Abstract: The method for dissolving battery powder in hydrochloric acid according to the present invention includes: stirring battery powder containing valuable metals obtained from waste lithium batteries in hydrochloric acid with a concentration of 50 to 150 g/L at a mass ratio of 250 to 1000% relative to hydrogen chloride in the hydrochloric acid to provide a hydrochloric acid suspension of the battery powder; and adding a predetermined amount of hydrochloric acid to the hydrochloric acid suspension to set the concentration of hydrochloric acid in the hydrochloric acid suspension to 150 to 350 g/L, and then adjusting and stirring the hydrochloric acid suspension such that the proportion of battery powder in the hydrochloric acid suspension to a mass ratio of 50 to 200% relative to hydrogen chloride in the hydrochloric acid suspension to provide a hydrochloric acid solution of the battery powder.

Abstract: The electrostatic coating plant includes an abnormality detection unit that detects abnormalities of a bumper. The detection of the abnormalities can be based on the difference between the level of the high voltage outputted from a high voltage generator, and the voltage level obtained when the electrostatic coating machine, which is not spraying coating material, is placed at a measurement position opposite to and separated by a predetermined separation distance from multiple measurement points on the bumper, arranged at the coating position, and lines of electric force are formed to the bumper with a constant current level.

Abstract: A shield member (14) is provided on an outer peripheral side of a front surface section (9D) of a shaping air spurting member (9) and is formed of an annular body radially extending to shield electric flux lines traveling toward rotary atomizing head (4) from each of electrodes (6C) in an external electrode member (6). A tubular insulating member (15) formed of an insulating material covering an outer peripheral surface (9B) of the shaping air spurting member (9) is provided on an outer peripheral side of the shaping air spurting member (9). Further, a discharge buffering member (16) formed of an annular self-returning insulator or semi-conductive material is provided in a position where the shield member (14) is separated from the insulating member (15) between the shield member (14) and the insulating member (15).

Abstract: A shaping air spurting member (9) is formed in a tubular shape by using a conductive material, and is arranged on an outer peripheral side of a rotary atomizing head (4) in a state where a front end thereof is positioned in an intermediate section of the rotary atomizing head (4) in a length direction. The shaping air spurting member (9) has a front surface section (9D) that is provided with many numbers of air spurting holes (10, 12) for spurting shaping air toward paint particles sprayed from the rotary atomizing head (4). In addition, a shield member (14) composed of an annular body extending radially is provided on an outer diameter side of the front surface section (9D) in the shaping air spurting member (9) to shield electric flux lines traveling toward the rotary atomizing head (4) from each of electrodes (6C) in an external electrode member (6).

Abstract: A shield member (14) is provided on an outer peripheral side of a front surface section (9D) of a shaping air spurting member (9) and is formed of an annular body radially extending to shield electric flux lines traveling toward rotary atomizing head (4) from each of electrodes (6C) in an external electrode member (6). A tubular insulating member (15) formed of an insulating material covering an outer peripheral surface (9B) of the shaping air spurting member (9) is provided on an outer peripheral side of the shaping air spurting member (9). Further, a discharge buffering member (16) formed of an annular self-returning insulator or semi-conductive material is provided in a position where the shield member (14) is separated from the insulating member (15) between the shield member (14) and the insulating member (15).

Abstract: A shaping air spurting member (9) is formed in a tubular shape by using a conductive material, and is arranged on an outer peripheral side of a rotary atomizing head (4) in a state where a front end thereof is positioned in an intermediate section of the rotary atomizing head (4) in a length direction. The shaping air spurting member (9) has a front surface section (9D) that is provided with many numbers of air spurting holes (10, 12) for spurting shaping air toward paint particles sprayed from the rotary atomizing head (4). In addition, a shield member (14) composed of an annular body extending radially is provided on an outer diameter side of the front surface section (9D) in the shaping air spurting member (9) to shield electric flux lines traveling toward the rotary atomizing head (4) from each of electrodes (6C) in an external electrode member (6).

Abstract: An air motor, a rotary atomizing head provided on a front side of the air motor to be rotatable by the air motor, external electrode units provided in a periphery of the rotary atomizing head, and a high-voltage applying unit that applies a high voltage to the external electrode units to indirectly charge paint particles atomized from the rotary atomizing head with the high voltage. A film cover is provided to be formed with a resin material in a film shape for covering an outer peripheral side of the air motor. The film cover includes a cylindrical rear cover that covers the rear side from the external electrode units and a cylindrical front cover that is mounted to the front side of the rear cover to cover the front side from the external electrode units.

