CN103394302A - Device and method for homogenizing oil shale powder - Google Patents
Device and method for homogenizing oil shale powder Download PDFInfo
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- CN103394302A CN103394302A CN2013103085581A CN201310308558A CN103394302A CN 103394302 A CN103394302 A CN 103394302A CN 2013103085581 A CN2013103085581 A CN 2013103085581A CN 201310308558 A CN201310308558 A CN 201310308558A CN 103394302 A CN103394302 A CN 103394302A
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Abstract
The invention discloses a device and a method for homogenizing oil shale powder. The device is characterized by mainly comprising a round bin, and a homogenizing chamber, a discharging chamber, a high-position unloading device, a low-position unloading device, a soft inflation system, a forced inflation system, a plurality of open type inflation boxes and a roots blower which are arranged in the round bin. By using the device, inflation air passing through the inflation boxes enters the oil shale powder in the round bin so as to be uniformly and fully mixed with the oil shale powder; then the mixed oil shale powder is continuously unloaded by the high-position unloading device connected with the round bin; as the device and the method are used, the fluctuation range of the oil content of the oil shale powder can be reduced to be below +/-0.2%, and the homogenizing coefficient can be up to 8-13.
Description
Technical field
The present invention relates to homogenizer and the homogenization process of powder, particularly a kind of homogenizer of oil shale powder and homogenization process.
Background technology
Oil is one of important strategic resource of China.2012, the crude oil in China demand surpassed 500,000,000 tons, and 2.8 hundred million tons of imported crude oils, external interdependency 56%, and along with the continuous exploitation of crude oil, the external interdependency of crude oil in China will be more and more higher.
China's oil shale storage capacity is huge, and it will be the important supplement to crude oil that oil shale is carried oil.At present, the oil shale of China is put forward oily level of industrial technology and is fallen behind, and most shaft furnace productions that adopt also have only a few to adopt fluidized bed furnace to produce, but the sort of production method that don't work all can cause the waste of granule wax shale and cause secondary pollution.In recent years, along with the progress of technology, some investors will utilize the suspension roasting technology, maybe will build successively large-scale oil shale and carry oily enterprise.Technique before suspension roasting is exactly must be oil shale mine grinding powdering, and makes the powder composition relatively stable; Yet be subjected to the impact of each ore deposit point oil shale composition or mining technology, make unavoidably its composition fluctuation larger, the particularly fluctuation of oil content, carbon content and hydrogen content, can make baking operation become difficult, but also can have influence on grade, oil productivity and the operation cost of oil.
Summary of the invention
The purpose of this invention is homogenizer and the homogenization process that a kind of oil shale powder will be provided, purpose is by the abundant homogenizing of oil shale powder after grinding, oil shale powder chemical composition stability after homogenizing, improve the operating condition of roaster, reduce labour intensity, improve the quality of oil productivity and oil, cut operating costs, increase economic efficiency.
the invention discloses a kind of homogenizer of oil shale powder, mainly comprise supplied materials system (1), distributing device (2), blast pipe (3), circle storehouse (4), levelling chamber (5), levelling chamber's discharging opening (5-2), discharge chamber (5-1), high-order discharger (6), low level discharger (7), weak gas charging system (8), strong gas charging system (9), sphenoid open-type inflatable box (10), the first cuboid open-type inflatable box group (11), the second cuboid open-type inflatable box group (12), inflation connecting pipe (13) in the circle storehouse, inflation connecting pipe (14) and 2 air distributors in levelling chamber, the compositions such as 3 Roots blowers and 10 electrically operated valves.as shown in Figure 1, Figure 2 and Figure 3, in said apparatus, the import of distributing device (2) is communicated with supplied materials system (1), each outlet of distributing device (2) is communicated with circle storehouse top board (4-2), blast pipe (3) arranges perpendicular to discharge chamber top board (5-4) along circle storehouse cylindrical shell (4-1) inwall, and an end sees through discharge chamber top board (5-4) and is communicated with discharge chamber, and the other end passes round storehouse top board (4-2) and is in communication with the outside, the center line of levelling