CN103512349A - Rotary kiln applied to ferronickel reduction production technology and construction method thereof - Google Patents
Rotary kiln applied to ferronickel reduction production technology and construction method thereof Download PDFInfo
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- CN103512349A CN103512349A CN201310505814.6A CN201310505814A CN103512349A CN 103512349 A CN103512349 A CN 103512349A CN 201310505814 A CN201310505814 A CN 201310505814A CN 103512349 A CN103512349 A CN 103512349A
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Abstract
The invention discloses a rotary kiln applied to ferronickel reduction production technology and a construction method thereof. The rotary kiln comprises a rotary kiln casing and fire-proof materials bricked in the rotary kiln casing. The rotary kiln is characterized in that a heat-resistant alloy steel cylinder with the same coaxiality as the rotary kiln casing is fixed on the surface of the fire-proof materials. According to the invention, the production efficiency for directly reducing and smelting ferronickel by the rotary kiln is improved, the production cost is reduced, formed rings in the rotary kiln can be processed effectively and timely under the condition that operation of the rotary kiln is not stopped, and the service life of the fire-proof materials used in the reduction concentration phase is prolonged.
Description
Technical field
The invention belongs to nickel-iron smelting rotary kiln for directly reducing field, particularly a kind of rotary kiln and construction method thereof being applied in ferronickel reduction production.
Technical background
At present, domestic ferronickel is produced by the effort of nearly 8 years, go through blast furnace, blast furnace smelting ferronickel, transformation silicomanganese electric furnace, furnace of calcium carbide and other electric furnaces grope to produce ferronickel, Optimal Parameters, and the new electric furnace that starts is produced ferronickel, effort by enterpriser and technical staff explores, Optimal Parameters constantly, form blast furnace, electrosmelting ferronickel and deposit, blast furnace is produced low ferronickel with the low nickel laterite of high ferro, and electric furnace is that raw material is produced nickelic and middle ferronickel with nickelic low iron laterite.Wherein, electrosmelting ferronickel forms two lines: the one, and sintering machine sintering enters electric furnace; The 2nd, rotary kiln sintered hot charging enters electric furnace, i.e. rkef technique.Rkef technique becomes main flow technique with its cost advantage.
Smelting ferronickel originates in Indonesia and Philippine with laterite, and Indonesia's laterite quality and reserves are all better than Philippine.Indonesia puts into effect restriction laterite export policy in recent years continuously, the inaccurate laterite outlet in the end of the year 2014 of Indonesia's laterite, and the continuous research and innovation of its domestic ferronickel manufacturing enterprise's consideration Business survival is to adapt to living environment.Indonesia and Philippine Dou Shi island country and industrial foundation are weak, commercial power seldom, cannot meet the power consumption of the ripe explained hereafter ferronickel as rkef, so utilize rotary kiln for directly reducing smelting ferronickel to become a result of competition among enterprises and living environment selection.
And China's rotary kiln for directly reducing smelting ferronickel is existing in the pilot production stage, the direct-reduction adopting is produced ferronickel with rotary structure as shown in Figure 1, be in rotary kiln shell, to build certain thickness by laying bricks or stones mostly at the thick refractory brick of 250-350mm or castable refractory, be below referred to as refractory material.Utilize existing rotary kiln to carry out in production process, there are two links to make to produce the state in continuous start-stop: first, raw material enters after rotary kiln along with temperature constantly raises, and nickel and iron start reduction, and soft heat state appears in raw material, the raw material of soft heat is with the bonding formation ring formation of the refractory material in rotary kiln, once ring formation forms, and ring formation section rotary kiln internal diameter is dwindled, the rotary kiln internal heat exchange intensity of this section improves, make that this section of temperature raises rapidly, ring formation is more serious, form vicious circle.Its solution is: rotary kiln cooling, operating personnel enters wherein and disposes ring formation with pneumatic pick, then heats up and produce, and has a strong impact on production efficiency.Second, raw material is after soft heat section, the raw material melting along with the rising of temperature increases, the nickel being reduced and iron atom are gathered into large particle, raw material has not glued the refractory material of rotary kiln, but etch refractory material fast, through evidence, refractory material service life is the longest is about 100 days.Due to the restriction of above two sport technique segments, existing rotary kiln for directly reducing is produced ferronickel explained hereafter inefficiency, production cost is high, does not possess the market competitiveness.
