Method for recovering gold from lead-silver residues

The invention discloses a method for recovering gold from lead-silver residues, and belongs to the technical field of comprehensive utilization of residue resources to extract precious metal. Comprising the following steps that the lead-silver slag is dried through a rotary kiln, the dried lead-silver slag, an additive and a flux are added into a pyrometallurgy furnace, and pulverized coal is injected for reduction smelting; iron-silicon slag and smoke containing gold, lead and zinc are obtained through pyrogenic process smelting separation, the iron-silicon slag is sold as an ingredient of a building material enterprise, and the smoke containing gold, lead and zinc enters a wet process; the gold-lead-zinc-containing smoke dust is added into a dilute acid solution prepared from sulfuric acid and water for leaching, a zinc sulfate solution is obtained through filtering and enters a zinc hydrometallurgy main system, the gold-lead-containing slag enters a lead pyrometallurgy system, and gold ...

Alloy block surface grinding device and method

The invention discloses an alloy block surface grinding device and method, and belongs to the technical field of alloy workpiece maintenance equipment. The alloy block surface grinding device comprises a support, a roller, a workbench and a motor, wherein the motor is a direct current variable-speed motor; the support is arranged on the workbench and provided with a bearing; the roller is installed on the bearing; one end of the bearing is connected with the motor; a laser emitter is installed on one side of the support, and a laser signal receiving device is installed at the corresponding position of the other side of the support, and connected with a control switch of the motor. According to the grinding method, the size of an alloy block is not greater than 10 cm *10 cm * 10 cm. The grinding method includes the four steps of roller grinding, washing, moisture removal and sand removal.

Method for producing electrodeposited copper from polymetallic copper slag

The invention discloses a method for producing electrodeposited copper from polymetallic copper slag, which includes the following steps: the polymetallic copper slag is roasted to oxidize, so that the complex states of valuable metals in the polymetallic copper slag are transformed into oxides, changed into a state which can be selectively leached; leaching first adopts selective leaching agent to leach copper and zinc, the leachate is extracted, reextracted and electrodeposited, so that electrodeposited copper is obtained, and raffinate is vaporized and crystallized, so that zinc hydroxide is obtained; mechanical intensified leaching agent is then used for intensely leaching leaching residue, so that cobalt, nickel and the like in the leaching residue are leached, lead, iron and the like are enriched into the slag, the lead-rich slag is adopted as material for lead smelting, the leachate is extracted and reextracted, so that cobaltous sulfate or cobalt chloride is obtained, and if the ...

Detection apparatus for be used for a section of thick bamboo type wall thickness

The utility model provides a detection apparatus for be used for a section of thick bamboo type wall thickness, including the percentage table, establish U type frame, U type rest base portion be the horizontal gird, and the horizontal gird both ends have ascending two to stretch out the end, and two one end of stretching out the end are the screw nose ends, and it is the screw nose end that two of U type frame stretch out end one end, threaded hole, the other end is through hole end, has the through -hole, screw hole and through -hole coaxial line, the screw hole of screw nose end adopts the screw mode to be connected with the screw gage button, through hole end's through -hole installation percentage table, the measuring head of percentage table is relative with the inner of screw thread gage button, have decurrent and first perpendicular screw of threaded holes and through -hole vertically and the perpendicular screw of second in the upper end that two of U type frame stretch out the ...

High accuracy bilayer aims guide rail

The utility model discloses a high accuracy bilayer aims guide rail, including guide Assembly, upper cover subassembly and lower cover subassembly, guide Assembly includes slide, the top slide of slidable mounting on the slide upper surface for the gliding briquetting of going up of spacing top slide straight line, the lower slide of slidable mounting on the slide lower surface is used for the gliding briquetting down of the stiff and straight line of spacing gliding, and the top slide is perpendicular with the slip direction of lower slide, the upper cover subassembly is equipped with the locking mechanism who is used for the fixed theodolite of locking including the upper cover plate that is used for the fixed theodolite of installation, the upper surface of upper cover plate, the lower cover subassembly is including the lower apron that is used for connecting the tripod, down slide fixed mounting is on the upper surface of apron down, and lower briquetting backward will glide the plate ...

