Batching system and coal gangue treatment system

Abstract

The utility model discloses a batching system and a coal gangue treatment system. A discharging port of a first raw material bin of the batching system corresponds to the feeding end of a first constant feeder, a discharging port of a second raw material bin corresponds to the feeding end of a second constant feeder, and a discharging port of a third raw material bin corresponds to the feeding end of a third constant feeder. The discharging end of the third constant feeder corresponds to a feeding port of the ball press machine, the discharging end of the first constant feeder, the discharging end of the second constant feeder and the discharging port of the ball press machine correspond to the feeding end of the distributing device, and the discharging end of the distributing device corresponds to the feeding end of the roasting system. According to the coal gangue roasting system, coal gangues with different specifications are arranged in the roasting system according to requirements while the coal gangues are conveyed to the roasting system through the batching system, so that better roasting is realized.

Description

Technical Field

[0001] The present application belongs to the technical field of coal gangue roasting, and specifically relates to a batching system and a coal gangue processing system. Background Art

[0002] Gangue is solid waste generated during coal mining, and its output rate is about 15% to 20% of the original coal. The stockpile of gangue in my country has exceeded 5 billion tons, occupying a large amount of land, causing a huge waste of resources, and also bringing a relatively serious risk of environmental pollution. Gangue contains a large amount of silicon dioxide and aluminum oxide. By roasting the gangue, the activity of silicon dioxide and aluminum oxide in the gangue can be increased, which is more conducive to the extraction of aluminum and silicon resources in the gangue.

[0003] At present, a roasting system is usually used to roast coal gangue. In order to ensure the roasting effect of the roasting system on the coal gangue, it is necessary to arrange coal gangue of different specifications in the roasting system as required while transporting the coal gangue to the roasting system for better roasting. Utility Model Content

[0004] The present application aims to at least to some extent solve the technical problem of how to arrange the gangue of different specifications in the roasting system as required while transporting the gangue to the roasting system. To this end, the present application provides a batching system and a gangue processing system.

[0005] The technical solution of this application is:

[0006] In a first aspect, the present application provides a batching system suitable for conveying and arranging coal gangue to a roasting system, the batching system comprising:

[0007] A first raw material bin is used to store roasted coal gangue with a particle size within a set first threshold range;

[0008] The second raw material bin is used to store raw coal gangue with a particle size smaller than a set second threshold;

[0009] A third raw material bin is used to store raw coal gangue with a particle size smaller than a set third threshold, wherein the set third threshold is smaller than the set second threshold;

[0010] A first quantitative feeder, wherein the discharge port of the first raw material bin is arranged corresponding to the feed end of the first quantitative feeder;

[0011] A second quantitative feeder, wherein the discharge port of the second raw material bin is arranged corresponding to the feed end of the second quantitative feeder;

[0012] A third quantitative feeder, wherein the discharge port of the third raw material bin is arranged corresponding to the feed end of the third quantitative feeder;

[0013] A ball press machine, wherein the discharge end of the third quantitative feeder is arranged corresponding to the feed inlet of the ball press machine;

[0014] A distributor, the discharging end of the first quantitative feeder, the discharging end of the second quantitative feeder and the discharging port of the ball press are respectively arranged corresponding to the feeding end of the distributor, and the discharging end of the distributor is arranged corresponding to the feeding end of the roasting system.

[0015] In some embodiments, the second threshold is set to be 190 mm to 210 mm, the third threshold is set to be 7 mm to 9 mm, and the particle size of the green pellets is 20 mm to 30 mm.

[0016] In some embodiments, the batching system also includes a crusher, the discharge port of the second raw material bin is arranged correspondingly to the feed port of the crusher, the discharge port of the crusher is arranged correspondingly to the feed end of the second quantitative feeder, and the particle size of the raw coal gangue output from the discharge port of the crusher is smaller than a set fourth threshold value, and the set fourth threshold value is smaller than the set second threshold value.

[0017] In some embodiments, the fourth threshold is set to be 35 mm to 45 mm.

[0018] In some embodiments, the batching system further includes a roller screening machine, the discharge end of the distributor is arranged correspondingly to the feed end of the roller screening machine, and the discharge end of the roller screening machine is arranged correspondingly to the feed end of the roasting system.

[0019] In some embodiments, the mesh diameter of the roller screening machine corresponds to the set third threshold value, and the set third threshold value is smaller than the set first threshold value;

[0020] The batching system also includes:

[0021] a first belt conveyor, wherein the feeding end of the first belt conveyor is arranged at the bottom of the screening part of the roller screening machine;

[0022] A fourth raw material bin, used for storing adhesive, wherein a discharge port of the fourth raw material bin is arranged corresponding to a feed end of the first belt conveyor;

[0023] The mixer, the discharge end of the first belt conveyor is arranged correspondingly to the feed port of the mixer, and the discharge port of the mixer is arranged correspondingly to the feed port of the third raw material bin.

[0024] In some embodiments, the batching system further comprises:

[0025] A weight loss scale, wherein the discharge port of the fourth raw material bin is arranged correspondingly to the feed port of the weight loss scale, and the discharge port of the weight loss scale is arranged correspondingly to the feed end of the first belt conveyor;

[0026] An electronic belt scale is arranged on the first belt conveyor.

[0027] In a second aspect, the present application also provides a gangue processing system, including a roasting system and the above-mentioned batching system, wherein the batching system is used to transport and arrange the gangue to the roasting system, and the roasting system is used to roast the raw gangue into roasted gangue.

[0028] In some embodiments, the roasting system includes a belt roasting machine, the discharge end of the distributor is arranged corresponding to the feed end of the belt roasting machine, the belt roasting machine has a first drying section, a second drying section, an ignition section, a self-ignition section, a roasting section, a soaking section and a cooling section arranged in sequence, and the temperature of the second drying section is higher than the temperature of the first drying section;

[0029] The cooling section is connected to the first drying section, the ignition section, the self-ignition section, the roasting section and the soaking section, so that the temperature and oxygen content of the first drying section, the ignition section, the self-ignition section, the roasting section and the soaking section are adjusted by the gas output by the cooling section;

[0030] The roasting section and the soaking section are both connected to the second drying section, so that the temperature of the second drying section is adjusted by the gas output from the roasting section and the soaking section.

[0031] In some embodiments, the belt roaster comprises:

[0032] The main body comprises the first drying section, the second drying section, the ignition section, the self-ignition section, the roasting section, the soaking section and the cooling section which are arranged in sequence;

[0033] A baking belt is provided through the main body, and the discharge end of the distributor is provided corresponding to the feed end of the baking belt;

[0034] A trolley, arranged in the baking zone;

[0035] Among them, when the trolley is located at the feeding end of the roasting belt, the batching system lays the roasted coal gangue with a particle size within the set first threshold range, the raw coal gangue with a particle size smaller than the set second threshold, and the green pellets made of the raw coal gangue with a particle size smaller than the set third threshold in the trolley from bottom to top.

