CN109384400B - Carbide slag treatment process and system - Google Patents
Carbide slag treatment process and system Download PDFInfo
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- CN109384400B CN109384400B CN201710667316.XA CN201710667316A CN109384400B CN 109384400 B CN109384400 B CN 109384400B CN 201710667316 A CN201710667316 A CN 201710667316A CN 109384400 B CN109384400 B CN 109384400B
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- carbide slag
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- dust
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- 239000002893 slag Substances 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 68
- 238000002156 mixing Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000003825 pressing Methods 0.000 claims abstract description 26
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000292 calcium oxide Substances 0.000 claims abstract description 22
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 18
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 18
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 10
- 239000008188 pellet Substances 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims description 45
- 238000003860 storage Methods 0.000 claims description 31
- 238000001354 calcination Methods 0.000 claims description 20
- 239000008187 granular material Substances 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims 3
- 238000010304 firing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 11
- 238000007599 discharging Methods 0.000 description 5
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 4
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 4
- 239000005997 Calcium carbide Substances 0.000 description 3
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/12—Preheating, burning calcining or cooling in shaft or vertical furnaces
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a carbide slag treatment process and a carbide slag treatment system. The carbide slag treatment process comprises the following steps: firstly, primarily drying, namely adding dry powder into carbide slag with the water content not lower than 35%, and mixing and scattering the mixture; then, the mixture is pressed into balls; and then heating the pellets formed by the ball pressing. Because the traditional method is used for filter pressing and dewatering the carbide slag, the water content can be reduced to about 40% at the minimum, and when the carbide slag is used for preparing calcium oxide or calcium hydroxide, the carbide slag is easy to be bonded into blocks, so that the production efficiency and the production yield are affected. When the process is used for preparing calcium oxide or calcium hydroxide, the water content of the carbide slag can be further reduced by adding the dry powder into the carbide slag, the problem of the carbide slag bonding and blocking is solved, the effect of rapid water removal is achieved, and the high-efficiency industrial production requirement can be met.
Description
Technical Field
The invention relates to a carbide slag treatment process and a carbide slag treatment system.
Background
Acetylene is an important raw material in the organic synthesis industry, and has a great demand amount every year, and calcium carbide is a main raw material for producing acetylene industrially, and when acetylene is produced by adopting calcium carbide, about 1.2 tons of carbide slag (the main component is calcium hydroxide) can be produced per ton of calcium carbide, so that a great amount of carbide slag is produced. The carbide slag produced by acetylene production contains a large amount of water, the form of the carbide slag is slurry, the storage and transportation are difficult, the carbide slag is piled up for a long time, a large amount of land is occupied, the land is polluted and corroded, and the energy waste is caused.
In order to solve such problems, a method for producing lime by using carbide slag has been proposed in the prior art, in which the dehydrated carbide slag having a water content of about 40% is fed to a granulator by a conveyor to be granulated, dried by a drying furnace, and calcined by a rotary kiln to obtain lime (calcium oxide). Although the carbide slag is recycled to a certain extent, the water content of the carbide slag is about 40% after the carbide slag is dehydrated by adopting the existing dehydration mode, the viscosity is high, a large amount of caking exists, even if the carbide slag is granulated by a granulator, the carbide slag can be bonded again in the process of conveying spherical granules to a drying furnace, even the carbide slag is bonded in the drying furnace, the use of the drying furnace is seriously affected, the drying effect of the carbide slag is poor, and the yield is affected.
Disclosure of Invention
The invention aims to provide a carbide slag treatment process with higher yield, and simultaneously aims to provide a carbide slag treatment system suitable for the process.
In order to achieve the above purpose, the technical scheme of the carbide slag treatment process of the invention is as follows: firstly, primarily drying, namely adding dry powder into carbide slag with the water content not lower than 35%, and mixing and scattering the mixture; then, the mixture is pressed into balls; and then heating the pellets formed by the ball pressing.
Because the traditional method is used for filter pressing and dewatering the carbide slag, the water content can be reduced to about 40% at the minimum, and when the carbide slag is used for processing calcium oxide or calcium hydroxide, the carbide slag is easy to be bonded into blocks, so that the production efficiency and the production yield are affected. When the process is used for preparing calcium oxide or calcium hydroxide, the water content of the carbide slag can be further reduced by adding the dry powder into the carbide slag, the problem of the carbide slag bonding and blocking is solved, the effect of rapid water removal is achieved, and the high-efficiency industrial production requirement can be met.
