960 results about "Dross" patented technology

The invention provides an oily sludge recycling and innocent comprehensive treatment process, which comprises the following four steps of: 1, pretreating oily sludge: adding water into the oil sludge, heating and stirring to form fluidized sludge, and separating in a stainless steel screen; 2, conditioning the oily sludge, adding a demulsifier and a flocculant into the separated fluidized sludge for conditioning the oily sludge; 3, performing centrifugal separation on three phases of the oily sludge: introducing separated oil into an oil-water separation system for recovering crude oil, conveying separated water to the oily sludge pretreatment step for recycling, drying the separated residual oily sludge, and solid impurities and floating slag which are separated in the oily sludge pretreatment, and introducing the dried substances into a rotary kiln incinerator; and 4, performing mixed combustion on the residual oily sludge and biomass, performing high temperature incineration treatment after the residual oily sludge, the separated solid impurities and floating slag, and the biomass are mixed in a rotary kiln to remove the secondary pollution of the oily sludge, and recovering afterheat from high temperature flue gas.

An object is to provide a method capable of boring a borehole even when quartz glass or silicon dioxide is deposited as molten dross by laser irradiation. A laser irradiation position of a workpiece is irradiated with a laser having wavelength of 1.2 μm or longer and a high factor of absorption into liquid, for example, a CO2 laser, from a laser oscillator through liquid. By high pressure generated in an advancing microbubble flow occurring in the liquid, molten dross is scattered. Thus, the processing, such as boring, of the rock is performed.

The invention discloses a water-preserving nutrient soil for indoor flowers, which comprises pond sludge, chaff ash, bean curd dross, Attapulgite clay, alta-mud, quartz sand, potassium permanganate, ferrous sulfate, copper sulfate, sulphur, 45% content of azophoska composite fertilizer and high water absorbent resin.

The invention provides a harmless and comprehensive utilization method of secondary aluminum dross and relates to a harmless and comprehensive utilization method of secondary aluminum dross produced in an aluminum dross treating process. The harmless and comprehensive utilization method is characterized in that slurry is prepared from the secondary aluminum dross produced in the aluminum dross treating process and water, a stirring deamination reaction is performed, and ammonia gas formed through the reaction is condensed or absorbed by water; slurry after the reaction is subjected to liquid-solid separation, separated liquid phase is subjected to evaporative crystallization, and a chlorate and fluoride salt mixture is obtained; separated solid phase is used for producing a calcium aluminate material. With adoption of the method, the aluminum dross can be treated harmlessly, useful components in the aluminum dross are recovered efficiently, the harmless secondary aluminum dross can replace high-alumina bauxite for preparing a calcium aluminate product, production cost is reduced greatly, zero-release utilization of the aluminum dross is realized, the process is simple, the operation is convenient, the cost is low, environmental protection is realized, and the method has wide applicability.

A system prevents oxidation of a laser cut workpiece by utilizing a laser source that utilizes laser source with an inert gas, such as argon or helium, rather than air or oxygen, to create the slots or kerfs which form the pattern cut into the workpiece. The system introduces oxygen gas through the workpiece as it is being laser cut to oxidize any slag or dross created during the laser cutting process. Oxygen or a mixture of oxygen with other gases cools the slag and the workpiece while at the same time oxidizing the slag to either completely burn or partial burn the slag before it strikes an exposed surface of the tubular member.

The invention discloses a silt solidification soil construction technology which comprises the steps of surface cleaning drainage, silt sampling, detection analysis, excavation stacking, stirring and mixing, filling and grinding and stabilized soil maintenance. Through solidification soil in-situ solidification, silt and a curing agent are stirred and mixed to form silt solidification soil, and the curing agent is prepared through expanded graphite, activated carbon, cement, quick lime, gypsum, lignocelluloses, coal ash, granulated blast-furnace slag powder, coal gangue, caustic dross, hydroxypropyl methyl celluloses, furfural residues, medical stone and smectite clay. By means of the silt solidification soil construction technology, original flowing high-water-content low-strength high-compressibility silt is converted into high-compressive-strength excellent-entire-board-performance, good-durability and environment-friendly solidification soil, and the requirement of shallow ground earthwork materials for roads, storage yards, ports, reclamation projects, afforesting and the like can be met.