[0036] The embodiments of the present application have at least the following beneficial effects:

[0037] The present application provides a batching system for conveying coal gangue to a roasting system, and can arrange coal gangue of different specifications at the feed end of the roasting system as required. The roasted coal gangue is usually laid on the bottom layer to protect the equipment in the roasting system, the raw coal gangue with a larger particle size is laid on the middle layer, and the raw coal gangue with a smaller particle size is laid on the top layer after being made into green pellets to ensure the roasting effect of the coal gangue in the roasting system.

[0038] In the batching system, the first raw material bin is used to store roasted coal gangue, and in order to ensure the roasting effect, the particle size of the roasted coal gangue in the first raw material bin is controlled within the set first threshold range. The second raw material bin is used to store raw coal gangue with a relatively large particle size, and in order to ensure the roasting effect, the particle size of the raw coal gangue in the second raw material bin is controlled to be less than the set second threshold. The third raw material bin is used to store raw coal gangue with a relatively small particle size, and in order to facilitate the raw coal gangue to be made into green pellets and ensure the roasting effect, the particle size of the raw coal gangue in the third raw material bin is controlled to be less than the set third threshold.

[0039] When the batching system is running, the roasted coal gangue in the first raw material bin enters the first quantitative feeder, and then the first quantitative feeder transports a certain amount of roasted coal gangue to the distributor, and finally the distributor arranges the roasted coal gangue at the feeding end of the roasting system, so that the roasted coal gangue is laid on the bottom layer. The raw coal gangue with larger particle size in the second raw material bin enters the second quantitative feeder, and then the second quantitative feeder transports a certain amount of raw coal gangue to the distributor, and finally the distributor arranges the raw coal gangue at the feeding end of the roasting system, so that the raw coal gangue with larger particle size is laid in the middle layer. The raw coal gangue with smaller particle size in the third raw material bin enters the third quantitative feeder, and then the third quantitative feeder transports a certain amount of raw coal gangue to the briquette machine, and the briquette machine makes raw coal gangue with smaller particle size into green pellets, and then the briquette machine transports the green pellets to the distributor, and finally the distributor arranges the green pellets at the feeding end of the roasting system, so that the green pellets made of raw coal gangue with smaller particle size are laid on the top layer. In this way, the batching system can realize that while the coal gangue is transported to the roasting system, the coal gangue of different specifications can be arranged in the roasting system as required to better perform roasting. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1This is a schematic diagram of the structure of a coal gangue processing system according to an embodiment of the present application.

[0042] Reference numerals:

[0043] 10. Coal gangue processing system.

[0044] 100, roasting system; 101, belt roasting machine; 101a, first drying section; 101b, second drying section; 101c, ignition section; 101d, spontaneous combustion section; 101e, roasting section; 101f, soaking section; 101g, cooling section; 101h, first cooling section; 101i, second cooling section; 101j, third cooling section; 102, main body; 103, roasting belt; 104, smoke hood; 105, first pipeline; 106, second pipeline; 107, first fan; 108, third pipeline; 109, second Fan; 110, first valve; 111, fourth pipeline; 112, second valve; 113, fifth pipeline; 114, third fan; 115, flue gas desulfurization and denitrification device; 116, sixth pipeline; 117, dust collector; 118, waste heat recovery device; 119, seventh pipeline; 120, fourth fan; 121, eighth pipeline; 122, first connecting pipe; 123, second connecting pipe; 124, third connecting pipe; 125, fourth connecting pipe; 126, third valve; 127, fourth valve; 128, heat collecting wind box.

[0045] 200, batching system; 201, first raw material bin; 202, second raw material bin; 203, third raw material bin; 204, first quantitative feeder; 205, second quantitative feeder; 206, third quantitative feeder; 207, ball press; 208, distributor; 209, crusher; 210, roller screening machine; 211, first belt conveyor; 212, fourth raw material bin; 213, mixer; 214, weight loss scale; 215, electronic belt scale; 216, gate valve; 217, disc feeder; 218, second belt conveyor; 219, moisture meter; 220, third belt conveyor. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0047] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0048] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0049] See also Figure 1 In the first aspect of the present application, a batching system 200 is provided, which is suitable for conveying and arranging raw coal gangue to the roasting system 100. The batching system 200 includes a first raw material bin 201, a second raw material bin 202, a third raw material bin 203, a first quantitative feeder 204, a second quantitative feeder 205, a third quantitative feeder 206, a ball press 207 and a distributor 208.

[0050] The first raw material bin 201 is used to store roasted gangue with a particle size within a set first threshold range, the second raw material bin 202 is used to store raw gangue with a particle size smaller than a set second threshold, and the third raw material bin 203 is used to store raw gangue with a particle size smaller than a set third threshold. The third threshold is set to be smaller than the second threshold. The discharge port of the first raw material bin 201 is set corresponding to the feeding end of the first quantitative feeder 204, and the discharge port of the second raw material bin 202 is set corresponding to the feeding end of the second quantitative feeder 204. 05 is set correspondingly, the discharge port of the third raw material bin 203 is set correspondingly to the feed end of the third quantitative feeder 206, the discharge end of the third quantitative feeder 206 is set correspondingly to the feed port of the ball press 207, the discharge end of the first quantitative feeder 204, the discharge end of the second quantitative feeder 205 and the discharge port of the ball press 207 are respectively set correspondingly to the feed end of the distributor 208, and the discharge end of the distributor 208 is set correspondingly to the feed end of the roasting system 100.

[0051] Specifically, the roasting system 100 is used to roast the raw coal gangue into roasted coal gangue, and in order to ensure the roasting effect of the coal gangue in the roasting system 100, it is necessary to arrange the coal gangue of different specifications in the roasting system 100 as required for roasting while transporting the coal gangue to the roasting system 100. The batching system 200 proposed in the embodiment of the present application is used to transport coal gangue to the roasting system 100, and can arrange the coal gangue of different specifications at the feeding end of the roasting system 100 as required. Usually, the roasted coal gangue is laid on the bottom layer to protect the equipment in the roasting system 100, the raw coal gangue with a larger particle size is laid on the middle layer, and the raw coal gangue with a smaller particle size is laid on the top layer after being made into green pellets to ensure the roasting effect of the coal gangue in the roasting system 100.

