CN101081989A - Coal coking blending method - Google Patents
Coal coking blending method Download PDFInfo
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Abstract
The present invention is coking blend method with gas coal, and different kinds of coking coal with required vitrinite reflectance distribution are blended. The blended coals include gas-fat coal 5-10 wt%, fat coal 5-20 wt%, 1/3 coking coal 30-45 wt%, coking coal 30-45 wt% and lean coal 10-18 wt%. The method of the present invention has reasonable utilization of the coking coal resource, accurate coal blending and high coke quality.
Description
Technical field
The present invention relates to coke making and coal blending technical field, particularly coke making and coal blending method.
Background technology
China's coking coal mainly is divided into bottle coal, gas-fat coal, 1/3 coking coal, rich coal, coking coal, lean coal and meager lean coal.Other coal is coke making and coal blending coal commonly used except that bottle coal and meager lean coal, and the allocation ratio constituent parts of every kind of coking coal is determined with coal situation and experience according to oneself.Up to now, the coke that produce definite quality does not also have quantitative rule to follow.
In short supply day by day along with coking coal resource, it is complicated that the quality of coking coal becomes, and tradition judges that single method of planting the coking coal quality and carrying out coke making and coal blending is restricted, and causes misleading for the use of coking coal, causes coke making and coal blending work difficulty day by day.This is mainly due to China existing judgement and the many and complicated situation of application method incompatibility China coal resource to the coking coal quality.At present, China's coking coal grade estimation and application method have two kinds: the one, and traditional technical analysis index method; The 2nd, the coal petrology method.All there is certain defective in these two kinds of methods.
1, technical analysis index method:
The main foundation of technical analysis index method is exactly traditional technical analysis method, by analyzing pit ash, volatile matter, moisture, full sulphur and index-caking index G, the thickness of colloidal matter layer Y of measurement coking coal technological property, inferior turgidity difficult to understand etc. are carried out list kind ature of coal amount and are judged and adapted.On the one hand, because these parameters have additivity, only react the The apparent phenomenon of ature of coal, and can not react its essence, the coking coal coking behavior difference that these parameters are approaching or identical is very big.Particularly under condition of market economy because the anxiety mixed coal phenomenon that causes in coal source is very serious, and the coal quality that is judged to coking coal, rich coal, lean coal with traditional coal classification indicators falls short of the reality, the coke quality that obtains of coal blending is difficult to guarantee thus.On the other hand, traditional industrial index coal blending technology is that each enterprise is according to the experience of own enterprise and the custom of long-term production accumulation, to various single adapteds that coal carries out different ratios of planting, shortage science, reasonableness and accuracy.
2, coal petrology method:
The fundamental point of coal petrology method is, the character of coal is decided by the biochemical action in coal-forming early stage and the physics chemical action in later stage.For identical coal-forming hyle, the theory of coal petrology evaluation coking ature of coal and coal blending rationally is based on two aspects: the one, and the metamorphic grade of coal is the vitrinite reflectance of coal; The 2nd, the lazy ratio of the work of coal.People mainly use the average maximum reflectivity of vitrinite of coal at present
Characterize the metamorphic grade of coking coal, the size of the standard variance in distributing with vitrinite reflectance characterizes the mixed coal situation of coal, characterizes the coking behavior of coking coal indirectly with the lazy ratio of living.Though, but still have certain problem than traditional technical analysis method science more:
Identical or close ature of coal amount difference is very big, this index of major cause can add and.Size with standard variance can't definitely characterize the mixed coal situation, promptly has several coals to blend together and can't characterize out, and how adapted more can't solve the coal that mixes out like this.The lazy ratio of living can characterize the processing performance of coal in theory, but active ingredient and inert component exist very big difference and actually operating difficulty on quantizing at present, and a lot of of research are discussed at present, in the application of reality seldom.And the oxidation of coal and coal-forming environment cause the variation of ature of coal can't reflect by the lazy ratio of living, and also can't reflect by vitrinite reflectance.In adapted, adopt the average maximum reflectivity of vitrinite mostly
This index be it is generally acknowledged
Blending ratio is more reasonable near 1.15.But because
Additivity, near the vitrinite reflectance distribution difference of the coal blending 1.15 is very big, corresponding coke quality also difference is very big.
