78 results about "Zinc products" patented technology

The invention provides a preparation method of high purity zinc by vacuum distillation, which includes: subjecting zinc material to acid leaching, washing and drying in a distillation furnace, filling a graphite crucible with the zinc material, subjecting the zinc material to vacuum distillation, discharging high purity zinc, and processing high purity zinc products. The preparation method using the zinc material to produce high purity zinc has the advantages that equipment is simple, operation is easy, separation is effective, process conditions are easy to control and impurity index is low, and is applicable to using zinc materials to produce high purity zinc.

The invention provides a processing method for purified cobalt residues of zinc and manganese hydrometallurgy. The method comprises the following steps that (1) water or a mixture of water and sulfuric acid or a mixture of water and leaching liquid obtained in the step (2) is added into the purified cobalt residues, and the liquid-solid mass ratio is adjusted to be 2-8: 1; and (2) reaction is conducted for 1-8 hours under the atmosphere that the oxygen pressure is 1-2 MPa and the temperature is 110-180 DEG C, and the leaching liquid is obtained. The purified cobalt residues are obtained by purifying zinc and manganese leaching liquid through special reagents, and the special reagents comprise at least one of xanthate, beta-naphthol, sodium dimethyl dithiocarbamate, ziram, SDD and naphthenic acid. The cobalt residues with the high cobalt content have the good processing capacity, and the cobalt rate is as high as 99.95%. The process is simple, the cost is low, and no poisonous gas is generated; and cobalt, zinc, nickel and zinc products can be prepared, and the leached residues mainly comprise carbon and have very high utilization value.

A method of production of Zinc dust, which includes melting Zinc products in a melting furnace on a semi-continuous basis, transferring at least a part of the molten Zinc products to a vaporizing furnace, vaporizing the molten Zinc in the vaporizing furnace into Zinc vapour on a substantially continuous basis, transferring Zinc vapour from the vaporizing furnace to a condenser, and condensing the Zinc vapour to form Zinc dust and cycling the Zinc vapour in the condenser and making the Zinc vapour pass through a cyclone type cooler. A Zinc dust production device includes a vertical crucible melting furnace (12), a vertical crucible vaporizing furnace (14), a condenser (18) in fluid flow communication with the vaporizing furnace for receiving Zinc vapour into the condenser, wherein the condenser is provided with a heat exchanger in the form of a vapour cycle system (58).

The invention discloses a method for extracting valuable metal from seabed multi-metal sulfide mineral coupling complex ore. The method comprises the steps of obtaining leaching liquid containing copper and zinc and leaching slag containing sulfur, gold and silver through catalysis, oxidation and leaching; exacting copper products and zinc products out of the leaching liquid, and exacting sulfur products, gold products and silver products out of the leaching slag. By means of the method, valuable elements including copper, zinc, gold, silver and sulfur in the seabed multi-metal sulfide mineral coupling complex ore can be recycled comprehensively, the method has the advantages that the multipurpose utilization rate is high, the recycling rate is high, the process is simple, the cleanliness is achieved, and energy is saved, and the method is effective in processing new resources in the seabed multi-metal sulfide mineral coupling complex ore.

The invention discloses a method for extracting zinc from blast furnace gas mud. The method comprises the steps of drying the gas mud to obtain gas ash, placing screened gas ash in a shaft furnace, introducing nitrogen to the shaft furnace for protection, and heating the shaft furnace to a temperature between 1050 DEG C and 1200 DEG C from room temperature; conducting reduction reaction to obtain gas containing zinc; introducing the gas to a sedimentation chamber for dust removal; obtaining polymorphic zinc mixed gas, and introducing the mixed gas to a coiled cooling pipe to be cooled so that a crude zinc product can be obtained. Through self-reduction reaction of fixed carbon contained in the gas mud at the temperature of 1050-1200 DEG C, the number of procedures is reduced, the gas mud processing cycle is shortened, and production cost is reduced; meanwhile, the requirement for the amount of reduction carbon and heating carbon required by reducing zinc in the gas mud can be met, complete reduction of zinc in the gas mud is guaranteed, and then harm to iron making equipment and iron production caused by zinc existing during gas mud recycling is greatly relieved.

The invention relates to an anti-corrosive alloy coating for a power transmission tower and a fastener and a preparation process of the anti-corrosive alloy coating. The anti-corrosive alloy coating is prepared by pickling, aided plating, drying, hot dipping, air cooling and other technological processes. The coating comprises the following components: 0.01 to 2.5% of Al, 0.01 to 0.5% of Mg, 0.06 to 2% of Re, 0.02 to 1.5% of Cu, 0.05 to 0.3% of Cr, 0.005 to 0.01% of Nb, 0.005 to 0.01% of Ni, 0.002 to 0.06% of B, and the balance of Zn. The alloy coating is used for prolonging the anticorrosive lifetimes of steel for the power transmission tower and the fastener under a complex salt-spray environment, and prolonging the anticorrosive lifetimes more than 10 times that of an industrial hot galvanizing pure-zinc product on the premise that the thickness of the coating is not increased.