[0052] In the batching system 200, the first raw material bin 201 is used to store roasted coal gangue, and in order to ensure the roasting effect, the particle size of the roasted coal gangue in the first raw material bin 201 is controlled within a set first threshold range. The second raw material bin 202 is used to store raw coal gangue with a relatively large particle size, and in order to ensure the roasting effect, the particle size of the raw coal gangue in the second raw material bin 202 is controlled to be less than a set second threshold. The third raw material bin 203 is used to store raw coal gangue with a relatively small particle size, and in order to facilitate the raw coal gangue to be made into green pellets and ensure the roasting effect, the particle size of the raw coal gangue in the third raw material bin 203 is controlled to be less than a set third threshold.

[0053] When the batching system 200 is in operation, the roasted coal gangue in the first raw material bin 201 enters the first quantitative feeder 204, and then the first quantitative feeder 204 transports a certain amount of the roasted coal gangue to the distributor 208, and finally the distributor 208 arranges the roasted coal gangue at the feeding end of the roasting system 100, so that the roasted coal gangue is laid on the bottom layer. The raw coal gangue with a relatively large particle size in the second raw material bin 202 enters the second quantitative feeder 205, and then the second quantitative feeder 205 transports a certain amount of the raw coal gangue to the distributor 208, and finally the distributor 208 arranges the raw coal gangue at the feeding end of the roasting system 100, so that the raw coal gangue with a relatively large particle size is laid on the middle layer. The raw coal gangue with smaller particle size in the third raw material bin 203 enters the third quantitative feeder 206, and then the third quantitative feeder 206 transports a certain amount of raw coal gangue to the briquette machine 207, and the briquette machine 207 makes raw coal gangue with smaller particle size into green pellets, and then the briquette machine 207 transports the green pellets to the distributor 208, and finally the distributor 208 arranges the green pellets at the feeding end of the roasting system 100, so that the green pellets made of raw coal gangue with smaller particle size are laid on the top layer. In this way, the batching system 200 can realize that while the coal gangue is transported to the roasting system 100, the coal gangue of different specifications can be arranged in the roasting system 100 as required, so as to better perform roasting.

[0054] In some embodiments, the second threshold is set to 190 mm to 210 mm, the third threshold is set to 7 mm to 9 mm, and the particle size of the green pellets is 20 mm to 30 mm. The particle size of the raw coal gangue in the second raw material bin 202 is less than 190 mm to 210 mm, the particle size of the raw coal gangue in the second raw material bin 202 is less than 7 mm to 9 mm, and the particle size of the raw coal gangue on the uppermost layer of the feed end of the roasting system 100 is 20 mm to 30 mm, thereby ensuring the roasting effect of the roasting system 100.

[0055] In some embodiments, Figure 1As shown, the batching system 200 also includes a crusher 209, the discharge port of the second raw material bin 202 is set correspondingly to the feed port of the crusher 209, the discharge port of the crusher 209 is set correspondingly to the feed end of the second quantitative feeder 205, and the particle size of the raw coal gangue output from the discharge port of the crusher 209 is less than the set fourth threshold, and the set fourth threshold is less than the set second threshold. In order to further improve the roasting effect of the roasting system 100, it is necessary to further reduce the particle size of the raw coal gangue, and control the particle size of the raw coal gangue to be less than the set fourth threshold, so that the crusher 209 is used to crush the raw coal gangue output from the second raw material bin 202.

[0056] In some embodiments, the fourth threshold is set to 35 mm to 45 mm. That is, the particle size of the raw coal gangue output from the discharge port of the crusher 209 is less than 35 mm to 45 mm. The particle size of the raw coal gangue after being crushed by the crusher 209 is less than 35 mm to 45 mm, so that the particle size of the raw coal gangue laid in the middle layer of the feed end of the roasting system 100 is less than 35 mm to 45 mm, thereby further improving the roasting effect of the roasting system 100.

[0057] In some embodiments, the batching system 200 further includes a roller screen 210, and the discharge end of the distributor 208 is arranged corresponding to the feed end of the roller screen 210, and the discharge end of the roller screen 210 is arranged corresponding to the feed end of the roasting system 100. The roller screen 210 is arranged between the discharge end of the distributor 208 and the feed end of the roasting system 100, and the roller screen 210 is used to screen out the coal gangue with a smaller particle size, thereby improving the roasting effect of the roasting system 200 on the coal gangue.

[0058] In some embodiments, the mesh diameter of the roller screening machine 210 corresponds to a set third threshold value, and the set third threshold value is less than the set first threshold value. Figure 1 As shown, the batching system 200 also includes a first belt conveyor 211, a fourth raw material bin 212 and a mixer 213. The feed end of the first belt conveyor 211 is arranged at the bottom of the screening part of the roller screening machine 210. The fourth raw material bin 212 is used to store adhesives. The discharge port of the fourth raw material bin 212 is arranged corresponding to the feed end of the first belt conveyor 211, the discharge end of the first belt conveyor 211 is arranged corresponding to the feed port of the mixer 213, and the discharge port of the mixer 213 is arranged corresponding to the feed port of the third raw material bin 203.

[0059] After the raw coal gangue in the second raw material bin 202 is crushed by the crusher 209, more raw coal gangue with a particle size smaller than the third threshold value will be formed. Raw coal gangue with a particle size too small is not conducive to roasting. It should be noted that in the second raw material bin 202, the particle size of the raw coal gangue is usually larger than the set third threshold value, and the content of raw coal gangue with a particle size smaller than the set third threshold value is relatively low.

[0060] The sieve hole diameter of the roller screening machine 210 corresponds to the set third threshold value, and the set third threshold value is smaller than the set first threshold value, so that the roller screening machine 210 is mainly used to screen the raw coal gangue output by the crusher 209. The raw coal gangue with a smaller particle size screened out by the screening part of the roller screening machine 210 enters the first belt conveyor 211, and the adhesive in the fourth raw material bin 212 enters the first belt conveyor 211. Then the first belt conveyor 211 conveys the raw coal gangue and the adhesive to the mixer 213. After being mixed by the mixer 213, the mixture of the raw coal gangue and the adhesive is conveyed to the third raw material bin 203, as the raw coal gangue with a particle size smaller than the set third threshold value stored in the third raw material bin 203.

[0061] In some embodiments, the mesh diameter of the roller screening machine 210 is 7 mm to 9 mm. The mesh diameter of the roller screening machine 210 corresponds to the set third threshold value, so that the raw material gangue with a particle size less than 7 mm to 9 mm is screened out by the roller screening machine 210. At the same time, the particle size of the raw material gangue laid in the middle layer of the feed end of the roasting system 100 is 7 mm to 45 mm, so as to ensure the roasting effect of the roasting system 100.

