Coal blending and coking method based on non-caking coal regulation and control activity large-proportion anthracite

Abstract

The invention discloses a coal blending and coking method based on non-caking coal regulation and control activity large-proportion anthracite, which comprises the following steps: crushing coking coal and non-coking coal into powder, modifying the non-caking coal and the anthracite by using a non-coking coal modifier, mixing the modified non-caking coal and anthracite with the coking coal to form blended coal, and coking to obtain coke. By adopting the coal blending and coking method disclosed by the invention, the caking property and the coking property of the non-caking coal and the anthracite are improved, so that the non-caking coal and the anthracite are suitable for coking coal blending, the proportion of high-quality coking coal in the blended coal is reduced, the mass percent of the non-coking coal in the coking blended coal is increased, and the coking cost is reduced by adding the non-coking coal into the blended coal for coking. And the quality of the prepared coke is not greatly reduced, so that a large amount of coking coal resources are saved, the coking cost is greatly reduced, and the quality of the coke is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal blending coking production, and particularly relates to a method for coking based on non-caking coal and controlled active large-proportion anthracite. BACKGROUND

[0002] Coal blending coking is a process of obtaining coke with certain quality requirements by carbonization after different types of raw coal are blended in appropriate proportions. There are many types and mine points of coking coal, and the application of coal blending technology can not only ensure the stable quality of coke, but also rationally utilize coal resources and save high-quality coking coal. The proven reserves of coking coal in China are about 2758.60 million tons, which is less than one-third of the total coal reserves in China. In terms of the distribution of each type of coking coal, the most abundant reserves of coking coal in China are gas coal and 1 / 3 coking coal, accounting for 45.73% of the proven reserves of coking coal. The second is coking coal and lean coal, and the reserves of fat coal are the least, accounting for only 12.81%. As can be seen from the above data, among these types of coking coal, the reserves of medium and high volatile strong caking coal such as coking coal, fat coal and 1 / 3 coking coal, which are the basis of coking, are not abundant. Moreover, about half of the fat coal, coking coal and lean coal are high-sulfur coal. Overall, high-quality coking coal resources are relatively scarce. In addition, due to the limitations of mining conditions and transportation capacity, the domestic production is not enough to meet the demand of China's coke consumption. Therefore, in recent years, more than 45 million tons of high-priced coking coal has to be imported every year to meet the demand of the rapid development of China's steel industry. Therefore, developing and expanding coking coal resources and increasing the use of non-caking coal and anthracite in coking coal blending have become an important research topic for coking researchers.

[0003] Among China's coal resources, long flame coal, non-caking coal and weak caking coal with low metamorphic degree, and anthracite with high metamorphic degree cannot generate lump coke when coked alone due to reasons such as not softening, not melting, poor caking property or thin thickness of the gel layer. Therefore, they are generally not used as coking coal. These coal types are collectively referred to as non-coking coal. Due to the low caking property and poor coking property of non-coking coal, the proportion of non-coking coal in current coking coal blending is low. Therefore, it is necessary to appropriately modify some non-coking coal with low caking property and poor coking property to make its caking property and coking property meet the requirements of coking coal blending, so as to increase the proportion of weak non-caking coal and anthracite in coking coal blending, provide guidance for more rational and efficient use of non-caking coal and anthracite resources in the coking process, and further save high-quality coking coal resources, reduce coke production cost and improve the market competitiveness of coking enterprises.

