171results about How to "Reduce stockpiles" patented technology

The invention relates to a method for extracting germanium from chlorination distillation slag. The method comprises the following processes: primary alkaline leaching, secondary alkaline leaching, desiliconization, the alkaline leaching of silica residue, germanium precipitation, drying and ignition, chlorination and distillation, and the like. The germanium leaching efficiency is above 85 percent, the desiliconization rate is above 95 percent, the germanium precipitation rate is above 95 percent, and the recovery rate of germanium is above 70 percent. The method for extracting the germanium can annually process more than 2,000 tons of chlorination slag, recover more than 1 ton of germanium (by Ge in GeCl4), and obtain 4.5 million RMB of profit payment and tax turnover. The method solves the problems of the silicon germanium separation in alkaline liquid, germanium precipitation technology, and the like. The method opens up a reasonable path to extract the germanium from the chlorination distillation slag, reduces the piling amount of the waste slag, reasonably utilizes the resources, reduces the working time, and indirectly reduces the production cost. The cost of germanium precipitation is reduced from 695 RMB/kg Ge which is the cost of germanium precipitation through the prior tannin extract (high price) to 370 RMB/kg Ge.

The invention relates to a liquid alkali roasting decomposition extraction process of mixed rare earth concentrates, which comprises the following steps of: (1) mixing mixed rare earth concentrates and sodium hydroxide (prepared solution) in the weight ratio of 1:0.5 to 1.5; (2) roasting the rare earth ore mixed with the sodium hydroxide at the roasting temperature of between 150 and 500 DEG C for 0.5 to 4 hours; (3) performing size mixing on roasted ore hot water obtained by roasting, adding oxidant simultaneously for oxidation, and performing washing until the mixture is neutral after the oxidation; (4) dissolving trivalent rare earth preferentially in washed alkali cakes in hydrochloric acid, and controlling the pH value to be between 4 and 5 to prepare rare earth chloride solution with less cerium; and (5) performing reductive dissolution of the hydrochloric acid on cerium dregs dissolved preferentially in the hydrochloric acid, and controlling the pH value to be between 4 and 5 to prepare cerium-rich chloride solution. The mixed rare earth concentrates are processed by adopting the extraction process, so that the continuous production of the alkali-decomposing mixed rare earth ore can be realized, cerium-rich products are extracted preferentially, the treatment capacity of the follow-up extraction separation is relieved, and the pollution-free production and comprehensive utilization of resources are realized.

The invention relates to low-expansion microcrystalline glass which takes spodumene tailings as a main raw material and a manufacturing method thereof. The raw materials of the low-expansion microcrystalline glass comprise alumina and lithium carbonate. The low-expansion microcrystalline glass is characterized in that the mixing proportion of the compositions by weight percentage is as follows: the content of the spodumene tailings which are taken as the main raw materials is between 70 and 80, the content of the alumina is between 9 and 14, and the content of the lithium carbonate is between 5 and 10; the sum of the addition of four compositions of zinc oxide, barium carbonate, a boric acid and magnesia is between 2 and 5; the sum of the addition of titanium oxide and zirconia is between 3 and 5; and quartz sand can replace partial spodumene tailings. The invention solves the problem of manufacturing the low-expansion microcrystalline glass by utilization of a large quantity of waste spodumene tailings, and the low-expansion microcrystalline glass has the characteristics of reducing environmental pollution, improving the product performance and reducing the production cost.