Abstract: A rotary atomizing head (4) is mounted on a front end side of an air motor (3). A shaping air ring (9) with air spout holes (10, 11) formed therein is provided on the rear side of the rotary atomizing head (4). The shaping air ring (9) is formed of a conductive material and is connected to ground. External electrode units (13) are provided in the periphery of the rotary atomizing head (4). A film cover (17) made of an insulating material is provided to cover an outer peripheral side of the air motor (3). A semi conductive member (21) is replaceably mounted to an adaptor (16) provided on an outer peripheral side of the shaping air ring (9). A rear end part (21B) of the semi conductive member (21) is made in contact with a front end part (19D) of the film cover (17). A front end part (21C) of the semi conductive member (21) is made in contact with the shaping air ring (9).

Abstract: A rotary atomizing head (4) is mounted on a fore end side of a motor (3). A shaping air ring (9) having a plurality of air outlet holes (10) at fixed intervals is provided on a rear side of the rotary atomizing head (4). Outer surfaces of the air motor (3) and outer surfaces of the shaping air ring (9) are enshrouded over the entire circumference by a cover member (7) formed of an electrically insulating material. An external electrode assembly (13) is provided radially outwardly of the cover member (7). An annular projecting portion (16) which projects forward is provided on the shaping air ring (9) over the entire circumference. The air outlet holes (10) are open in a fore distal end of this annular projecting portion (16). As a result, a corona discharge can be generated by allowing an electric field to be concentrated at the fore distal end of the annular protecting portion (16).

Abstract: A rotary atomizing head (4) is mounted on a fore end side of a motor (3). A shaping air ring (9) having a plurality of air outlet holes (10) at fixed intervals is provided on a rear side of the rotary atomizing head (4). Outer surfaces of the air motor (3) and outer surfaces of the shaping air ring (9) are enshrouded over the entire circumference by a cover member (7) formed of an electrically insulating material. An external electrode assembly (13) is provided radially outwardly of the cover member (7). An annular projecting portion (16) which projects forward is provided on the shaping air ring (9) over the entire circumference. The air outlet holes (10) are open in a fore distal end of this annular projecting portion (16). As a result, a corona discharge can be generated by allowing an electric field to be concentrated at the fore distal end of the annular protecting portion (16).

Abstract: A current detection resistor is connected between an output terminal of a high voltage generator and an air motor. A coater current detector detects a coater current supplied to a coater based on a potential difference taking place on both terminals of the current detection resistor. The high-voltage control device serves to discriminate based on the coater current detected by the coater current detector whether the coater is caused to be close to a coating object. When it is discriminated that the coater is caused to be close to the coating object, the high-voltage control device outputs a shut-off signal for shutting off supply of the power supply voltage to the power supply voltage control device.

Abstract: A rotary atomizing head (4) is mounted on a fore end side of a motor (3). A shaping air ring (9) having a plurality of air outlet holes (10) at fixed intervals is provided on a rear side of the rotary atomizing head (4). Outer surfaces of the air motor (3) and outer surfaces of the shaping air ring (9) are enshrouded over the entire circumference by a cover member (7) formed of an electrically insulating material. An external electrode assembly (13) is provided radially outwardly of the cover member (7). An annular projecting portion (16) which projects forward is provided on the shaping air ring (9) over the entire circumference. The air outlet holes (10) are open in a fore distal end of this annular projecting portion (16). As a result, a corona discharge can be generated by allowing an electric field to be concentrated at the fore distal end of the annular protecting portion (16).

Abstract: A rotary atomizing head (4) is mounted on a front end side of an air motor (3). A shaping air ring (9) with air spout holes (10, 11) formed therein is provided on the rear side of the rotary atomizing head (4). The shaping air ring (9) is formed of a conductive material and is connected to ground. External electrode units (13) are provided in the periphery of the rotary atomizing head (4). A film cover (17) made of an insulating material is provided to cover an outer peripheral side of the air motor (3). A semi conductive member (21) is replaceably mounted to an adaptor (16) provided on an outer peripheral side of the shaping air ring (9). A rear end part (21B) of the semi conductive member (21) is made in contact with a front end part (19D) of the film cover (17). A front end part (21C) of the semi conductive member (21) is made in contact with the shaping air ring (9).

