18 results about "Black substance" patented technology

The invention relates to the technical field of tin recovery, in particular to a detection method for recovered tin and a method for preparing a lead-free tin bar, a tin wire, a tin sheet and a tin bar, and the detection method for recovered tin comprises the steps that S1, the surface of a tin block is cleaned; s2, the tin block is placed in a fluxing agent; s3, the fluxing agent is heated to 240 DEG C to 290 DEG C, so that the tin block is melted into tin beads; and S4, the tin beads are cooled to the room temperature in the fluxing agent. If black substances exist on the surfaces of the cooled tin balls, it is determined that the recycled tin blocks cannot be used for production. And if no black substance exists on the surface of the cooled tin bead, the recovered tin block can be directly used for production. Therefore, the quality of the recycled tin can be quickly distinguished.

The present invention lies in the field of pyrometallurgy and discloses a process and a slag suitable for the recovery of Ni and Co from Li-ion batteries or their waste, particularly from Black Mass.The slag composition is defined according to:25%<MnO<70%;Al2O3+0.5 MnO<45%SiO2>5%;Li2O>1%;MnO+Li2O+Al2O3+CaO+SiO2+FeO+MgO+P2O5>90%; and,wherein (CaO+2 Li2O+0.4 MnO) / SiO2≥2.0.This composition is particularly adapted to limit or avoid the wear or corrosion of furnaces lined with magnesia-bearing refractory bricks.

An electrochemical deposition apparatus and method for the selective recovery of metal. The electrochemical deposition apparatus comprises a porous cathodic material, an anode, an inter-electrode region formed by the anode and cathode, and a gas release channel. The method may comprise passing a solution comprising a metal into a cavity, changing an oxidation state of a metal, and selectively depositing the metal onto a porous cathodic material. The electrochemical deposition apparatus may recover metal from metal feed in the form of metal hydroxides. The recovered metal may be from any source including, but not limited to, minerals, electronic waste, and black mass.

The application discloses a gold source pre-melting purification method for electron beam evaporation, which comprises the following steps: dividing the gold source into N batches, wherein the volume of each batch of gold source accounts for 1 / 5-1 / 3 of the volume of the crucible; putting the first batch of gold source into the crucible, heating to complete melting under a vacuum of ≤8*10 ‑4 10%-30% of the rated power of the electron gun under a vacuum of Pa, and keeping for 1-3 minutes; taking out after cooling, wiping the surface of the gold ingot with a dust-free cloth dipped in an alcoholic solvent; putting the wiped gold ingot back into the crucible, adding the second batch of gold source, and repeating the above heating, cooling and wiping steps until all batches are processed; melting the finally obtained gold ingot and using it for electron beam evaporation coating. The application can effectively remove the black substances appearing on the surface of the gold source after melting, and significantly improve the quality of the gold film.

Embodiments of the present disclosure generally relate to methods for recovering valuable metals from various metal sources including metal slags, ores, black masses, and / or other materials. In one or more embodiments, a method for removing metals from metal sources is provided and includes exposing a metal slag to an acid, where the metal slag contains iron, vanadium, zinc, antimony, copper, lithium, arsenic, or combinations thereof, and mixing the metal slag and the acid to produce an acid-coated slag. The method also includes reacting metals in the metal slag with the acid to produce metal salts and a residual slag during a reaction process which includes providing the acid-coated slag a reaction time of at least 24 hours, and separating the metal salts and the residual slag during a separation process. The metal salts may contain iron, vanadium, zinc, antimony, copper, lithium, arsenic, or combinations thereof.

A black elastomer molded article according to the present technology is provided with an affixing surface to which an adherend having light transmission property is affixed in a removable manner, wherein the black elastomer molded article includes a thermoplastic elastomer, a black substance, and a softening agent and has an FP hardness of 85 or less, a reflectance (Ym value) of the affixing surface being 5.0% or less, a surface roughness (Ra) of the affixing surface being 1.0 μm or less, and an adhesive force (with respect to SUS) of the affixing surface being from 1.0 N / mm to 8.0 N / mm.

1. The name of the design product: magnetic fluid sound box. 2. The use of the design product: for playing audio. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view. 5. Other circumstances that need to be explained: component A (window cover plate) is transparent material, and the black substance in the front panel window is magnetic fluid.

