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Method for rapidly and continuously measuring multiple elements in ferronickel

A determination method and multi-element technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems that cannot meet the control time limit requirements of pyrometallurgy process, there are many kinds of chemical reagents, and the analysis time is long, so as to ensure the uniformity of samples , high practical value, and good application prospects

Pending Publication Date: 2021-03-19
JINCHUAN GROUP LIMITED
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Problems solved by technology

[0008] However, the above-mentioned analysis method has the following disadvantages: the analysis takes a long time, cannot meet the process control time limit requirements of pyrometallurgy (within 2 hours), and requires many staff, low efficiency, many types of chemical reagents involved, and high cost

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  • Method for rapidly and continuously measuring multiple elements in ferronickel
  • Method for rapidly and continuously measuring multiple elements in ferronickel
  • Method for rapidly and continuously measuring multiple elements in ferronickel

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Embodiment Construction

[0029] 1. Determination steps

[0030] The present invention provides a complete method for realizing XRF multi-element rapid joint measurement of Ni, Fe, Si, Co, Cr, S, P in ferronickel, which specifically includes the following steps:

[0031] (11) Sampling of samples to be tested

[0032] In the nickel-iron melt discharge chute of the nickel-iron electric furnace, use a high-temperature ceramic fiber sampling spoon to take out the nickel-iron melt (about 280g) from the flowing nickel-iron melt, pour it into a sampling mold (made of cast iron), Cool quickly by dipping in water, and pour out the nickel-iron-like ingot.

[0033] Among them, the ferronickel melt collected during sampling must be quickly poured into the mold and cooled by dipping in water quickly to prevent segregation that may be caused by slow cooling.

[0034] The geometric dimensions of the sample ingot are: a cylindrical body with a length of 600mm*upper φ35mm*lower φ33mm; put the sample ingot into a samp...

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Abstract

The invention relates to a method for rapidly and continuously measuring multiple elements in ferronickel. Themethod is provided for a process for producing ferronickel by pyrogenic reduction smeltingof laterite-nickel ore. The method comprises the following steps of: directly sampling flowing ferronickel melt, rapidly cooling a sample and pouring out a ferronickel sample ingot; using a diamond blade for cutting the ferronickel sample ingot into a sample sheet with a thickness of 3-4 mm; and measuring the spectral intensity of Ni, Fe, Si, Co, Cr, S and P in the sample sheet to be measured, and determining the content of each element according to pre-stored standard working curves. With the method adopted, rapid determination of each component in the ferronickel is realized; joint determination of multiple elements or components of one sample can be can completed within 40 min; the defects of single-element single-method determination in traditional methods can be eliminated, and jointdetermination of primary components and secondary components is realized. Compared with the national standard, the method can save the sample analysis time by more than 4 hours and has the advantagesof high detection and analysis speed, high labor efficiency, low analysis cost, environmental friendliness, simple and convenient operation, good application prospect and high practical value.

Description

technical field [0001] The invention relates to the field of chemical analysis and detection of ferronickel produced by reduction of laterite ore, in particular to a rapid and continuous determination method for multiple elements in ferronickel. Background technique [0002] Due to the mature technology for the development of nickel sulfide resources, the development of nickel metal has been mainly based on nickel sulfide resources for a long time, but the long-term exploitation of nickel sulfide resources has caused its stock to decline sharply. In the past 30 years, new nickel sulfide resources have been explored. Without a major breakthrough, the nickel metallurgical industry, which takes nickel sulfide as its development object, is gradually falling into a dilemma. Laterite nickel ore is undoubtedly a new choice. At the same time, iron and steel metallurgical enterprises are interested in reducing the production cost of stainless steel products Therefore, the development...

Claims

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Application Information

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IPC IPC(8): G01N23/223G01N23/2206G01N23/2202
CPCG01N23/223G01N23/2206G01N23/2202G01N2223/071G01N2223/076G01N2223/1016G01N2223/3037G01N2223/652
Inventor 王纪华胡凤萍孔令军王万涛
Owner JINCHUAN GROUP LIMITED
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