The invention relates to a method for processing copper dross slag by using a converter, which belongs to the technical field of thermometallurgy. Copper dross slag, calcined soda, scrap iron or sulfurous iron ore and soft coal are proportioned in proportion and then are added into a converter for retailoring. The temperature is controlled within the range of from 700 DEG C to 800 DEG C, the smelting lasts for 1.5 hours to 2 hours, so that lead in the metal form in the copper dross slag is separated from copper; then the temperature is increased to the slag overtemperature of 1100 DEG C to 1250 DEG C, the smelting lasts for 2.5 hours to 3 hours, so that lead compound is deoxygenated to produce metal lead, and the copper becomes copper matte to realize the separation of copper and the lead. The dross slag on the copper matte and the wet lead are fished out to obtain the copper matte and the wet lead. Because the operation process of the invention is carried out in the converter, the separation of copper and lead is more complete. The method can solve the problems of high energy consumption, heavy environmental pollution, low metal recovery ratio, high production cost and the like in the prior copper dross slag processing.

The invention discloses a tin-lead welding strip for a solar photovoltaic assembly, which comprises a copper strip base material, wherein a compact tin-lead alloy layer with a thickness of 3-20 micrometers covers the surface of the copper strip base material. A manufacturing method of the tin-lead welding strip for the solar photovoltaic assembly comprises the step of: covering the compact tin-lead alloy layer on the copper strip base material by adopting an electroplating method, wherein the thickness of the tin-lead alloy layer is 3-20 micrometers. Because the electroplating method is adopted, a cladding material has a crystal lattice characteristic and capacities of enhancing adhesive force of the welding strip and improving the conductivity of the photovoltaic welding strip. The welding strip has a volume resistivity of 0.0185-0.021omega mm<2>/m which is lower than that of the welding strip manufactured through thermal tin immersion and a melting point of 183-190 DEG C lower than that of a lead-free welding strip, and has no abnormal phenomena such as tin knobs, tin dross, copper cuttings, discoloration and the like. A process capability index (CPK) value is effectively increased.

The invention relates to a method for manufacturing a refined high cleanliness Al-Ti-B alloy, comprising the following steps of: (1) melting an aluminum ingot, and adding potassium fluotitanate and potassium fluoborate for alloying; (2) pouring a reaction by-product floating on the surface of aluminum liquid, and neutralizing with alumina powder; (3) raising the temperature of the aluminum liquid, and scattering an alumina powder layer; (4) introducing argon or nitrogen with a pipe so that a residue solution coated in the aluminum liquid floats and is neutralized; (5) measuring the hydrogen content after the solution is treated by utilizing a small bubble rotation and degassing refining technology; (6) scattering a special high temperature anti-oxidation covering agent layer in the hot state of more than 800 DEG C; (7) raising the temperature of the aluminum liquid, introducing the aluminum liquid to a filtering box body filled with an alumina ceramic filter, and carrying out online filtering treatment on the alloy aluminum liquid; and (8) finally, reducing the temperature of the aluminum liquid, discarding scruff scum, and molding by casting to produce Al-Ti-B filaments. The method can effectively separate fluoride salt and other impurities in the Al-Ti-B alloy liquid so that the impurities in an Al-Ti-B alloy refining agent are reduced, and the cleanliness is greatly improved.

The invention belongs to the technical field of metallurgy, and relates to a method for producing lead bullion by means of copper dross side-blown smelting. The method comprises the following steps of: 1) burdening copper dross, sodium carbonate and pyrite according to the proportion of 100:(8-10):(6-8), evenly feeding for 1-2 hours, wherein the feeding temperature is 600-800 DEG C, and evenly blowing anthracite by high-pressure wind; 2) smelting for 1-2 hours at the temperature of 600-800 DEG C after feeding, rising the temperature to 1100-1200 DEG C and smelting for 2-3 hours, and smelting the metallic lead and the chemical combination-state lead in the copper dross into the lead bullion; and 3) stopping blowing the anthracite, separating for 0.5-1 hour in a cleaning way, discharging the lead bullion and the copper matte in a siphon way, opening a slag hole to discharge the slag, and carrying out waste heat recovery and dust collection on the high-temperature smoke to be discharged to the air after the high-temperature smoke reaches the standard. The method takes the anthracite as the fuel or the reducing agent, and the other methods use the coke, the diesel oil or the electric energy, so that the method is more economical and suitable for large-scale production.