Summary of the invention
The object of the invention is for provide a kind of improve rotary kiln for directly reducing smelting ferronickel production efficiency, reduce production costs be applied to rotary kiln and the construction method thereof in ferronickel reduction production, timely and effectively under not stopping kiln state dispose ring formation in rotary kiln, and extend the service life of reduction gathering stage refractory material.
Technical scheme of the present invention:
Be applied to the rotary kiln in ferronickel reduction production, comprise rotary kiln shell and build the refractory material in rotary kiln shell by laying bricks or stones, its special character is: at described refractory surface, be fixed with the heat-resisting alloy steel cylinder with described rotary kiln shell axiality.
The above-mentioned rotary kiln being applied in ferronickel reduction production, described refractory material is fire-resistant pouring material.
The above-mentioned rotary kiln being applied in ferronickel reduction production, the material of described heat-resisting alloy steel cylinder is that heat resisting temperature reaches 500 ℃ of above heat-resisting alloys.
The above-mentioned rotary kiln being applied in ferronickel reduction production, described heat-resisting alloy steel cylinder is formed by the split steel cylinder means of spot welds of a plurality of axialities, to guarantee leaving space between two adjacent split steel cylinders.
The above-mentioned rotary kiln being applied in ferronickel reduction production, the periphery of described split steel cylinder is near a plurality of position-limitting pins of two edges place's uniform welding, a plurality of spacing steel bushings of the corresponding described position-limitting pin position uniform welding of described rotary kiln shell, described position-limitting pin coordinates with spacing steel bushing plug-in mounting.
The above-mentioned rotary kiln being applied in ferronickel reduction production, described heat-resisting alloy steel tube inner surface is along many material rotating plates of axis direction uniform welding, to guarantee material stirring in kiln.
The above-mentioned rotary kiln being applied in ferronickel reduction production, described heat-resisting alloy steel cylinder originates in the longitudinal direction raw material in kiln and starts soft heat section, Ji Yi ring formation district, end in rotary kiln discharge end, in rotary kiln shell before described easy ring formation district, only build refractory material by laying bricks or stones, described refractory material is refractory brick or castable refractory.
A construction method for rotary kiln in ferronickel reduction production, its special character is to comprise the steps:
1, make heat-resisting alloy steel cylinder, described heat-resisting alloy steel cylinder is comprised of a plurality of split steel cylinders, according to design size in advance, on heat-resisting alloy steel plate, amount is determined the required steel plate area of each split steel cylinder and is cut out, the place of keeping to the side, two ends of the steel plate of the pre-formed split steel cylinder after cutting out evenly offers a plurality of circular holes, described in two ends, circular hole quantity is equal and mutually corresponding, after having holed, Plate Welding is become to split steel cylinder;
2, build by laying bricks or stones in rotary kiln process, first a split steel cylinder in prefabricated heat-resisting alloy steel cylinder is supported in rotary kiln shell, keeping split steel cylinder and rotary kiln shell is axiality, circular hole place at split steel cylinder inserts position-limitting pin and is welded and fixed, at the spacing steel bushing of the outside suit of position-limitting pin, described spacing steel bushing one end is welded on rotary kiln shell, and then the inner surface at the corresponding split steel cylinder of rotary kiln shell welds a plurality of anchoring hooks;
3, take split steel cylinder and rotary kiln shell is mould, utilizes the castable refractory of filling in both ring-shaped chambers of forming of vibrating spear tamping, after filling up castable refractory tamping in whole chamber and solidifying, carries out next step;
4, another split steel cylinder is supported in described rotary kiln shell again, and keeps axiality with previous split steel cylinder, the corresponding end of two split steel cylinders is left gap and is adopted means of spot welds, then work progress described in repeating step 2,3;
5, work progress described in repeating step 4, until extend to the discharge end of rotary kiln shell, finishes masonry of Rotary Kiln;
6, at the heat-resisting alloy steel tube inner surface being formed by a plurality of split steel cylinders along many material rotating plates that formed by heat-resisting steel band of axis direction uniform welding, work progress finishes.
The above-mentioned construction method that is applied to the rotary kiln in ferronickel reduction production, its special character is, described heat-resisting alloy steel cylinder starts to install fixing by the easy ring formation location of rotary kiln, easily the rotary kiln inner surface of outer cover before ring formation region is only built refractory material by laying bricks or stones, and described refractory material is refractory brick or castable refractory.
