Determination method for cadmium amount in copper slag

A technology of copper slag and constant volume, which is applied in the detection field, can solve problems such as unsuitable for popularization and application, many interfering elements, and high analysis cost, and achieve the effects of good precision, fast analysis speed, and accurate and reliable data
CN104049028AActive Publication Date: 2014-09-17BAIYIN NONFERROUS GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BAIYIN NONFERROUS GROUP
Publication Date
2014-09-17

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Abstract

The invention discloses a determination method for cadmium amount in copper slag. The determination method disclosed by the invention adopts an oscillographic polarography which comprises the following steps: taking hydrochloric acid-ammonium acetate as a base solution, pouring a prepared sample solution into an electrolysis cup for oscillographic polarograph photoplotting, and anodizing dipolar derivative waves, starting scanning when an origin potential is -224 mV, and measuring an output peak value; transferring and taking a pure cadmium standard solution along with a sample to obtain the output peak value of the pure cadmium standard solution; calculating the cadmium content in the copper slag sample by using a standard contrast method according to the concentration and the output peak value of the standard solution. Compared with a classic hydrochloric acid base solution method and an ammoniacal base solution method, the analysis method for determining the cadmium amount in copper slag by using the oscillographic polarography disclosed by the invention is stable in waveform and quite high in accuracy; the method is easy and fast, and also eliminates the influence of ammonia gas on a human body; moreover, the determination method is good in precision and high in analysis speed, can meet the requirement for rapid analysis in production, meanwhile provides accurate and reliable data, so as to play a good role in guiding production.
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Description

technical field

[0001] The invention relates to a detection method, in particular to a method for quickly and accurately measuring the cadmium content in copper slag in a liquid cleaning workshop. Background technique

[0002] In the zinc hydrometallurgy process, copper cadmium slag is produced when the zinc sulfate solution is purified, and the copper cadmium slag mainly contains valuable metal elements such as copper, cadmium, and zinc. The comprehensive recovery of these valuable metal elements can not only comprehensively utilize raw materials and protect the environment, but also increase the metal recovery rate and reduce production costs. The product after recovering the valuable metal zinc and cadmium from copper cadmium slag is copper slag. For the determination of cadmium in copper slag, atomic absorption spectrometry has been used to determine the amount of cadmium. This method has large analysis errors and many interfering elements; ICP- The determination result...

Claims

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