63 results about "Lead(II,IV) oxide" patented technology

The invention discloses a method for recovering a lead-containing raw material by using a wet process. The method comprises the steps: (1) leaching the lead-containing raw material by using a solution, adding a reducing agent to reduce lead dioxide or lead orthoplumbate in the lead-containing raw material into a soluble lead salt, after a lead compound is completely dissolved, filtering the solution, and separating to obtain a filtrate A and an insoluble substance, wherein the solution contains sulfate, a complexing agent and a catalyst; (2) adjusting the pH value of the filtrate A, separating to obtain lead sulfate and a filtrate B, and returning the filtrate B to the step (1) after sulfate radicals are replenished and the pH value is adjusted; (3) directly using lead sulfate as battery materials or commodities, subjecting a sulfate-containing alkaline solution and lead sulfate to reaction, and separating to obtain basic lead sulfates and a filtrate C, wherein the basic lead sulfates include tribasic lead sulfate and tetrabasic lead sulfate. The method can be used for purifying the lead-containing raw material to form lead sulfate and basic lead sulfates directly used for producing lead-acid batteries, thereby being an environment-friendly wet-process recovery method.

The invention is applicable to the field of waste battery recovery technologies and provides a method for preparing lead tetraoxide from waste lead-acid batteries. The method comprises the steps of carrying out pretreatment, preparing lead citrate, preparing second powder, pulping the second powder, preparing the lead tetraoxide, and the like. According to the method for preparing the lead tetraoxide from the waste lead-acid batteries, provided by the invention, lead sulfate and lead monoxide in lead plaster of the waste lead-acid batteries are converted into the lead citrate by using citric acid and alkali metal citrate, and then, the lead tetraoxide is prepared, so that the method has a significant economic benefit, and the technical problem of environment pollution caused by a waste lead-acid battery lead recovery method in the prior art is solved; and the method for preparing the lead tetraoxide from the waste lead-acid batteries is simple in operation, low in cost and high in economic benefit, thereby being very applicable to industrialized production.

The invention discloses a high temperature-resistant resistor ceramic composite material. The high temperature-resistant resistor ceramic composite material is prepared from barium titanate, zirconium dioxide, eucryptite, magnesium oxide, zirconium boride, hafnium diboride, lead zirconate, strontium carbonate, molybdenum disulfide, titania, yttrium oxide, calcium carbonate, thallium carbide, hafnium carbide, zirconium carbide, silicon nitride, zirconium oxide, polyvinyl alcohol, copper oxide, niobium pentoxide, tungsten trioxide, lead tetraoxide, alumina, silica and assistants. The invention also provides a preparation method of the high temperature-resistant resistor ceramic composite material. The high temperature-resistant resistor ceramic composite material has excellent high temperature resistance.

The present invention is one kind of rubber pipe comprising one inner layer of fluororubber and one middle layer and one outer layer of chlorohydrin rubber. The fluororubber consists of polyfluoroprene, thermal black N990, 2, 5-dimethyl-2, 5-dihexane, triallyl cyanourate and carnauba wax; and the chlorohydrin rubber consists of chlorohydrin rubber C, chlorohydrin rubber H, black N550, anti-ager NBC, processing aid R-300, stearic acid, plasticizer RS-107, red lead, ethylene thiourea NA-22, plasticizer W-305ELS and scorch retarder CTP-80. The rubber pipe with one inner layer of fluororubber and one middle layer and one outer layer of chlorohydrin rubber has high heat resistance, high oil tolerance, high ozone tolerance and high fuel oil osmosis resistance.