chamber (5) and circle storehouse (4) centerline are on same vertical line, levelling chamber (5) bottom is levelling chamber's cylinder (5-5), levelling chamber (5) top is levelling chamber's cone (5-6), on levelling chamber's base plate (5-7), be fixed with cuboid open-type inflatable box group (11), levelling chamber's cone (5-6) side has the levelling chamber's discharging opening (5-2) that is communicated with discharge chamber (5-1), discharge chamber base plate (5-8) is fixed with cuboid open-type inflatable box group (12), the top of discharge chamber (5-1) sees through circle storehouse cylindrical shell (4-1) and is communicated with high-order discharger (6), the bottom of discharge chamber (5-1) sees through circle storehouse cylindrical shell (4-1) and is communicated with low level discharger (7), levelling chamber's cylinder (5-5) bottom has a plurality of charging apertures (5-3), the sphenoid open-type inflatable box (10) that is fixed on inclined-plane, round storehouse base plate (4-3) is communicated with first air distributor (8-2A) of the first weak gas charging system by pipeline, the first air distributor (8-2A) is communicated with the first Roots blower (8-1A) by pipeline, the cuboid open-type inflatable box (12) that is fixed on the cuboid open-type inflatable box group (11) of levelling chamber's base plate (5-7) and is fixed on discharge chamber base plate (5-8) is communicated with second air distributor (8-2B) of the second weak gas charging system by pipeline, the second air distributor (8-2B) is communicated with by pipeline and the second Roots blower (8-1B), enter the air of sphenoid open-type inflatable box (10) respectively to A and a, B and b, C and c, D and d zone are for equal wind transmission, strong gas charging system (9) comprises the 3rd Roots blower (9-1), the 9th electrically operated valve (9-2) and the tenth electrically operated valve (9-3), the 3rd Roots blower (9-1) is supplied with respectively by air blast the cuboid open-type inflatable box group (11) that is fixed on levelling chamber's base plate (5-7) and is fixed in the cuboid open-type inflatable box (12) on discharge chamber base plate (5-8) by connecting pipe and the 9th electrically operated valve (9-2) and the tenth electrically operated valve (9-3), the air that enters cuboid open-type inflatable box group (11) is that levelling chamber (5) provides equal wind transmission, the air that enters cuboid open-type inflatable box (12) is that discharge chamber (5-1) provides equal wind transmission.
In said apparatus, the gradient of inclined-plane, circle storehouse base plate is 10～20 °, and the gradient of large inclined-plane, circle storehouse base plate is 60～70 °, so that material is mobile, circle bottom of the reservior part becomes several inflatable regions.
The using method of device of the present invention is:
1, a kind of homogenization process of oil shale powder, it is characterized in that using aforesaid device, by fineness, it is-88 μ m≤12%, the oil shale powder of attached water≤1% enters into distributing device (2) from supplied materials system (1), by distributing device (2), be discharged into equably in round storehouse (4), till the lower 4～6m of the extremely round storehouse top board of charging (4-2), open the first and second weak gas charging systems (8), by in storehouse, inflating connecting pipe (13) and sphenoid open-type inflatable box (10), adopt in " to the method for blowing " Xiang Yuanku (4) and inflate, specifically as shown in Figure 2, at first to A-a zone inflation 3～6min, other zone does not have wind to be blown into this moment, after completing A-a blowing inflation, enter immediately next to the blowing inflation of B-b zone, inflationtime is identical with the A-a zone, until complete after C-c and the blowing inflation of D-d zone, enter next circulation, the material of circle in storehouse fully suspended and seethe homogenizing, in every two regional gas replenishment processes, capital is seethed the material in these two zones and is entered levelling chamber by levelling chamber's charging aperture, Roots blower is gases used is fresh air.
2, after weak gas charging system (8) is opened 10-15 minute, need to open strong gas charging system (9), this moment, weak gas charging system also must move, and in the circle storehouse, inflate incessantly, air blast is supplied with respectively to the cuboid open-type inflatable box group (11) that is fixed on levelling chamber's base plate (5-7) and be fixed in the cuboid open-type inflatable box (12) on discharge chamber base plate (5-8), make to enter the material fully fluidization again of levelling chamber, and enter discharge chamber from cone discharging opening in levelling chamber, the powder that mixes continuously draws off by the high-order discharger that is connected with the circle storehouse, when needs are cleared up, residual material draws off from the low level discharger.
