Abstract: A battery thermal treatment apparatus including, a thermal treatment part, in which a battery is transferred and thermally treated through a closed tube; and a gas handling part, which cools and performs dust collection of gas generated in the thermal treatment part, and, a method for battery thermal treatment and performing dust collection of thermal treatment gas, including, cooling and performing dust collection of gas generated during thermal treatment of a battery, which is transferred and in one direction through a closed tube, thermally treated at a temperature ranging from 400° C. to 1000° C., and discharged.

Abstract: An embodiment of the present invention provides a method for preparing a solid lithium salt from a lithium solution including the steps of, preparing a mixture in which a phosphorus-containing material is added to a lithium solution in step 1; adding a basic solution to the prepared mixture to adjust the pH in step 2; making the pH-adjusted mixture react by raising its temperature and filtering to recover lithium phosphate in step 3; preparing an acid lithium solution in which distilled water and acid are added to the recovered lithium phosphate, in step 4; and recovering a solid lithium salt by evaporative concentration of the acid lithium solution, in step 5.

Abstract: The present invention provides a manufacturing method of crude copper from low-grade copper sludge, one embodiment of the present invention comprises the steps of: (1) calcining a low-grade copper sludge (step 1); (2) producing a mixture by adding at least one selected from a group consisting of binder, flux and combinations thereof to the calcined low-grade copper sludge (step 2); (3) producing a briquette by compression molding the mixture (step 3); (4) melting and reducing by charging the briquette into a submerged arc furnace with adding flux (step 4); and (5) separating crude copper and slag produced by melting and reducing (step 5).

Abstract: An embodiment of the present invention provides a method for producing lithium phosphate from a lithium solution, comprising the steps of, preparing a mixture in which a phosphorus-containing material is added to a lithium solution in step 1; adding a basic solution to the prepared mixture to adjust the pH to 10 to 12 in step 2; and making the pH-adjusted mixture react by raising its temperature and filtering to recover lithium phosphate in step 3.

Abstract: A battery thermal treatment apparatus including, a thermal treatment part, in which a battery is transferred and thermally treated through a closed tube; and a gas handling part, which cools and performs dust collection of gas generated in the thermal treatment part, and, a method for battery thermal treatment and performing dust collection of thermal treatment gas, including, cooling and performing dust collection of gas generated during thermal treatment of a battery, which is transferred and in one direction through a closed tube, thermally treated at a temperature ranging from 400° to 1000°, and discharged.

Abstract: An embodiment of the present invention provides a method for preparing a solid lithium salt from a lithium solution including the steps of, preparing a mixture in which a phosphorus-containing material is added to a lithium solution in step 1; adding a basic solution to the prepared mixture to adjust the pH in step 2; making the pH-adjusted mixture react by raising its temperature and filtering to recover lithium phosphate in step 3; preparing an acid lithium solution in which distilled water and acid are added to the recovered lithium phosphate, in step 4; and recovering a solid lithium salt by evaporative concentration of the acid lithium solution, in step 5.

Abstract: An embodiment of the present invention provides a method for producing lithium phosphate from a lithium solution, comprising the steps of, preparing a mixture in which a phosphorus-containing material is added to a lithium solution in step 1; adding a basic solution to the prepared mixture to adjust the pH to 10 to 12 in step 2; and making the pH-adjusted mixture react by raising its temperature and filtering to recover lithium phosphate in step 3.

Abstract: The present invention provides a manufacturing method of crude copper from low-grade copper sludge, one embodiment of the present invention comprises the steps of: (1) calcining a low-grade copper sludge (step 1); (2) producing a mixture by adding at least one selected from a group consisting of binder, flux and combinations thereof to the calcined low-grade copper sludge (step 2); (3) producing a briquette by compression molding the mixture (step 3); (4) melting and reducing by charging the briquette into a submerged arc furnace with adding flux (step 4); and (5) separating crude copper and slag produced by melting and reducing (step 5).