The invention discloses a processing method for recycling aluminum dross, which comprises the following steps: adding crushed limestone and catalyst to aluminum dross, thoroughly homogenizing and mixing the three materials, carrying out catalyzed calcination on the thoroughly homogenized and mixed materials in a calcination reaction furnace, and directly grinding the calcined products or grinding the calcined products after cooling, thus obtaining the calcium aluminate powder product. The processing method has a simple operational process, and can not cause new environmental pollution, thereby according with the policy for industry development. The invention recycles the aluminum dross, simultaneously reduces environmental pollution caused by the aluminum dross, improves the environmental management on surrounding areas, and also provides a reasonable and effective way to recycle waste aluminum dross. Thus, the invention has obvious economic benefits and social benefits.

A method for retrieving electrolyte form aluminum electrolysis carbon residue, characterized in that the aluminum electrolysis carbon residue is mixed with calcium fluoride serving as disperser with a weight of 1 to 10 wt. % of the carbon residue, and coal serving as combustion catalyst with a weight of 1 to 10 wt. % of the carbon residue, and then is roasted for 1 to 3 hours under a temperature of 650 to 850 degree C.. The method has the advantages of low process cost, high retrieving rate of electrolyte, easy implementation. The retrieved electrolyte has little impurity, and can be directly and completely returned to the electrolysis cell for use without negative effect to the quality of the electrolyte and aluminum melt.

The invention relates to a device for removing zinc dross in a galvanized wire zinc pot. The device aims at solving the following disadvantages caused due to that the zinc dross in the zinc pot is removed manually at present: as the zinc pot is full of zinc solution, the zinc solution can spill out; the zinc solution can volatilize toxic dust and the temperature is high; therefore, the labor intensity is high, the zinc solution is harmful to human bodies, and potential safety hazards can be incurred. The technical measures of the device are as follows: the device for removing the zinc dross in the galvanized wire zinc pot comprises a supporting post, a guide screw rod connected with the supporting post, a lifting motor, a cantilever structure, a dross scooping mechanism, a PLC controller and a dross pushing mechanism. The device eliminates the potential safety hazards in production, greatly lowers the labor intensity of operating personnel, improves the product quality, lowers the rejection rate and reduces the production cost.

The method for hot dip galvanizing comprises the steps of: dividing a plating vessel holding a molten metal into a plating tank and a dross removing tank; conducting hot dip galvanizing to a steel strip by immersing thereof in the molten metal bath; then transferring the molten metal bath from the plating tank to the dross removing tank; removing a dross from the molten metal bath in the dross removing tank; and recycling the molten metal bath from the dross removing tank to the plating tank through an opening located on the plating tank. The apparatus for galvanizing comprises a plating tank, a dross removing tank, a means to transfer the molten metal bath from the plating tank to the dross removing tank, and an opening located on the plating tank to recycle the molten metal bath from the dross removing tank to the plating tank.

The invention relates to the technical field of tin plating of copper wires, in particular to a circulating tin plating process and device. The circulating tin plating process comprises the following steps of: setting speed and stabilizing speed and tension in a tension buffer area; annealing in a high-temperature annealing area at high temperature; initially cooling in an annealing and cooling area; pre-plating tin in an inlet tin heating area; finally plating tin in an outlet tin heating area; scraping residual tin by using a tin plating mold for sizing; protecting reducing gas to deoxidize liquid tin and protecting a wire rod from being oxidized; cooling a hot plated tin wire with water; scraping water on the tin-plated wire with rubber; scraping water and possible tin beads by using a mold; drying residual water by using a drier; cooling the tin-plated wire to room temperature by using a cooling wind scoop; and rolling into a finished product, and the like. By adopting the circulating tin plating process, the product quality of the tin-plated wire is ensured, use of a soldering flux causing pollution can be avoided, noble rare earth metals are avoided or reduced, a large amount of electric energy is saved, waste of tin dross is reduced, operation is simplified and concealed danger of quality is reduced.

