Method for separating ternary alloy of lead, tin and stibium

A ternary alloy and lead separation technology, applied in the direction of improving process efficiency, etc., can solve problems such as long segregation time, easy oxidation of antimony, intermittent operation, etc., achieve good separation effect, high recovery rate, and simplify the process.
CN101696475AInactive Publication Date: 2010-04-21KUNMING UNIV OF SCI & TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
KUNMING UNIV OF SCI & TECH
Publication Date
2010-04-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for separating a ternary alloy of lead, tin and stibium, which adopts a vacuum distillation method to treat the ternary alloy of lead, tin and stibium, wherein the distillation temperature is controlled at 900 to 1,200 DEG C, the distillation time is 40 to 60min and the vacuum degree is 5 to 15 Pa. The three components in the alloy are distilled in one step, then the tin of a high boiling point is kept in a liquid state, and the lead and the stibium of a low boiling point are volatilized from the alloy in a gas state so as to be separated from the liquid tin. The method can reduce the content of the lead and the stibium in the lead to be less than 1 percent, and the recovery rates of the lead, tin and stibium are over 98 percent.
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Description

[0001] 1. Technical Field: The present invention relates to a method for separating lead-tin-antimony ternary alloy, which belongs to the technical field of non-ferrous vacuum metallurgy. 2. Background technology

[0002] Lead-tin-antimony ternary alloy appears in the process of lead smelting, tin smelting, and antimony smelting. The ternary alloy has a wide range of uses. With the increasing number of waste secondary resources, the alloy has been separated, recycled and reused. Without delay. At present, tin-based alloys often use oxidation blowing and alkaline refining methods to remove antimony. The principles of these two methods are based on the different affinity of these elements with oxygen to remove and separate impurities. The disadvantage of these two methods is that the antimony element becomes the oxide antimony white (Sb 2 O 3 ), if elemental antimony is required, reduction smelting is required. Antimony in alkaline refining is Na 3 SbO 4 The form of slag floats on...

Claims

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