[0004] A Chinese patent with publication number CN 104293367 A discloses a method for non-coking coal modification and blending coking. First, take Pinglang coal, mixed main coking coal, mixed 1 / 3 coking coal and Panjiang coal as raw material coking coal in the total mass ratio of 5-10%, 29-55%, 5-40% and 15-20% respectively; take anthracite, lean coal as raw material non-coking coal in the total mass ratio of 4-6%, 5-7% respectively. Crush and mix the raw material coking coal and the raw material non-coking coal; then take modifier in the total mass ratio of 0.08-0.12%, mix it with the raw material non-coking coal, modify the raw material non-coking coal, mix the modified raw material non-coking coal with the raw material coking coal to obtain blending coal; put the blending coal into a coking furnace for dry distillation to obtain coke. Although the prepared blending coal and coke have indicators compared with the current production indicators, the volatile content of the blending coal decreases by-0.01-2.51%, the M40 strength index of the coke improves by 1.40-3.00%, the M10 improves by 0.50-1.90%, the CRI improves by-0.10-2.50%, and the CSR improves by-0.71-3.23%, but the mass ratio of non-coking coal composition in coking blending is not improved. A Chinese patent with publication number CN 103146408 A discloses a composite coal powder modifier, modified coal prepared by using the composite coal powder modifier, and a preparation method of the modified coal. The components and mass percentages of the coal powder modifier are as follows: benzoic acid 0.1-10%, borax 0.1-25%, boric oxide 0.1-30%, boric acid 30-50%, calcium dodecylbenzenesulfonate 0.1-10%, N-acyl glutamate 0.1-15%, powder polyethylene 0.1-10%, random polypropylene 0.1-20%, sodium-based bentonite or / and calcium-based bentonite 0.1-5%, iron concentrate powder 0.1-15%. The components and mass percentages of the modified coal are as follows: composite coal powder modifier 0.01-3%, non-coking coal 97-99.99%. The preparation method of the modified coal is as follows: grind the composite coal powder modifier into powder, crush the non-coking coal, mix the non-coking coal and the composite coal powder modifier in a reactor, and control the temperature in the reactor at 25-300℃ and the reaction time at more than 30 minutes. Although the modified non-coking coal improves the mass ratio of non-coking coal in coking blending coal, saves coking coal resources, and greatly reduces coking cost, the quality of the prepared coke needs to be further improved. Therefore, it is a technical problem to be solved by coking researchers to develop a coking blending method that can improve the mass ratio of non-coking coal in coking blending and ensure that the quality of the prepared coke does not decrease significantly. SUMMARY

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a coking method based on the regulation of non-caking coal and a high proportion of active anthracite in the blend. This coking method improves the caking and coking properties of both non-caking coal and anthracite, making them suitable for coking blending. This reduces the proportion of high-quality coking coal in the blend and increases the mass percentage of non-coking coal in the coking blend. Furthermore, the addition of non-coking coal to the blend does not lead to a significant decrease in the quality of the resulting coke. This not only saves a large amount of coking coal resources and significantly reduces coking costs, but also ensures coke quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A coking method based on non-caking coal with a high proportion of active anthracite, comprising the following steps: (1) Preparation of raw materials: Weigh each type of raw coal as coking coal according to the following weight proportions: 15-18 parts of gas coal, 30-40 parts of coking coal A, 6-10 parts of coking coal B, 3-5 parts of coking coal C, 6-8 parts of high-sulfur fat coal, 10-12 parts of medium-low sulfur fat coal, and 8-12 parts of lean coal; Weigh each type of raw coal as non-coking coal according to the following weight proportions: 4-6 parts of non-caking coal and 8-10 parts of anthracite; Crush and mix the raw coking coal and raw non-coking coal separately to obtain coking coal powder and non-coking coal powder for later use. (2) Coal blending: The non-coking coal modifier is crushed into powder, and then it is mixed with the non-coking coal powder obtained in step (1) in the reactor and reacted to modify it, so as to obtain modified non-coking coal powder. The modified non-coking coal powder is mixed with the coking coal powder obtained in step (1) to obtain blended coal powder. (3) Coking: The pulverized coal obtained in step (2) is tamped into coking coal briquettes. The coking coal briquettes are then loaded into a coke oven for coking to obtain mature coke. Finally, the mature coke is loaded into a dry quenching furnace for quenching to obtain finished coke.

[0007] Preferably, in step (1), the mass percentage of coking coal powder and non-coking coal powder with a particle size <3mm is 88-90%, of which 1-3mm accounts for 24-30%, 0.5-1mm accounts for 4-20%, and <0.5mm accounts for 44-56%.

[0008] Preferably, in step (2), the total sulfur content S of the blended coal is... t,d ≤0.69%, ash yield A ad <9%, volatile matter V daf ≤25%, adhesion G value ≥70, gel layer thickness Y value 15-25mm, vitrinite content ≥65%, of which the percentage of vitrinite [0.9-1.6] Re[0.9-1.6]>50%.

[0009] Preferably, in step (2), the amount of non-coking coal modifier is 0.1-0.15 wt% of the total amount of pulverized coal.

[0010] Preferably, the particle size of the non-coking coal modifier powder after crushing in step (2) is 0.1-0.2 mm.

[0011] Preferably, the temperature of the modification reaction in step (2) is 20-30℃ and the modification time is 45-90min.