The invention discloses a method for recovering tantalum-niobium, lepidolite and feldspar powder by utilizing difficult-to-treat mine solid waste. The method is characterized in that the difficult-to-treat mine solid waste is taken as a raw material, wherein the difficult-to-treat mine solid waste is a valuable component material containing a trace of (Ta, Nb)2O5, lepidolite and feldspar, and themethod comprises the step of recovering the tantalum-niobium concentrate, the feldspar powder and the lepidolite, recovering of the tantalum-niobium concentrate is achieved though the following steps,the series-connection technology of weak magnetism, medium magnetism and strong magnetism is carried out on the difficult-to-treat mine solid waste raw material for separation of iron slag, magneticminerals and non-magnetic mineral so that the influence of iron minerals on the reselection of the tantalum-niobium ore can be eliminated, a tantalum-niobium ore waste stone raw material is obtained,the tantalum-niobium ore waste stone raw material undergoes classification by adopting a stage grinding-stage separation process method, coarse grains enter a ball mill for ore grinding, a high-frequency vibration fine sieve is adopted for carrying out intensifying classification on the fine fraction, and then the tantalum-niobium concentrate and the feldspar-lepidolite mixture with tailings beingiron-tantalum-niobium contained weak-magnetic impurities are prepared. The method has the advantages that the technology is simple, the efficiency is high, the economic and technical benefits are obvious, and the recovery rate of the tantalum-niobium and other mineral resource products is high.

The invention discloses a selective zinc oxide leaching and weak acidic zinc sulfide flotation smelting and selection combining process. For oxygen and sulfide mixed lead zinc ore, a zinc wet-method smelting process and a zinc flotation process are combined, zinc oxide in the ore is partially and selectively leached out by the first wet-method smelting process, and then zinc sulfide in the ore is floated out by the flotation process. In order to overcome the difficulty in treating the oxygen and sulfide mixed lead zinc ore, the invention provides the smelting and selection combining process which is short in process flow, reliable in technology, easy to operate and control, relatively low in material consumption and energy consumption for production, high in metal reclaiming efficiency, relatively good in economic benefit and high in practicability, the recovery of lead and zinc in the low-grade complex difficultly-selected oxygen and sulfide mixed lead zinc ore can be greatly improved, and the total recovery of lead and zinc can be up to over 90 percent.

The invention discloses a method for manufacturing black microcrystalline glass plates from molybdenum tailings, which comprises the following steps: mixing a certain part by weight of molybdenum tailings, quartz sand, lime stone, sodium carbonate, zinc oxide, barium carbonate, ferric oxide, manganese dioxide, nickel oxide and cobalt oxide to prepare a glass batch; melting the glass batch into molten glass, and then, pouring the molten glass into water to form glass particles; horizontally laying the glass particles in a fire-resistant mold for crystallization heat treatment; and grinding and cutting black microcrystalline glass crude products after crystallization heat treatment to form finished products. By using the molybdenum tailings for manufacturing black microcrystalline glass plates, the invention not only reduces the stockpiling amount of tailings and relieves the environmental pollution, but also can improve the product performance and reduce the production cost, thereby having good social benefit and economic benefit.

The invention discloses a bauxite comprehensive utilization method, relates to an alumina production method and iron-containing mineral utilization and especially relates to a low-grade high-iron bauxite comprehensive utilization method. The bauxite comprehensive utilization method comprises the following steps of 1, grinding bauxite into mineral powder, 2, roasting the mineral powder in a reduction atmosphere, 3, carrying out magnetic separation on the roasted mineral powder to obtain iron concentrate and aluminum concentrate, 4, carrying out desilicication treatment on the aluminum concentrate by an alkali liquid to obtain silicon-free aluminum concentrate and a sodium silicate-containing alkali liquid, 5, adding lime into the sodium silicate-containing alkali liquid, carrying out regeneration treatment, carrying out solid-liquid separation and recycling the regenerated alkali liquid, washing the silicon-free dregs by water, and drying the silicon-free dregs to obtain a wollastonite product, and 6, dissolving the silicon-free aluminum concentrate by a Bayer process so that alumina is produced. The bauxite comprehensive utilization method greatly reduces alkali loss of alumina production. Wollastonite as a silicon-removal by-product and iron concentrate obtained by magnetic separation iron-removal can be sold as products and thus high economic and environmental benefits are obtained.

