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Method for fast determining molybdenum content in molybdenum raw ore

A rapid measurement and raw ore technology, applied in the direction of electrical excitation analysis, material excitation analysis, etc., can solve the problems of inability to achieve fast and low-cost detection, difficult to accurately control the measurement process, and complex molybdenum raw ore composition, achieving low pollution and easy operation. , good effect

Inactive Publication Date: 2018-11-02
JINDUICHENG MOLYBDENUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition of molybdenum raw ore is more complex, and the determination of molybdenum content is more difficult
At present, the determination methods of molybdenum content in raw molybdenum ore mainly include gravimetric method and spectrophotometric method, but these two methods have the defects of cumbersome determination steps, difficult to accurately control the determination process, many measurement interference factors, long measurement time and high measurement cost. The purpose of rapid and low-cost detection cannot be achieved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The method of the present embodiment comprises the following steps:

[0030] Step 1, prepare molybdenum raw ore sample solution: take 0.1009g molybdenum raw ore and place it in a 200mL beaker, then add 15mL hydrochloric acid solution and 5mL nitric acid solution, cover the beaker with a watch glass and carry out heat treatment to obtain molybdenum raw ore eluate, and molybdenum raw ore solution The raw ore stripping solution is filtered to obtain the molybdenum raw ore sample liquid; the mass fraction of the hydrochloric acid solution is 38%, and the grade is superior pure; the mass fraction of the nitric acid solution is 68%, and the grade is superior pure;

[0031] The concrete process of described heating is:

[0032] Step 101, heat the beaker covered with a watch glass, when the raw molybdenum ore sample undergoes a violent dissolution reaction for 10 minutes, cool to room temperature, rinse the inner wall of the beaker and the watch glass with water, and ensure tha...

Embodiment 2

[0043] The method of the present embodiment comprises the following steps:

[0044] Step 1, prepare molybdenum raw ore sample liquid: take 0.2003g molybdenum raw ore and place it in a 200mL beaker, then add 21mL of hydrochloric acid solution and 7mL of nitric acid solution, heat the beaker with a watch glass to obtain the molybdenum raw ore eluate, and put the molybdenum raw ore The raw ore stripping solution is filtered to obtain the molybdenum raw ore sample liquid; the mass fraction of the hydrochloric acid solution is 38%, and the grade is superior pure; the mass fraction of the nitric acid solution is 68%, and the grade is superior pure;

[0045] The concrete process of described heating is:

[0046] Step 101. Heat the beaker covered with a watch glass. When the raw molybdenum ore sample undergoes a violent dissolution reaction for 13 minutes, cool to room temperature, rinse the inner wall of the beaker and the watch glass with water, and ensure that all the washing liqui...

Embodiment 3

[0057] The method of the present embodiment comprises the following steps:

[0058] Step 1, prepare molybdenum raw ore sample solution: take 0.2498g molybdenum raw ore and place it in a 100mL beaker, then add 15mL hydrochloric acid solution and 5mL nitric acid solution, cover the beaker with a watch glass and carry out heat treatment to obtain the molybdenum raw ore eluate, and put the molybdenum raw ore The raw ore stripping solution is filtered to obtain the molybdenum raw ore sample liquid; the mass fraction of the hydrochloric acid solution is 38%, and the grade is superior pure; the mass fraction of the nitric acid solution is 68%, and the grade is superior pure;

[0059] The concrete process of described heating is:

[0060] Step 101. Heat the beaker covered with a watch glass. When the raw molybdenum ore sample undergoes a violent dissolution reaction for 12 minutes, cool to room temperature, rinse the inner wall of the beaker and the watch glass with water, and ensure ...

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Abstract

The invention discloses a method for fast determining the molybdenum content in a molybdenum raw ore. The method comprises the following steps of 1, performing heating treatment after the molybdenum raw ore acid addition to prepare molybdenum raw ore sample liquid; 2, preparing blank solution; 3, preparing a series of molybdenum solutions with the gradient concentration; 4, determining the emission intensity of the molybdenum standard solutions of different concentrations in an inductive coupling plasma emission spectroscopy instrument; drawing a molybdenum standard curve; 5, determining the emission intensity of the molybdenum raw ore sample liquid and the blank solution in the inductive coupling plasma emission spectroscopy instrument; next, obtaining the molybdenum concentration of themolybdenum raw ore sample liquid and the blank solution according to the molybdenum standard curve; performing calculation to obtain the molybdenum content in the molybdenum raw ore. The inductive coupling plasma spectroscopy method is used for determining the molybdenum content in the molybdenum raw ore; the molybdenum content determining time in the molybdenum raw ore is shortened from 4 h of the conventional weight method and spectrophotometric method to 1 h; the determining speed and the determining accuracy are greatly improved; the mass production and detection requirements of industrialand mining enterprises can be met.

Description

technical field [0001] The invention belongs to the technical field of element content analysis, and in particular relates to a method for quickly measuring molybdenum content in molybdenum raw ore. Background technique [0002] Molybdenum raw ore is used as a raw material for the production of molybdenum, molybdenum concentrate, ferromolybdenum and other products, and the content of molybdenum (Mo) needs to be determined. However, the composition of molybdenum raw ore is more complex, and the determination of molybdenum content is more difficult. At present, the determination methods of molybdenum content in raw molybdenum ore mainly include gravimetric method and spectrophotometry, but these two methods have the defects of cumbersome determination steps, difficult to accurately control the determination process, many measurement interference factors, long measurement time and high measurement cost. The purpose of rapid and low-cost detection cannot be achieved. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/68
CPCG01N21/68
Inventor 谢明明李康刘延波苏雄杨红忠王郭亮柴玉青
Owner JINDUICHENG MOLYBDENUM CO LTD
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