[0012] Preferably, the non-coking coal modifier in step (2) is composed of the following components in parts by weight: 18-25 parts boric acid, 9-15 parts boron oxide, 5-12 parts borax, 8-10 parts liquid paraffin, 10-12 parts sodium dodecylbenzenesulfonate, 5-8 parts calcium-based bentonite, 8-10 parts polyacrylamide, 4-6 parts polyethylene powder, and 3-7 parts iron ore powder.

[0013] Preferably, the coking temperature in step (3) is 1250-1330℃ and the coking time is 28-32h.

[0014] Preferably, the finished coke obtained in step (3) has a post-reaction coke strength (CSR) > 69% and a crush resistance (M). 40 >88%, Reactivity Index (CRI) <23%, Wear Resistance M 10 <5.5%.

[0015] Compared with the prior art, the positive and beneficial effects of this invention are as follows: This invention utilizes a non-coking coal modifier to modify non-coking coal (non-caking coal and anthracite). The main mechanism involves active substances in the modifier combining with carbon bonds, ether bonds, and oxygen bridges in aromatic lamellae to form smaller aromatic lamellae. These smaller aromatic lamellae appropriately trim and reconstruct coal molecules, altering their high degree of orderliness, reducing the number of rings in large-molecule condensed polycyclic aromatic hydrocarbon structures, adjusting the distance between aromatic lamellae, and reducing the degree of graphitization. Simultaneously, the non-coking coal modifier can pyrolyze under a temperature field to generate a large amount of free hydrogen, thus acting as a hydrogen donor. The provided hydrogen atoms combine with active free radical fragments to form a relatively low molecular weight liquid substance, which is beneficial for forming a sufficient amount of colloidal body. Furthermore, the liquid paraffin and dodecane in the non-coking coal modifier... Sodium dodecylbenzenesulfonate, in combination with other components, modifies non-caking coal, significantly improving its low caking and fluidity. Simultaneously, liquid paraffin, sodium dodecylbenzenesulfonate, and calcium-based bentonite enhance the surface tension of the colloidal liquid phase formed during coal coking pyrolysis and improve its wettability and adhesion to inert components in the coal. This increases the caking and coking properties of non-coking coal, non-caking coal, and anthracite, making them suitable for coking blending. This reduces the proportion of high-quality coking coal in the blend, significantly increasing the mass percentage of non-coking coal in the coking blend. Furthermore, the addition of non-coking coal to the blend does not lead to a substantial decrease in the quality of the resulting coke. This not only saves a significant amount of coking coal resources and greatly reduces coking costs but also ensures coke quality. Detailed Implementation

[0016] The technical solution of the present invention will be further described in detail below through embodiments. These embodiments are for illustrative purposes only and are not intended to limit the present invention. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] Unless otherwise specified, the experimental methods described in the examples and comparative examples are conventional methods; unless otherwise specified, the reagents and materials described are commercially available.

[0018] Example 1 A coking method based on non-caking coal with a high proportion of active anthracite, comprising the following steps: (1) Preparation of raw materials: Weigh each type of raw coal as coking coal according to the following weight proportions: 15 parts of gas coal, 30 parts of coking coal A, 10 parts of coking coal B, 5 parts of coking coal C, 6 parts of high-sulfur fat coal, 12 parts of medium-low sulfur fat coal, and 8 parts of lean coal; Weigh each type of raw coal as non-coking coal according to the following weight proportions: 4 parts of non-caking coal and 8 parts of anthracite; Crush and mix the raw coking coal and raw non-coking coal separately to obtain coking coal powder and non-coking coal powder for later use; Among them, the mass proportion of the coking coal powder and non-coking coal powder with a particle size <3mm after crushing is 88%, of which 1-3mm accounts for 24%, 0.5-1mm accounts for 20%, and <0.5mm accounts for 44%; (2) Coal blending: The non-coking coal modifier is crushed into powder with a particle size of 0.1 mm, and then mixed with the non-coking coal powder obtained in step (1) in the reactor for reaction modification. The reaction modification temperature is 20℃ and the modification time is 90 min to obtain the modified non-coking coal powder. The modified non-coking coal powder is mixed with the coking coal powder obtained in step (1) to obtain the blended coal powder. The amount of non-coking coal modifier accounts for 0.1 wt% of the total amount of blended coal powder. The non-coking coal modifier is composed of the following components in parts by weight: 18 parts boric acid, 15 parts boron oxide, 5 parts borax, 8 parts liquid paraffin, 10 parts sodium dodecylbenzenesulfonate, 5 parts calcium-based bentonite, 10 parts polyacrylamide, 6 parts polyethylene powder and 3 parts iron ore powder. (3) Coking: The pulverized coal obtained in step (2) is tamped into coking coal briquettes. The coking coal briquettes are then loaded into a coke oven for coking. The coking temperature is 1250℃ and the coking time is 32h to obtain mature coke. Finally, the mature coke is loaded into a dry quenching furnace for quenching to obtain finished coke.