[0062] In some embodiments, the first threshold range is set to 15 mm to 30 mm. That is, the particle size of the roasted coal gangue laid at the bottom of the feed end of the roasting system 100 is 15 mm to 30 mm, so as to ensure the roasting effect of the roasting system 100. It should be noted that the roasted coal gangue with a particle size within the set first threshold range stored in the third raw material bin 203 is usually derived from the roasted coal gangue processed by the roasting system 100, and the roasted coal gangue with a particle size within the set first threshold range is screened out by a screening machine to serve as the raw material in the third raw material bin 203.

[0063] In some embodiments, Figure 1As shown, the batching system 200 also includes a weight loss scale 214 and an electronic belt scale 215. The discharge port of the fourth raw material bin 212 is arranged corresponding to the feed port of the weight loss scale 214, the discharge port of the weight loss scale 214 is arranged corresponding to the first belt conveyor 211, and the electronic belt scale 215 is arranged on the first belt conveyor 211. The weight loss scale 214 is used to control the amount of adhesive output from the fourth raw material bin 212, and the electronic belt scale 215 is used to determine the weight of the material conveyed on the first belt conveyor 211, so as to ensure the ratio of the raw material gangue and the adhesive through the weight loss scale 214 and the electronic belt scale 215.

[0064] In some embodiments, Figure 1 As shown, the batching system 200 further includes a gate valve 216 , which is disposed at the discharge port of the first raw material bin 201 , so as to control the opening and closing of the discharge port of the first raw material bin 201 through the gate valve 216 .

[0065] In some embodiments, Figure 1 As shown, the batching system 200 further includes a disc feeder 217, the feed port of the disc feeder 217 is arranged correspondingly to the discharge port of the third raw material bin 203, and the discharge port of the disc feeder 217 is arranged correspondingly to the feed end of the third quantitative feeder 206. The discharge amount of the third raw material bin 203 can be further accurately controlled by the disc feeder 217.

[0066] In some embodiments, the distributor 208 may be a wide distributor, a spiral distributor, a plate distributor, etc., which is not limited in this embodiment of the present application.

[0067] In some embodiments, Figure 1 As shown, the batching system 200 further includes a second belt conveyor 218, the feeding end of the second belt conveyor 218 is arranged corresponding to the discharge port of the ball press 207, and the output end of the second belt conveyor 218 is arranged corresponding to the feeding end of the distributor 208. The raw pellets output by the ball press 207 are conveyed to the distributor 208 through the second belt conveyor 218.

[0068] In some embodiments, Figure 1 As shown, the batching system 200 also includes a moisture meter 219 , which is disposed corresponding to the output end of the second belt conveyor 218 , so as to measure the moisture content of the raw pellets output by the pellet press 207 through the moisture meter 219 .

[0069] In some embodiments, Figure 1As shown, the batching system 200 also includes a third belt conveyor 220, and the feeding end of the third belt conveyor 220 is arranged corresponding to the discharging port of the mixer 213, and the discharging end of the third belt conveyor 220 is arranged corresponding to the feeding port of the third raw material bin 203, so as to transport the mixture of raw coal gangue and adhesive output by the mixer 213 to the third raw material bin 203 through the third belt conveyor 220.

[0070] See also Figure 1 In the second embodiment of the present application, a gangue processing system 10 is provided. The gangue processing system 10 includes a roasting system 100 and a batching system 200 in the first embodiment of the present application. The batching system 200 is used to transport and arrange gangue to the roasting system 100. The roasting system 100 is used to roast the raw gangue into roasted gangue. The discharging end of the batching system 200 is arranged corresponding to the feeding end of the roasting system 100. The batching system 200 lays roasted gangue with a particle size within a set first threshold range, raw gangue with a particle size less than a set second threshold, and green pellets made of raw gangue with a particle size less than a set third threshold from bottom to top on the feeding end of the roasting system 100 to ensure the roasting effect of the roasting system 100 on the gangue.

[0071] In some embodiments, Figure 1 As shown, the roasting system 100 includes a belt roasting machine 101, and the discharge end of the distributor 208 is arranged corresponding to the feeding end of the belt roasting machine 101. The feeding end of the belt roasting machine 101 is the feeding end of the roasting system 100, and the discharge end of the distributor 208 is the discharge end of the batching system 200.

[0072] The belt roasting machine 101 has a first drying section 101a, a second drying section 101b, an ignition section 101c, a self-ignition section 101d, a roasting section 101e, a soaking section 101f and a cooling section 101g which are arranged in sequence. The cooling section 101g is connected to the first drying section 101a, the ignition section 101c, the self-ignition section 101d, the roasting section 101e and the soaking section 101f, so that the temperature and oxygen content of the first drying section 101a, the ignition section 101c, the self-ignition section 101d, the roasting section 101e and the soaking section 101f are adjusted by the gas output by the cooling section 101g. The roasting section 101e and the soaking section 101f are connected to the second drying section 101b, so that the temperature of the second drying section 101b is adjusted by the gas output by the roasting section 101e and the soaking section 101f.

[0073] The main components of coal gangue include silicon dioxide, aluminum oxide, carbon, water, etc. After the coal gangue is roasted, the activity of silicon dioxide and aluminum oxide in the coal gangue can be improved, so that the silicon dioxide and aluminum oxide in the coal gangue can be used more efficiently. At the same time, in order to ensure the roasting effect of coal gangue, it is also necessary to remove the carbon and water in the coal gangue. The water in the coal gangue includes free water and crystal water. Compared with free water, crystal water requires a higher temperature to be removed. Based on this, the belt roasting machine 101 in the embodiment of the present application has a first drying section 101a, a second drying section 101b, an ignition section 101c, a self-ignition section 101d, a roasting section 101e, a soaking section 101f and a cooling section 101g arranged in sequence.

[0074] The belt roasting machine 101 is the main equipment for roasting coal gangue in the roasting system 100. When roasting coal gangue in the roasting system 100, the raw coal gangue is finally processed into roasted coal gangue under the sequential action of the first drying section 101a, the second drying section 101b, the ignition section 101c, the self-ignition section 101d, the roasting section 101e, the equalizing section 101f and the cooling section 101g of the belt roasting machine 101.

