CN102391904A - Technology for increasing value of stone coal and extracting valuable metal elements - Google Patents
Technology for increasing value of stone coal and extracting valuable metal elements Download PDFInfo
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- CN102391904A CN102391904A CN2011103031597A CN201110303159A CN102391904A CN 102391904 A CN102391904 A CN 102391904A CN 2011103031597 A CN2011103031597 A CN 2011103031597A CN 201110303159 A CN201110303159 A CN 201110303159A CN 102391904 A CN102391904 A CN 102391904A
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Abstract
The invention relates to a process and equipment for producing clean burning coal with high burning value and valuable metal elements by using stone coal as a raw material aiming at the characteristics of wide distribution range, high storage quantity, low burning value, high moisture content and many valuable metal elements of domestic stone coal. The process comprises the following steps of: mechanically crushing the stone coal to prepare clean coal powder, and performing solid-liquid separation on stone coal slurry by acid leaching and extraction; performing desulfuration, oil (mixed oil) blending and dehydration treatment on the separated stone coal slurry, and processing the stone coal slurry into granular clean coal with high burning value for the industries of power generation and the like; and reducing the separated extract, and extracting the valuable metal elements such as vanadium and the like to be processed into raw materials in related industries from the extract.
Description
Technical field
The present invention relates to production technology and technology coal-fired with the bone coal and extraction valuable metal element for raw material production high burning-value cleaning.
Background technology
Japanese Patent (spy opens flat 7-233383 communique) has been described and has been used low grade coal to be solid-fuelled production technology of raw material production and method.The working method that this patent is described is divided into 4 steps:
1) the raw material low grade coal is carried out broken ball milling;
2) mixing oil of mixing heavy oil and solvent oil prepares slurry;
3) slurry is carried out thermal dehydration (mixing oil of heavy oil and solvent oil fully is filled in the short texture of low grade coal);
4) to slurry carry out solid-liquid separation obtain high burning-value coal-fired with can reusable mixing oil.
In addition, above-mentioned patent discloses also how to prepare the high burning-value cleaning that has low pyrophoricity, is convenient to transport and store coal-fired.Concrete production unit has:
The mixing oil and the low grade coal that 1) will comprise heavy oil composition and solvent oil composition carry out the blended tempering tank;
2) to the vaporizer of mixed slurry thermal dehydration;
3) slurry after the heating is carried out the solid separator of solid-liquid separation.
Summary of the invention
To domestic bone coal have a very wide distribution, reserves are big, combustion value is low, water content is high but the associated valuable metals element is many etc. characteristics, specially apply for the present invention.The present invention relates to the production technique and the equipment of and valuable metal element coal-fired for raw material production high burning-value cleaning with the bone coal.At first bone coal is carried out Mechanical Crushing preparation cleaning coal dust, then coal dust is carried out acidleach, extraction, carry out solid, liquid after the extraction and separate.Solid after the separation through desulfurization, mix oil (mixing oil) and processed, be processed into particulate state high burning-value clean coal; Liquid after the separation reduces processing, extracts valuable metal element such as vanadium etc.The present invention accomplishes through a large amount of experimental studies, and mining company's (referring to example 1), Huaihua mining company (referring to example 2), company's business enterprise expands such as (referring to the examples 3) application already of the western Hunan two tame vanadium in Yiyang obtains obvious benefit.
This invention relates to a kind of coal-fired production technique and equipment of raw material production high burning-value cleaning that is with the bone coal, and following characteristics are arranged:
1) the raw material bone coal is carried out two-stage fragmentation, one-level circle mill;
2) the powdery bone coal is carried out acidleach and extraction;
3) the bone coal slurry after the extraction being carried out solid, liquid separates;
4) solid (bone coal slurry) after separating is carried out desulfurization, after mix oil (mixing oil), dehydration, the separating treatment, is processed into particulate state high burning-value clean coal;
5) to after the processing such as the liquid (extraction liquid) after separating reduces, therefrom extract valuable metal such as vanadium etc.
Production unit mainly comprises:
1) the bone coal lump ore is carried out coarse crushing, jaw crusher in small, broken bits and circle grinding machine;
2) the powdery bone coal is carried out the anticorrosion steel reinforced concrete pool and the stirrer of acidleach and extraction;
3) to the tempering tank that the bone coal slurry carries out desulfurization, mix oil (mixing oil) handled after separating;
4) to the vaporizer of mixed bone coal slurry thermal dehydration;
5) bone coal after the dehydration is carried out oil (mixing oil), the isolating whizzer of coal;
6) extraction liquid after separating is reduced the anticorrosion steel reinforced concrete pool handled and stirrer etc.