[0019] Example 2 A coking method based on non-caking coal with a high proportion of active anthracite, comprising the following steps: (1) Preparation of raw materials: Weigh each type of raw coal as coking coal according to the following weight proportions: 17 parts gas coal, 35 parts coking coal A, 8 parts coking coal B, 4 parts coking coal C, 7 parts high-sulfur fat coal, 11 parts medium-low sulfur fat coal, and 10 parts lean coal; Weigh each type of raw coal as non-coking coal according to the following weight proportions: 5 parts non-caking coal and 9 parts anthracite; Crush and mix the raw coking coal and raw non-coking coal separately to obtain coking coal powder and non-coking coal powder for later use; Among them, the mass proportion of the coking coal powder and non-coking coal powder with a particle size <3mm after crushing is 89%, of which 1-3mm accounts for 27%, 0.5-1mm accounts for 14%, and <0.5mm accounts for 48%; (2) Coal blending: The non-coking coal modifier is crushed into powder with a particle size of 0.15 mm, and then mixed with the non-coking coal powder obtained in step (1) in the reactor for reaction modification. The reaction modification temperature is 25℃ and the modification time is 60 min to obtain the modified non-coking coal powder. The modified non-coking coal powder is mixed with the coking coal powder obtained in step (1) to obtain the blended coal powder. The amount of non-coking coal modifier accounts for 0.12 wt% of the total amount of blended coal powder. The non-coking coal modifier is composed of the following components in parts by weight: 22 parts boric acid, 12 parts boron oxide, 9 parts borax, 9 parts liquid paraffin, 11 parts sodium dodecylbenzenesulfonate, 6 parts calcium-based bentonite, 9 parts polyacrylamide, 5 parts polyethylene powder and 6 parts iron ore powder. (3) Coking: The pulverized coal obtained in step (2) is tamped into coking coal briquettes. The coking coal briquettes are then loaded into a coke oven for coking. The coking temperature is 1300℃ and the coking time is 30h to obtain mature coke. Finally, the mature coke is loaded into a dry quenching furnace for quenching to obtain finished coke.

[0020] Example 3 A coking method based on non-caking coal with a high proportion of active anthracite, comprising the following steps: (1) Preparation of raw materials: Weigh each type of raw coal as coking coal according to the following weight proportions: 18 parts of gas coal, 40 parts of coking coal A, 6 parts of coking coal B, 3 parts of coking coal C, 8 parts of high-sulfur fat coal, 10 parts of medium-low sulfur fat coal, and 12 parts of lean coal; Weigh each type of raw coal as non-coking coal according to the following weight proportions: 6 parts of non-caking coal and 10 parts of anthracite; Crush and mix the raw coking coal and raw non-coking coal separately to obtain coking coal powder and non-coking coal powder for later use; Among them, the mass proportion of the coking coal powder and non-coking coal powder with a particle size <3mm after crushing is 90%, of which 1-3mm accounts for 30%, 0.5-1mm accounts for 4%, and <0.5mm accounts for 56%; (2) Coal blending: The non-coking coal modifier is crushed into powder with a particle size of 0.2 mm, and then it is mixed with the non-coking coal powder obtained in step (1) in the reactor for reaction modification. The reaction modification temperature is 30℃ and the modification time is 45 min to obtain the modified non-coking coal powder. The modified non-coking coal powder is mixed with the coking coal powder obtained in step (1) to obtain the blended coal powder. The amount of non-coking coal modifier accounts for 0.15 wt% of the total amount of blended coal powder. The non-coking coal modifier is composed of the following components in parts by weight: 25 parts boric acid, 9 parts boron oxide, 12 parts borax, 10 parts liquid paraffin, 12 parts sodium dodecylbenzenesulfonate, 8 parts calcium-based bentonite, 8 parts polyacrylamide, 4 parts polyethylene powder and 7 parts iron ore powder. (3) Coking: The pulverized coal obtained in step (2) is tamped into coking coal briquettes. The coking coal briquettes are then loaded into a coke oven for coking. The coking temperature is 1330℃ and the coking time is 28h to obtain mature coke. Finally, the mature coke is loaded into a dry quenching furnace for quenching to obtain finished coke.