Plant ature of coal evaluation and application method owing to above-mentioned two kinds of coking are single and all can not accurately evaluate ature of coal and reasonable adapted, thereby cause the blindness and the irrationality of coke making and coal blending work.
Summary of the invention
Technical problem to be solved by this invention is: a kind of coke making and coal blending method is provided, this method has overcome prior art can not carry out quantitative coal blending to the regulation coke quality, the coking list is planted the shortcoming that the coal ature of coal can not accurately be evaluated and use, coking coal resource is rationally used, accurately coal blending improves coke quality.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
A kind of coke making and coal blending method, it comprises the step that each single kind coking coal is mixed; Single coking coal of planting comprises: gas-fat coal, rich coal, 1/3 coking coal, coking coal, lean coal;
Each single vitrinite reflectance distribution characteristics interval and characteristic interval concentration degree of planting coking coal is respectively:
Gas-fat coal: R
MaxCharacteristic interval be 0.55-0.75%, this interval concentration degree reach 50-80%,
Rich coal; R
MaxCharacteristic interval be 0.85-1.10%, this interval concentration degree reach 50-70%,
1/3 coking coal: R
MaxCharacteristic interval be 0.70-0.95%, this interval concentration degree reaches more than 55%,
Coking coal: R
MaxCharacteristic interval be 1.05-1.40%, this interval concentration degree reaches more than 55%,
Lean coal: R
MaxCharacteristic interval be 1.40-1.75%, this interval concentration degree reaches 55-85%;
Each single weight percent proportioning of planting coal is: gas-fat coal: 5-10%; Rich coal: 5-20%; 1/3 coking coal: 30-45%; Coking coal: 30-45%; Lean coal: 10-18%.
In the such scheme, single coking coal of planting also comprises bottle coal; The vitrinite reflectance R of bottle coal
MaxCharacteristic interval be 0-0.65%, this interval concentration degree reaches 50-80%;
Each single weight percent proportioning of planting coal is: bottle coal: 3-10%; Gas-fat coal: 5-10%; Rich coal: 5-20%; 1/3 coking coal: 30-45%; Coking coal: 30-45%; Lean coal: 10-18%.
In the such scheme, each single weight percent proportioning of planting coal is: bottle coal: 3-5%; Gas-fat coal: 5-10%; Rich coal: 5-10%; 1/3 coking coal: 30-45%; Coking coal: 30-39%; Lean coal: 10-15%.
In the such scheme, single coking coal of planting also comprises meager lean coal; The vitrinite reflectance R of meager lean coal
MaxCharacteristic interval be 1.75-2.10%, the characteristic interval concentration degree is for reaching more than 55%;
Each single weight percent proportioning of planting coal is: bottle coal: 3-5%; Gas-fat coal: 5-10%; Rich coal: 5-10%; 1/3 coking coal: 30-45%; Coking coal: 30-39%; Lean coal: 10-15%; Meager lean coal: 0-8%.
The inventive method organically combines traditional coking single kind coal application method and coal petrology method, forms a kind of new suitable effective means: technology-coal petrography method.It is the caking index G of the single technological property of planting coal of reflection coking and thickness of colloidal matter layer Y (classification indicators that meet caking index G and thickness of colloidal matter layer Y in the corresponding national standards), with the component of the ratio that reflects the distributed area outside its origin cause of formation index-reflectivity characteristic distribution interval, characteristic interval concentration degree, the characteristic interval as the single kind of evaluation coking ature of coal, on this basis, carry out reasonable adapted at the regulation coke quality.So that single coking ature of coal of planting is correctly used, improve coke quality.
The inventive method is on the basis of caking index, thickness of colloidal matter layer and the vitrinite reflectance of the single kind of the coking coal that Chinese coal tar worker is accustomed to using, a kind of simple and practical effective blending method of proposition.The inventive method has overcome prior art can not carry out quantitative coal blending to the regulation coke quality, and the shortcoming to the single kind of coking coal ature of coal can not accurately be evaluated and use is rationally used coking coal resource, and accurately coal blending improves coke quality.
The inventive method can obtain the high-quality metallurgical coke on the cokery more than 4 meters under the condition that does not have moulded coal, selectivity pulverizing, coal damping and dry coke quenching technology, the coke strenth index can reach: shatter strength M
40Greater than 80%, abrasive wear resistance M
10Less than 7.0%, reactive (CRI) less than 30%, post-reaction strength (CSR) is greater than 62%.