The invention relates to a method for refining and / or recovering a black material, comprising the following steps: a) providing a metal-free black material; b) treating the metal-free black substance with a metal salt to obtain a black substance having a predetermined metal and / or metal oxide content; and / or c) adding an accelerator element selected from the group consisting of N, P, S and / or B to a metal-free black substance or a black substance having a predetermined metal and / or metal oxide content. The invention further relates to a black substance obtained by the method, and to the use of the black substance as an electrode material, an electrochemical catalyst or a heterogeneous catalyst.

The present invention proposes a method for preparing a rod-shaped powder electrode material, comprising the following steps: S1. Adding a palladium precursor material and a mercury precursor material simultaneously to an organic solvent, then adding a reducing agent, stirring at room temperature, and reacting under high temperature and high pressure; S2. After the reaction is complete, cooling to room temperature, centrifuging the product, washing it, and centrifuging it again to obtain a black substance, and drying the black substance to obtain a black rod-shaped powder electrode material. The present invention successfully introduces the heavy metal element mercury into the palladium-based electrode material, achieving modification of the precious metal palladium and resource utilization of the heavy metal element mercury. The operation is simple and easy to implement. The prepared rod-shaped powder electrode material has potential application value in the field of direct alcohol fuel cells.

A process for recycling aluminum hydroxide from a black material comprising aluminum, the process comprising, in a given order, the steps of: in a first leaching step, leaching the black material in an acidic aqueous solution, thereby producing a first leach solution and a first leach residue; in a first separation step, the first leach residue is separated from the first leach solution; in a pH adjustment step, adding a first aqueous alkaline solution to the first leach solution, thereby pH-adjusting the first leach solution, producing a first pH-adjusted leach solution; in an Al / Fe precipitation step, precipitating an Al / Fe precipitate from the first pH-adjusted leach solution wherein the Al / Fe precipitate comprises a mixed aluminum-iron hydroxide and / or aluminum hydroxide; in a second separation step, the Al / Fe precipitate is separated from the first pH-adjusted leach solution; in a second leaching step, the Al / Fe precipitate is leached in a second alkaline aqueous solution, thereby producing a second leach solution and a second leach residue; in a third separation step, the second leach residue is separated from the second leach solution; in an Al precipitation step, an Al precipitate is precipitated from the second leach solution, the Al precipitate comprising aluminum hydroxide, and wherein carbon dioxide or carbonate is not added to the second leach solution as a precipitation aid; in a fourth separation step, the Al precipitate is separated from the second leach solution.

The invention discloses a method for preparing spiral carbon nanofibers based on a flame method. The method specifically comprises the following steps: step 1, preparing a SnCl4 solution; wherein according to the mass percent, the concentration of the SnCl4 solution is 40 to 80 weight percent; 2, after foam nickel is cleaned, the foam nickel makes contact with the SnCl4 solution prepared in the step 1; 3, the foamed nickel treated in the step 2 is placed above flame to be fired, a black substance is generated on the foamed nickel, and the black substance is spiral carbon nanofibers; wherein the combustion time is 3 to 15 minutes.

A kind of copper and copper alloy pipe inner surface residual carbon detection method, main steps include (1) sample preparation;(2) nitric acid solution immersion;(3) preliminary determination;(4) acid solution heating, filtration and filter material drying;(5) detection object extraction;(6) residual carbon determination: using energy dispersive spectrometer or electron probe, under the condition that test parameters are: working voltage 15-20kV, working distance 10-12mm, if composition test shows that the mass fraction of C in these black substances is not less than 70%, it is determined that residual carbon is determined.The method of the application has the advantages of accuracy, reliability, simple operation, short test cycle, strong implementability, etc., can accurately judge the residual carbon on the inner surface of copper and copper alloy pipe, can reduce the corrosion perforation risk of copper and copper alloy pipe caused by residual carbon, improve the reliability of equipment operation, reduce the cost of equipment maintenance management and overhaul.

The utility model relates to the technical field of desulfurization and impurity removal, in particular to a slurry impurity removal device of a belt conveyor. The slurry impurity removing device of the belt conveyor comprises a driving wheel, a filtering conveying belt is arranged on the driving wheel, a discharging port is formed in the filtering conveying belt, a discharging outlet is formed in one side of the driving wheel, and a first-stage rotary washing wheel and a second-stage rotary washing wheel are arranged between the discharging port and the discharging outlet. A loosening rake is arranged between the first-stage rotary washing wheel and the second-stage rotary washing wheel, a first-stage supporting frame is arranged below the first-stage rotary washing wheel, a first-stage scraping plate is arranged on the first-stage supporting frame, a first-stage impurity removing canvas is arranged on the first-stage scraping plate, and the first-stage impurity removing canvas is in contact with the filtering conveying belt. According to the device, through the arrangement of the loosening rake, black substances attached to the interior or the bottom of gypsum are also exposed, and the impurity removal efficiency is greatly improved; and through the arrangement of a scraping plate, the working efficiency of the impurity removal canvas is improved.