The invention relates to a green glass-ceramic plate made from lead-zinc smelting slag and a manufacturing method thereof. The glass raw material is prepared from the following components in parts by weight: 40 to 60 parts of lead-zinc smelting slag, 26 to 38 parts of quartz, 15 to 24 parts of lithium feldspar, 2 to 4 parts of soda ash, 2 to 3 parts of zinc oxide, 2 to 5 parts of barium carbonate, 1 to 3 parts of borax, 2 to 2.5 parts of chromium oxide, 0 to 0.2 part of copper oxide and 0.04 to 0.2 part of carbon powder. The invention is not only in line with the common glass-ceramic produced by completely adopting industrial materials on the aspect of the performance, but also can realize waste utilization, reduce the environmental pollution, the product cost and the melting temperature of glass, improve the melting speed and the melting furnace efficiency of the glass, decrease the energy consumption and can be widely applied to building decoration materials, especially applied in various building decoration engineering, such as inside and outer walls, floors, pillars, table boards of the building, and the like.

The invention discloses an ecological restoration matrix of a lead-zinc tailing reservoir. The matrix comprises, by mass, 45-55 parts of tailing reservoir tailings, 20-30 parts of organic matter and 25-35 parts of tailing conditioning agents; the organic matter comprises 20-33 parts of city watercourse sediment, 25-40 parts of mineralized refuse and 33-50 parts of agricultural waste; the tailing conditioning agents comprise 28.6-40 parts of water-retaining agents, 16.7-28.6 parts of adhesives and 40-50 parts of chelating agents; the tailing reservoir tailings are dry beach sediment formed after the surface of the lead-zinc tailing reservoir is dried, and the particle diameter is 0.07-0.15 mm; the city watercourse sediment is products fermented by high temperature composting through a municipal sewage plant, and the water ratio is 30-40 percent; the mineralized refuse is products screened and fermented by the municipal sewage plant; the agricultural waste is smashed until the particle diameter is below 1 cm, and decomposition is performed by adding decomposition agents and water. According to the ecological restoration matrix of the lead-zinc tailing reservoir and a preparation method and application thereof, the rapid ecological restoration of the lead-zinc tailing reservoir is achieved through an ecological restoration technology, therefore, the environmental pollution of the tailing reservoir to surrounding soil can be governed, and the dwelling and living environment of neighboring residents can be improved.

The invention discloses a system and a method for converting steel slag into renewable resources. The system comprises a steel slag powdering system, a steel slag separating system and a tail slag deep processing system, wherein the steel slag powdering system comprises desulphurization slag equipment, converter slag equipment, casting residue equipment and granulation self-extracting equipment which is communicated with the desulphurization slag equipment, the converter slag equipment and the casting residue equipment respectively; the steel slag separating system is connected with the granulation self-extracting equipment and comprises overturn vibration equipment, a magnetic separator, a crushing machine, a rod mill, screening/magnetic separation equipment and material storage equipment, wherein the overturn vibration equipment, the magnetic separator, the crushing machine, the rod mill, and the screening/magnetic separation equipment are led to the material storage equipment; the tail slag deep processing system is connected with a fine tail slag device and comprises a drying mechanism, a coarse grinding mechanism, a fine grinding mechanism, a first winnowing mechanism, a second winnowing mechanism, a first magnetic separation mechanism, a second magnetic separation mechanism and a steel slag fine powder groove. By the combination of the structures of the system, the design construction of the system for converting the steel slag into the renewable resources, which is clean and environment-friendly and reduces occupation space, is realized.

The invention relates to a black micro-crystal glass plate manufactured from lead-zinc-copper tailings, which is manufactured from the following raw materials in parts by weight: 60-90 parts of lead-zinc-copper tailings, 5-10 parts of quartz sand, 8-20 parts of calcite, 3-7 parts of nepheline, 2-4 parts of soda, 1-6 parts of zinc oxide, 2-8 parts of barium carbonate, 2-5 parts of borax, 2-6 parts of sodium nitrate and 0.1-0.5 part of cobalt oxide. The manufacturing method of the black micro-crystal glass plate comprises the following steps: grinding the lead-zinc-copper tailings, the quartz sand, the calcite and the nepheline into powder; removing cyanides from the lead-zinc-copper tailings by using an ion exchange method; weighing in proportion and preparing into a mixture; melting at 1250 DEG C-1350 DEG C; pouring the mixture into water for water quenching to obtain glass particles; horizontally laying the glass particles into a fire-resistant mold for crystallization treatment; and grinding and cutting black micro-crystal glass samples. The invention can relieve the harm of the tailings to the environment, reduce the cost of raw materials, and improve the product quality.

