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Online rapid detection method for molybdenum content

A detection method and content technology, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve problems such as poor reliability, inaccuracy, and high temperature

Inactive Publication Date: 2011-02-09
JIANGXI COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In industrial production, the temperature of the primary ammonia immersion solution is very high, and the method of measuring the specific gravity with a hydrometer to control the molybdenum content has large errors and is inaccurate
Especially when the molybdenum content of the primary ammonia immersion solution in production is closer to the upper and lower limits required by the process, that is, the closer to 130 grams per liter or 160 grams per liter, the more reliable the molybdenum content measured by this method is. Difference

Method used

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Examples

Experimental program
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Embodiment Construction

[0005] The present invention is described in further detail below in conjunction with example: In 5 25 milliliter test tubes that 5 milliliters of distilled waters are pre-installed, drip a drop of molybdenum content with respectively 130 grams per liter, 140 grams per liter, 150 grams per liter, respectively, with a plastic head dropper gram per liter and 160 grams per liter of molybdenum standard solution and ammonia leaching solution to be tested, then add 5 milliliters of sulfuric acid-copper sulfate-oxalic acid mixed solution respectively, the added sulfuric acid-copper sulfate-oxalic acid mixed solution is 2000 milliliters volume concentration is Add 2.0 grams of oxalic acid and 20 milliliters of copper sulfate solutions with a copper ion concentration of 20 milligrams per milliliter in the 50% sulfuric acid solution, make them mix uniformly, and then add 5 milliliters of potassium thiocyanate-thiourea mixed solutions respectively, and add Potassium thiocyanate-thiourea m...

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Abstract

The invention discloses an online rapid detection method for molybdenum content, and aims to provide a method which is reasonably designed, simple, and easily implemented, and simultaneously can accurately and rapidly measure the molybdenum content of primary ammonia leaching solution. An implementation scheme comprises the following steps of: respectively adding sulfuric acid-copper sulphate-oxalic acid mixed solution into a plurality of molybdenum standard liquids with different molybdenum contents; respectively mixing uniformly; respectively adding potassium rhodanide-thiocarbamide mixed solution into the molybdenum standard liquids; respectively mixing uniformly again; respectively observing the color of each molybdenum standard liquid; adding the sulfuric acid-copper sulphate-oxalic acid mixed solution into a primary ammonia leaching solution to be detected; after mixing uniformly, adding the potassium rhodanide-thiocarbamide mixed solution into the primary ammonia leaching solution to be detected; after mixing uniformly, observing the color of the primary ammonia leaching solution; and comparing the color of the primary ammonia leaching solution with the colors of each of the molybdenum standard liquids, wherein if the color of the primary ammonia leaching solution is among the colors of each of the molybdenum standard liquids, then the molybdenum content of the primary ammonia leaching solution is qualified.

Description

technical field [0001] The invention relates to a primary ammonia immersion solution, in particular to an online rapid detection method for molybdenum content. Background technique [0002] In the production process of ammonium molybdate, the process requires the content of molybdenum in the ammonia immersion solution to be 130-160 grams per liter. Too high or too low will make the operation of the acid precipitation process more difficult, and the relevant technical parameters are inconvenient to control and the product quality is relatively poor. . The current method of measuring specific gravity with a hydrometer is a detection method based on the molybdenum content at room temperature (25 degrees Celsius). In industrial production, the temperature of the primary ammonia immersion solution is very high, and the method of measuring the specific gravity with a hydrometer to control the molybdenum content has large errors and is inaccurate. Especially when the molybdenum c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 秦仁睿
Owner JIANGXI COPPER
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