Multi-metal comprehensive recovery process for arsenic-containing smoke dust

The invention provides a multi-metal comprehensive recovery process for arsenic-containing smoke dust. According to the process, leachate containing zinc and copper and leaching slag containing arsenic and lead are obtained through selective leaching, the leachate is extracted by respectively using a copper extraction agent and a zinc extraction agent, and then reverse extraction and electrodeposition are carried out so as to obtain copper and zinc; the leaching slag is leached with a mixed arsenic removing agent consisting of H2O2 and Na2S2O3 so as to obtain arsenic-containing leachate and lead-containing arsenic-removed leaching slag, the arsenic-containing leachate is concentrated and crystallized so as to obtain sodium arsenate, and the lead-containing arsenic-removed leaching slag is subjected to pyrogenic process lead extraction and electrolytic refining so as to obtain lead. According to the invention, the multi-metal comprehensive recovery process uses combined hydrometallurgy and ...

Technology for producing cathode zinc by using cast zinc scum tailings

The invention provides a technology for producing cathode zinc by using cast zinc scum tailings. The technology mainly comprises the following technological steps: (1) first-section leaching: wherein the zinc scum tailings are pulped with water, sulphuric acids and second-section leach liquor are added, the mixture of the pulped zinc scum tailings, the sulphuric acids and the second-section leach liquor is heated, stirred and filtered, and first-section leach liquor and first-section leach residue are obtained; (2) second-section leaching: wherein the first-section leach residue is pulped with water, the sulphuric acids are added, the mixture of the pulped first-section leach residue and the sulphuric acid is heated, stirred and filtered while the mixture is hot, and the second-section leach liquor and second-section leach residue are obtained; (3) the first-section leach liquor is pumped into a mixed precipitation extraction box, the first-section leach liquor is successively mixed with ...

Process for silver extraction by acidifying calcination and leaching of lead silver slag

Method for extracting antimony from lead anode mud

The invention discloses a method for extracting antimony from lead anode mud. The method comprises the steps of lead anode mud waste residue treatment, anode mud efficient leaching, purification of leaching liquid, electrodeposition antimony extracting of the purification liquid and the like. During leaching, mixed liquid of alcohol-ester-base-contained low carbon polyhydric alcohol organic matter and sodium hydroxide is used; the concentration of the sodium hydroxide and the concentration of the polyhydric alcohol low carbon organic matter in the leaching liquid are 50-300 g/L respectively; the ratio of the volume (mL) of the alkaline leaching liquid to the weight (g) of the lead anode mud is 3 : 1-8 : 1; leaching temperature is 20-93 DEG C; and leaching time is 0.5-5 h. In the leaching process, at least 90% of elements such as lead, antimony, bismuth, copper and arsenium in the anode mud can enter the leaching liquid; ions such as copper, lead, bismuth and arsenium in the leaching liquid ...

Preparation of acid-resistant solid-phase extraction filler and method for detecting PAM in copper electrolyte by applying acid-resistant solid-phase extraction filler

The invention discloses preparation of an acid-resistant solid-phase extraction filler and a method for detecting PAM in a copper electrolyte by applying the acid-resistant solid-phase extraction filler. The preparation method comprises the following steps: weighing porous silicon dioxide, dispersing the porous silicon dioxide in an HEMA aqueous solution, and evaporating and drying to obtain HEMA < 0 >/SiO2; preparing an aqueous solution from HEMA0/SiO2, dispersing porous silicon dioxide in the aqueous solution, and drying to obtain HEMA0/SiO2; the preparation method comprises the following steps: preparing silicon dioxide microspheres HEMA/SiO2, repeating the steps for several times to obtain silicon dioxide microspheres HEMA/SiO2, dispersing the silicon dioxide microspheres HEMA/SiO2 into absolute ethyl alcohol in which HEMA, NVP, polyethylene glycol diacrylate and a photoinitiator are dissolved, drying to obtain acid-resistant solid-phase extraction filler NVP-HEMA/HEMA/SiO2 microspheres ...

Pneumatic stirring liquid cooling quenching device

The invention discloses a pneumatic stirring liquid cooling quenching device and belongs to the technical field of metal processing heat treatment equipment. The pneumatic stirring liquid cooling quenching device comprises a quenching box and a cooling box, wherein the quenching box is positioned in the cooling box, and a water inlet and a water outlet are formed in the cooling box; the water inlet is higher than the water outlet; a cooling pipeline is arranged in a snake shape below the quenching box, air holes are formed in the cooling pipeline, the two ends of the cooling pipeline penetrate out of the quenching box and penetrate through the cooling box to be connected with air pumps, and a one-way valve is arranged between the cooling pipeline and each air pump; a baffle is arranged on the cooling pipeline in the quenching box, and baffle holes are formed in the baffle; the quenching box also comprises water circulation acceleration devices, each water circulation acceleration device ...