The invention discloses equipment for producing a bonding wire for packaging a semiconductor, which comprises a wire releasing device, a wire-drawing machine, a quenching and tempering device and a take-up device, wherein a metal wire in the wire releasing device is sent to the wire-drawing machine through a leading mechanism; the wire-drawing machine is arranged on one side of a wire outlet of the wire releasing device and comprises a wire-drawing component; the metal wire led out of the leading mechanism of the wire releasing device is connected to a wire-drawing component capable of gradually drawing the outer diameter of the metal wire small; the quenching and tempering device is arranged on one side of a wire outlet of the wire-drawing machine and comprises a wire sending device, a washing device, a coating device, an annealing device and a roasting oven; a thin metal wire conforming to specifications and pulling out of the wire-drawing machine is sent to the washing device through the wire sending device; the washed metal wire enters the annealing device for annealing; the annealed metal wire enters the coating device for coating; the coated metal wire enters the roasting oven for drying and then enters a cooling device for cooling; the wire take-up device is provided with a wire containing tray for collecting a finished wire, and the wire containing tray is connected with a driving device and driven by the driving device.

The invention provides a method for extracting alumina from fly ash. According to the mol ratio of CaO to SiO2 being 0.3 to 1.5 and the liquid-to-solid ratio being 5ml/g to 50ml/g, quick lime, fly ash and water ingredients are mixed; 5g/L to 100g/L of NaOH is added for regulating the pH value of slurry; the reaction is performed for 0.5h to 12h in a high-pressure sealed container with the temperature being 120 DEG C to 260 DEG C; through solid-liquid separation, digestion solution containing sodium metaaluminate as main ingredients and digestion slag containing tobermorite as main ingredients are obtained; then, CO2 gas with the volume concentration being 10 percent to 100 percent is introduced into the digestion solution; along with the reduction of the pH of the solution, aluminum oxide compounds are separated out in a crystal form; when the pH is 9.5 to 8.0, the gas introduction is completed; then, through the solid-liquid separation operation, crystals containing the dawsonite as the main ingredients are obtained. The method has the advantages that the low-cost recovery and utilization on aluminum resources in the fly ash can be realized; the obtained dawsonite can be used for producing aluminum salt chemical products, or can be used for producing metallurgy grade aluminum oxide and the like after being purified; the obtained tobermorite is used as ingredients for producing cement and concrete, and the product intensity can be improved.

The present invention discloses an olive leaf food with health-care function its preparation method and use. Said food not only comprises olive leaf 10-100 weight portions, but also comprises ginkgo leaf 5-50 weight portions of ginkgo leaf extract. Said product possesses several health-care functions of raising immunity of human body, resisting thrombosis, curing hypertension and arteriosclerosis, reducing blood sugar, delaying senility, preventing cancer, resisting cancer and regulating internal secretion, etc. and has no toxic side effect.

The invention discloses a method utilizing waste gypsum slag to manufacture a green microcrystalline glass plate material. The method includes the following steps: the waste gypsum slag, quartz sand, petalite, soda ash, zinc oxide, barium carbonate, chromic oxide, copper oxide and carbon powder are mixed together according to certain parts by weight to prepare a glass batch mixture; the glass batch mixture is molten into liquid glass; the liquid glass is poured into water to obtain glass particles; the glass particles are laid in a fireproof mould to carry out crystallization heat treatment; finally, the rough green microcrystalline glass is ground and cut after the crystallization heat treatment so as to obtain the finished glass. The method in the invention utilizes the waste gypsum slag to manufacture the green microcrystalline glass plate material, which not only reduces the stacking quantity of industrial waste slag and lessens environmental pollution, but also improves the product performance and reduces the production cost. Therefore, the method in the invention has good social and economic benefits.