The invention belongs to the technical field of the surface treatment of a metal material, and relates to a preparation method of a zinc anode oxidation film layer. The method comprises the following steps of: firstly polishing a substrate through a piece of silicon carbide (SiC) abrasive paper, then ultrasonically washing the surface of the substrate by using the acetone, ethanol and deionized water sequentially, and packaging the substrate with sealing glue to form a square substrate zinc surface; adding cerium chloride, hydrochloric acid, boric acid and citric acid into the distilled water, adequately stirring until all solid substances are dissolved, and adding ethyl orthosilicate to ensure that all substances are adequately dissolved to obtain a prepared electrolyte; and depositing the oxidation film layer on the substrate zinc surface by adopting an anode electro-oxidation technology with the processed substrate as an anode, a platinum niobium wire as a cathode and a saturated calomel electrode as a reference electrode, thus forming the zinc anode oxidation film layer. The preparation process is simple, the cost is low, convenience in operation can be achieved, the repeatability is good, no large-sized expensive equipment is needed, and the prepared film layer can be used for the surface treatment of zinc products or different zinc-coated products.

The invention relates to a smelting method of a high-iron multi-metal zinc concentrate. The method comprises the following steps: performing oxygen-enrichment oxidation melting on a zinc concentrate containing 14% to 20% of Fe, 0.03% to 0.10% of In, 0.2% to 0.6% of Cu, 0.2% to 0.6% of Cd, 0.005% to 0.02% of Ag, 0.1% to 0.2% of Sn and 40% to 50% of Zn so as to generate an oxidized flue gas and molten slags; preparing the oxidized flue gas into sulfuric acid; performing reduction smelting on the molten slags in a smelting pool so as to generate a crude zinc alloy, crude copper containing silver and slags; blowing the slags so as to obtain smoke dust and blown slags; returning the smoke dust to be subjected to reduction smelting; selling the blown slags in a market; extracting the copper and the silver from the crude copper containing silver; and performing four-stage distillation on the crude zinc alloy entering an electric-heating graphite vacuum furnace so as to generate a pyrogenic distilled zinc product, a crude cadmium product and a high-indium-tin zinc alloy which is used for extracting indium and tin. The method is reasonable in process, good in comprehensive recovery, high in production efficiency, low in production cost and clean and environmentally friendly in production process.

The invention relates to a technology to deprive chlorine from zinc electrolytic solution by silver hydroxide. It includes the following steps: using zinc oxide as raw material to form zinc sulfate leach solution that contains chlorine over 200mg/L, adding silver hydroxide into the solution, whisking for 30 minutes, after qualifying, filtering the solution, and the filtrate could be used to produce deposition zinc product, the leached residue is silver oxide that could be recycled.

The invention aims to provide a method for preparing tannin chelate zinc feed additive. The method has simple production process and low cost, and the feed additive has remarkable effect of preventing and treating diarrhea of piglets. The preparation method mainly comprises the following steps of: preparing tannin solution, preparing zinc acetate solution, and mixing the tannin solution and the zinc acetate solution to prepare a tannin chelate zinc product. The yield of the tannin chelate zinc prepared by the method is high and is about 57.9 to 58.9 percent, wherein the chelate zinc reaches 24 percent. Besides the intestine astringing and diarrhea relieving effects of tannin, the prepared tannin chelate zinc can meet the requirement of animals on trace element zinc. Therefore, the feed additive can effectively prevent and treat diarrhea of the piglets and promote the growth of animals.

The invention provides a method for treating zinc blast furnace smoke and electric furnace smoke, comprising: treating the zinc smoke by strongly basic NaOH solution to react the Zn, ZnO with the NaOH and generate a soluble compound as a liquid phase; reacting Fe, oxide of the Fe, C, SiO, Al2O3, CaO or the like with the NaOH and staying the reaction product into the solid phase; separating the liquid and the solid via filtering and cleaning, wherein, the solid phase filter cake contains the solid phase filter cake containing Fe, oxide of the Fe, C, SiO, Al2O3, CaO or the like, is recovered into a sinter to reuse; the liquid phase containing the Zn soluble compound is neutralized by H2SO4 to convert the Zn into Zn(OH)2 precipitation, thereby obtaining the Zn(OH)2 filter cake after filtering and cleaning to be used for producing the other zinc product; the filtrate as Na2SO2 solution can be used to recover the Na2SO2.