The device of this invention is provided with distributing device at cylindrical shell top, circle storehouse, inclined-plane, circle storehouse base plate is provided with aeration tank, levelling chamber, discharge chamber, and design by Roots blower and air distributor and provide equal wind transmission for it, therefore make homogenizing technology have significant substantive progressive, with equipment and technique that the oil shale powder leveling device was not set in the past, compare, have following advantage.
(1) fluctuation range that can make oil content in the oil shale powder by ± 2%～± 6% being reduced to ± below 0.2%, carbon content fluctuation range ± 12% is reduced to ± below 0.25%, homogenization coefficient can reach 8～13;
(2) material component is uniform and stable, for good basis has been established in the production of next process, adopt this Homogenization Mean reduced investment, than other homogenizing storehouse, compare and can save 15～20%, power consumption is economized, generally at 0.15～0.30kWh/t and can greatly improve the operating condition of roaster, reduce labour intensity;
(3) oil-collecting ratio can be brought up to more than 93% by present 70%～75%, and the quality of oil can be brought up to 9800～10100kCal/kg from 9500～9600kCal/kg, remarkable in economical benefits.
The accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention;
Fig. 2 is the open-type inflatable box schematic diagram that is arranged in apparatus of the present invention on base plate;
Fig. 3 is the weak gas charging system schematic diagram of apparatus of the present invention;
Fig. 4 is the strong gas charging system schematic diagram of apparatus of the present invention.
in Fig. 1 and Fig. 2, 1 is the supplied materials system, 2 is distributing device, 3 is blast pipe, 4 is the round storehouse of reinforced concrete material, 4-1 is circle storehouse cylindrical shell, 4-2 is circle storehouse top board, 4-3 is inclined-plane, circle storehouse base plate, 4-4 is large inclined-plane, circle storehouse base plate, 5 is levelling chamber, 5-1 is discharge chamber, 5-2 is levelling chamber's discharging opening, 5-3 is levelling chamber's charging aperture, 5-4 is the discharge chamber top board, 5-5 is cylinder under levelling chamber, 5-6 is cone in levelling chamber, 5-7 is levelling chamber's base plate, 5-8 is the discharge chamber base plate, 6 is high-order discharger, 7 is the low level discharger, 8 is weak gas charging system, wherein in the first weak gas charging system, 8-1A is the first Roots blower, 8-2A is the first air distributor, 8-3A, 8-4A, 8-5A and 8-6A are respectively first, second, the third and fourth electrically operated valve, in the second weak gas charging system, 8-1B is the second Roots blower, 8-2B is the second air distributor, 8-3B, 8-4B, 8-5B and 8-6B are respectively the 5th, the 6th, the the 7th and the 8th electrically operated valve, 9 is strong gas charging system, wherein 9-1 is the 3rd Roots blower, 9-2 and 9-3 are respectively the 9th and the tenth electrically operated valve, 10 is the sphenoid open-type inflatable box, 11 is the first cuboid open-type inflatable box group, 12 is the second cuboid open-type inflatable box group, 13 are inflation connecting pipe in the circle storehouse, 14 is inflation connecting pipe in levelling chamber.
The specific embodiment
Embodiment below in conjunction with this invention is described in detail, but protection scope of the present invention can not limited by example because of the variation on levelling chamber and open-type inflatable box pattern.
Reinforced concrete circle storehouse specification in the embodiment of the present invention is φ 18 * 48m(height).
The cylinder diameter phi 7000mm of levelling chamber in the embodiment of the present invention, be highly 4500mm, 60 ° of cone angles, the discharge chamber specification is 1800(W) * 5500(L) * 6450(H) mm, levelling chamber's discharging opening specification is 2200(W) * 3500(H) mm, levelling chamber has 36 charging apertures, and each specification is 500(W) * 750(H) mm.
High-order discharger in the embodiment of the present invention and low level discharger specification are B500 * 2200mm.
Weak gas charging system in the embodiment of the present invention by the first and second Roots blowers, the first and second air distributors, the first to the 8th electrically operated valve by pipe to connecting to form, wherein: the Roots blower specification is all Q=42.5m
3/ min, P=49kPa, the specification of air distributor is single 4 mouths, the specification of electrically operated valve is DN80, PN0.6MPa.