The invention discloses a copper mine raffinate treatment method. The copper mine raffinate treatment method includes steps: (1) adding iron powder into copper mine raffinate to realize copper recovery and acquisition of iron-containing waste liquid; (2) adding sodium hydrosulfide or sodium sulfide into the iron-containing waste liquid to realize deep removal of harmful elements and acquisition of aftertreatment liquid; (3) adding aluminium hydroxide, calcium hydroxide or sodium hydroxide into the aftertreatment liquid to realize catalytic oxidation, hydrolysis and polymerization to obtain an oxidation product; (4) subjecting the oxidation product to ageing, and drying to obtain a qualified solid polymeric ferric sulfate product. The iron powder is taken as a raw material for copper recovery pretreatment of the raffinate, then the sodium sulfide or the sodium hydrosulfide is added for deeply removing the harmful elements such as copper, arsenic, cadmium and chromium, and the treated iron-containing liquid is subjected to catalytic oxidation, hydrolysis, polymerization and ageing to obtain the qualified polymeric ferric sulfate which is a water treatment agent.

The invention relates to a concentration and dehydration process of very fine tailings. The process is characterized by comprising the following steps: (1) stirring and slurrying the tailings ore pulpto obtain suspended ore pulp; (2) carrying out slag separation on the slurried ore pulp to remove impurities; (3) preparing a flocculating agent and adding into the ore pulp subjected to slag separation, and evenly stirring and mixing twice; (4) mixing the flocculating agent with and the ore pulp, and concentrating the ore pulp by using a high-efficiency thickener; (5) conveying the concentratedunderflow to a filter press for carrying out pressure filtration, and overflowing and clarifying to enable the effluent to be used as industrial circulating water. After the scheme is adopted, the water content of the tailings is greatly reduced; a filter cake is good in looseness, does not need to be scattered, does not stick to a bucket when being shoveled by a forklift, does not stick to a truck bed when being transported by a truck and unloaded, and does not drip and leak in transit; furthermore, the concentration and dehydration process meets the quality requirements of an iron correctorused in cement industry, and increases the utilization rate of tailings resources.

A method for recovering germanium from germanium extraction residues relates to the technical field of wet process metallurgy, in particular to a method for extracting germanium for a second time from distillation residues after germanium extraction by wet process treatment. The method is implemented by the following technical steps: washing of germanium extraction residues for deacidification, heating pretreatment of sodium hydroxide, solution treatment by concentrated alkali, sodium chlorate oxidation and hydrochloric acid distillation to separate germanium, and preparation of germanium dioxide and the like. The method is used for recovering germanium from germanium extraction residues and germanium tetrachloride at the rate up to over 75%. The successful research of the germanium extraction technology has actually positive significance in high-efficiency recovery of germanium in the residues, full utilization of rare germanium resource, reduction of residue pileup, environmental protection and other aspects.

The invention provides a method for recycling mine acid wastewater. The method comprises the following steps: vulcanization for copper deposition: injecting a sodium sulfide or sodium sulfhydrate solution into acid wastewater containing copper and iron to perform copper deposition reaction for 0.5-1.5h, performing solid-liquid separation to obtain clear liquid containing iron and underflow containing copper sulfide slag, and performing press filtration on the underflow containing copper sulfide slag by a plate and frame filter press to obtain a copper concentrate product and waste liquid containing ferrous iron; aeration for iron deposition: adding sodium hydroxide or potassium hydroxide to the clear liquid containing iron to perform aeration for iron deposition, and performing solid-liquid separation to obtain ferric hydroxide or a ferrous iron product and residual liquid; high-temperature calcination: performing high-temperature calcination on the ferric hydroxide or the ferrous ironproduct to obtain a high-temperature calcination product; and washing, drying and grinding: washing, drying and grinding the high-temperature calcination product to obtain a high-purity iron red product. The method provided by the invention is simple in process and low in equipment investment, is capable of performing harmless treatment on acid wastewater and capable of recovering copper concentrate and high-purity iron red products, reduces the accumulation of solid wastes in mines, increases the resource utilization rate, is beneficial to sustainable and healthy development of the mines, and is suitable for application in the hydrometallurgical industry.