[0075] The first drying section 101a is used to remove free water in the coal gangue. The second drying section 101b is used to remove crystal water in the coal gangue, and the temperature of the second drying section 101b is higher than that of the first drying section 101a. The ignition section 101c is used to ignite the carbon in the coal gangue. After the coal gangue passes through the first drying section 101a and the second drying section 101b, the temperature of the coal gangue is increased, thereby improving the ignition effect of the ignition section 101c on the coal gangue. The self-ignition section 101d is used to fully burn the carbon in the coal gangue to remove the carbon in the coal gangue. Generally speaking, after the gangue passes through the first drying section 101a, the second drying section 101b, the ignition section 101c and the self-ignition section 101d, not only the carbon and water in the gangue are removed, but also the temperature of the gangue is increased, so as to prepare for the subsequent roasting reaction, reduce the heat load of the roasting section 101e, improve the thermal efficiency, and make the material temperature uniform, creating better conditions for roasting. The roasting section 101e is used for high-temperature roasting of the gangue to increase the activity of silica and alumina in the gangue. The equalizing section 101f is used to ensure that the gangue can evenly reach the required roasting temperature before entering the cooling section 101g, to ensure the uniformity and thoroughness of the material roasting, and to improve the quality of the roasted product. The cooling section 101g is used to cool the roasted gangue.

[0076] The temperature of the first drying section 101a is usually controlled at 200°C to 300°C, the temperature of the second drying section 101b is usually controlled at 300°C to 400°C, the temperature of the ignition section 101c is usually controlled at 550°C to 650°C, the temperature of the self-ignition section 101d is usually controlled at 600°C to 750°C, the temperature of the roasting section 101e is usually controlled at 650°C to 1250°C, the temperature of the soaking section 101f is usually controlled at 600°C to 1100°C, and the temperature of the cooling section 101g is usually controlled at 200°C to 1100°C. The temperatures of the first drying section 101a, the second drying section 101b, the ignition section 101c, the self-ignition section 101d and the roasting section 101e are increasing, while the temperatures of the soaking section 101f, the roasting section 101e and the cooling section 101g are decreasing. By adjusting the operating temperature of the belt roaster 101, the roasted coal gangue can present different physical and chemical properties, so that the coal gangue can meet different resource utilization requirements after roasting.

[0077] For example: when the calcined coal gangue is used as raw material for manufacturing white carbon black and extracting aluminum, the temperature of the first drying section 101a is usually controlled at 200℃~300℃, the temperature of the second drying section 101b is usually controlled at 300℃~400℃, the temperature of the ignition section 101c is usually controlled at 550℃~650℃, the temperature of the spontaneous combustion section 101d is usually controlled at 600℃~700℃, the temperature of the calcination section 101e is usually controlled at 650℃~750℃, the temperature of the equalizing section 101f is usually controlled at 600℃~650℃, and the temperature of the cooling section 101g is usually controlled at 200℃~600℃, so as to achieve better processing effect.

[0078] When the calcined coal gangue is used as the raw material for manufacturing sound-absorbing and noise-reducing expanded clay, the temperature of the first drying section 101a is usually controlled at 200°C ~ 300°C, the temperature of the second drying section 101b is usually controlled at 300°C ~ 400°C, the temperature of the ignition section 101c is usually controlled at 600°C ~ 700°C, the temperature of the spontaneous combustion section 101d is usually controlled at 800°C ~ 900°C, the temperature of the roasting section 101e is usually controlled at 1050°C ~ 1150°C, the temperature of the equalizing section 101f is usually controlled at 850°C ~ 950°C, and the temperature of the cooling section 101g is usually controlled at 200°C ~ 850°C, so as to achieve better processing effects.

[0079] When the calcined coal gangue is used as raw material for manufacturing high-strength concrete, high-temperature kiln refractory materials and ultra-thin high-temperature resistant thermal insulation materials, the temperature of the first drying section 101a is usually controlled at 200℃~300℃, the temperature of the second drying section 101b is usually controlled at 300℃~400℃, the temperature of the ignition section 101c is usually controlled at 650℃~750℃, the temperature of the spontaneous combustion section 101d is usually controlled at 850℃~950℃, the temperature of the roasting section 101e is usually controlled at 1100℃~1250℃, the temperature of the equalizing section 101f is usually controlled at 1000℃~1100℃, and the temperature of the cooling section 101g is usually controlled at 250℃~1100℃, so as to achieve better processing effect.

[0080] In order to adjust the temperature of the belt roaster 101, the cooling section 101g is connected to the first drying section 101a, the ignition section 101c, the self-ignition section 101d, the roasting section 101e and the soaking section 101f, and the roasting section 101e and the soaking section 101f are connected to the second drying section 101b. The coal gangue entering the cooling section 101g from the soaking section 101f has a higher temperature, and the coal gangue in the cooling section 101g is cooled by conveying gas with a lower temperature into the cooling section 101g. The gas conveyed into the cooling section 101g includes cold air from the outside, so the gas output from the cooling section 101g has a higher temperature and a certain amount of oxygen. Therefore, the cooling section 101g is connected with the first drying section 101a, the ignition section 101c, the self-ignition section 101d, the roasting section 101e and the soaking section 101f, so that the temperature and oxygen content of the first drying section 101a, the ignition section 101c, the self-ignition section 101d, the roasting section 101e and the soaking section 101f are adjusted by the gas output from the cooling section 101g. In order to make the temperature of the second drying section 101b higher than the temperature of the first drying section 101a, the roasting section 101e and the soaking section 101f are connected with the second drying section 101b, and the temperature of the gas output from the roasting section 101e and the soaking section 101f is higher than the temperature of the gas output from the cooling section 101g, so that the temperature of the second drying section 101b is adjusted by the gas output from the roasting section 101e and the soaking section 101f.

[0081] In this way, the coal gangue can be roasted, the activity of silicon dioxide and aluminum oxide in the coal gangue can be improved, and the silicon dioxide and aluminum oxide in the coal gangue can be more easily extracted, so that the silicon dioxide and aluminum oxide in the coal gangue can be more efficiently utilized. At the same time, the energy-saving effect of the roasting system 100 is also improved, and energy recycling is realized.

[0082] In some embodiments, Figure 1As shown, the cooling section 101g includes a first cooling section 101h, a second cooling section 101i and a third cooling section 101j, which are arranged in sequence, and the temperatures of the first cooling section 101h, the second cooling section 101i and the third cooling section 101j are successively reduced. Among them, the first cooling section 101h is connected with the self-ignition section 101d, the roasting section 101e and the soaking section 101f, so that the temperature and oxygen content of the self-ignition section 101d, the roasting section 101e and the soaking section 101f are adjusted by the gas output by the first cooling section 101h. The second cooling section 101i is connected with the ignition section 101c, so that the temperature and oxygen content of the ignition section 101c are adjusted by the gas output by the second cooling section 101i. The third cooling section 101j is connected with the first drying section 101a, so that the temperature of the first drying section 101a is adjusted by the gas output by the third cooling section 101j.

