3 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.

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.