The invention discloses a method for preparing organic zinc by means of calcium analysis reactive crystallization, which includes: adding terephthalic acid and water and/or filtrate in a reactor, and then adding sodium hydroxide to lead the terephthalic acid to dissolve into terephthalic acid sodium solution, wherein the filtrate is mother solution after centrifugal separation of organic zinc; adding saturated lime milk suspension to enable separation by crystallization of terephthalic acid calcium; adding saturated sodium zincate solution to enable separation by crystallization of terephthalic acid zinc on a terephthalic acid calcium carrier; and centrifuging, wherein filtrate which is sodium hydroxide solution is used for allocation of terephthalic acid sodium solution in next batch, so that an organic zinc product is obtained by rinsing and drying a centrifuged product. By the aid of the method, discharge of waste water containing inorganic salt such as sodium chloride and/or sodium sulfate and the like is avoided, the sodium hydroxide contained in centrifuged mother solution can be used for allocation of the terephthalic acid sodium solution in next batch, and consumption of the sodium hydroxide is reduced.

The invention relates to a technical method for recycling potassium, sodium and zinc from blast furnace bag ash. The raw material of the method is the blast furnace bag ash, and the method aims to realize recycling of potassium, sodium and zinc and cyclic utilization of iron-containing slag in a steel plant. The method comprises the process of recycling potassium and sodium through water washing,the process of reducing and volatilizing zinc and the process of recycling zinc through a wet method. The method specifically includes the steps that after the blast furnace bag ash is subjected to water washing, a filtrate containing potassium chloride and sodium chloride is obtained, and the filtrate saturated with potassium chloride or sodium chloride is purified and subjected to fractional crystallization to obtain KCl and NaCl products; the filtrate not saturated with potassium chloride or sodium chloride is subjected to the water washing step again, after the water washing residues are dried, the water washing residues, a reduction agent and an adhesive are evenly mixed and granulated according to a certain mass ratio, then high-temperature reduction and volatilization of zinc are carried out in a reduction device, and the iron-containing slag is recycled in the steel plant; and zinc-rich dust recycled in a flue gas recycling system is leached, purified and electrolytically deposited to obtain metal zinc products, and electrolyte is recycled in the leaching step. According to the process flow, high-value utilization of the blast furnace bag ash and cyclic utilization of the blast furnace bag ash in the steel plant are simultaneously realized, and energy conservation and emission reduction of steel enterprises are promoted.

The invention discloses a distillation furnace for directly preparing high-purity zinc products from hot galvanizing slag, belonging to a zinc product preparation device in the nonferrous metallurgy industry. The distillation furnace is provided with a melting section, an evaporation section and a rectifying section in turn, wherein the melting section and the evaporation section are arranged horizontally, and the rectifying section is arranged vertically; one end of the melting section is provided with a raw material inlet, the other end of the melting section is communicated with the evaporation section, and the outlet of the evaporation section is communicated with the inlet of a silicon carbide tray arranged in the rectifying sections through a connection channel; and the outlet of the silicon carbide tray is communicated with a condenser on the outside of the furnace body through a zinc vapor duct. The distillation furnace integrates the advantages of the horizontal zinc distillation furnace and the tower type zinc distillation furnace and is suitable for the treatment of zinc-containing high-iron materials such as hot galvanizing slag and hard zinc; and a certain of service life can be ensured and the distillation furnace is suitable for the industrial productions of high-purity zinc powder and zinc ingots.

The invention discloses a vapour phase rust inhibitor VP1-PM special for zinc product and the production method of gas phase rust-preventive packaging material for galvanizing. The said VP1-PM is reaction product of malic Acid with morpholine, has unique gas phase inhibitor action to zinc product. Gas phase rust-preventive paper, gas phase rust-preventive non-woven fabric, framed gas phase rust-preventive paper, framed gas phase rust-preventive non-woven fabric, gas phase rust-preventive plastic film special for galvanizing can apply to long-term seal and temporary rust prevention of all kinds of galvanizing products from galvanizing bolt, screw cap, to heavy galvanizing coiled material, strip and sheet. The said gas phase rust-preventive packaging material for galvanizing has a good effect on rust prevention, long term rust prevention period, which is convenient for usage, and safe.

The invention relates to a zinc powder-free water-based primer. The zinc powder-free water-based primer comprises the following components in parts by weight: 4-6 of lithium silicate, 4-9 of emulsion, 13-17 of ferrophosphorus powder, 13-17 of zinc-iron powder, 7-12 of antirust pigment, 0.4-1 of defoaming agent, 0.4-1 of thickening agent, 0.4-1 of film forming aid, 0.4-1 of anticorrosive aid, 0.4-1 of AMP aid, 1.8-2.3 part of accelerant, 0.4-0.8 of fumed silica and a right amount of deionized water. The zinc powder-free water-based primer has the advantages that the secondary rust removal problem caused by zinc powder is eliminated, and the health hazards on constructors and the pollution on environments are eliminated by using water for replacing an organic solvent. The adhesive force of the zinc powder-free water-based primer is obviously superior to that of an inorganic zinc product under the condition of unsatisfactory surface treatment.