The invention relates to the technical field of a lead storage battery, in particular to positive pole plate lead paste of a lead storage battery, a preparation method of the lead paste and the lead storage battery employing the positive pole plate lead paste. The positive pole plate lead paste comprises the following substances based on parts by weight: 1,000 parts of lead powder, 2-5 parts of colloidal graphite, 0.1-2 parts of antimony oxide, 1-15 parts of tetrabasic lead sulfate, 20-50 parts of lead tetroxide, 0.1-2 parts of fiber, 60-100 parts of dilute sulphuric acid, 60-100 parts of pure water and 2-15 parts of processing powder. With the positive pole plate lead paste of the lead storage battery, provided by the invention, the corrosion of the lead paste on grid alloy is reduced, and the binding force between the lead paste and the grid alloy is improved; and by the addition of graphite in a relatively large proportion, the conductivity of the battery is greatly improved, and the large-current charging receiving capability of the battery is good.

The invention discloses a method for preparing high-quality lead citrate by a waste lead paste wet method. The method comprises the following steps: lead paste is obtained from a positive plate and a negative plate of a waste lead accumulator; the lead paste is firstly mixed with solution containing sodium citrate to fully desulfurize for solid-liquid separation to obtain filtrate; citric acid is added in the filtrate to adjust pH of the filtrate; the filtrate is reacted with the citric acid for solid-liquid filtration and separation to obtain lead citrate; and the lead citrate is washed and dried to obtain high-quality lead citrate powder. The method prepare the lead citrate and lead tetraoxide by lead paste desulfurized products of waste lead, recovers sodium sulfate in desulfurizing solution, is low in energy consumption and simple in equipment, recovers lead resources in a classified manner, is high in quality of the lead citrate, and has the characteristics of good resource recovery effect and green and environment-friendly production process.

The invention relates to the technical field of battery recycling equipment, in particular to a recycling process of waste battery lead. The recycling process is completed according to the following steps that a lead storage battery is mechanically cut off and broken and then is washed and screened at the same time by a rotary screen washing machine through an alkaline solution, plastic, waste electrolytes and lead bullion are screened out, and the waste electrolytes are conveyed to an ultrafiltration membrane processing system to be processed; lead carbonate is subjected to electromagnetic induction heating, sufficient oxygen is led in, the electromagnetic induction frequency ranges from 8 KHz to 60 KHz, the control temperature ranges from 330 DEG C to 460 DEG C, heat preservation is performed for 5 h to 6 h, and completely-oxidized lead tetroxide will be obtained; and in the electrolysis period, an electromagnetic induction magnetic field is applied at the bottom of an electrolytic tank, the magnetic induction intensity is 800 mT, and national standard number 1 lead is obtained. The recycling process has the beneficial effects that refining of the lead is achieved through a method that electrolysis is used in cooperation with electromagnetism, the purity of the lead is greatly improved, and repeated recycling of precious metal is also achieved; and the recycling process is simple, machining is easy, the recycling process is suitable for large-scale recycling, and therefore the recycling cost is reduced.

The invention discloses a method for converting lead sulfate in a waste lead-acid storage battery into lead tetraoxide, comprising the following steps of: firstly, reacting the lead sulfate, excessive soluble sulfide salt and a small amount of ammonia water, and converting the lead sulfate into lead sulfide; then filtering out the lead sulfide, adding the lead sulfide into hot dilute nitric acid, and fully reacting; then steaming solution, continuously heating to be certain temperature, after reactants are decomposed completely, putting residues into a stirring ball mill for grinding, simultaneously, introducing oxygen-nitrogen mixed gas with certain oxygen content, and obtaining a final product, namely the lead tetraoxide. The method is simple and practical, high temperature is not needed, the energy consumption is low, the pollution is less, the prepared lead tetraoxide can be used as an active substance which is reused in a lead-acid storage battery.