Specifically, according to a second technical scheme of the carbide slag treatment process, on the basis of the first technical scheme, when the temperature for heating the granules is below 580 ℃, calcium hydroxide is generated after the granules are heated.
Or, in a third technical scheme of the carbide slag treatment process, on the basis of the first technical scheme, the granules are calcined at a temperature of more than 580 ℃, and calcium oxide is generated after the granules are calcined.
The invention also provides a fourth technical scheme of the carbide slag treatment process, which is based on the first technical scheme, the second technical scheme or the third technical scheme, the mixture of the water-containing carbide slag and the dry powder is crushed by a crusher after being mixed and scattered, and then the mixture is pressed into balls. Wet carbide slag with the inside being the bonding piece and the material piece of outside for dry powder can be formed when mixing dry powder and the carbide slag that contains more water and break up, can further realize wet carbide slag and dry powder's intensive mixing through the breaker breakage, guarantee carbide slag intensive drying, just so can not produce the caking phenomenon after pressing the ball, be favorable to subsequent heating or calcination.
The invention also provides a technical scheme five of the carbide slag treatment process, which is optimized on the basis of the technical scheme one, the technical scheme two or the technical scheme three, namely, the product generated by heating or calcining is crushed into powder by a crusher and then stored, so that the carbide slag treatment process is convenient for long-term storage and transportation.
The invention also provides a technical scheme II of the carbide slag treatment process, which is further improved on the basis of the technical scheme II, namely, the dry powder added into the carbide slag with the water content not lower than 35% is calcium hydroxide powder generated by heating. The calcium hydroxide powder generated by heating is used as the dry powder to dry the carbide slag, and other materials are not needed to be added in the whole production process, so that the production cost is reduced, and continuous production is convenient to realize.
The invention also provides a technical scheme seven of the carbide slag treatment process, which is further improved on the basis of the technical scheme three, namely, the dry powder added into the carbide slag with the water content not lower than 35 percent is calcium oxide powder generated by calcination. The calcium oxide powder generated by calcination is used as the dry powder to dry the carbide slag, other materials are not needed to be added in the whole production process, and the calcium oxide can react when meeting water, so that the calcium oxide has strong water absorbability, and the dehydration effect of the carbide slag can be improved by adopting the calcium oxide as the dry powder.
The invention also provides a technical scheme eight of the carbide slag treatment process, which is improved on the basis of the technical scheme one, namely, the dry powder added into the carbide slag with the water content not lower than 35 percent is sun-dried or air-dried dry carbide slag. The dried carbide slag is generally a layer of carbide slag on the surface layer of the carbide slag pile, has limited weight, and is mainly used as dry powder in the initial stage of the production process, and is dried when no calcium oxide is produced yet.
The invention also provides a technical scheme III of the carbide slag treatment process, which is further improved on the basis of the technical scheme I, namely, when the granules formed by ball pressing are heated, the generated tail gas is dedusted by a dedusting device, and the dust filtered by the dedusting device is mixed into the heated finished product. The dust generated in the calcination process is carbide slag or calcium oxide, and the dust generated in the heating process is carbide slag or calcium hydroxide, so that the dust is sent into the finished calcium oxide without waste, and the atmospheric pollution is eliminated.
The invention also provides a technical scheme II of the carbide slag treatment process, which is further improved on the basis of the technical scheme V, namely, products generated by heating or calcining carbide slag are crushed into powder and then are sent into a product storage tank, dust filtered by a dust removing device is sent into a dust storage tank, and the product storage tank and the powder in the dust storage tank are conveyed to a finished product bin through a gas conveying device. The product and the dust after the carbide slag treatment are powder, and compared with a conveying belt or other conveying modes, the cost is low through gas conveying, and the powder leakage is not easy to cause.
The technical scheme of the carbide slag treatment system is as follows: the device comprises a mixing and scattering machine for mixing and scattering carbide slag with water content not lower than 35% and dry powder, a ball pressing machine for pressing the mixture after mixing and scattering, and a kiln for heating and calcining granules formed by pressing the ball pressing machine, wherein conveying devices are directly or indirectly connected between the mixing and scattering machine and the ball pressing machine and between the ball pressing machine and the kiln.
