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An amplification method for a metallurgical process

A reaction process, a single technology, applied in chemical instruments and methods, chemical/physical processes, chemical/physical/physical-chemical processes, etc., can solve the problem of unclear research on the coupling dependence of reaction characteristics, mismatch of reaction characteristics and reactor characteristics, etc. problems, to achieve the effect of simplifying the establishment, wide application scope, and solving the establishment difficulties

Pending Publication Date: 2019-04-05
NORTHEASTERN UNIV LIAONING
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  • Description
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Problems solved by technology

However, in the existing step-by-step empirical amplification method and mathematical model amplification method, the research on the reaction characteristics in the reactor, the characteristics of the reactor itself, and the coupling dependence between the two is not clear, which leads to the actual The reaction characteristics after amplification do not match the characteristics of the reactor, which has become a technical bottleneck restricting the reliable and efficient scale-up of the reactor

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  • An amplification method for a metallurgical process

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Experimental program
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Effect test

Embodiment

[0036] Metallurgical process scale-up research platform and scale-up process see figure 1 .

[0037] step one:

[0038] Based on metallurgical macrodynamics, using one or more methods of differential thermal analysis, thermogravimetric analysis, and differential scanning calorimetry, taking into account the transport effect of substances, explore metallurgical macroscopic chemical reactions To investigate the quantitative relationship between the efficiency of the chemical reaction and multiple influencing factors, and to establish the overall rate equation of the metallurgical reaction between different factors and the reaction effect, that is, R=f(P, T, C, X) ; Among them, R is the reaction rate of the metallurgical reaction process, f is the functional relationship, P is the pressure, T is the temperature, C is the concentration, and X is other influencing factors; in the metallurgical reaction process, the main link of controlling the reaction rate is clarified, and the r...

specific Embodiment 1

[0049] In this embodiment, the "thin material principle" is introduced, and an amplification method with temperature effect as the main contradiction in the metallurgical reaction process is established.

[0050] The specific process is:

[0051] Boron-rich slag is boron-containing waste slag produced by blast furnace ironmaking, with a boron content of about 12%, and is an ideal raw material for industrial boron extraction. However, the boron-rich slag obtained at high temperature has low activity after cooling, so it is not suitable for boron extraction raw materials.

[0052] step one:

[0053] From the perspective of macroscopic metallurgical kinetics, the relationship between the metallurgical reaction process and temperature of boron-rich slag at different cooling rates was analyzed by chemical composition. The relationship is:, η B =61.21+1.25ΔT (ΔT variation range: 2°C / min~20°C / min), where η B is the utilization rate of boron-rich slag after cooling, and ΔT is the t...

specific Embodiment 2

[0063] In this example, an amplification method with the concentration distribution effect as the main contradiction under the solid-liquid mechanical stirring system was established, and an amplification method for separating the alumina seed tanks was invented.

[0064] The specific process is as follows: the seed crystal decomposition of sodium aluminate solution is one of the key processes in the production of alumina by the Bayer process. It not only affects the quantity and quality of the product alumina, but also directly affects the cycle efficiency and other processes. Seed decomposition is the process of precipitation of solid aluminum hydroxide from sodium aluminate solution, which is a solid-liquid two-phase reaction. The mechanical stirring introduced here can not only ensure the uniformity of solid particle distribution, but also ensure the uniformity and stability of the liquid phase concentration and reaction temperature in the reaction system. Using a combinat...

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Abstract

The invention discloses a metallurgical process amplification method, and belongs to the field of metallurgy and chemical equipment research and amplification. The method comprises the following steps: determining a total packet rate equation by applying a metallurgy macroscopic reaction dynamics research method, and determining the most critical process steps influencing the reaction rate to obtain reaction characteristics; Determining the physical field characteristics of the reactor by utilizing a physical simulation and / or numerical simulation method, and optimizing the reactor; Determining a single factor of the reaction period according to the reaction characteristics and the physical field characteristics of the reactor; Determining a single factor amplification criterion accordingto the influence relationship of the metallurgical reaction process; A pilot scale test result is solved by utilizing a thermal state experiment or an analog simulation means, an amplification criterion is verified, an amplification scheme is obtained, industrialization is carried out, and amplification of the metallurgical process is completed. The method is a metallurgical process amplificationmethod based on the 'adaptation theory' and the 'single factor' principle. The method is wide in application range and simpler and more convenient in practical application.

Description

technical field [0001] The invention belongs to the field of research and amplification of metallurgical and chemical equipment, and in particular relates to an amplification method of a metallurgical process. Background technique [0002] The green, large-scale, integrated and intelligent development of the metallurgical industry requires not only a pollution-free, low-energy, short-process, and economical green metal extraction process, but also a large-scale, large-scale process that matches the process. Modernized metallurgical reaction equipment. The analysis and amplification of the metallurgical process is an important guarantee for the smooth production process and the economic benefits of the enterprise, and it is also the only way to apply the scientific research results from the laboratory stage to industrial production. Due to the imperfect scientific research system and the lack of analysis and detection technology, the traditional reactor amplification work of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2119/08G06F30/23G06F2119/14B01J8/007B01J19/087B01J19/0066G06F30/28G06F2111/10
Inventor 张廷安豆志河刘燕张子木赵秋月吕国志牛丽萍张伟光傅大学
Owner NORTHEASTERN UNIV LIAONING