8results about How to "Realize impurity removal" patented technology

This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.

The utility model discloses a reaction kettle for preparing anti-oxidation and anti-corrosion long-life steam turbine oil. Relates to the field of steam turbine oil preparation equipment. Comprising a horizontal reaction kettle body, a feeding pipe is arranged at the top of the reaction kettle body, a discharging pipe is arranged at the bottom of the reaction kettle body, a stirring shaft driven by a motor is arranged in the reaction kettle body in a penetrating mode, and a plurality of U-shaped stirring rods are arranged on the outer wall of the stirring shaft; a feeding pipe is arranged in the reaction kettle body, the lower part of the feeding pipe extends to the inner side of the reaction kettle body, the lower part of the feeding pipe is in threaded connection with a sleeve, a filter plate is arranged at one end, far away from the feeding pipe, of the sleeve, and the filter plate is made of a water absorption material. The water removal effect on the materials can be achieved, and then the quality of engine oil made of the materials is improved to the maximum extent.

The application provides a zinc smelting recovery device for waste hard alloy and grinding material, which comprises a main crucible for containing zinc ingots and alloy materials to be treated, the alloy materials to be treated comprising waste hard alloy or grinding material; a heating device for heating the zinc ingots and the alloy materials to be treated to form a zinc metal melt and to heat the zinc liquid to volatilize; a mechanical stirring device with a stirring end extending into the zinc metal melt from above the main crucible, the mechanical stirring device being used for stirring the zinc metal melt to make light impurities in the alloy materials to be treated float on the surface of the zinc metal melt; and a secondary crucible arranged on the side of the main crucible, the inlet of the secondary crucible being communicated with the liquid surface of the zinc metal melt, and the light impurities on the surface of the zinc metal melt being introduced and collected into the secondary crucible under the stirring action of the mechanical stirring device. The application can realize the removal of impurities and purification of coated hard alloy block materials and hard alloy grinding powder materials with high impurity content.

The invention discloses a cooperative control method for card sliver nep impurities of a carding machine. Optimal control is achieved through linkage of three stages of source prevention, process cooperation and dynamic feedback. In the first stage, refined cotton grabbing is carried out in the opening and picking process, the weight of cotton bundles is 20-30 mg / block, and the impurity removal efficiency of a single-axial-flow cotton opener is 25%-35%; in the second stage, a licker-in and cover plate grading impurity removal system is constructed in the carding machine, the licker-in impurity removal efficiency ranges from 50% to 60%, the cover plate impurity removal efficiency ranges from 3% to 10%, the cylinder-cover plate gauge is gradually reduced from 0.25 mm to 0.15 mm, the workshop relative humidity ranges from 55% to 60%, and matched card clothing is cooperatively combined; and in the third stage, a quality sensor monitors in real time and feeds back to the central controller, and process parameters are dynamically and finely adjusted to form a closed loop. According to the method, the impurity content of card slivers is lower than 0.08%, the short fiber growth rate is lower than 3%, the total amount of nep impurities is reduced by 20% or above, the yield is increased by 2%-3%, and the adaptability of high-impurity-content raw materials is remarkably enhanced.

This application discloses a homogenization device, including a frame, a swing furnace, a drive component, a transmission component, a rocker arm, and a connecting rod. The swing furnace is rotatably mounted on the frame; the drive component is connected to the transmission component, and the transmission component has multiple connecting parts, with the distance between any two connecting parts and the rotation axis being different on a plane perpendicular to the rotation axis; the rocker arm is fixedly connected to the swing furnace, and one end of the connecting rod is hinged to any connecting part and can be separated from the connecting part, while the other end is hinged to the rocker arm. Using the above-mentioned homogenization device, when homogenizing melts of different viscosities, the end of the connecting rod away from the rocker arm can be connected to the corresponding connecting part to ensure that the swing angle of the swing furnace is suitable for melts of corresponding viscosities. By connecting the connecting rod to different connecting parts, the swing angle of the swing furnace can be adjusted, enabling the homogenization device to be applied to the homogenization of chalcogenide glasses with different melt viscosities, effectively improving the versatility of the homogenization device.

This invention relates to the field of air pollution control technology, specifically to a catalytic oxidation device for odorous gases used in environmental protection. The device includes a mixing and impurity removal mechanism and a combustion mechanism. The mixing and impurity removal mechanism comprises a conical tank, a tank cover, a preheating box, a combustion chamber, spiral guide vanes, an impurity removal section, and a recovery box. The tank cover is detachably connected to the top of the conical tank. The combustion chamber is located inside the conical tank and connected to the tank cover. The preheating box is located on the outer surface of the combustion chamber. The spiral guide vanes are connected to the outer surface of the preheating box. The impurity removal section is detachably located at the bottom of the combustion chamber. The recovery box is detachably located at the bottom of the conical tank. The combustion mechanism includes a mounting box, silicon carbide heating rods, a catalytic rod, and an isolation block. The isolation block is detachably connected to the inside of the combustion chamber. Two sets of mounting boxes are provided and connected to both ends of the silicon carbide heating rods. The mounting box is connected to the isolation block. The catalytic rod is connected to the top of the isolation block. This invention simultaneously achieves the mixing, impurity removal, and preheating functions of odorous gases and air, improving the efficiency of air pollution treatment.

The application discloses a preparation method of a biomass hard carbon negative electrode material, and comprises the following steps: (1) pre-carbonizing a biomass raw material, and then uniformly mixing the pre-carbonized biomass raw material with an alkali solution to obtain wet material; (2) high-temperature carbonizing the wet material in an inert atmosphere, and then rapidly cooling the high-temperature carbonized wet material to obtain carbonized biomass; the cooling rate is controlled to be 10-30 DEG C / min during the rapid cooling; and (3) physically stripping the crystalline substances on the surface of the carbonized biomass, and then crushing the carbonized biomass to obtain the biomass hard carbon negative electrode material. The biomass hard carbon needs high-temperature carbonization during processing, and the high-temperature carbonization process is used for impurity removal, so that the energy consumption is not additionally increased. The impurities are separated by using a physical method, and the process is simple and environment-friendly. Overall, the material prepared by the method has low impurity content, excellent sodium storage performance, low energy consumption in the preparation process, simple process and environment-friendly.

A low-cost concentration and stepwise extraction and utilization process for valuable components of coal mine water is disclosed. This process employs pretreatment of mine water using drift flotation and flocculation sedimentation to remove impurities. Through oblique light correction to enhance solar radiation energy, film overflow heating of the mine water, flash distillation of hot mine water, and condensation collection, the mine water is concentrated at low cost within a solar distillation device. Metal and heavy metal components are extracted from the mine water through solid-phase and liquid-phase chemical conversions and utilized as resources. Highly toxic chromium and radioactive uranium are captured from the mine water using an adsorption + reduction method. Arsenic compounds are adsorbed using a loaded fluoride ion adsorbent. This process achieves low-energy consumption, resource recovery, and harmlessness in mine water treatment, enabling clean and circular utilization of the mine water. It represents a technology for fundamentally controlling mine wastewater pollution.