The invention has the beneficial effects as follows:
1, on rotary kiln been provided with internal refractories surface, install heat-resisting alloy steel cylinder additional, when material reaches soft heat state (while arriving the easy ring formation of rotary kiln district), due to heat-resisting alloy steel cylinder smooth surface and larger with the difference of thermal expansion coefficients of material, material is difficult to be bonded in the surface of heat-resisting alloy steel cylinder, and therefore effectively preveting kiln ringing or be difficult for ring formation, when finding ring formation, by rapid take-off and landing rotary kiln temperature, can totally remove rapidly ring formation, not affect manufacturing schedule, significantly improve production efficiency.
2, at 1250-1400 ℃ of temperature conditions Imitatings of production technology, revert back in rotary kiln high temperature nickel and the experiment of iron reduction collection sections selection of refractory, heat-resisting alloy steel shows good corrosion resistance, at refractory surface, install one deck heat-resisting alloy additional, utilize heat-resisting alloy and refractory material jointly to realize performance corrosion-resistant and insulation.Effectively extended rotary kiln refractory material service life, ferronickel production technology can be carried out smoothly.
To sum up, the utilization of heat-resisting alloy significantly improves the production efficiency of rotary kiln for directly reducing smelting ferronickel, and production cost declines to a great extent, and has effectively improved the market competitiveness.
Accompanying drawing explanation
Fig. 1 is existing rotary kiln cross sectional representation;
Fig. 2 is rotary kiln cross sectional representation of the present invention;
Fig. 3 is A portion structural representation in Fig. 2;
Fig. 4 is B portion structural representation in Fig. 2;
Fig. 5 is the longitudinal section schematic diagram of rotary kiln of the present invention.
In figure: rotary kiln shell 1, refractory material 2, fire-resistant pouring material 3, heat-resisting alloy steel cylinder 4, anchoring hook 5, position-limitting pin 6, spacing steel bushing 7, material rotating plate 8, rotary kiln discharge end 9.
The specific embodiment
As shown in Figure 2,3, this rotary kiln comprises rotary kiln shell 1 and builds the refractory material 2 in rotary kiln shell 1 by laying bricks or stones, on described refractory material 2 surfaces, be fixed with the heat-resisting alloy steel cylinder 4 with described rotary kiln shell 1 axiality, described refractory material 2 is fire-resistant pouring material 3.Described heat-resisting alloy steel cylinder 4 originates in the longitudinal direction raw material in kiln and starts soft heat section, Ji Yi ring formation district, end in rotary kiln discharge end 9, in rotary kiln shell before described easy ring formation district, only build refractory material 2 by laying bricks or stones, refractory material 2 is refractory brick or castable refractory herein, adopts refractory brick in the present embodiment.
Described heat-resisting alloy steel cylinder 4 materials are that heat resisting temperature reaches 500 ℃ of above heat-resisting alloys, as heat-resisting alloy 310s or ZG40Cr25Ni20 or ZG35Cr28Ni16 or ZG45Cr26Ni35 or other.In the present embodiment, adopt the heat-resisting alloy 310s by imported from America.Described heat-resisting alloy steel cylinder 4 is formed by the split steel cylinder means of spot welds of a plurality of axialities, and for making to leave space between two adjacent split steel cylinders, thereby while guaranteeing to dry kiln, gas is overflowed.The periphery of described split steel cylinder is located a plurality of position-limitting pins 6 of uniform welding near two edges, a plurality of spacing steel bushings 7 of the corresponding described position-limitting pin 6 position uniform welding of described rotary kiln shell 1, and described position-limitting pin 6 coordinates with spacing steel bushing 7 plug-in mountings.Described heat-resisting alloy steel cylinder 4 inner surfaces are along many material rotating plates of axis direction uniform welding 8, to guarantee material stirring in kiln.Wherein the material of position-limitting pin 6, spacing steel bushing 7 and material rotating plate 8 is identical with heat-resisting alloy steel cylinder 4.
A construction method for rotary kiln in ferronickel reduction production, comprises the steps:
1, make heat-resisting alloy steel cylinder 4, described heat-resisting alloy steel cylinder 4 is comprised of a plurality of split steel cylinders, according to design size in advance, on heat-resisting alloy steel plate, amount is determined the required steel plate area of each split steel cylinder and is cut out, wherein heat-resisting alloy steel plate adopts the heat-resisting alloy 310s of imported from America, steel plate thickness 6-20mm, the length of each split steel cylinder is selected 700mm, split steel cylinder external diameter determines by rotary kiln diameter and refractory thickness, i.e. thickness * 2 of split steel cylinder external diameter=rotary kiln shell 1 internal diameter-fire-resistant pouring material 3.The place of keeping to the side, two ends of the steel plate of the pre-formed split steel cylinder after cutting out evenly offers a plurality of circular holes, described in two ends, circular hole quantity is equal and mutually corresponding, be specially, split steel cylinder is divided equally by 60 degree, on every equal separated time, the drill diameter 22mm of 150mm place, distance edge circular hole is 2, each split steel cylinder 12Ge hole, after having holed becomes Plate Welding split steel cylinder.
