Provided are a method of fragmenting or a method of generating cracks in a semiconductor material, and a method of producing semiconductor material lumps, which can prevent contamination from an electrode material accompanied by application of a high-voltage pulse; in a method of fragmenting or generating cracks in the semiconductor material by applying high-voltage pulse to the semiconductor material disposed in liquid, new fluid is supplied towards at least one of a part on which the high-voltage pulse is applied and a vicinity of an electrode part, and the new fluid and a part of the liquid are drawn from the liquid and discharged.

An apparatus for remediation of a copper and nickel co-contaminated soil includes a housing. A crushing device is arranged at the upper part of the inside of the housing. A stirring device is arranged below the crushing device. An anode electrode and a cathode electrode are provided at both ends of the inner bottom of the housing, respectively. In the present invention, the soil contaminated by copper and nickel is first poured from the top of the crushing device, and then crushed thoroughly under the action of the crushing device. The crushed soil facilitates the movement of copper and nickel metal ions therein toward the electrodes under the action of the anode electrode and the cathode electrode, thereby achieving optimal soil remediation.

A roller press capable of applying an electric field comprises a base, a frame (12), press rollers, an inter-roller distance adjustment device (11), a speed adjustment device (122), a voltage application device, a feed deflector (19), and a discharge device. A surface of the press roller is made of an electrically-conductive material, and an electric field is created when a voltage is applied to the press roller. In the roller press, an alternating or direct current electric field is applied between the press rollers to create an electrochemical action, such that particles or a solution in a system is induced to undergo a physical or chemical change, thereby enhancing interaction therebetween, and accordingly increasing grinding and dispersion efficiency of a solid-liquid dispersion system.

A high-voltage electric pulse device for crushing pretreatment of ores includes an ore feeding bin, a pulse insulating barrel body, a supporting frame, a pulsation device, a product collector and a power supply. The pulse insulating barrel body and the pulsation device are assembled together, a pulsation insulating barrel body is connected with an actuating diaphragm, the actuating diaphragm is connected with an ore discharging outlet, a pulsation cone is arranged in the ore discharging outlet, the pulsation cone is hinged to a connecting rod, and the connecting rod is hinged to an eccentric wheel. Expanding and contracting devices are arranged on a cover plate, a copper bar of each expanding and contracting device is connected to a corresponding high-voltage ceramic capacitor through a high-voltage wire in parallel. A high-voltage negative pole is mounted on a screen cloth at the pulse insulating barrel body.

According to a method for fragmenting of pourable material by high-voltage discharges, a material flow of the material, immersed in a process liquid, is guided past an electrode assembly by a conveying device carrying the material flow. By charging the electrode assembly with high-voltage pulses, high-voltage punctures through the material of the material flow are produced. The electrodes of the electrode assembly are immersed in the process liquid from above, and those of these electrodes between which the high-voltage punctures are produced face each other with an electrode spacing transverse to the material flow direction.

A powder deagglomerator comprises a vertical flow chamber, a powder inlet tube, and an ultrasonic horn vibrationally coupled to an ultrasonic transducer. The vertical flow chamber includes an outer wall, powder outlet port, and a mounting port sealably engaging an ultrasonic horn. The powder inlet tube extends through the outer wall and is aligned to dispense agglomerated powder in a gaseous stream downward onto a distal end of the ultrasonic horn. A method of using the powder deagglomerator to deagglomerate a powder is also disclosed.

A electrocrushing drill bit may include a bit body; an electrode coupled to a power source and the bit body, the electrode having a distal portion for engaging with a surface of a wellbore; a ground ring coupled to the bit body proximate to the electrode and having a distal portion for engaging with the surface of the wellbore, the electrode and the ground ring positioned in relation to each other such that an electric field produced by a voltage applied between the ground ring and the electrode is enhanced at a portion of the electrode proximate to the distal portion of the electrode and at a portion of the ground ring proximate to the distal portion of the ground ring; and an insulator coupled to the bit body between the electrode and the ground ring.

A fragmentation system for electrodynamic fragmentation of material contains a feed and an outlet for transporting material along a transport path in a transport direction. At least one high-voltage pulse source is provided, each of the high-voltage pulse sources contains at least one first electrode and at least one second electrode for generating a high-voltage discharge in a discharge chamber. The transport path has a fractionation section, and the fractionation section extends through the discharge chamber. A selection device for selectively extracting the material on the transport path is provided in order to channel material and/or fragments of the material having a diameter smaller than a minimum diameter past at least one portion of one of the fractionation sections.

A electrocrushing drill bit may include a bit body; an electrode coupled to a power source and the bit body, the electrode having a distal portion for engaging with a surface of a wellbore; a ground ring coupled to the bit body proximate to the electrode and having a distal portion for engaging with the surface of the wellbore, the electrode and the ground ring positioned in relation to each other such that an electric field produced by a voltage applied between the ground ring and the electrode is enhanced at a portion of the electrode proximate to the distal portion of the electrode and at a portion of the ground ring proximate to the distal portion of the ground ring; and an insulator coupled to the bit body between the electrode and the ground ring.

An apparatus for remediation of a copper and nickel co-contaminated soil includes a housing. A crushing device is arranged at the upper part of the inside of the housing. A stirring device is arranged below the crushing device. An anode electrode and a cathode electrode are provided at both ends of the inner bottom of the housing, respectively. In the present invention, the soil contaminated by copper and nickel is first poured from the top of the crushing device, and then crushed thoroughly under the action of the crushing device. The crushed soil facilitates the movement of copper and nickel metal ions therein toward the electrodes under the action of the anode electrode and the cathode electrode, thereby achieving optimal soil remediation.