The invention discloses a rubber material. The rubber material is prepared by mixing a rubber compound A and a rubber compound B in equal proportion, wherein the rubber compound A comprises butadiene-acrylonitrile rubber N41, sulfur, zinc oxide, stearic acid, an antiager RD, an antiager 4010NA, microcrystalline wax, fast extruding furnace black N550, high wear-resistant carbon black N330, dibutyl phthalate (DBP), light calcium carbonate, coumarone resin, tetraethylthiuram disulfide, tetramethyl thiuram disulfide, zinc diethyl dithiocarbamate, 2-benzothiazolyl-N-morpholinosulfide and an antiscorching agent CTP; the rubber compound B comprises unitary homopolymerization epichlorohydrin rubber, copolymerization chlorohydrine rubber, zinc stearate, an antiager RD, gum easy T-78, antilux 654, fast extruding furnace black N550, light calcium carbonate, dibutyl phthalate (DBP), lead tetraoxide, sulfur and a promoter Na-22. An oil-resistant sealing component (an oil cylinder sealing gasket) made of the rubber material disclosed by the invention has good oil resistance, heat resistance, gas tightness, flame retardance, tear resistance and low cost.

There is a kind of ferrotitanium compound powder antirust paint, it removes the red lead from the red lead antirust paint, the red lead is replaced by the ferrotitanium compound powder, its advantages are: it uses only 40% compound ferrotitanium powder to replace 50% red lead powder, its main technology includes reach or exceed red lead antirust paint, and the cost can be reduced about 1800 RMB/T. The product is innoxious and has no contamination to environment.

The invention discloses a high-voltage DC electric wire cable insulation material and a preparation process thereof. The insulation material is prepared from the raw materials of: methyl vinyl silicone rubber, organic silicone resin, terpene resin, polyvinylidene chloride, 3-hexyl substituted polythiophene, chlorinated polyethylene, nickel oxide, praseodymium oxide, carbon quantum dots, fumed silica, 2,2'-(1,2-ethylenedioxy)diethanethiol, asphalt-based carbon fibers, itaconic acid, calcium ricinoleate, [gamma] -mercaptopropyl triethoxysilane, an propylene-ethylene semi-crystalline copolymer, an ethylene-octylene copolymer, benzoin dimethyl ether, calcium hydroxide, trioctyl trimellitate, and Pb3O4. The insulation material is higher than 17 MPa in tensile strength, is 230% in break elongation, and is free of breakdown under a 120 kV DC voltage test for 15 min, has good anti-aging property and long service life after the DC voltage test, and is very suitable for being widely applied as a high-voltage DC electric wire cable insulation material.

An exterior-applied plaster for the recovery stage of bone fracture and injury is prepared from vegetable oil, Pb3O4 and 8 Chinese medicinal materials including Chinese and root and bark, prunella spike, senecio, frankincense, myrrh, etc. in a certain proportion.

The invention discloses an antirust coating for a tire type container crane. The antirust coating consists of graphite, phenolic resin varnish, antirust oil, methylbenzene, iron oxide red, titanium dioxide, organic bentonite, magnesium oxide and lead tetroxide. The antirust coating has the advantages of reasonable formula and good working effect.

An electrolytic capacitor casing heat radiating coating containing a graphene material is characterized by comprising the following components by weight: 30 parts of macroporous adsorption resin, 10 parts of silicon carbide, 5 parts of non crystal quartz particles, 2 parts of potassium feldspar, 5 parts of tert-butyl alcohol, 10 parts of graphene, 2 parts of boron fiber, 2 parts of carbon fiber, 2 parts of potassium tungstate, 5 parts of pigment, 50 parts of deionized water, 2 parts of lead tetraoxide, 3 parts of rare earth, 2 parts of chloroplatinic acid, 5 parts of modified corn starch and 0.5 part of cobalt selenide. According to the invention, the graphene mixed coating coats on the electrolytic capacitor shell to effectively achieve the heat radiation effect; the experimental data shows that the coating on the electrolytic capacitor shell can effectively guide the internal temperature of electrolytic capacitor increased by working to the shell and convert heat into infrared radiation wave. In addition to the enhancement of the service life of the electrolytic capacitor, the coating also can keep the work voltage of the electrolytic capacitor at a steady state.

