention discloses a dechlorination and copper removal process for zinc hydrometallurgy in the field of metal hydrometallurgy. The dechlorination and copper removal process comprises the following steps: 1) dechlorination of a neutral leaching solution: feeding the neutral leaching solution obtained by neutral leaching and filter pressing of secondary zinc oxide mineral powder into a dechlorination tank, adding copper removal slag, replacement slag and a copper sulfate solution, adjusting the pH value of a system to 2-2.5, heating to 60-70 DEG C, and stirring for 30-50 minutes; after the content of the solution is detected to be less than 0.5 g / L, carrying out rapid filter pressing, feeding a dechlorination solution into a copper removal tank, and feeding dechlorination residues into a regeneration tank; (2) copper removal through the dechlorination liquid: zinc powder is added into the dechlorination liquid in the copper removal tank in batches, the pH value of the system is adjusted to 4-4.5, and stirring is conducted for 30-40 min; and after detecting that the content of the solution is less than 0.1 g / L, carrying out filter pressing, feeding the copper-removed solution into an iron removal station, and returning the copper-removed slag to the dechlorination tank in the step 1). The production cost is reduced through material internal circulation (copper source cyclic utilization), the impurity removal efficiency reaches the standard, no waste water is discharged, by-products are recycled, and the method is suitable for low-grade zinc raw material wet smelting.

The present application relates to a kind of limestone type zinc oxide ore recovery method based on machine column combined flotation, belong to mineral processing technical field.For limestone type zinc oxide ore using traditional process, there are large reagent consumption, low flotation efficiency, long process flow, poor separation effect and other problems, the present application is based on the linkage of flotation equipment and flotation reagent, by new reagent to the selective hydrophobicity of zinc oxide mineral in ore, using flotation column to carry out two roughing, without cleaning can be fully recycled, then using flotation machine to the zinc rough concentrate is once cleaned and can obtain high-quality zinc oxide concentrate.The compound modifier developed in the present application can effectively control the pulp environment and particle surface properties, the compound collector can enhance the hydrophobicity difference of zinc oxide mineral and gangue particles, so that zinc mineral is in long-term stable contact with bubble in flotation column, the obtained rough concentrate is used to quickly output zinc concentrate using flotation machine, so as to realize short process high-efficiency recovery of limestone type zinc oxide ore.

This invention discloses a method for preparing and flotating gypsum-containing zinc oxide ore, comprising the following steps: grinding the raw ore finely, sequentially adding a high-molecular-weight calcium ion chelating agent, sodium carbonate, and sodium sulfide to prepare the slurry, and finally adding a collector to perform zinc oxide mineral flotation to obtain zinc oxide rough concentrate. This invention overcomes the influence of soluble salt mineral gypsum, has strong adaptability, is simple to apply, and is convenient for large-scale production management, enabling efficient flotation recovery of this type of zinc resource.