Embodiment
Coke making and coal blending method of the present invention, it comprises the step that each single kind coking coal is mixed; Single coking coal of planting comprises: bottle coal, gas-fat coal, rich coal, 1/3 coking coal, coking coal, lean coal etc.; The caking index G of each single coal and thickness of colloidal matter layer Y all meet the classification indicators in the corresponding national standards.
Each single vitrinite reflectance distribution characteristics interval and characteristic interval concentration degree of planting coking coal is respectively:
Gas-fat coal: R
MaxCharacteristic interval be 0.55-0.75%, this interval concentration degree reach 50-80%,
Rich coal: R
MaxCharacteristic interval be 0.85-1.10%, this interval concentration degree reach 50-70%,
1/3 coking coal: R
MaxCharacteristic interval be 0.70-0.95%, this interval concentration degree reaches more than 55%,
Coking coal: R
MaxCharacteristic interval be 1.05-1.40%, this interval concentration degree reaches more than 55%,
Lean coal: R
MaxCharacteristic interval be 1.40-1.75%, this interval concentration degree reaches 55-85%;
Each single weight percent proportioning of planting coal is: gas-fat coal: 5-10%; Rich coal: 5-20%; 1/3 coking coal: 30-45%; Coking coal: 30-45%; Lean coal: 10-18%.
Coke making and coal blending method embodiment 1 of the present invention, the used coking coal of this method is state's producing coal, and the feed coal property analysis is as follows: single coal sample ash content % volatile matter % sulphur % G Y that plants
Characteristic interval concentration degree %
Gas-fat coal 8.19 42.34 1.70 97 27 0.65 62
1/3 coking coal 9.23 33.93 0.65 77 14.5 0.85 58
Rich coal 9.82 33.91 0.97 87 26 0.94 56
Coking coal 10.29 24.68 0.45 77 15 1.21 65
Lean coal 10.89 16.48 0.40 41 6 1.58 72
Each single weight percent proportioning of planting coal is: gas-fat coal: 8%; Rich coal: 5%; 1/3 coking coal: 35%; Coking coal: 38%; Lean coal: 14%.
4.63 rice coke oven gained coke quality: shatter strength M40:80.1%; Abrasive wear resistance M10:6.92%; Reactive (CRI): 28.9%, post-reaction strength (CSR): 63.1%.
Coke making and coal blending method embodiment 2 of the present invention, its single coking coal of planting also comprises bottle coal; The vitrinite reflectance R of bottle coal
MaxCharacteristic interval be 0-0.65%, this interval concentration degree reaches 50-80%;
Each single weight percent proportioning of planting coal is: bottle coal: 3-10%; Gas-fat coal: 5-10%; Rich coal: 5-20%; 1/3 coking coal: 30-45%; Coking coal: 30-45%; Lean coal: 10-18%.
The used coking coal of this method is state's producing coal.The feed coal property analysis is as follows:
Single coal sample ash content % volatile matter % sulphur % G Y that plants
Characteristic interval concentration degree %
Bottle coal 7.90 34.87 0.53 55 12 0.61 55
Gas-fat coal 8.24 43.12 1.68 95 26 0.63 68
1/3 coking coal 9.52 34.26 0.61 74 13.5 0.89 65
Rich coal 9.54 32.86 0.98 89 27 0.98 58
Coking coal 10.12 23.88 0.47 79 16.5 1.18 70
Lean coal 9.98 16.64 0.43 38 6 1.62 80
Each single weight percent proportioning of planting coal is: bottle coal: 3%; Gas-fat coal: 5%; 1/3 coking coal: 39%; Rich coal: 5%; Coking coal: 33%; Lean coal: 15%.
4.63 rice coke oven gained coke quality: shatter strength M
40: 80.53%, abrasive wear resistance M
10: 6.80%, reactive (CRI): 28.2%, post-reaction strength (CSR): 63.2%.
Coke making and coal blending method embodiment 3 of the present invention, its single coking coal of planting also comprises meager lean coal; The vitrinite reflectance R of meager lean coal
MaxCharacteristic interval be 1.75-2.10%, the characteristic interval concentration degree is for reaching more than 55%;
Each single weight percent proportioning of planting coal is: bottle coal: 3-5%; Gas-fat coal: 5-10%; Rich coal: 5-10%; 1/3 coking coal: 30-45%; Coking coal: 30-39%; Lean coal: 10-15%; Meager lean coal: 0-8%.