[0083] In order to cool the gangue better, the cooling section 101g is provided, including the first cooling section 101h, the second cooling section 101i and the third cooling section 101j, and the temperatures of the first cooling section 101h, the second cooling section 101i and the third cooling section 101j are successively reduced, the temperature of the first cooling section 101h is usually controlled at 500°C to 1100°C, the temperature of the second cooling section 101i is usually controlled at 350°C to 850°C, and the temperature of the third cooling section 101j is usually controlled at 200°C to 350°C. In this way, gradient cooling of the gangue is formed, so that the gangue has a better cooling effect.

[0084] For example: when the calcined coal gangue is used as raw material for manufacturing white carbon black and extracting aluminum, the temperature of the first cooling section 101h is usually controlled at 500℃~600℃, the temperature of the second cooling section 101i is usually controlled at 350℃~500℃, and the temperature of the third cooling section 101j is usually controlled at 200℃~300℃, so as to achieve better cooling effect.

[0085] When the calcined coal gangue is used as the raw material for manufacturing sound-absorbing and noise-reducing expanded clay, the temperature of the first cooling section 101h is usually controlled at 750°C ~ 850°C, the temperature of the second cooling section 101i is usually controlled at 550°C ~ 800°C, and the temperature of the third cooling section 101j is usually controlled at 200°C ~ 350°C to achieve better cooling effect.

[0086] When the calcined coal gangue is used as raw material for manufacturing high-strength concrete, high-temperature kiln refractory materials and ultra-thin high-temperature resistant insulation materials, the temperature of the first cooling section 101h is usually controlled at 950℃~1100℃, the temperature of the second cooling section 101i is usually controlled at 650℃~850℃, and the temperature of the third cooling section 101j is usually controlled at 250℃~350℃ to achieve better cooling effect.

[0087] At the same time, since the temperatures of the first cooling section 101h, the second cooling section 101i and the third cooling section 101j are successively reduced, according to the temperature and oxygen requirements of the first drying section 101a, the ignition section 101c, the self-ignition section 101d, the roasting section 101e and the equalizing section 101f, the gas output from the first cooling section 101h is transported to the self-ignition section 101d, the roasting section 101e and the equalizing section 101f, the gas output from the second cooling section 101i is transported to the ignition section 101c, and the gas output from the third cooling section 101j is transported to the first drying section 101a.

[0088] In some embodiments, Figure 1 As shown, the belt roasting machine 101 includes a main body 102, a roasting belt 103 and a smoke hood 104, wherein the main body 102 has a first drying section 101a, a second drying section 101b, an ignition section 101c, a self-ignition section 101d, a roasting section 101e, a heat equalization section 101f and a cooling section 101g arranged in sequence, the roasting belt 103 is penetrated by the main body 102, the discharge end of the distributor 208 is arranged corresponding to the feed end of the roasting belt 103, the smoke hood 104 is connected to the main body 102, and is covered on the self-ignition section 101d, the roasting section 101e and the heat equalization section 101f, and the smoke hood 104 is connected to the first cooling section 101h.

[0089] The feeding end of the roasting belt 103 is the feeding end of the belt roasting machine 101. The gangue is placed on the roasting belt 103. Through the transportation of the roasting belt 103, the gangue is processed in sequence through the first drying section 101a, the second drying section 101b, the ignition section 101c, the self-ignition section 101d, the roasting section 101e, the equalizing section 101f and the cooling section 101g of the belt roasting machine 101. The smoke hood 104 is provided in the self-ignition section 101d, the roasting section 101e and the equalizing section 101f, and the smoke hood 104 is connected with the first cooling section 101h, so that the gas of the first cooling section 101h enters the smoke hood 104, thereby adjusting the temperature and oxygen content of the self-ignition section 101d, the roasting section 101e and the equalizing section 101f.

[0090] The roasting system 100 further includes a first pipeline 105, a second pipeline 106 and a first fan 107, wherein the inlet of the first pipeline 105 is connected to the second cooling section 101i, the outlet of the first pipeline 105 is connected to the ignition section 101c, the inlet of the second pipeline 106 is connected to the third cooling section 101j, the outlet of the second pipeline 106 is connected to the first drying section 101a, and the first fan 107 is disposed in the second pipeline 106. The gas of the second cooling section 101i is transported to the ignition section 101c through the first pipeline 105, and the gas of the third cooling section 101j is transported to the first drying section 101a through the second pipeline 106. It should be noted that, when the roasting system 100 is running, the gas pressure in the second cooling section 101i is positive pressure, the gas pressure in the ignition section 101c is negative pressure, and the ignition section 101c has a relatively small demand for the amount of gas output by the second cooling section 101i, mainly to promote the ignition of coal gangue, so that the gas of the second cooling section 101i can be directly provided by the first pipeline 105, and the gas of the second cooling section 101i can be delivered to the ignition section 101c without the need to provide a fan. Of course, providing a fan on the first pipeline 105 can increase the gas delivery effect, and the embodiment of the present application does not limit this. In addition, when the roasting system 100 is running, the gas pressure in the third cooling section 101j is positive pressure, and the gas pressure in the first drying section 101a is negative pressure, but the first drying section 101a has a relatively large demand for the amount of gas output by the third cooling section 101j, so that the first fan 107 is provided on the second pipeline 106, so as to improve the effect of gas delivery by the second pipeline 106 under the action of the first fan 107.

[0091] In some embodiments, Figure 1 As shown, the belt roasting machine 101 includes a trolley, which is arranged in the roasting belt 103. Wherein, when the trolley is located at the feeding end of the roasting belt 103, the batching system 200 lays roasted coal gangue with a particle size within the set first threshold range, raw coal gangue with a particle size less than the set second threshold, and raw pellets made of raw coal gangue with a particle size less than the set third threshold in the trolley from bottom to top. The roasted coal gangue is laid on the inner wall of the trolley to protect the trolley. The raw coal gangue is laid in the trolley, and driven by the roasting belt 103, it is processed in sequence through the first drying section 101a, the second drying section 101b, the ignition section 101c, the self-ignition section 101d, the roasting section 101e, the equalizing section 101f and the cooling section 101g, and is finally processed into roasted coal gangue.

[0092] It should be noted that the roasted coal gangue with a particle size within the set first threshold range stored in the third raw material bin 203 is usually derived from the roasted coal gangue processed by the roasting system 100. The roasted coal gangue with a particle size within the set first threshold range is screened out by a screening machine to serve as the raw material in the third raw material bin 203.

