Features

• Low loss and anti-interference:
• It uses an adaptive resonant full-bridge PWM control IC with zero voltage delay control. A high-efficiency resonant inductor ensures IGBT achieves ZVS in nearly all conditions. This reduces IGBT loss by 40% and improves EMC characteristics. It also minimizes interference to the power grid and the supply itself.
• Small size and high precision:
• High-frequency, low-saturation-voltage IGBTs enable third-gen switching power supplies to operate faster than second-gen versions. Higher frequency reduces magnetic material size. Low saturation voltage further decreases IGBT loss.
• Fast response:
• Stable width and hot backup technology eliminate reaction delay. Parallel units operate at identical frequency/phase. If a unit fails, remaining units stabilize total output current to settings within <30ms.

Description

Rare earth hydrometallurgy is a kind of chemical metallurgy. Most of the whole process is in solution and solvent. For example, the decomposition of rare earth concentrate, rare earth oxides, rare earth compounds and the separation and extraction of single rare earth metal are chemical separation processes such as precipitation, crystallization, REDOX, solvent extraction and ion exchange. At present, organic solvent extraction is widely used, which is a common process for industrial separation of high purity single rare earth elements. Hydrometallurgy process is complex, product purity is high, the method of production of finished products wide application.

Pyrometallurgical process is simple and has high productivity. Rare earth pyrometallurgy mainly includes silicon thermal reduction method to obtain rare earth alloy, molten salt electrolysis method to obtain rare earth metal or alloy, metal thermal reduction method to obtain rare earth alloy. The common characteristic of pyrometallurgy is production under high temperature.

Industrial production of mixed rare earth metals employs molten salt electrolysis. The method heats/melts compounds (e.g., rare earth chlorides), then electrolyzes them to deposit metals on cathodes. Two approaches: chloride or oxide electrolysis. Methods for preparing single rare earth metals vary from element to element. Because of high vapor pressure, samarium, europium, ytterbium and thulium are not suitable for electrolysis, but reduction distillation is used. Other elements can be prepared by electrolysis or metal thermal reduction.

Parameters

Optional models

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