2, build by laying bricks or stones in rotary kiln process, first a split steel cylinder in prefabricated heat-resisting alloy steel cylinder 4 is supported in rotary kiln shell 1, keeping split steel cylinder and rotary kiln shell 1 is axiality, in the present embodiment, described heat-resisting alloy steel cylinder 1 starts to install fixing by the easy ring formation location of rotary kiln, easily rotary kiln shell 1 inner surface before ring formation region is only built refractory material 2 by laying bricks or stones, and described refractory material 2 is refractory brick or castable refractory.Circular hole place at split steel cylinder inserts position-limitting pin 6 and is welded and fixed, at the spacing steel bushing 7 of position-limitting pin 6 outside suit, described spacing steel bushing 7 one end are welded on rotary kiln shell 1, wherein, position-limitting pin 6 adopts the round steel of diameter 20mm, spacing steel bushing 7 internal diameter 22mm, wall thickness is greater than 3mm, thickness-the 40mm of length=fire-resistant pouring material 3, material is the heat-resisting alloy 310s of imported from America, and heat resisting temperature is 1800 ℃.Then the inner surface at rotary kiln shell 1 welds a plurality of anchoring hooks 5.
3, take split steel cylinder and rotary kiln shell 1 is mould, in the ring-shaped chamber forming to both, fill in castable refractory 3 and utilize vibrating spear tamping, fill in process, adopt segmentation to fill in method, first fill in the bottom of ring-shaped chamber, after solidifying, rotate again rotary kiln, continue to fill in, repeat this process, after filling up castable refractory tamping in whole chamber and solidifying, carry out next step.
4, again another split steel cylinder is supported in described rotary kiln shell 1, and keep axiality with previous split steel cylinder, the corresponding end of two split steel cylinders is left gap 4-6mm and is adopted means of spot welds, and spot pitch (camber line) is 600mm, then work progress described in repeating step 2,3.
5, work progress described in repeating step 4, until extend to the discharge end 9 of rotary kiln shell 1, finishes masonry of Rotary Kiln.
6, at heat-resisting alloy steel cylinder 4 inner surfaces that formed by a plurality of split steel cylinders along many material rotating plates that formed by heat-resisting steel band 8 of axis direction uniform welding, work progress finishes.Described material rotating plate 8 thickness are 10mm, are highly 30mm, adopt the heat-resisting alloy 310s of imported from America, and adjacent material rotating plate spacing (camber line) minimum is 400mm.
Utilize in the rotary kiln course of work of the present invention, be difficult for occurring ring formation phenomenon, as found ring formation sign, stop heat supply rotary kiln, and utilize the air-cooled rotary kiln of air-introduced machine to inner surface to approach normal temperature, then be warming up to operating temperature, so repeatedly can thoroughly purify ring formation several times.
Claims (9)
1. be applied to the rotary kiln in ferronickel reduction production, comprise and it is characterized in that rotary kiln shell and build the refractory material in rotary kiln shell by laying bricks or stones: at described refractory surface, be fixed with the heat-resisting alloy steel cylinder with described rotary kiln shell axiality.
2. the rotary kiln being applied in ferronickel reduction production according to claim 1, is characterized in that: described refractory material is fire-resistant pouring material.
3. the rotary kiln being applied in ferronickel reduction production according to claim 1, is characterized in that: the material of described heat-resisting alloy steel cylinder is that heat resisting temperature reaches 500 ℃ of above heat-resisting alloys.
4. the rotary kiln being applied in ferronickel reduction production according to claim 1, is characterized in that: described heat-resisting alloy steel cylinder is formed by the split steel cylinder means of spot welds of a plurality of axialities.
5. the rotary kiln being applied in ferronickel reduction production according to claim 1, it is characterized in that: the periphery of described split steel cylinder is near a plurality of position-limitting pins of two edges place's uniform welding, a plurality of spacing steel bushings of the corresponding described position-limitting pin position uniform welding of described rotary kiln shell, described position-limitting pin coordinates with spacing steel bushing plug-in mounting.