Abstract: A rotary atomizing head (4) is mounted on a fore end side of a motor (3). A shaping air ring (9) having a plurality of air outlet holes (10) at fixed intervals is provided on a rear side of the rotary atomizing head (4). Outer surfaces of the air motor (3) and outer surfaces of the shaping air ring (9) are enshrouded over the entire circumference by a cover member (7) formed of an electrically insulating material. An external electrode assembly (13) is provided radially outwardly of the cover member (7). An annular projecting portion (16) which projects forward is provided on the shaping air ring (9) over the entire circumference. The air outlet holes (10) are open in a fore distal end of this annular projecting portion (16). As a result, a corona discharge can be generated by allowing an electric field to be concentrated at the fore distal end of the annular protecting portion (16).

Abstract: An air motor, a rotary atomizing head provided on a front side of the air motor to be rotatable by the air motor, external electrode units provided in a periphery of the rotary atomizing head, and a high-voltage applying unit that applies a high voltage to the external electrode units to indirectly charge paint particles atomized from the rotary atomizing head with the high voltage. A film cover is provided to be formed with a resin material in a film shape for covering an outer peripheral side of the air motor. The film cover includes a cylindrical rear cover that covers the rear side from the external electrode units and a cylindrical front cover that is mounted to the front side of the rear cover to cover the front side from the external electrode units.

Abstract: A rotary atomizing head is mounted on a fore end side of a motor. A shaping air ring having a plurality of air outlet holes at fixed intervals is provided on a rear side of the rotary atomizing head. Outer surfaces of the air motor and outer surfaces of the shaping air ring are enshrouded over the entire circumference by a cover member formed of an electrically insulating material. An external electrode assembly is provided radially outwardly of the cover member. An annular projecting portion which projects forward is provided on the shaping air ring over the entire circumference. The air outlet holes are open in a fore distal end of this annular projecting portion. As a result, a corona discharge can be generated by allowing an electric field to be concentrated at the fore distal end of the annular protecting portion.

Abstract: A current detection resistor is connected between an output terminal of a high voltage generator and an air motor. A coater current detector detects a coater current supplied to a coater based on a potential difference taking place on both terminals of the current detection resistor. The high-voltage control device serves to discriminate based on the coater current detected by the coater current detector whether the coater is caused to be close to a coating object. When it is discriminated that the coater is caused to be close to the coating object, the high-voltage control device outputs a shut-off signal for shutting off supply of the power supply voltage to the power supply voltage control device.

Abstract: A rotation restricting mechanism is provided between a mounting shaft section of a rotational shaft and a mounting tube section of a rotary atomizing head. The rotation restricting mechanism is constituted by a male spline member which is provided on the outer peripheral side of the mounting shaft section, and a female spline member which is provided on the inner peripheral side of the mounting tube section. By meshing engagement of the male spline member with the female spline member, the rotation restricting mechanism restricts rotational displacements of the rotary atomizing head relative to the rotational shaft (14).

Abstract: Measurement data of intensities of fluorescence obtained by directing excitation light onto a subject is acquired. An initial value of an absorption coefficient of the phosphor is set on the basis of a concentration distribution of the phosphor, an intensity distribution of the fluorescence on the basis of an absorption coefficient and a diffusion coefficient (reduced scattering coefficient) of the subject, which are set beforehand, are calculated, and the measurement data is compared with the calculation result. If these are found not to be matched, an absorption coefficient of the phosphor at which the error will be a minimum is estimated by performing an inverse problem calculation using a mathematical model. The calculation of the intensity distribution of the fluorescence and evaluation of the error from the obtained concentration distribution are repeated using the absorption coefficient, and a concentration distribution for which the error is the minimum is acquired.

Abstract: A rotation restricting mechanism is provided between a mounting shaft section of a rotational shaft and a mounting tube section of a rotary atomizing head. The rotation restricting mechanism includes a male spline member provided on the outer peripheral side of the mounting shaft section, and a female spline member provided on the inner peripheral side of the mounting tube section. By meshing engagement of the male spline member with the female spline member, the rotation restricting mechanism restricts rotational displacements of the rotary atomizing head relative to the rotational shaft.