Strong gas charging system in the embodiment of the present invention is connected to form by pipeline by the 3rd Roots blower, the 9th and the tenth electrically operated valve, and wherein: Roots blower is that specification is Q=27m
3/ min, P=98kPa, the specification of electrically operated valve is DN100, PN0.6MPa.
Sphenoid open-type inflatable box specification in the embodiment of the present invention is B600/B400 * 3000 * 90(H) mm, has 36.
The first cuboid open-type inflatable box group specification B400 in the embodiment of the present invention, length 600～6000mm does not wait, and has 12.
Second cuboid open-type inflatable box group specification B400 * 2200mm in the embodiment of the present invention, have 6.
Blast pipe specification in the embodiment of the present invention is φ 600 * 36500mm.
The round storehouse available capacity 10000t of the homogenizer of the oil shale powder in the embodiment of the present invention.
Embodiment 1
homogenizer structural representation such as Fig. 1 of oil shale powder, Fig. 2, Fig. 3 and shown in Figure 4, comprise supplied materials system (1), distributing device (2), blast pipe (3), circle storehouse (4), levelling chamber (5), discharge chamber (5-1), levelling chamber's discharging opening (5-2), levelling chamber's charging aperture (5-3), discharge chamber top board (5-4), cylinder under levelling chamber (5-5), cone in levelling chamber (5-6), levelling chamber's base plate (5-7), discharge chamber base plate (5-8), high-order discharger (6), low level discharger (7), weak gas charging system (8), strong gas charging system (9), sphenoid open-type inflatable box (10), the first cuboid open-type inflatable box group (11), the second cuboid open-type inflatable box group (12), inflation connecting pipe (13) in the circle storehouse, inflation connecting pipe (14) in levelling chamber.
weak gas charging system (8) in said apparatus comprises the first Roots blower (8-1A), the first air distributor (8-2A), the first electrically operated valve (8-3A), the second electrically operated valve (8-4A), the 3rd electrically operated valve (8-5A) and the 4th electrically operated valve (8-6A), the second Roots blower (8-1B), the second air distributor (8-2B), the 5th electrically operated valve (8-3B), the 6th electrically operated valve (8-4B), the 7th electrically operated valve (8-5B) and the 8th electrically operated valve (8-6B), strong gas charging system (9) in said apparatus comprises the 3rd Roots blower (9-1), the 9th electrically operated valve (9-2) and the tenth electrically operated valve (9-3).
In said apparatus, levelling chamber (5) is communicated with discharge chamber (5-1) by levelling chamber's discharging opening (5-2), and high-order discharger (6) and low level discharger (7) are communicated with discharge chamber (5-1) by circle storehouse cylindrical shell (4-1).
In said apparatus, discharge chamber top board (5-4) is communicated with circle storehouse top board (4-2) by blast pipe 3.
In said apparatus, sphenoid open-type inflatable box (10), the first cuboid open-type inflatable box group (11) and the second cuboid open-type inflatable box group (12) be separately fixed at inclined-plane, round storehouse base plate (4-3), levelling chamber's base plate (5-7) and discharge chamber base plate (5-8) above.
Device of the present invention is provided with distributing device at circle storehouse top, and bottom is provided with inflatable region, levelling chamber, discharge chamber etc. and Roots blower is set and air distributor provides equal wind transmission for it.With the oil shale powder leveling device be not set compare, the fluctuation range that can make oil content in the oil shale powder by ± 2%～± 6% being reduced to ± below 0.2%, carbon content ± 3%～± 12% is reduced to ± below 0.25%, can greatly improve the operating condition of roaster, reduce labour intensity; Oil-collecting ratio can be brought up to more than 93% by present 70%～75%, and the quality of oil can be brought up to 9800～10100kCal/kg from 9500～9600kCal/kg, has improved significantly economic benefit.