According to the carbide slag treatment system, the water-containing carbide slag and the dry powder are mixed and scattered through the mixing scattering machine, so that the carbide slag can be primarily dried, the water content of the carbide slag is reduced, the phenomenon of caking can not occur after the carbide slag passes through the ball pressing, the subsequent calcination is facilitated, and the production efficiency and the yield are improved.
The second technical scheme can be optimized and obtained on the basis of the first technical scheme of the carbide slag treatment system, namely the system further comprises a caking crusher which is arranged between the mixing and scattering machine and the ball pressing machine and is used for crushing caking formed in the mixing and scattering process after the mixture is mixed and scattered and before the ball pressing machine presses balls. Wet carbide slag with the inside being the bonding piece and the material piece of outside for dry powder can be formed when mixing the dry powder and the carbide slag that contains more water and break up, can further realize wet carbide slag and dry powder's intensive mixing through the breaker breakage, guarantee carbide slag intensive drying, just so can not produce the caking phenomenon after pressing the ball, be favorable to subsequent heating and calcination.
The third technical scheme can be optimized based on the first technical scheme of the carbide slag treatment system, namely, the kiln is a sleeve type gas burning shaft kiln.
The fourth technical scheme can be optimized based on the first technical scheme of the carbide slag treatment system, namely, a discharging hole of the kiln is connected with a finished product crusher for crushing the product generated by heating and calcining, and the product is crushed by the finished product crusher, so that the long-term storage and transportation of the product are facilitated.
The technical scheme five can be optimized and obtained on the basis of the technical scheme one of the carbide slag treatment system, namely the system also comprises a finished product bin for storing powdery products, a carbide slag bin for feeding materials to the mixing and scattering machine and a dry powder bin, wherein the finished product bin is communicated with the dry powder bin and provides dry powder for the mixing and scattering machine. Calcium hydroxide generated by heating or calcium oxide powder generated by calcining is used as dry powder to dry carbide slag, and other materials are not needed to be added in the whole production process, so that the production cost is reduced, and continuous production is facilitated.
The sixth technical scheme can be optimized on the basis of the fifth technical scheme of the carbide slag treatment system, namely, the gas outlet of the kiln is communicated with a dust removing device, and a dust bin of the dust removing device is communicated with a finished product bin. The dust generated in the calcination process is calcium hydroxide or calcium oxide, so that the dust is sent into a finished product without waste, and the atmospheric pollution is eliminated.
The technical scheme seven can be optimized and obtained on the basis of the technical scheme six of the carbide slag treatment system, namely the dust bin of the dust removing device is communicated with the finished product bin through the dust storage tank, the finished product crusher is communicated with the finished product bin through the finished product storage tank, and the dust storage tank and the finished product storage tank are both used for conveying materials to the finished product bin through the gas conveying device. The finished product and the dust are powder, and compared with a conveying belt or other conveying modes, the gas conveying device has low cost and is not easy to cause powder leakage.
The eighth technical scheme can be optimized based on the sixth technical scheme of the carbide slag treatment system, namely the dust removing device is a bag type dust remover, and the bag type dust remover has good dust removing effect and convenient dust collection.
The technical scheme III can be optimized based on the technical scheme III of the carbide slag treatment system, namely, the opening and closing of the sealing door of the discharging port at the lower end of the sleeve type gas burning shaft kiln is controlled by the hydraulic discharging system, and the opening and closing of the sealing door of the discharging port are controlled by the hydraulic discharging system, so that the stability is good and the production process is reliable.
The technical scheme ten can be optimized and obtained on the basis of the nine technical schemes of the carbide slag treatment system, namely, the heat pump system for absorbing and utilizing the heat in the high-temperature tail gas discharged by the exhaust port is connected to the exhaust port of the kiln, the heat in the tail gas can be fully absorbed through the heat pump system, the temperature of the tail gas is reduced, the heat recovery is facilitated, dust particles in the tail gas are eliminated when the temperature of the tail gas is reduced, and haze is eliminated.
