A method for recovering waste lithium battery materials, comprising: (1) performing cell-disassembling on a waste lithium battery to obtain battery powder, ammonia leaching the battery powder to obtain a mixture, and subjecting the mixture to solid-liquid separation to obtain a leached solution and a filter residue; (2) adding a fluorine-phosphorus precipitating agent to the leached solution to obtain a mixture, and subjecting the mixture to solid-liquid separation to obtain a filtrate; (3) subjecting the filtrate to ammonia distillation, subjecting a mixture obtained to solid-liquid separation to obtain a filtrate and a filter residue containing basic copper carbonate and lithium carbonate; (4) washing the filter residue with water, and separating the basic copper carbonate to obtain a washing water; (5) reducing and calcining the filter residue, washing the residue, adding the washing water to the residue to collect lithium by water leaching, and filtering a mixture to obtain a filtrate.

Various examples are provided in relation to improved recovery and throughput of both fine and coarse particulate materials. In one example, a method includes injecting an aqueous suspension of a cloud of small air bubbles into an aqueous phase including fine particulate materials, wherein the fine particulate material is selectively hydrophobized and collected by small air bubbles; allowing the bubbles to rise in the aqueous phase; and collecting the air bubbles to obtain a concentrate of the fine particulate materials. In another example, a method includes adding a hydrophobizing agent to an aqueous phase to render coarse particulate material selectively hydrophobic; allowing air bubbles to attach to the coarse particulate material and changing the apparent specific gravity of the coarse particulate materials so a layer of one type of coarse particle is formed on top; allowing the one type of coarse particles to float and enter the forth phase.

Methods for recovering a metal value from a metal-bearing material are provided. The method comprises agglomerating the metal-bearing material with an agglomeration solution comprising a raffinate, an oxidant, and citric acid or salts thereof to form an agglomerated metal-bearing material; leaching the agglomerated metal-bearing material with a leaching solution comprising the raffinate and the citric acid or salts thereof to produce a pregnant leaching solution and a leached material; re-oxidizing the leached material with a curing solution comprising the raffinate and the oxidant; and recovering the metal value from the pregnant leach solution to produce the raffinate.

A method of recycling batteries includes steps of: shredding the batteries to generate a shredded battery feed material, wetting the shredded battery feed material with an ammonia carbonate lixiviant to generate a slurry, separating the battery feed material in the slurry into a relatively light fraction material slurry and a relatively heavy fraction material slurry, processing the relatively light fraction material slurry in a first counter current ammoniacal leaching and decanting circuit to produce a first pregnant leaching solution including a soluble lithium (Li) component, and processing the relatively heavy fraction material slurry in a second counter current ammoniacal leaching and decanting circuit to produce a second pregnant leaching solution including, if present in the batteries, soluble nickel (Ni), cobalt (Co), zinc (Zn) and copper (Cu) components and insoluble graphite, iron (Fe), aluminum (Al), manganese (Mn) and rare earth element (REEs) components

Provided is a method for removing arsenic from copper smelting soot and comprehensive recovery of valuable metals. According to the method, a metal leaching synergist is prepared through thiol-ene click chemical reaction, which is capable of reacting more effectively with arsenic and metal impurities in the copper smelting soot due to its special chemical structure, thereby improving leaching efficiency; and the cage-like structure of the polysilsesquioxane provides excellent chemical stability, the removal rate of harmful substances in the copper smelting soot can be increased by using the synergist, environmental pollution is reduced, meanwhile, the recovery rate of metal resources is increased, and the requirements of green chemistry and sustainable development are met. The present disclosure realizes the centralized management of As and also realizes the step-by-step recovery of valuable metals such as Cu, Zn, Pb, Bi, and In.

The present invention relates to an improved apparatus for economically extracting metal from a metal-bearing material. In particular, the present invention relates to an improved apparatus for extracting metal, including inter alia base metal (i.e. copper) and gold, from a metal-bearing ore, concentrate or other metal-bearing material. The present invention further extends to a process for the extraction of such metal which is carried out in accordance with the aforementioned apparatus. According to a first aspect thereof, the present invention provides an apparatus for extracting metal from a metal-bearing material, said apparatus, including a feed receptacle for receiving a metal-bearing feed stream; a reaction vessel; at least one pump means for delivering the metal-bearing feed stream to the reaction vessel; a means for introducing leaching agents, in the form of a leaching agent solution, to the reaction vessel; a means of agitation by circulating the metal-bearing feed stream and leaching agent solution in the reaction vessel so as to allow for a combination of agitation (tank) leaching and vat leaching to take place; a means for achieving liquid/solid separation; and a means for extracting a metal containing product; wherein said apparatus is re-locatable and transportable in order to allow the apparatus to be assembled easily on site without being geographically bound to one specific site.

A method of recovering a metal from a low-grade ore which is subjected to cyanide leaching to produce a PLS which contains a metal cyanide which is removed from the PLS by ultrafiltration and nano-filtration, and then acidified and sulphidised to produce a metal sulphide from which the metal is extracted, and hydrogen cyanide which is recycled to the cyanide leaching step.

A hydro-metallurgical method 80 for the removal of uranium, thorium, radium, lead, bismuth and polonium and/or other radionuclides from a radioactive copper concentrate to produce an upgraded copper concentrate having lowered emission levels. The method comprises the step of: subjecting the copper concentrate to an acidic leaching process (NONOX leach) 120 using a sulfate and chloride containing lixiviant under electrochemically controlled conditions, to allow at least partial removal of one or more of the radionuclides to produce the lowered emission upgraded copper concentrate, wherein the leaching process is conducted at elevated temperature and under pressure to suppress boiling in the leaching process.

A method of leaching a gold/copper-containing sulfidic mined material that includes two leach stages, with a gold leach stage leaching gold from the material with a gold leach liquor and a copper leach stage leaching copper from the material with a copper leach liquor.

Provided is a water-insoluble crosslinked structure with an excellent metal-adsorbing effect. The crosslinked structure is formed by crosslinking a first linear polymer and a second linear polymer. The first linear polymer has a plurality of pendant groups represented by Formula (a). The second linear polymer has a plurality of pendant groups represented by Formula (a). Some of the plurality of pendant groups in the first linear polymer and some of the plurality of pendant groups in the second linear polymer are bonded to each other via a crosslinker. In the formula, ring Z represents a heterocycle containing a nitrogen atom as a heteroatom, R.sup.1 represents a single bond or an alkylene group having from 1 to 10 carbons, and Q.sup.+ represents a counter cation.

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