The invention relates to a method of in-situ preparing TiB2 granule strengthening Mg-based composite material in the composite material technical field. The steps are that: powder of K2TiF6, KBF4 and Na3AlF6 are mixed uniformly and then put into a kiln for drying, thus obtaining waterless powder. Aluminum ingot is melted in a resistance furnace with heat preservation and uniformity; the waterless powder after dried is added to the melting Al melt liquid by batch and then is stirred with a graphite disc, and scum on the surface of the melt liquid is removed after stirred and stewed, thus obtaining TiB2-Al intermediate alloy; magnesium alloy is smelted with the protection of SF6 and CO2 mixing gas, and flame retardant element beryllium is added; the TiB2-Al intermediate alloy is added into the magnesium alloy melting solution slowly, stirred, stewed and cast. The technology of the invention is comparatively simple, has low cost, and the density of TiB2/Mg composite material is between 1.8-2.0g/cm<3> and tensile strength thereof is increased by more than 60 percent than base alloy.

The invention relates to a high pure copper and a production method of low-oxidizing bright copper rod, comprising the steps of: performing melting and slag-skimming, poling and crystallisation by cooling to the waste copper crap to obtain the high pure copper; heating the copper to 1080-1120 DEG C to obtain the copper liquid, wherein the infusible high melting point impurities are eliminated by slag-skimming, after that, adding arenaceous quartz and silicon dioxide into the copper liquid and blowing excessive oxygen to convert the metals which are livelier than the copper into the scruff to remove, then pressurizing and blowing the oxygen to the copper liquid so that lead sub-oxide deposited at the bottom of furnace to sufficiently react with the arenaceous quartz to generate the scruff for removing the lead, guaranteeing the purity of the copper is larger than 99.5% and the lead content is less than 2ppm; the production method of low-oxidizing bright copper rod mainly comprises the steps of: taking purple copper crap as the raw material, directly placing the high pure copper liquid through the melting and slag-skimming, poling and crystallisation by cooling orderly into the continuous-casting and continuous-rolling apparatus to cast, the yield of low-oxidizing bright copper rod is larger than 98%, reaching the green environmental standard required by Europe Union ROHS, the production method has low production cost.

The invention relates to recycled high-performance concrete and a preparation method thereof. The recycled high-performance concrete is prepared from recycled coarse aggregates, made from crushed construction waste, as a raw main raw material, and added with natural sand, cement, coal ash, aluminum dross, an admixture, graphene and water in a stirring manner. According to the preparation method, a micropore of a cement-based composite material is filled with a nanometer material, namely graphene, so that the effects of reinforcing, toughening, and reducing the shrinkage are achieved. The aluminum dross produced in the electrolytic aluminum production process is adopted as the admixture; and aluminite powder in the aluminum dross expands in water, so as to play a shrinkage-compensating role. The concrete is small in shrinkage besides good working performance, durability and relatively high strength, and can be widely applied to road engineering, structure engineering and the like.

The invention provides a high-protein microbiological feed and a preparation method of the high-protein microbiological feed. Dross is one of products produced in the process of floating and clarifying the mixed juice during sugar preparing by the sugarcane, and is rich in various organic non-sugar components; the dross is always considered as impurities and mixed in the mud juice by a sugar plant, and finally becomes lime sludge to cause waste. The preparation method provided by the invention comprises the following steps of taking the dross in the crane sugar plant as the raw material, and taking a non-protein nitrogen source, phosphate and magnesium salt and the like as the auxiliary materials; mixing the raw material and the auxiliary materials; sterilizing; adding beneficial zymocyte preparation; and fermenting at the aerobic condition so as to obtain the high-protein microbiological feed. By adopting the preparation method provided by the invention, the problems that a large quantity of dross is in the crane sugar plant and is adhered and hardly processed, and the loss of the sugar is serious can be solved well; and the current situation that the protein feed resources are in a shortage can be relieved. According to the preparation method, the cost is low, the period is short, the production technology is simple, the limitation from the field and equipment is less, and the quality and the yield of the high-protein microbiological feed are high, and the preparation method plays an important role in popularization and application of the mixed juice floating and clarifying technology in sugar plants.

