Assessment system for technical advancement of industry of extracting vanadium from stone coal

Abstract

The invention particularly relates to an assessment system for technical advancement of the industry of extracting vanadium from stone coal. The technical scheme is as follows: establishing the assessment system for the technical advancement of the industry of extracting vanadium from stone coal on the basis of the systematic assessment of the production cycle, and the operability, the particularity and the compatibility as the principle, and dividing the established assessment system for the technical advancement of the industry of extracting vanadium from stone coal into three layers, namely a target layer, a criterion layer and an index layer, wherein the target layer is the technical advancement index of the industry of extracting vanadium from stone coal; the criterion layer is the comprehensive assessment index of the industry of extracting vanadium from stone coal, including 3 qualitative indexes and 4 quantitative indexes; and the index layer is the basic assessment index for different processes of the industry of extracting vanadium from stone coal as the details of the index of the criterion layer, including 9 qualitative indexes and 17-20 quantitative indexes. The assessment system for the technical advancement of the industry of extracting vanadium from stone coal has the characteristics of good pertinence, obvious completeness and good operability, and can normalize the development of indexation management of production of the industry of extracting vanadium from stone coal and promote the sustainable development of the industry.

Description

technical field [0001] The invention belongs to the technical field of technological advancement evaluation system, and in particular relates to an evaluation system of technological advancement in the industry of vanadium extraction from stone coal. Background technique [0002] Stone coal is a unique vanadium resource in my country. With the increasing demand for vanadium in steel, chemical and other industries, the extraction of vanadium from stone coal has been paid more and more attention in my country. [0003] In terms of production technology, the vanadium extraction process from stone coal is mainly divided into pyro-wet combined process and wet process. Due to the special occurrence state of vanadium in stone coal, most of the stone coal needs to go through the combined pyro-wet process. The salt-added roasting method in the method can ensure a high yield and recovery rate of vanadium, but this method will discharge a large amount of chlorine and hydrogen chloride ...

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Problems solved by technology

[0003] In terms of production technology, the vanadium extraction process from stone coal is mainly divided into pyro-wet combined process and wet process. Due to the special occurrence state of vanadium in stone coal, most of the stone coal needs to go through the combined pyro-wet process. The salt-added roasting method in the method can ensure a high yield and recovery rate of vanadium, but this method will discharge a large amount of chlorine and hydrogen chloride gas and produce a large amount of high-salinity wastewater, while other processes have strict requirements on the raw ore, so At present, many stone coal vanadium extraction enterprises still use the sodium roasting technology that seriously pollutes the environment; in terms of pollution control, the production enterprises all adopt the method of terminal treatment for pollution prevention and control, but the terminal treatment has a large investment and high operating cost, and does not produce any benefits , so the enthusiasm of production enterprises is not high

[0004] The main reason for the above situation is that the stone coal vanadium extraction industry has no standards and technical specifications for production and pollution prevention and control. None of the choices has a sound and normative evaluation system, thus affecting the sustainable production of the industry

[0005] At present, although some people have started research in this area (Pan Yong. Process evaluation of vanadium extraction from stone coal, Mining Express, 2007 No. 4), (Liu Jinghuai. A review of the status quo of vanadium extraction from stone coal vanadium ore in my country, Hunan Nonferrous Metals, 2010 No. 5 Period), but only qualitative evaluation, the index system is not comprehensive, or only a simple quantitative evaluation (Yang Lin. Evaluation of vanadium-bearing rock clean vanadium extraction process, metal mines, 2010 No. 11), pertinence and operability Not strong, so the expected evaluation objectives cannot be achieved

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