[0093] In some embodiments, Figure 1 As shown, the roasting system 100 further includes a third pipeline 108, a second fan 109 and a first valve 110, wherein the inlet of the third pipeline 108 is connected to the roasting section 101e and the soaking section 101f, the outlet of the third pipeline 108 is connected to the second drying section 101b, the second fan 109 is arranged in the third pipeline 108, and the first valve 110 is arranged in the third pipeline 108 and between the outlets of the second fan 109 and the third pipeline 108. Under the action of the second fan 109, the gas of the roasting section 101e and the soaking section 101f is transported to the second drying section 101b, and the gas output from the roasting section 101e and the soaking section 101f is used as a heat source to dry the coal gangue in the second drying section 101b to remove the crystal water in the coal gangue. In addition, a first valve 110 is provided on the third pipeline 108 to adjust the flow of gas entering the second drying section 101b from the roasting section 101e and the soaking section 101f through the first valve 110, thereby adjusting the temperature of the second drying section 101b.

[0094] In some embodiments, Figure 1 As shown, the roasting system 100 also includes a fourth pipeline 111 and a second valve 112, wherein the inlet of the fourth pipeline 111 is connected to the third pipeline 108 and connected between the second fan 109 and the first valve 110, and the second valve 112 is arranged on the fourth pipeline 111. The gas output from the roasting section 101e and the soaking section 101f is transported to the roasting section 101e through the fourth pipeline 111 to recycle the energy. At the same time, the second valve 112 is arranged on the fourth pipeline 111 to adjust the flow of the gas entering the roasting section 101e from the roasting section 101e and the soaking section 101f through the first valve 110, thereby adjusting the temperature of the roasting section 101e.

[0095] In some embodiments, Figure 1As shown, the roasting system 100 also includes a fifth pipeline 113, a third fan 114, a flue gas desulfurization and denitrification device 115 and a sixth pipeline 116, wherein the inlet of the fifth pipeline 113 is connected to the second drying section 101b, the ignition section 101c and the spontaneous combustion section 101d, the third fan 114 is arranged on the sixth pipeline 116, the flue gas desulfurization and denitrification device 115 is connected to the outlet of the fifth pipeline 113, the inlet of the sixth pipeline 116 is connected to the first drying section 101a, and the outlet of the sixth pipeline 116 is connected to the fifth pipeline 113, and is connected between the inlet of the fifth pipeline 113 and the third fan 114. Under the action of the third fan 114, the gas from the second drying section 101b, the ignition section 101c and the spontaneous combustion section 101d enters the fifth pipeline 113, and the gas from the first drying section 101a enters the fifth pipeline 113 through the sixth pipeline 116, and then the gas output from the second drying section 101b, the ignition section 101c, the spontaneous combustion section 101d and the first drying section 101a enters the flue gas desulfurization and denitrification device 115 through the fifth pipeline 113, and finally is discharged after being processed by the flue gas desulfurization and denitrification device 115.

[0096] In some embodiments, Figure 1 As shown, the roasting system 100 further includes a dust collector 117 and a waste heat recovery device 118. The dust collector is arranged in the fifth pipeline 113 and between the outlet of the sixth pipeline 116 and the third fan 114. The waste heat recovery device 118 is arranged in the fifth pipeline 113 and between the inlet of the fifth pipeline 113 and the inlet of the sixth pipeline 116. The dust collector is used to remove dust from the gas entering the fifth pipeline 113. In order to avoid damage to the dust collector 117 due to excessively high temperature of the gas entering the fifth pipeline 113, the waste heat recovery device 118 is provided. Since the temperature of the gas output from the first drying section 101a is relatively low, the dust collector 117 will not be damaged, while the temperature of the gas output from the second drying section 101b, the ignition section 101c and the self-ignition section 101d is relatively high, which will damage the dust collector 117. Therefore, the waste heat recovery device 118 is set on the fifth pipeline 113, and the waste heat recovery device 118 is set between the inlet of the fifth pipeline 113 and the inlet of the sixth pipeline 116 to absorb the heat of the gas output by the second drying section 101b, the ignition section 101c and the spontaneous combustion section 101d, thereby reducing the temperature of the gas output by the second drying section 101b, the ignition section 101c and the spontaneous combustion section 101d, and avoiding damage to the dust collector 117.

[0097] In some embodiments, Figure 1As shown, the roasting system 100 further includes a seventh pipeline 119, a fourth fan 120 and an eighth pipeline 121, wherein the outlet of the seventh pipeline 119 is connected to the cooling section 101g, the fourth fan 120 is connected to the inlet of the seventh pipeline 119, the inlet of the eighth pipeline 121 is connected to the flue gas desulfurization and denitration device 115, and the outlet of the eighth pipeline 121 is connected to the fourth fan 120. Under the action of the fourth fan 120, the external gas with a lower temperature is transported to the cooling section 101g through the seventh pipeline 119 to cool the coal gangue in the cooling section 101g. The eighth pipeline 121 is connected between the flue gas desulfurization and denitration device 115 and the fourth fan 120 to transport the gas treated by the flue gas desulfurization and denitration device 115 to the cooling section 101g, thereby realizing energy recovery. It should be noted that the gas treated by the flue gas desulfurization and denitrification device 115 can be directly discharged to the outside, or can be transported to the cooling section 101g through the eighth pipeline 121, and can be switched according to actual needs. The fourth fan 120 can transport cold air from the outside to the cooling section 101g, or can receive the gas output from the eighth pipeline 121, and can also be switched according to actual needs.

[0098] In some embodiments, Figure 1 As shown, the roasting system 100 further includes a first connecting pipe 122 and a second connecting pipe 123, wherein the inlet of the first connecting pipe 122 is connected to the roasting section 101e, the outlet of the first connecting pipe 122 is connected to the inlet of the third pipeline 108, the inlet of the second connecting pipe 123 is connected to the soaking section 101f, and the outlet of the second connecting pipe 123 is connected to the inlet of the third pipeline 108. The gas in the roasting section 101e is transported to the third pipeline 108 through the first connecting pipe 122, and the gas in the soaking section 101f is transported to the third pipeline 108 through the second connecting pipe 123.

[0099] In some embodiments, Figure 1 As shown, the roasting system 100 further includes a third connecting pipe 124 and a fourth connecting pipe 125, wherein the inlet of the third connecting pipe 124 is connected to the outlet of the seventh pipeline 119, and the outlet of the third connecting pipe 124 is connected to the first cooling section 101h and the second cooling section 101i, and the inlet of the fourth connecting pipe 125 is connected to the outlet of the seventh pipeline 119, and the outlet of the fourth connecting pipe 125 is connected to the third cooling section 101j. The gas in the seventh pipeline 119 is transported to the first cooling section 101h and the second cooling section 101i through the third connecting pipe 124, and the gas in the seventh pipeline 119 is transported to the third cooling section 101j through the fourth connecting pipe 125.