The invention discloses a silt solidification method, which comprises the following steps: weighting raw materials in parts by weight: 100 parts of marine silt, 5-20 parts of caustic dross, 0-5 parts of mineral powder, 5-30 parts of a solidifying agent, wherein the solidifying agent comprises the following raw materials in parts by weight: 10-50 parts of fly ash, 20-80 parts of mineral waste residues and 2-10 parts of a catalyst, the catalyst is selected from a naphthalene-based superplasticizer, an early-strength slushing agent and an antifreezing agent and the like, and the marine silt is obtained by capturing and stockpiling; adding the raw materials into a mixer in part by weight to mix uniformly, thereby obtaining a mixture; and carrying out transportation, compaction, maintenance and detection on the mixture. The method disclosed by the invention can be applied to the filed stirring and solidification of dredger fills, cement injection piles and the like of roadbases, cement stabilization layers, soft-soil foundation reinforced working underlayers and loading layers in municipal, transportation, water conservancy and port engineering. The method disclosed by the invention can save the construction period and save the cost, is rapid in solidification effect and good in effect, and can achieve an effect of environmental protection and economy and reaches the sustainable development of renewable energy sources.

The invention discloses a method for manufacturing cast magnesium alloy, omprising the steps: 1, batching: calculating the percentage of elements including Gd, Y, Zr, and Mg as balance; calculating the weight and the respective batching weight of elements; 2: smelting: adding in sequence Mg, Mg-Gd, Mg-Y and Mg-Zr with Gd, Y and Zr as intermediate alloy; feeding in SF6/CO2 protective gas for refining; dredging up dregs at the bottom of a crucible, then reheating the crucible to 780-800 DEG C, standing the crucible for 30 minutes under heat preservation, and cooling the crucible to 730-740 DEG C along with furnace and subsequently removing scum on the surface; 3: pouring: preheating a mould, adjusting the temperature of magnesium alloy melt and pouring; 4: heat treatment, including: solution treatment and aging treatment. Solving the problems of high cost, low elongation percentage, inadequate heat resistance of the manufactured material, environmental pollution and the like, the method obtains the effect of high strength, good heat resistance, small tendency of incompactness, segregation and crack of the manufactured material.

The invention relates to a multiphase ceramic hybrid composite reinforced metal matrix composite material and a preparation process thereof, a substrate of the material is aluminum and an alloy thereof and magnesium and the alloy thereof, the hybrid reinforced phase is in-situ TiC and TiB2 and SiC particles added through the vacuum stirring and casting method, the weight percent of the reinforced phase of TiC and TiB2 particles is 4-20% by weight respectively, and the volume percent of SiC particles is 4-25% by volume. The preparation process comprises the following steps: firstly melting a substrate, and carrying out fining, fluxing, refining and degassing on the substrate; introducing argon for protection, then carrying out in-situ reaction and the vacuum stirring and casting composite process, further carrying out vacuum refining and degassing treatment, unloading vacuum, skimming dross and oxide inclusion, standing, and then carrying out casting, thereby preparing the high-performance multiphase ceramic hybrid composite reinforced (TiC+TiB2+SiC)/M(M=Al and the alloy thereof, Mg and the alloy thereof) metal matrix composite material. The preparation process can fully play the complementary role of multiphase hybrid reinforcement and the advantages thereof, thereby significantly improving various performances of the composite material; and the process is simple and easy to realize mass production.

A solder recovery device includes a melter which melts solder dross stored in a melting crucible, an agitation unit which agitates the melted solder dross, so as to separate the melted solder dross up and down into an oxidized residue and a recycled solder in the melting crucible, and a suction unit which sucks the oxidized residue generated by the agitation, the suction unit sucking the oxidized residue in an upper portion of the melting crucible to be removed.