[0021] Comparative Example 1 The only difference between this comparative example and Example 2 is that no non-coking coal modifier was added in step (2).

[0022] Comparative Example 2 The only difference between this comparative example and Example 2 is that the amount of non-coking coal modifier used in step (2) is 0.16 wt% of the total amount of pulverized coal.

[0023] Comparative Example 3 The only difference between this comparative example and Example 2 is that the liquid paraffin in the composition of the non-coking coal modifier in step (2) is replaced with an equal weight of sodium dodecylbenzenesulfonate.

[0024] Comparative Example 4 The only difference between this comparative example and Example 2 is that non-sticky coal was not added in step (1).

[0025] Comparative Example 5 Compared with Example 2, this comparative example serves as a blank example, without the addition of non-coking coal (non-caking coal and anthracite) and non-coking coal modifiers, while the rest of the coking method is the same as in Example 2.

[0026] The performance parameters of the blended coal obtained in step (2) of the coal blending and coking method in Examples 1-3 and Comparative Examples 1-5 are shown in Table 1.

[0027] The performance indicators of the coke prepared using the coal blending and coking methods in Examples 1-3 and Comparative Examples 1-5 are shown in Table 2.

[0028] Table 1 Performance parameters of blended coal in Examples 1-3 and Comparative Examples 1-5 Table 2. Performance indicators of coke prepared by the coal blending and coking methods in Examples 1-3 and Comparative Examples 1-5. As can be seen from the data in Table 2, compared with Comparative Example 1, the coke quality indicators obtained by blending non-caking coal and anthracite with coking coal without adding non-coking coal modifiers were much lower than those of the blank example and Examples 1-3. This may be because anthracite and non-caking coal themselves do not have caking properties during the coking process and do not produce plastic bodies. Their addition will consume a large amount of plastic bodies in the original blended coal, thus seriously affecting the quality of coke. Compared with the blank example (Comparative Example 5), the coke properties obtained in Examples 1-3 of this invention are significantly lower. The performance indicators are close to those of the blank example, which indicates that the present invention modifies non-coking coal (non-caking coal and anthracite) by using a non-coking coal modifier. The non-coking coal modifier can pyrolyze under a temperature field to generate a large amount of free hydrogen, thereby playing a role in hydrogen supply. The provided hydrogen atoms combine with active free radical fragments to form a relatively low molecular weight liquid substance, which is conducive to the formation of a sufficient amount of colloidal body, thus enabling non-caking coal and anthracite to have coking properties. When blended with coking coal for coking, coke with good quality indicators and close to those of the blank example can be obtained.

[0029] A comparison of Comparative Example 2 and Example 2 reveals that when the amount of non-coking coal modifier exceeds 0.15 wt% (0.16 wt%) of the total pulverized coal mixture, the addition of the non-coking coal modifier leads to a deterioration in the quality indicators of the coke. This may be due to the excessive addition of the non-coking coal modifier. Excessive non-coking coal modifier, besides reacting with non-caking coal and anthracite, leaves some residue. This residue reacts with other coking coals, increasing the amount of colloidal substances generated by the decomposition of the side chains of the coking coal molecules. However, some of these colloidal substances have poor thermal stability and begin to decompose and volatilize at lower temperatures, reducing the amount of colloidal substances and thus causing a deterioration in coke quality. Therefore, the applicant of this invention, through extensive experimentation, has determined that the most suitable amount of non-coking coal modifier is 0.1-0.15 wt% of the total pulverized coal mixture.

[0030] As can be seen from the comparison between Comparative Example 3 and Example 2, the liquid paraffin and sodium dodecylbenzene sulfonate in the non-coking coal modifier of the present invention work together to modify non-caking coal, significantly improving the shortcomings of low caking and low fluidity of non-caking coal. At the same time, the liquid paraffin, sodium dodecylbenzene sulfonate, calcium-based bentonite and other components can enhance the surface tension of the colloidal liquid phase formed by pyrolysis during coal coking and the wettability and adhesion of the colloidal liquid phase to inert components in coal, thereby improving the caking and coking properties of non-caking coal and anthracite, making them suitable for use in coking blends. This reduces the proportion of high-quality coking coal in the blend, and the mass percentage of non-caking coal and anthracite in the coking blend increases significantly. This not only saves a large amount of coking coal resources, but also significantly reduces coking costs.