[0100] In some embodiments, Figure 1As shown, the roasting system 100 further includes a third valve 126 and a fourth valve 127, wherein the third valve 126 is disposed on the third connecting pipe 124, and the fourth valve 127 is disposed on the fourth connecting pipe 125. The flow rate of the gas entering the first cooling section 101h and the second cooling section 101i from the third connecting pipe 124 is adjusted by the third valve 126, and the flow rate of the gas entering the third cooling section 101j from the fourth pipeline 111 is adjusted by the fourth valve 127, so as to adjust the temperature and oxygen content of the cooling section 101g.

[0101] It should be noted that, in the roasting system 100, a heat collecting wind box 128 is usually used to collect the gas from each section of the belt roasting machine 101. No partition walls are set between the second drying section 101b, the ignition section 101c and the spontaneous combustion section 101d, and between the first cooling section 101h and the second cooling section 101i. Partition walls are set between the first drying section 101a and the second drying section 101b, between the roasting section 101e and the equalizing section 101f, and between the second cooling section 101i and the third cooling section 101j, so as to separate the two adjacent sections by the partition walls, reduce the temperature impact between the two adjacent sections, and thus ensure the processing effect.

[0102] In some embodiments, Figure 1 As shown, the ignition section 101c is provided with a burner 129 for igniting the gangue. The roasting section 101e is provided with a plurality of burners 129 along the belt roaster 101 for roasting the gangue and adjusting the temperature curve.

[0103] In some implementations, the first valve 110 , the second valve 112 , the third valve 126 , and the fourth valve 127 may be butterfly valves, ball valves, gate valves, etc., which is not limited in the embodiments of the present application.

[0104] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0105] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0106] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0107] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0108] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0109] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0110] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0111] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A batching system, suitable for conveying and arranging coal gangue to a roasting system, characterized in that: The batching system comprises: A first raw material bin is used to store roasted coal gangue with a particle size within a set first threshold range; The second raw material bin is used to store raw coal gangue with a particle size smaller than a set second threshold; A third raw material bin is used to store raw coal gangue with a particle size smaller than a set third threshold, wherein the set third threshold is smaller than the set second threshold; A first quantitative feeder, wherein the discharge port of the first raw material bin is arranged corresponding to the feed end of the first quantitative feeder; A second quantitative feeder, wherein the discharge port of the second raw material bin is arranged corresponding to the feed end of the second quantitative feeder; A third quantitative feeder, wherein the discharge port of the third raw material bin is arranged corresponding to the feed end of the third quantitative feeder; A ball press machine, wherein the discharge end of the third quantitative feeder is arranged corresponding to the feed inlet of the ball press machine; A distributor, the discharging end of the first quantitative feeder, the discharging end of the second quantitative feeder and the discharging port of the ball press are respectively arranged corresponding to the feeding end of the distributor, and the discharging end of the distributor is arranged corresponding to the feeding end of the roasting system.

2. The batching system according to claim 1, characterized in that: The second threshold is set to 190 mm to 210 mm, the third threshold is set to 7 mm to 9 mm, and the particle size of the raw pellets made by the pellet press is 20 mm to 30 mm.

3. The batching system according to claim 2, characterized in that: The batching system also includes a crusher, the discharge port of the second raw material bin is arranged corresponding to the feed port of the crusher, the discharge port of the crusher is arranged corresponding to the feed end of the second quantitative feeder, and the particle size of the raw coal gangue output from the discharge port of the crusher is smaller than a set fourth threshold value, and the set fourth threshold value is smaller than the set second threshold value.

4. The batching system according to claim 3, characterized in that: The fourth threshold is set to be 35 mm to 45 mm.

5. The batching system according to any one of claims 1 to 4, characterized in that: The batching system also includes a roller screening machine, the discharging end of the distributor is arranged correspondingly to the feeding end of the roller screening machine, and the discharging end of the roller screening machine is arranged correspondingly to the feeding end of the roasting system.

6. The batching system according to claim 5, characterized in that: The sieve hole diameter of the roller screening machine corresponds to the set third threshold value, and the set third threshold value is smaller than the set first threshold value; The batching system also includes: a first belt conveyor, wherein a feeding end of the first belt conveyor is arranged at the bottom of the screening part of the roller screening machine; A fourth raw material bin, used for storing adhesive, wherein a discharge port of the fourth raw material bin is arranged corresponding to a feed end of the first belt conveyor; The mixer, the discharge end of the first belt conveyor is arranged correspondingly to the feed port of the mixer, and the discharge port of the mixer is arranged correspondingly to the feed port of the third raw material bin.

7. The batching system according to claim 6, characterized in that: The batching system also includes: A weight loss scale, wherein the discharge port of the fourth raw material bin is arranged correspondingly to the feed port of the weight loss scale, and the discharge port of the weight loss scale is arranged correspondingly to the feed end of the first belt conveyor; An electronic belt scale is arranged on the first belt conveyor.

8. A coal gangue processing system, characterized in that: It comprises a roasting system and a batching system as described in any one of claims 1 to 7, wherein the batching system is used for conveying and arranging coal gangue to the roasting system, and the roasting system is used for roasting raw coal gangue into roasted coal gangue.

9. The gangue processing system according to claim 8, characterized in that: The roasting system comprises a belt roasting machine, the discharge end of the distributor is arranged corresponding to the feed end of the belt roasting machine, the belt roasting machine comprises a first drying section, a second drying section, an ignition section, a self-ignition section, a roasting section, a soaking section and a cooling section which are arranged in sequence, and the temperature of the second drying section is higher than the temperature of the first drying section; The cooling section is connected to the first drying section, the ignition section, the self-ignition section, the roasting section and the soaking section, so that the temperature and oxygen content of the first drying section, the ignition section, the self-ignition section, the roasting section and the soaking section are adjusted by the gas output by the cooling section; The roasting section and the soaking section are both connected to the second drying section, so that the temperature of the second drying section is adjusted by the gas output from the roasting section and the soaking section.

10. The gangue processing system according to claim 9, characterized in that: The belt roasting machine comprises: The main body comprises the first drying section, the second drying section, the ignition section, the self-ignition section, the roasting section, the soaking section and the cooling section which are arranged in sequence; A baking belt is provided through the main body, and the discharge end of the distributor is provided corresponding to the feed end of the baking belt; A trolley, arranged in the baking zone; Among them, when the trolley is located at the feeding end of the roasting belt, the batching system lays the roasted coal gangue with a particle size within the set first threshold range, the raw coal gangue with a particle size smaller than the set second threshold, and the green pellets made of the raw coal gangue with a particle size smaller than the set third threshold in the trolley from bottom to top.

Images