Description of drawings
Fig. 1 is the concrete technological process of production that is used to produce high burning-value clean coal and valuable metal element of the present invention.
Embodiment
To the bone coal distribution in Hunan and the situation of the contained various valuable elements of bone coal itself, the present invention achieves the above object, and has obtained successful Application in the enterprise of a few family in the Hunan Province through TE.At first through the raw material bone coal is carried out comminution, acidleach, extraction, realize that solid, liquid separates (be bone coal with valuable metal element separate).Then, the slurry of the bone coal after the extraction is carried out desulfurization and promotes the processing of combustion value to obtain the high burning-value clean coal; Liquid-phase extraction liquid is reduced processing, to obtain valuable metal element such as vanadium etc.
Example 1: the original production technique of Yiyang mining company is to utilize extracting vanadium by stone coal wet method; Bone coal slurry after the extraction all is used as the direct air storage of waste residue, will take more than 20 mu of soil every year, not only wastes resource; Increase operation cost of enterprises, but also ecotope has been caused baneful influence.The said firm transforms original technology after using patent art, successfully is converted into the high-quality fire coal to the bone coal slurry, has not only improved economic benefit of enterprises, has also realized " zero release " of pollutent basically, has alleviated environmental stress.
Example 2: Huaihua mining company utilizes extracting vanadium from stone coal, and design technology flow process originally is through vanadium extraction of bone coal pyrogenic process and cogeneration comprehensive utilization.But because " three wastes " are difficult to reach emission standard, environmental impact assessment can't pass.The said firm transforms former technology after introducing technology of the present invention, become the pyrogenic process vanadium extraction into the wet method vanadium extraction, add bone coal increment generating.Enterprise has not only passed through the project environmental impact assessment after changing technology, and the benefit after the operation is considerable.
Example 3: the western Hunan two tame vanadium already company are the pyrogenic process vanadium extraction enterprises of years experience, and " three wastes " are not up to standard for a long time, and bigger to its surrounding enviroment pollution, masses' suggestion is very big.In recent years, local government has strengthened environment supervision law enforcement dynamics, makes this two tame enterprise face the danger of closing down bankruptcy.After they introduce patent art and carry out technological transformation, not only realized waste gas " zero release " and waste liquid recycle, waste residue has also become the steam coal of high burning-value.Meanwhile, the comprehensive recovery of vanadium has also been brought up to more than 75% by original about 60%, has significantly improved economic benefit of enterprises.
Technology of the present invention the situation that the bone coal powder is piled up can not occur in pipeline.Because the inner wall surface of mixing oil between cooling and drying nest flows, and near the inlet of cooling segment, stone coal powder just was flushed away before adhering to inner-walls of duct.Control mixing oil mobile frequency and speed on the inner-walls of duct surface can prevent the generation of stopping up in the pipeline to a certain extent, thereby make mixing oil mobile smoothly.If flow can also make mixing oil arrive high-temperature evaporation part (the other end) along the inner-walls of duct surface flow greatly, reheated vaporization, get into cooling segment then again.Therefore, select suitable flow velocity can effectively control the required energy consumption of vaporization mixing oil.In addition, when the mixed oil and gas after the vaporization is directed into cooling duct, should keep the thermograde of pipeline constant, so can avoid cooling duct to stop up.In addition, dust collection device can be set in the middle of the pipeline between drying and the cooling segment,, thereby prevent to stop up with the content of bone coal powder in the mixed oil and gas of minimizing vaporization back.
Mixing oil in the cooling segment can carry out solid-liquid separation through mechanical separator.The mixing oil of separating can be in the inner-walls of duct surface flow, and cooled mixing oil can impel condensation process with after oil gas contacts.Mixing oil after the separation can mix with raw material bone coal slurry again, recycles.
According to production unit of the present invention, and implement, can reach the effect of existing like product according to the process for extracting operation of solid-fuelled method of manufacture of the present invention and valuable metal element.
Claims (4)
1. one kind is raw material production high burning-value cleaning fire coal and production technology and the technology that can therefrom extract the valuable metal element with the bone coal.
