Preparation method of industrial molybdenum oxide chemical standard sample

A technology of industrial molybdenum oxide and standard samples, which is applied in the preparation, sampling, and scientific instruments of test samples, can solve the problems of no standard samples, etc., and achieve the effects of wide application range, precise determination method, and reliable process

Pending Publication Date: 2020-03-17
JINDUICHENG MOLYBDENUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the trade process of industrial molybdenum oxide, its related elements need to be detected, but there is no standard sample to rely on, so it is necessary to develop chemical standard samples of industrial molybdenum oxide

Method used

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  • Preparation method of industrial molybdenum oxide chemical standard sample
  • Preparation method of industrial molybdenum oxide chemical standard sample
  • Preparation method of industrial molybdenum oxide chemical standard sample

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Embodiment 1

[0038] This embodiment includes the following steps:

[0039] Step 1: Analyze the particle size of industrial molybdenum oxide with a laser particle size distribution analyzer, select industrial molybdenum oxide with a particle size of less than 150 μm as the raw material, and then use a 30B high-efficiency pulverizer to grind and crush the raw material. The feeding speed is 2kg / m, and each batch of feeding The amount is 100kg, and then the ZS-650 type high-efficiency vibrating sieve (equipped with a standard sieve with an aperture of 75 μm) is sieved to obtain an undersize powder with a particle size less than 75 μm; the chemical composition and content of the industrial molybdenum oxide are as follows in Table 2 shown.

[0040] Chemical composition and mass content in the industrial molybdenum oxide of table 2 embodiment 1

[0041] element or ingredient Mo SiO 2

P Cu Pb Mass content (%) 60.0～65.0 0.80～1.5 0.005～0.01 0.02～0.05 0.02～0.05 ...

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PUM

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Abstract

The invention discloses a preparation method of an industrial molybdenum oxide chemical standard sample. The method comprises the following steps: 1, selecting industrial molybdenum oxide and carryingout grinding, crushing and screening to obtain screen underflow powders; 2, uniformly mixing the screen underflow powders to obtain industrial molybdenum oxide powders; 3, sampling the industrial molybdenum oxide powders and carrying out preliminary uniformity inspection, carrying out subpackaging after the inspection result is qualified, then, carrying out sampling, sequentially performing uniformity inspection and collaborative valuing, performing mathematical statistics according to a collaborative valuing result, taking the industrial molybdenum oxide powders with qualified results as theindustrial molybdenum oxide chemical standard sample, and calculating uncertainty of characteristic values of the industrial molybdenum oxide powders. The industrial molybdenum oxide chemical standard sample prepared by the method is similar to or even the same with molybdenum oxide in production in composition and content; the method for determining the characteristic value elements or components is accurate; and the method solves the problem of lack of industrial molybdenum oxide chemical standard samples for determining the contents of main molybdenum and impurity elements of industrial molybdenum oxide in the prior art, and is wide in application range.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal analysis, and in particular relates to a method for preparing an industrial molybdenum oxide chemical standard sample. Background technique [0002] Industrial molybdenum oxide, also known as roasted molybdenum concentrate and molybdenum calcine, is not only the main molybdenum product added to the alloy, but also the raw material for the production of ferromolybdenum and ammonium molybdate, and belongs to the national strategic reserve materials. [0003] At present, the standard samples of molybdenum concentrate, molybdenum ore and ferromolybdenum that can be queried include: standard samples for molybdenum ore and concentrate composition analysis (GBW07141, GBW07142, GBW07143, GBW07144); molybdenum concentrate composition analysis standard samples (GBW07199); Iron (YSBC28632-2010). However, these standard materials are far from the main molybdenum content, impurity element content req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N21/31G01N21/3563G01N21/73
CPCG01N1/286G01N21/31G01N21/3103G01N21/3563G01N21/73G01N2001/2866G01N2021/3572
Inventor 谢明明刘延波历学武王培华刘建平杨红忠
Owner JINDUICHENG MOLYBDENUM CO LTD
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