The disclosure provides a method for separating a black mass material into first and second constituent parts. The first constituent part comprises or consists of particles of a hydrophobic material and the second constituent part comprises or consists of particles of a hydrophilic material. The method comprises providing an emulsion. The emulsion comprises a first liquid phase dispersed as droplets in a second liquid phase, and the second liquid phase is or comprises water. The method further comprises contacting the emulsion with the black mass material to provide an emulsion-material mix and thereby allowing the particles of the hydrophobic material to be adsorbed into or onto the droplets of the first liquid phase, and the particles of the hydrophilic material to remain in the second liquid phase. The method further comprises separating the particles of the hydrophobic material and the particles of the hydrophilic material to thereby separate the first and second constituent parts of the black mass material. 15

The present invention concerns processing methods for feeding black mass in a pyrometallurgical furnace. Black mass is a powder containing high concentrations of valuable metals such as Ni and / or Co. The present invention is related to conditioning, feeding and smelting black mass. The black mass is smelted in the furnace under reducing conditions at high temperature, thereby forming a liquid bath with an alloy phase and a slag phase. During feeding and smelting of conditioned black mass, the total dust concentration above the liquid bath is 1.5 mg / m3 or less.

The utility model relates to the technical field of double-screw extruders, in particular to an anti-discoloration vacuum bamboo hat. The device comprises a first connecting pipe, a second connecting pipe is fixedly connected to the middle of the bottom of the first connecting pipe, an annular bearing groove is formed between the adjacent sides of the first connecting pipe and the second connecting pipe, a sealing cover plate is arranged at the top of the first connecting pipe, and a supporting pipe is fixedly connected to the middle of the top of the sealing cover plate. The lower portion of the outer side of the supporting pipe is rotationally connected with a guiding bamboo hat, the guiding bamboo hat corresponds to the second connecting pipe, a cleaning assembly is arranged on the guiding bamboo hat, the upper end of the supporting pipe communicates with a connector, and the other end of the connector communicates with a vacuum monitoring module. The guide bamboo hat is arranged to block and condense black substances, and under the action of the inclined surface of the guide bamboo hat, the liquid black substances are guided to drop into the annular receiving groove, so that the black substances are prevented from dropping into materials after being condensed and polluting the materials, and the final finished product quality is improved.

The utility model relates to a gangue transporting device which comprises a frame body, a conveying structure used for transporting gangue and a cleaning structure, the conveying structure and the cleaning structure are both installed on the frame body, a filtering structure used for filtering water after gangue cleaning is arranged in the conveying structure, and the filtering structure is connected with the cleaning structure. A filtering assembly convenient to replace is arranged on the filtering structure, the filtering structure comprises a drainage plate installed in the conveying structure, a filtering protrusion is arranged on the upper end face of the drainage plate, the filtering assembly is arranged at the position, close to the rear side of the drainage plate, of the upper end face of the drainage plate, and the filtering assembly comprises a square block penetrating through the drainage plate; three groups of mounting rods are arranged on the right end face of the square block, and a pull rod is mounted on the other end face of the drainage plate. The gangue conveying device solves the problems that when an existing gangue conveying device cleans gangue, the conveying device and a filtering structure cannot be integrated, then filtering cotton is inconvenient to replace, and filtering of black substances and impurities on the surface of the gangue is affected.

Disclosed herein is a process for recycling aluminum hydroxide from a black mass including aluminum, the process including in the given order the steps of leaching in a first leaching step the black mass in an aqueous acid solution; separating the first leaching residue from the first leaching solution; adding in a pH-adjusting step a first aqueous base solution to the first leaching solution; precipitating an Al / Fe precipitate from the first pH-adjusted leaching solution; separating the Al / Fe precipitate from the first pH-adjusted leaching solution; leaching the Al / Fe precipitate in a second aqueous base solution; separating the second leaching residue from the second leaching solution; precipitating in an Al precipitation step an Al precipitate from the second leaching solution; and separating the Al precipitate from the second leaching solution.