2. production technology according to claim 1 and technology is characterized in that: 1) the raw material bone coal is carried out two-stage fragmentation, one-level circle mill; 2) the powdery bone coal is carried out acidleach and extraction; 3) the bone coal slurry after the extraction being carried out solid, liquid separates; 4) solid (bone coal slurry) after separating is carried out desulfurization, after mix oil (mixing oil), dehydration, the separating treatment, is processed into particulate state high burning-value clean coal; 5) to after the processing such as the liquid (extraction liquid) after separating reduces, therefrom extract valuable metal such as vanadium etc.
3. production technology according to claim 1 and technology, corresponding production equipment comprises: 1) the bone coal lump ore is carried out coarse crushing, jaw crusher in small, broken bits and circle grinding machine; 2) the powdery bone coal is carried out the anticorrosion steel reinforced concrete pool and the stirrer of acidleach and extraction; 3) tempering tank that the bone coal slurry after separating is carried out desulfurization, mixes oil and handle; 4) to the vaporizer of mixed bone coal slurry thermal dehydration; 5) bone coal after the dehydration is carried out oil (mixing oil), the isolating whizzer of coal; 6) extraction liquid after separating is reduced the anticorrosion steel reinforced concrete pool handled and stirrer etc.
4. production technology according to claim 1 and technology, the characteristic of its production process is: 1) accumulation and the obstruction of fine powder can not take place in pipeline; 2) mixing oil can recycle, and reduces starting material and energy consumption; 3) the coal-fired value with the valuable metal element of cleaning can reach the effect of existing like product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103031597A CN102391904A (en) | 2011-10-10 | 2011-10-10 | Technology for increasing value of stone coal and extracting valuable metal elements |
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| CN2011103031597A CN102391904A (en) | 2011-10-10 | 2011-10-10 | Technology for increasing value of stone coal and extracting valuable metal elements |
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| CN102391904A true CN102391904A (en) | 2012-03-28 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07233383A (en) * | 1993-12-27 | 1995-09-05 | Kobe Steel Ltd | Solid fuel using porous coal as raw material, its production and apparatus for production |
| CN101054635A (en) * | 2007-05-28 | 2007-10-17 | 德物华经济信息研究院有限公司 | Method for extracting vanadium pentoxide from Stone-like coal vanadium ore and special device for the same |
| KR20080105885A (en) * | 2007-06-01 | 2008-12-04 | 하이하모니(주) | Apparatus for processing liquid fuel mixed by coal, oil and water, method of processing mixed liquid fuel and mixed liquid fuel thereof |
| CN101445271A (en) * | 2009-01-04 | 2009-06-03 | 李乾宽 | A method of producing vanadic oxide by using ore containing vanadium or SLAG containing vanadium |
| CN101921912A (en) * | 2010-03-04 | 2010-12-22 | 北京天瑞利达科技发展有限公司 | Concentrated acid two-stage curing-gas liquid cyclic vanadium extraction process from stone coal |
| CN101935768A (en) * | 2010-09-16 | 2011-01-05 | 中南大学 | Method for comprehensively recovering carbon from extraction of vanadium from stone coal |
-
2011
- 2011-10-10 CN CN2011103031597A patent/CN102391904A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07233383A (en) * | 1993-12-27 | 1995-09-05 | Kobe Steel Ltd | Solid fuel using porous coal as raw material, its production and apparatus for production |
| CN101054635A (en) * | 2007-05-28 | 2007-10-17 | 德物华经济信息研究院有限公司 | Method for extracting vanadium pentoxide from Stone-like coal vanadium ore and special device for the same |
| KR20080105885A (en) * | 2007-06-01 | 2008-12-04 | 하이하모니(주) | Apparatus for processing liquid fuel mixed by coal, oil and water, method of processing mixed liquid fuel and mixed liquid fuel thereof |
| CN101445271A (en) * | 2009-01-04 | 2009-06-03 | 李乾宽 | A method of producing vanadic oxide by using ore containing vanadium or SLAG containing vanadium |
| CN101921912A (en) * | 2010-03-04 | 2010-12-22 | 北京天瑞利达科技发展有限公司 | Concentrated acid two-stage curing-gas liquid cyclic vanadium extraction process from stone coal |
| CN101935768A (en) * | 2010-09-16 | 2011-01-05 | 中南大学 | Method for comprehensively recovering carbon from extraction of vanadium from stone coal |
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Application publication date: 20120328 |