The invention discloses glass powder for preparing a solar cell electrode, as well as a paste composition, a solar cell electrode and a solar cell including same. The glass powder comprises sodium tellurite pentahydrate and lead tetraoxide. The glass powder has a relatively high eutectic point due to lead tetraoxide-sodium tellurite, and can provide a certain space to control of the reactivity between the glass powder and silicon nitride; the composite compound Na element in Na2TeO3 can form an Ag-Na anionic complex, and can be used for promoting liquid-phase sintering of Ag particles in the sintering process. Therefore, the lead tetraoxide-sodium tellurite composition can provide stable reactivity with silicon nitride, and enables a solar cell to have excellent and stable contact resistance. The solar cell electrode prepared by applying the paste composition has excellent adhesive strength, and enables series resistor (Rs) to be minimized, so that high conversion efficiency can be provided.

A lead paste composition of a lead-acid battery anode relates to the technical field of a storage battery and is composed of following components based on weight percentage: 0.06-0.1 percent of tetroxide three lead, 0.04-0.09 percent of linear polyethylene, 10-10.5 percent of deionized water, 0.2-0.6 percent of grapheme, 0.6-2 percent of tertiary butanol, 4.5-8 percent of sulfuric acid and the balance of lead powder. Lead paste prepared according to a lead paste formula and a preparation method has high initial capacity and long cycle life after being prepared into the battery, and the over-discharging resistance performance and charging capability of the battery are far higher than standard requirement.

The invention discloses a preparation method of a lithium ion battery electrode piece containing a PTC coating layer. The method is characterized in that the method comprises the following steps: mixing a positive active material or a negative active material of the lithium ion battery with a conductive agent and a binder according to a certain ratio; performing stirring to obtain positive electrode slurry or negative electrode slurry; mixing the stirred slurry with sol; before the mixed slurry is coated on a current collector, performing the pre-coating of ceramic PTC coating slurry; performing drying to prepare a battery electrode piece after coating is completed, wherein the ceramic PTC coating layer is composed of barium titanate, titanium dioxide, tantalum pentoxide, lanthanum oxide,lead tetraoxide, calcium carbonate and manganese oxide. According to the invention, a heating source is made by using the temperature resistance characteristic, and can also play a role in overheatingprotection of the battery as a heating element.

The invention relates to a lead tetraoxide oxidation technology which comprises the following steps: 1) preheating air; 2) blowing the preheated air into an oxidizing furnace; 3) performing three-section temperature control on the oxidizing furnace, wherein the temperature of the oxidizing furnace from top to bottom is divided into the first section of temperature controlled at 450-510 DEG C, the second section of temperature controlled at 420-460 DEG C and the third section of temperature controlled at 380-420 DEG C; 4) putting the material into the oxidizing furnace from top to bottom and performing oxidizing reaction; 5) storing the oxidized material after fully reacting in a hearth of the oxidizing furnace into a storage silo and cooling; 6) reducing the temperature of the oxidized material in the storage silo to 60 DEG C or below and then taking out from the storage silo. According to the invention, the purpose of quickly preparing red lead can be achieved, the yield is increased, the resource is saved, the cost is saved and the production efficiency is increased.

The invention relates to a cathode, anode and electrolyte formula for a solar power generation storage battery. Cathode materials are lead tetroxide, sulfuric acid, polyester staple fiber, carbon fiber, calcium phosphate, colloidal graphite, a polyaniline nanosolution, silica emulsion and lead; anode materials are paraffin, sodium sulfonate, polyester staple fiber, sodium alginate, strontium sulfate, polytetrafluoroethylene emulsion, humic acid, water and lead; electrolyte raw materials are sulfuric acid, ammonium sulfate, magnesium sulfate, sodium carboxymethylcellulose, sodium tetraborate, stannous sulfate, polyvinyl alcohol and water; by matching the cathode raw materials, the anode raw materials and the electrolyte raw materials, the cathode, anode and electrolyte formula has the characteristics of high deep discharge capacity, high overcharge resistance and long cycle life; the deep discharge capacity is improved by 4 percent, the overcharge resistance is improved by 5 percent, and the cycle life is prolonged by 10 percent.