The homogenization process of oil shale powder, its feature is comprised of following step: supplied materials enters in the cylindrical shell of round storehouse through distributing device, in the cylindrical shell of circle storehouse, be provided with levelling chamber, bottom is provided with inflatable region, be respectively A, B, C, D, a, b, c, d district, material draws off through the high-position discharge valve through circle storehouse, levelling chamber, discharge chamber successively, Roots blower and air distributor is set and for circle storehouse, levelling chamber and discharge chamber, provides equal wind transmission.Be specially: for the homogenizing wind system, by three Roots blowers, two air distributors, 10 electrically operated valves that connecting pipe connects, formed.Wherein a Roots blower, list four mouth air distributors and four electrically operated valves form the first weak gas charging system; An other Roots blower, list four mouth air distributors and four electrically operated valves form the second weak gas charging system; A Roots blower and two electrically operated valves form strong gas charging system.Eight air outlet slits of the list four mouth air distributors in the first weak gas charging system are connected with the sphenoid open-type inflatable box in A, B, C, D zone with pipeline by four electrically operated valves; Eight air outlet slits of the list four mouth air distributors in the second weak gas charging system are connected with the sphenoid open-type inflatable box in a, b, c, d zone with pipeline by four electrically operated valves; Strong gas charging system is directly by the Roots blower air feed, by cuboid open-type inflatable box group in valve and pipeline and levelling chamber, with cuboid open-type inflatable box group in discharge chamber, is connected respectively.when the first weak gas charging system for the circle storehouse in during the a-quadrant air feed, just in time the second weak gas charging system also to reinforced concrete circle storehouse in a zone air feed (alphabetical A in accompanying drawing 1, B ... c, alphabetical A in d and accompanying drawing 2, B ... c, d is corresponding one by one), so just realized the inflation of A and a inflatable region in round storehouse, the air feed time can be regulated by electrically operated valve, this makes two powders in district be fluidization, enter levelling chamber, in levelling chamber, the strong stirring of gas charging system air M1 of being subject to improving oneself mixes, powder after mixing enters discharge chamber by levelling chamber's discharging opening, here the origin gas charging system air M2 that improves oneself continue to stir, then by the high-position discharge valve, drawn off, after the certain hour interval has been carried out in circle A district, storehouse and the inflation of a district, air distributor B and b mouth have just been taken turns to B district and b district air feed in the round storehouse of correspondence, other C and c mouth, D and d mouth, C and c district in corresponding round storehouse, D and d district, the step of A and a will be repeated, can reach the purpose of the homogenizing of oil shale powder.
Claims (2)
1. the homogenizer of an oil shale powder, is characterized in that this device comprises supplied materials system (1), distributing device (2), blast pipe (3), circle storehouse (4), levelling chamber (5), levelling chamber's discharging opening (5-2), discharge chamber (5-1), high-order discharger (6), low level discharger (7), weak gas charging system (8), strong gas charging system (9), sphenoid open-type inflatable box (10), the first cuboid open-type inflatable box group (11), the second cuboid open-type inflatable box group (12), inflation connecting pipe (13) in the circle storehouse, inflation connecting pipe (14) and 2 air distributors in levelling chamber, 3 Roots blowers and 10 electrically operated valves form, wherein: the import of distributing device (2) is communicated with supplied materials system (1), each outlet of distributing device (2) is communicated with circle storehouse top board (4-2), blast pipe (3) arranges perpendicular to discharge chamber top board (5-4) along circle storehouse cylindrical shell (4-1) inwall, and an end sees through discharge chamber top board (5-4) and is communicated with discharge chamber, and the other end passes round storehouse top board (4-2) and is in communication with the outside, the center line of levelling chamber (5) and circle storehouse (4) centerline are on same vertical line, levelling chamber (5) bottom is levelling chamber's cylinder (5-5), levelling chamber (5) top is levelling chamber's cone (5-6), on levelling chamber's base plate (5-7), be fixed with cuboid open-type inflatable box group (11), levelling chamber's cone (5-6) side has the levelling chamber's discharging opening (5-2) that is communicated with discharge chamber (5-1), discharge chamber base plate (5-8) is fixed with cuboid open-type inflatable box group (12), the top of discharge chamber (5-1) sees through circle storehouse cylindrical shell (4-1) and is communicated with high-order discharger (6), the bottom of discharge chamber (5-1) sees through circle storehouse cylindrical shell (4-1) and is communicated with low level discharger (7), levelling chamber's cylinder (5-5) bottom has a plurality of charging apertures (5-3), the sphenoid open-type inflatable box (10) that is fixed on inclined-plane, round storehouse base plate (4-3) is communicated with first air distributor (8-2A) of the first weak gas charging system by pipeline, the first air distributor (8-2A) is communicated with the first Roots blower (8-1A) by pipeline, the cuboid open-type inflatable box (12) that is fixed on the cuboid open-type inflatable box group (11) of levelling chamber's base plate (5-7) and is fixed on discharge chamber base plate (5-8) is communicated with second air distributor (8-2B) of the second weak gas charging system by pipeline, the second air distributor (8-2B) is communicated with by pipeline and the second Roots blower (8-1B), enter the air of sphenoid open-type inflatable box (10) respectively to A and a, B and b, C and c, D and d zone are for equal wind transmission, strong gas charging system (9) comprises the 3rd Roots blower (9-1), the 9th electrically operated valve (9-2) and the tenth electrically operated valve (9-3), and the 3rd Roots blower (9-1) is supplied with respectively by air blast the cuboid open-type inflatable box group (11) that is fixed on levelling chamber's base plate (5-7) and is fixed in the cuboid open-type inflatable box (12) on discharge chamber base plate (5-8) by connecting pipe and the 9th electrically operated valve (9-2) and the tenth electrically operated valve (9-3), the gradient of circle storehouse inclined-plane base plate (4-3) is 10～20 °, and the gradient of circle storehouse large inclined-plane base plate (4-4) is 60～70 °.