Drawings
FIG. 1 is a schematic view of a first embodiment of the carbide slag treatment system of the present invention;
fig. 2 is a schematic diagram of a second embodiment of the carbide slag treatment system of the present invention.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
According to the concrete embodiment of the carbide slag treatment system, as shown in fig. 1, the carbide slag treatment system comprises a carbide slag storage bin 10 and a dry powder storage bin 11, wherein the carbide slag storage bin 10 and the dry powder storage bin 11 respectively convey materials in the carbide slag storage bin 10 and the dry powder storage bin 11 to a mixing and scattering machine 13 through a screw feeder 12, and the carbide slag with the water content not lower than 35% conveyed by the carbide slag storage bin 10 and the dry powder conveyed by the dry powder storage bin can be mixed and scattered through the mixing and scattering machine 13, so that the hydrous carbide slag is primarily dried.
The system also comprises a caking crusher 14 communicated with the discharge port of the mixing and scattering machine 13, wet carbide slag with the inside being bonded into blocks and blocks with the outside being dry powder are formed when the dry powder and the carbide slag with more water content are mixed and scattered by the mixing and scattering machine 13, and the wet carbide slag and the dry powder can be further fully mixed by crushing by the caking crusher 14, so that the carbide slag is fully dried.
The system also comprises a double-roller ball press 15 which is connected with the discharge port of the caking crusher 14 in a conveying way, and a sleeve type gas burning shaft kiln 17 which is connected with the double-roller ball press 15 in a conveying way through a belt conveyor 16. The double-roller ball press 15 presses the mixture of the hydrous carbide slag and the dry powder, then the pressed granules are conveyed into a sleeve type gas burning shaft kiln 17 through a belt conveyor to be heated or calcined, and when the spherical granules fall in the shaft kiln after the ball pressing, gaps among the granules are convenient for heat supply air flow to pass through, and are convenient for heating and calcining. Wherein, when the granules are heated at a temperature below 580 ℃, the generated product is calcium hydroxide; when the pellets are calcined at a temperature of 580 ℃ or higher, the resultant product is calcium oxide.
The discharge hole 170 of the sleeve type gas burning shaft kiln 17 is controlled to be opened and closed by a hydraulic discharge system 171, the discharge hole 170 is connected with a finished product crusher 22, the finished product crusher 22 is used for crushing spherical calcium oxide or calcium hydroxide generated by calcination into powder and conveying the powder into a finished product storage tank 23, and the finished product storage tank 23 conveys a finished product of the powder calcium oxide or calcium hydroxide into a finished product bin 25 by a gas conveying device.
The tail gas outlet of the sleeve type gas-fired vertical kiln 17 is connected with a tail gas treatment device, and mainly comprises a bag type dust collector 18 connected to the tail gas outlet, a heat pump system 19 communicated with the gas outlet of the bag type dust collector 18, a sedimentation tank 21 communicated with the gas outlet of the heat pump system 19, and a position after wet dust removal by the sedimentation tank 21 is discharged through a chimney 20. Of course, the bag house in this embodiment may also be replaced by other dust removing devices, such as an electric precipitator or a cyclone collector.
The dust collected in the dust bin of the bag house 18 is transported to a dust storage tank 24 by a scraper conveyor 26, and the dust storage tank 24 is communicated with the finished product bin by a gas transport device and transports the collected dust to a finished product bin 25.
When the system is used for preparing calcium oxide or calcium hydroxide, in the initial stage, namely when no calcium oxide or calcium hydroxide finished product is produced, the dried carbide slag on the surface layer of the carbide slag pile, which is air-dried and sun-dried, can be put into a dry powder material bin to be used as dry powder. Of course, in other embodiments, other materials may be used as the dry powder, such as a dry calcium carbonate powder, and the like.
In the above examples, the aqueous carbide slag and dry powder material were pelletized by a two roll pelletizer, but in other embodiments pellets could be formed by pelletization by a pelletizer.
The invention also provides a second embodiment of the carbide slag treatment system, wherein in the second embodiment, the addition amount of the dry powder is larger, the inside of the carbide slag is wet, the outside of the carbide slag is less and smaller in agglomeration of the dry powder, and the system can not comprise an agglomeration crusher at the moment, and the mixture is directly pressed into balls after being sent out from the mixing and scattering machine.