Treatment method for supplementing system manganese ions and recovering lead and silver by using zinc electrolysis anode slime

The invention relates to a treatment method for supplementing system manganese ions and recovering lead and silver by using zinc electrolysis anode slime, which comprises the following steps of: stirring and slurrying the zinc electrolysis anode slime and zinc electrolyte to obtain slurried liquid; slowly adding hydrogen peroxide into the pulpified liquid, and filtering after leaching reaction to obtain filtrate and filter residues respectively; the filtrate returns to the zinc electrolysis system; the filter residues are enriched substances containing lead and silver and are used as raw materials for pyrogenic process lead smelting. The treatment process is simple and feasible, the environmental pollution is small, the cost is low, the addition of a system manganese source is reduced, the lead and silver metals are effectively recovered, the system manganese ion balance is realized, and the resource recovery of the zinc electrolysis anode slime is further realized.

Process for silver extraction by acidifying calcination and leaching of lead silver slag

A process for silver extraction by acidifying calcination and leaching of lead silver slag comprises the following steps of: water leaching, that is, leaching the lead silver slag with water to remove and separate soluble zinc sulfates, recovering the leachate, and keeping the leaching residues in reserve; acidifying calcination, that is, adding a mixture of the leaching residues and sulfuric acid into a stirring groove, stirring uniformly, placing the mixture in a fully-closed rotary kiln, slowly cooling to room temperature to obtain calcine in reserve; water washing, that is, putting the calcine after acidifying calcination and water in a leaching groove, heating and stirring, recovering the filtrate, and keeping the filtering residues in reserve; and finally ammonia leaching and silverextraction. The invention adopts processes of fire method preprocessing and wet method leaching, that is, separating zinc sulfate by water leaching, recovering silver by acidifying calcination and ammonia ...

Making method of large-scale cavity foaming part molding die and die structure thereof

The invention provides a making method of a large-scale cavity foaming part molding die and a die structure thereof. The making method comprises the following steps of: making an upper die model body, a lower die model body and a chassis, wherein in the production of the upper die model body and the lower die model body, a cavity surface is disassembled into a small square at the top and four same isosceles curved-edge trapezoid arc surfaces by adopting the same splicing method, wherein each isosceles curved-edge trapezoid arc surface has the upper bottom d, the lower bottom L and the height S; making four same isosceles curved-edge trapezoid arc plates, a flange frame provided with an inner frame with the side length L and matched with the chassis B, and the small square with the side length d: first flatly placing the flange frame on a welding platform, placing a cavity mould in the middle of the flange frame, carrying out spot welding on abutted seams of the four isosceles curved-edge ...

Method for extracting lithium from aluminum ash

The invention discloses a method for extracting lithium from aluminum ash, which comprises the following steps: step 1, fluorine and chlorine removal: grinding the aluminum ash and a fluorine and chlorine removal agent in a ball mill, and heating in a muffle furnace for fluorine and chlorine removal reaction; step 2, ball milling and leaching: putting the mixture prepared in the step 1 into a ball mill for grinding, and then adding a leaching agent with the mass percent concentration of 10-100%; step 3, suction filtration: putting the mixed solution prepared in the step 2 into a wet ball mill for ball milling and pulping, and performing suction filtration by using a suction filtration machine to obtain filtrate and filter residues; 4, carbonization: introducing CO2 into the filtrate prepared in the step 3, carrying out carbonization reaction, and carrying out suction filtration by using a suction filter to obtain white crystal particulate matters; according to the method, a distribution ...

High-accuracy two-layer collimating guide rail

The invention discloses a high-accuracy two-layer collimating guide rail which comprises a guide rail component, an upper cover component and a lower cover component, wherein the guide rail component comprises a sliding base, an upper sliding plate slidingly mounted on the upper surface of the sliding base, an upper pressing block used for limiting linear sliding of the upper sliding plate, a lower sliding plate slidingly mounted on the lower surface of the sliding base, and a lower pressing block used for limiting linear sliding of the lower sliding plate; sliding directions of the upper sliding plate and the lower sliding plate are perpendicular; the upper cover component comprises an upper cover plate used for mounting and fixing a theodolite; a locking mechanism used for locking and fixing the theodolite is arranged on the upper surface of the upper cover plate; the lower cover component comprises a lower cover plate connected with a tripod; the lower sliding plate is fixedly mounted ...