The invention discloses a technology for efficiently and selectively separating zinc in zinc sulfide concentrate. The technology includes the steps that the zinc sulfide concentrate serves as a raw material and is wetly ground, then the wetly-ground concentrate and sulfuric acid or waste electrolyte are mixed into a slurry and poured into a high-pressure kettle for leaching, an adjusting agent A is added, pure oxygen is led in, the proper final acidity is controlled, and most Fe and most As in the zinc sulfide concentrate enter slag in the hematite mode, the iron vitriol mode and the ferric arsenate salt mode. Leached liquid is subjected to acidity regulation to be directly electrolyzed in a rotational flow mode, zinc in the leached liquid is extracted, and an electric zinc product meeting the national standard can be obtained. According to the technology, the traditional purification working procedure is omitted, the technological process and a device are simplified, the technology is simple, operation is easy and convenient, energy consumption is reduced, the leaching rate and the recovery rate of the zinc are increased, resources are saved accordingly, and cost is reduced.

The invention discloses a preparing method of a zinc electrolysis anode plate. The preparing method comprises the following steps that firstly, under low current density, anode oxidization is conducted, and a dense PbO2 protection layer anode plate is obtained; secondly, electroplating of an MnO2 protection layer is conducted on the anode plate; thirdly, by mass percent, 20-30% of an Mn(NO3)2 solution is prepared; and fourthly, a chemical MnO2 deposition layer is generated on the anode plate, the fourth step is repeatedly conducted 2-5 times, and the zinc electrolysis anode plate is obtained.The invention further provides the zinc electrolysis anode plate. The preparing method of the zinc electrolysis anode plate and the zinc electrolysis anode plate have the following beneficial effectsthat an electrolytic zinc product with the extremely low Pb content can be obtained at the beginning of production; the current efficiency is improved, the production intensity is lowered, and the production efficiency is improved; and dissolving of Pb alloy materials is effectively prevented, the service life is longer, and the lead content in product zinc is lower.

The invention relates to a method for absorbing sulfur dioxide in sintering gases by taking blast furnace flue gases as an absorbing agent. The blast furnace flue gas is made into blast furnace pulp by water and washing liquid or filter liquor returned to the filter washing process, the pulp is fully contacted with the sintering gas in sulfur dioxide absorbing equipment, and filled with air for oxidation, and the pH value of the pulp after desulfurization is controlled; the reaction product is filtered and washed, the filter cake containing ferriferous oxide F2O3, FeO and C which do not take part in the reaction, CaSO4 newly generated and the like is taken as an ironmaking material and returns to a sintering machine, the washing liquid and the filter liquor are returned to prepare the blast furnace pulp, and when the concentration of Zn<++> in the filter liquor meets a required value, the filter liquor is taken to be processed into zinc products. The method has the advantages of reducing the emission of sulfur dioxide, separating zinc which causes adverse effects on ironmaking from the blast furnace flue gas, making Fe, C and Zn in the blast furnace flue gas fully utilized, and killing two birds with one stone.

A system and method of preventing surface imperfections of die-cast products with the method comprising the steps of loading a volume of molten zinc from a source of molten zinc into a chamber of a dispenser station, dispensing the molten zinc from the dispenser station through a hot runner and into a mold cavity, continually maintaining the molten zinc in a molten state from the source of molten zinc to the mold cavity, interrupting the flow of the molten zinc to the mold cavity, following the contraction of the molten zinc in the mold cavity as the molten zinc solidifies therein; and removing the solidified die-cast zinc product from the mold cavity.

The invention belongs to the field of metallurgy, and particularly relates to a manufacturing method of a novel electricity-saving anode plate special for copper-zinc electrolysis and electrodeposition. A plate body is a three-layer plate, the middle layer of three layers of anode plates is a copper, aluminum and titanium alloy and titanium coated titanium sheet, one plate serves as the middle layer, lead plates are arranged on the two faces of the outer layer, and three layers of metal plates are overlaid and compounded to be manufactured into the integrated composite anode plate. The above three layers of overlaid metal polar plates are manufactured into the integrated composite anode plate capable of being used in production chains in a long-acting manner through the manufacturing method that through holes are formed in a drilling or punching manner, lead rivets are additionally mounted , and stacking staggered pressing embedded riveting is carried out, and therefore the novel anode plate with the best electrolysis and electrodeposition electricity-saving effect is achieved when copper and zinc products are produced through an electrolysis and electrodeposition method.