2. the homogenization process of an oil shale powder, it is characterized in that using aforesaid device, by fineness, it is-88 μ m≤12%, the oil shale powder of attached water≤1% enters into distributing device (2) from supplied materials system (1), by distributing device (2), be discharged into equably in round storehouse (4), till the lower 4～6m of the extremely round storehouse top board of charging (4-2), open the first and second weak gas charging systems (8), by in storehouse, inflating connecting pipe (13) and sphenoid open-type inflatable box (10), adopt in " to the method for blowing " Xiang Yuanku (4) and inflate, that is: at first to A-a zone inflation 3～6min, other zone does not have wind to be blown into this moment, after completing A-a blowing inflation, enter immediately next to the blowing inflation of B-b zone, inflationtime is identical with the A-a zone, until complete after C-c and the blowing inflation of D-d zone, enter next circulation, after weak gas charging system (8) is opened 10-15 minute, need to open strong gas charging system (9), air blast is supplied with respectively to the cuboid open-type inflatable box group (11) that is fixed on levelling chamber's base plate (5-7) and be fixed in the cuboid open-type inflatable box (12) on discharge chamber base plate (5-8), make to enter the material fully fluidization again of levelling chamber, and enter discharge chamber from cone discharging opening in levelling chamber, the powder that mixes continuously draws off by the high-order discharger that is connected with the circle storehouse, when needs are cleared up, residual material draws off from the low level discharger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310308558.1A CN103394302B (en) | 2013-07-22 | 2013-07-22 | A kind of homogenizer of oil shale powder and homogenization process |
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| CN201310308558.1A CN103394302B (en) | 2013-07-22 | 2013-07-22 | A kind of homogenizer of oil shale powder and homogenization process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970086A (en) * | 2019-04-29 | 2019-07-05 | 沈阳鑫博工业技术股份有限公司 | A kind of device and method preparing aluminium oxide raw material using the dry red mud of Bayer process |
| CN112169683A (en) * | 2020-09-30 | 2021-01-05 | 江苏威实环境工程有限公司 | Continuous homogenizing silo with low waste discharge |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2425701Y (en) * | 2000-05-19 | 2001-04-04 | 刘志清 | Upper disassembling type homogenization device |
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2013
- 2013-07-22 CN CN201310308558.1A patent/CN103394302B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2425701Y (en) * | 2000-05-19 | 2001-04-04 | 刘志清 | Upper disassembling type homogenization device |
Non-Patent Citations (1)
| Title |
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| 李坚利等: "《水泥工艺学》", 31 January 1999, 武汉理工大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970086A (en) * | 2019-04-29 | 2019-07-05 | 沈阳鑫博工业技术股份有限公司 | A kind of device and method preparing aluminium oxide raw material using the dry red mud of Bayer process |
| CN109970086B (en) * | 2019-04-29 | 2023-10-03 | 沈阳鑫博工业技术股份有限公司 | Device and method for preparing alumina raw material by using Bayer process dry red mud |
| CN112169683A (en) * | 2020-09-30 | 2021-01-05 | 江苏威实环境工程有限公司 | Continuous homogenizing silo with low waste discharge |
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| CN103394302B (en) | 2015-11-18 |
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