8 results about "Third phase" patented technology

The invention provides a test method and device for a motor active short-circuit relay, and a storage medium. The method includes the steps: performing the zero speed detection of a motor after a motor controller completes a low-voltage power-on operation, wherein when the motor controller is powered down, a first relay and a second relay are both switched on; controlling the second relay to be turned on if the motor passes the zero speed detection, and injecting a first excitation signal at the control ends of a first phase winding and a third phase winding through the motor controller; performing injection detection of the first excitation signal to determine whether the first excitation signal is successfully injected or not; controlling the first relay to be turned on if the first excitation signal is successfully injected, and obtaining a voltage across two ends of the first relay; and judging whether the power-on test of the first relay is successful or not according to the voltage across two ends of the first relay. The method can realize the turn-on test of the short-circuit relay, and ensures the reliability of the active short-circuit function of the vehicle motor duringdriving.

The invention relates to a refractory material which is thermally treated at a temperature of at least 1300 °C, preferably 1300 °C to 1750 °C, such that the material has an acicular structure and comprises a combination of a first phase, a second phase, and a third phase, wherein: the first phase comprises 2-10 wt.% C, <5 wt.% N, 30-40 wt.% O, 50-70 wt.% Al, and <5 wt.% Si, based on the total proportion of the first phase, the second phase comprises 1-7 wt.% C, 3-8 wt.% N, 25-35 wt.% O, 55-65 wt.% Al, and <5 wt.% Si, based on the total proportion of the second phase, and the third phase comprises <7 wt.% C, 14-28 wt.% N, 10-15 wt.% O, 52-63 wt.% Al, and <20 wt.% Si, based on the total proportion of the third phase, to a batch composition for producing a refractory material, to a green body produced from a batch composition, to a method for producing a refractory material, and to the use of such a refractory material.

Sample purification systems include a particle extraction assembly having a mixing compartment and a settling compartment. A biological sample is mixed with two liquid phases formulated to effectuate transfer of a biological molecule into a first phase and particulate contaminants into a second phase. The first phase includes a solubilizing salt, the second phase includes an organic molecule, and the mixture can have little or no monoatomic salt or dextran. The molecule-containing first phase can be optionally concentrated without also concentrating the particulate contaminants and introduced into a multi-stage liquid-liquid extractor, by which the biological molecule or molecular contaminants are extracted from the first phase into a third phase, thereby purifying the molecule away from contaminants. The extracted sample can be further purified through a series of processing steps. The system can be run in continuously mode to maintain sterility of the sample.

The invention discloses an extraction method for simultaneously extracting different types of novel pollutants in a water sample medium, which is characterized in that a specific amount of third-phase hydrotropy solvent which is mutually soluble with a water phase and an extraction solvent phase is creatively added to form a liquid-liquid extraction method of a three-phase system, and a specific vacuum concentration process is assisted, so that the novel pollutants in the water sample medium can be simultaneously extracted. While the extraction efficiency of a traditional liquid-liquid extraction method on weak-polarity compounds is ensured, the extraction efficiency of weak-polarity organic compounds at an ultralow concentration level, organic compounds with relatively strong polarity and some organic compounds with high volatility is remarkably improved.

Provided in the present description is a three-phase system-based 3D printing material, comprising a first crystalline polymer, a second crystalline polymer and a third phase polymer. The second crystalline polymer comprises a micro-nano fiber structure, the melting point of the second crystalline polymer being higher than the melting point of the first crystalline polymer. The third phase polymer comprises at least one of a crystalline polymer and an amorphous polymer, the melting point of the crystalline polymer being lower than the melting point of the second crystalline polymer, the glass transition temperature of the amorphous polymer being lower than the melting point of the second crystalline polymer. In the present description, the presence of the third phase polymer can increase the content of fiber structures having a high aspect ratio, and, on the basis of the advantages of high specific surface area, high crystallinity and high heat resistance, these fiber structures enable printed pieces obtained by 3D printing using the 3D printing material to have both high heat resistance and high anti-warp property.

The invention discloses a treatment device and a treatment method for wastewater in dinitrotoluene production. The treatment device comprises a first unit, a second unit, a mixing unit, an extraction separation unit, a wastewater stripping tower and a third phase separator, wherein the first unit and the second unit are arranged in parallel; the mixing unit, the extraction separation unit, the wastewater stripping tower and the third phase separator are positioned at the downstream of the first unit and the second unit; the first unit comprises a yellow water concentration tower, a first phase separator and a first water phase storage unit which are connected in sequence; the second unit comprises a sulfuric acid pre-concentration tower, a sulfuric acid concentration tower, a second phase separator and a second water phase storage unit which are connected in sequence; a gas phase outlet of the sulfuric acid pre-concentration tower is connected with the yellow water concentration tower; the first water phase storage unit and the second water phase storage unit are connected with the mixing unit. According to the invention, acidic washing water generated in the DNT purification process and a mixed phase obtained by separation after the reaction of mononitrotoluene are completed are respectively pretreated by the yellow water concentration tower and the sulfuric acid pre-concentration tower to recover nitric acid, so that the acid consumption is reduced, and the comprehensive utilization of energy is realized.

This invention relates to the field of hydrometallurgical technology and discloses a multi-metal stepwise leaching and extraction recovery process for molybdenum-lead ore. It aims to solve the problems of secondary precipitation of lead and molybdenum leading to metal loss, and severe emulsification caused by the co-leaching of impurities in existing mixed total dissolution processes. This invention mechanically activates the raw ore by introducing a grinding aid, sequentially implementing primary acidic potentiometric leaching and secondary alkaline oxidative synergistic leaching. Utilizing a specific coordination system and dual pH and potential control, it inhibits impurity dissolution and prevents lead-molybdenum interprecipitation. Subsequently, the molybdenum-rich mother liquor is acidified through a multi-stage pH gradient, combined with an amine system containing alcohol modifiers for stepwise extraction and back-extraction crystallization. This achieves highly selective sequential separation of lead and molybdenum, eliminates the third-phase emulsification phenomenon during extraction, ensures oil-water phase stability, and improves the single-metal leaching rate and product purity.

Disclosed in the present application are a cavity-customized carbon-silicon composite material, and a preparation method therefor and the use thereof. The cavity-customized carbon-silicon composite material comprises a core structure and a third-phase carbon coating layer wrapping around the core structure, wherein the core structure is a structure formed after pore-forming agent particles are removed from first intermediate product particles; the core structure has a customized cavity formed after the pore-forming agent particles are removed; the first intermediate product particles are compound particles formed by silicon particles, the pore-forming agent particles, first-phase carbon and second-phase carbon; the first-phase carbon is a carbon nanomaterial with a network structure; the second-phase carbon is a carbon substance derived from an organic compound; and the third-phase carbon is a carbon substance converted from tar and / or asphalt. The cavity-customized carbon-silicon composite material of the present invention can buffer the volume expansion effect of silicon particles, has a more stable structure, and can maximize the volume capacity and the energy density, while effectively improving the cycling stability.