The used coking coal of this method is state's producing coal.The feed coal property analysis is as follows:
Single coal sample ash content % volatile matter % sulphur % G Y that plants
Characteristic interval concentration degree %
Bottle coal 7.90 34.87 0.53 55 12 0.61 55
Gas-fat coal 8.24 43.12 1.68 95 26 0.63 68
1/3 coking coal 9.52 34.26 0.61 74 13.5 0.89 65
Rich coal 9.54 32.86 0.98 89 27 0.98 58
Coking coal 10.12 23.88 0.47 79 16.5 1.18 70
Lean coal 9.98 16.64 0.43 38 6 1.62 80
Meager lean coal: 9.65 14.21 0.52 16 2 1.82 58
Each single weight percent proportioning of planting coal is: bottle coal: 3%; Gas-fat coal: 5%; 1/3 coking coal: 40%; Rich coal: 5%; Coking coal: 33%; Lean coal: 8%; Meager lean coal: 6%.
4.63 rice coke oven gained coke quality: shatter strength M
40: 80.53%, abrasive wear resistance M
10: 6.80%, reactive (CRI): 28.2%, post-reaction strength (CSR): 63.2%.
Each single optimum weight per distribution ratio of planting coal is: bottle coal: 3-5%; Gas-fat coal: 5-10%; Rich coal: 5-10%; 1/3 coking coal: 30-45%; Coking coal: 30-39%; Lean coal: 10-15%, meager lean coal: 0-8%.
Above analytical data is all analyzed according to the national standard of coal analysis.
Claims (4)
1, a kind of coke making and coal blending method, it comprises the step that each single kind coking coal is mixed; Single coking coal of planting comprises: gas-fat coal, rich coal, 1/3 coking coal, coking coal, lean coal; It is characterized in that:
Each single vitrinite reflectance distribution characteristics interval and characteristic interval concentration degree of planting coking coal is respectively:
Gas-fat coal: R
MaxCharacteristic interval be 0.55-0.75%, this interval concentration degree reach 50-80%,
Rich coal: R
MaxCharacteristic interval be 0.85-1.10%, this interval concentration degree reach 50-70%,
1/3 coking coal: R
MaxCharacteristic interval be 0.70-0.95%, this interval concentration degree reaches more than 55%,
Coking coal: R
MaxCharacteristic interval be 1.05-1.40%, this interval concentration degree reaches more than 55%,
Lean coal: R
MaxCharacteristic interval be 1.40-1.75%, this interval concentration degree reaches 55-85%;
Each single weight percent proportioning of planting coal is: gas-fat coal: 5-10%; Rich coal: 5-20%; 1/3 coking coal: 30-45%; Coking coal: 30-45%; Lean coal: 10-18%.
2, the method for claim 1 is characterized in that: single coking coal of planting also comprises bottle coal; The vitrinite reflectance R of bottle coal
MaxCharacteristic interval be 0-0.65%, this interval concentration degree reaches 50-80%;
Each single weight percent proportioning of planting coal is: bottle coal: 3-10%; Gas-fat coal: 5-10%; Rich coal: 5-20%; 1/3 coking coal: 30-45%; Coking coal: 30-45%; Lean coal: 10-18%.
3, method as claimed in claim 2 is characterized in that: each single weight percent proportioning of planting coal is: bottle coal: 3-5%; Gas-fat coal: 5-10%; Rich coal: 5-10%; 1/3 coking coal: 30-45%; Coking coal: 30-39%; Lean coal: 10-15%.
4, method as claimed in claim 3 is characterized in that: single coking coal of planting also comprises meager lean coal; The vitrinite reflectance R of meager lean coal
MaxCharacteristic interval be 1.75-2.10%, the characteristic interval concentration degree is for reaching more than 55%;
Each single weight percent proportioning of planting coal is: bottle coal: 3-5%; Gas-fat coal: 5-10%; Rich coal: 5-10%; 1/3 coking coal: 30-45%; Coking coal: 30-39%; Lean coal: 10-15%; Meager lean coal: 0-8%.
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| CN200710052603A CN101081989B (en) | 2007-06-29 | 2007-06-29 | Coal coking blending method |
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| CN101081989B CN101081989B (en) | 2010-05-19 |
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