Examples of carbide slag treatment process of the present invention: the specific steps are the same as the technical process in the embodiment of the carbide slag treatment system, and are not repeated here.
Claims (10)
1. Firstly, primarily drying, adding dry powder into carbide slag with water content not lower than 35%, and mixing and scattering the mixture; then, the mixture is pressed into balls; then heating or calcining the pellets formed by ball pressing; after the mixture of the hydrous carbide slag and the dry powder is mixed and broken up, the mixture is broken by a breaker and then is pressed into balls;
heating the granules at a temperature below 580 ℃ to generate calcium hydroxide after heating the granules, wherein the dry powder added into the carbide slag with the water content not lower than 35% is the calcium hydroxide powder generated by heating; or calcining the granules at a temperature of more than 580 ℃ to generate calcium oxide after the granules are calcined, wherein the dry powder added into the carbide slag with the water content of not less than 35% is calcium oxide powder generated by calcination; or, in the initial stage of production, the dry powder added into the carbide slag with the water content not lower than 35% is sun-dried or air-dried dry carbide slag.
2. The carbide slag treatment process of claim 1, wherein the heated or calcined product is stored after being crushed to a powder by a crusher.
3. The carbide slag treatment process according to claim 1, wherein when the pellets formed by ball pressing are heated, the generated tail gas is dedusted by a dedusting device, and the dust filtered by the dedusting device is mixed into the heated finished product.
4. The carbide slag treatment process according to claim 2, wherein the product produced by heating or calcining the carbide slag is crushed into powder and then fed into the product storage tank, dust filtered by the dust removing device is fed into the dust storage tank, and the powder in the product storage tank and the dust storage tank is conveyed to a finished product bin through the gas conveying device.
5. The carbide slag treatment system is characterized by comprising a mixing and scattering machine, a ball pressing machine and a kiln, wherein the mixing and scattering machine is used for mixing and scattering carbide slag with water content of not less than 35%, the ball pressing machine is used for pressing balls from the mixture after mixing and scattering, the kiln is used for heating and calcining granules formed by pressing the ball pressing machine, and conveying devices are directly or indirectly connected between the mixing and scattering machine and the ball pressing machine and between the ball pressing machine and the kiln; the system further includes a lump breaker disposed between the mixing and breaking machine and the ball press for breaking up lumps formed during the mixing and breaking up after the mixture is mixed and broken up and before the ball press presses.
6. The carbide slag treatment system of claim 5, wherein said kiln is a sleeve gas firing shaft kiln.
7. The carbide slag processing system of claim 5, wherein the kiln outlet is coupled to a product breaker for breaking up the product from the heating and calcining.
8. The carbide slag processing system of claim 5, further comprising a finishing bin for storing the powdered product, a carbide slag bin for feeding the mixing and breaking machine, and a dry powder bin in communication with the dry powder bin and providing dry powder to the mixing and breaking machine.
9. The carbide slag processing system of claim 8, wherein the kiln has a dust removal device in communication with the air outlet and a dust bin in communication with the finished product bin.
10. The carbide slag processing system of claim 9, wherein the dust bin of the dust removal device is communicated with the finished product bin through a dust storage tank, the finished product crusher is communicated with the finished product bin through a finished product storage tank, and the dust storage tank and the finished product storage tank are both transported to the finished product bin through a gas transport device.
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| CN201710667316.XA CN109384400B (en) | 2017-08-07 | 2017-08-07 | Carbide slag treatment process and system |
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| CN111717916B (en) * | 2020-06-03 | 2024-04-12 | 新疆中泰创安环境科技股份有限公司 | Method and device for producing active calcium oxide as calcium carbide raw material by wet method calcium carbide slag |
| CN113720110A (en) * | 2021-08-10 | 2021-11-30 | 沈宁聪 | Material applied to dehydration drying and use method thereof |
| CN115446075B (en) * | 2022-09-13 | 2024-05-17 | 山西中瑞瑞恒建材有限公司 | Carbide slag slurry treatment system and treatment process |
| CN115849736A (en) * | 2022-10-28 | 2023-03-28 | 安徽华塑股份有限公司 | Device for preparing active calcium oxide calcium carbide raw material from calcium carbide slag |
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