[0031] A comparison of Comparative Example 4 and Example 2 shows that the coke quality index of Example 2, which mixes 5 parts by weight of non-caking coal and 9 parts by weight of anthracite, is better than that of Comparative Example 4, which only adds 9 parts by weight of anthracite. After adding the non-coke coal modifier, the coke quality index not only did not decrease but actually improved after adding an additional 5 parts by weight of non-caking coal. This indicates that there is a certain complementary effect between non-caking coal and anthracite. In coking coal blending, adding non-caking coal can reduce the caking properties of coking coal blending, thereby increasing the proportion of anthracite in coking coal blending.

[0032] Finally, it should be noted that although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A method for coking based on non-caking coal with a high proportion of active anthracite, characterized in that, Includes the following steps: (1) Preparation of raw materials: Weigh each type of raw coal as coking coal according to the following weight proportions: 15-18 parts of gas coal, 30-40 parts of coking coal A, 6-10 parts of coking coal B, 3-5 parts of coking coal C, 6-8 parts of high-sulfur fat coal, 10-12 parts of medium-low sulfur fat coal, and 8-12 parts of lean coal; Weigh each type of raw coal as non-coking coal according to the following weight proportions: 4-6 parts of non-caking coal and 8-10 parts of anthracite; Crush and mix the raw coking coal and raw non-coking coal separately to obtain coking coal powder and non-coking coal powder for later use. (2) Coal blending: The non-coking coal modifier is crushed into powder, and then it is mixed with the non-coking coal powder obtained in step (1) in the reactor and reacted to modify it, so as to obtain modified non-coking coal powder. The modified non-coking coal powder is mixed with the coking coal powder obtained in step (1) to obtain blended coal powder. (3) Coking: The pulverized coal obtained in step (2) is tamped into coking coal briquettes. The coking coal briquettes are then loaded into a coke oven for coking to obtain mature coke. Finally, the mature coke is loaded into a quenching tower for quenching to obtain finished coke.

2. The coking method based on non-caking coal to regulate the activity of a large proportion of anthracite in coal blending, as described in claim 1, is characterized in that... In step (1), the mass percentage of coking coal powder and non-coking coal powder with a particle size <3mm after crushing is 88-90%, of which 1-3mm accounts for 24-30%, 0.5-1mm accounts for 4-20%, and <0.5mm accounts for 44-56%.

3. The coking method based on non-caking coal to regulate the activity of a large proportion of anthracite in coal blending, as described in claim 1, is characterized in that... In step (2), the total sulfur content S of the blended coal is... t,d ≤0.69% (actual sulfur content 0.85%), ash yield A ad <9% (actual ash content 10%), volatile matter V da f≤25%, adhesion G value≥70 (actual G value 55), gel layer thickness Y value 15-25mm (actual Y value 12-14), vitrinite content≥65%, of which the percentage of vitrinite [0.9-1.6] Re[0.9-1.6]>50%.

4. The coking method based on non-caking coal to regulate the activity of a large proportion of anthracite in coal blending according to claim 1, characterized in that, In step (2), the amount of non-coking coal modifier used accounts for 0.1-0.15 wt% of the total amount of pulverized coal.

5. The coking method based on non-caking coal to regulate the activity of a large proportion of anthracite in coal blending according to claim 1, characterized in that, The particle size of the non-coking coal modifier powder after crushing in step (2) is 0.1-0.2 mm.

6. The coking method based on non-caking coal to regulate the activity of a large proportion of anthracite in coal blending according to claim 1, characterized in that, The temperature of the modification reaction in step (2) is 20-30℃, and the modification time is 45-90min.

7. The coking method based on non-caking coal to regulate the activity of a large proportion of anthracite in coal blending according to claim 1, characterized in that, The non-coking coal modifier in step (2) consists of the following components in parts by weight: 18-25 parts boric acid, 9-15 parts boron oxide, 5-12 parts borax, 8-10 parts liquid paraffin, 10-12 parts sodium dodecylbenzenesulfonate, 5-8 parts calcium-based bentonite, 8-10 parts polyacrylamide, 4-6 parts polyethylene powder, and 3-7 parts iron ore powder.

8. The coking method based on non-caking coal to regulate the activity of a large proportion of anthracite in coal blending according to claim 1, characterized in that, In step (3), the coking temperature is 1250-1330℃ and the coking time is 28-32h.

9. A method for coking based on non-caking coal and high proportion of active anthracite as described in claim 1, characterized in that, The finished coke obtained in step (3) has a post-reaction coke strength CSR > 69% (reaching 67%) and a crush resistance M. 40 >88%, Reactivity Index (CRI) <23%, Wear Resistance M 10 <5.5%.

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