6. the rotary kiln being applied in ferronickel reduction production according to claim 1, is characterized in that: described heat-resisting alloy steel tube inner surface is along many material rotating plates of axis direction uniform welding.
7. the rotary kiln being applied in ferronickel reduction production according to claim 1, it is characterized in that: described heat-resisting alloy steel cylinder originates in the longitudinal direction raw material in kiln and starts soft heat section, Ji Yi ring formation district, end in rotary kiln discharge end, in rotary kiln shell before described easy ring formation district, only build refractory material by laying bricks or stones, described refractory material is refractory brick or castable refractory.
8. a construction method that is applied to the rotary kiln in ferronickel reduction production, is characterized in that, comprises the steps:
1), make heat-resisting alloy steel cylinder, described heat-resisting alloy steel cylinder is comprised of a plurality of split steel cylinders, according to design size in advance, on heat-resisting alloy steel plate, amount is determined the required steel plate area of each split steel cylinder and is cut out, the place of keeping to the side, two ends of the steel plate of the pre-formed split steel cylinder after cutting out evenly offers a plurality of circular holes, described in two ends, circular hole quantity is equal and mutually corresponding, after having holed, Plate Welding is become to split steel cylinder;
2), build by laying bricks or stones in rotary kiln process, first a split steel cylinder in prefabricated heat-resisting alloy steel cylinder is supported in rotary kiln shell, keeping split steel cylinder and rotary kiln shell is axiality, circular hole place at split steel cylinder inserts position-limitting pin and is welded and fixed, at the spacing steel bushing of the outside suit of position-limitting pin, described spacing steel bushing one end is welded on rotary kiln shell, and then the inner surface at the corresponding split steel cylinder of rotary kiln shell welds a plurality of anchoring hooks;
3), to take split steel cylinder and rotary kiln shell be mould, utilizes the castable refractory of filling in both ring-shaped chambers of forming of vibrating spear tamping, after filling up castable refractory tamping in whole chamber and solidifying, carries out next step;
4), another split steel cylinder is supported in described rotary kiln shell, and keep axiality with previous split steel cylinder, the corresponding end of two split steel cylinders is left gap and is adopted means of spot welds, then work progress described in repeating step 2,3 again;
5), work progress described in repeating step 4, until extend to the discharge end of rotary kiln shell, finish masonry of Rotary Kiln;
6), at the heat-resisting alloy steel tube inner surface being formed by a plurality of split steel cylinders along many material rotating plates that formed by heat-resisting steel band of axis direction uniform welding, work progress finishes.
9. the construction method that is applied to the rotary kiln in ferronickel reduction production according to claim 8, it is characterized in that: described heat-resisting alloy steel cylinder starts to install fixing by the easy ring formation location of rotary kiln, easily the rotary kiln inner surface of outer cover before ring formation region is only built refractory material by laying bricks or stones, and described refractory material is refractory brick or castable refractory.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911506A (en) * | 2014-04-18 | 2014-07-09 | 长沙有色冶金设计研究院有限公司 | Lifting, air-regulating, heat-replenishing, roasting and decarburizing method of carbon-containing gold mine |
| CN109798772A (en) * | 2017-11-17 | 2019-05-24 | 南京梅山冶金发展有限公司 | A kind of construction method of rotary kiln end kiln tail inner lining refractory |
| CN110142106A (en) * | 2019-05-14 | 2019-08-20 | 佛山市蓝亚环保科技有限公司 | A kind of cooling screening machine of aluminium ash |
| CN110173979A (en) * | 2019-05-14 | 2019-08-27 | 佛山市蓝亚环保科技有限公司 | A kind of aluminium ash separating treatment rotary furnace |
| CN110357130A (en) * | 2019-08-07 | 2019-10-22 | 葫芦岛虹京科技有限公司 | A kind of acidizing fired device and its production method improving lithium carbonate conversion ratio |
| CN111536800A (en) * | 2020-05-14 | 2020-08-14 | 湖州长宜建设有限公司 | Pouring construction method |
| CN111609715A (en) * | 2019-10-28 | 2020-09-01 | 中建材创新科技研究院有限公司 | Refractory brick connecting structure for assembled kiln |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007187430A (en) * | 2005-12-13 | 2007-07-26 | Tdk Corp | Rotary kiln |
| CN201053814Y (en) * | 2007-06-22 | 2008-04-30 | 咸阳陶瓷研究设计院 | Heat-tolerant metal furnace tube continuous external heating type protective atmosphere converter |
| CN102180454A (en) * | 2011-03-02 | 2011-09-14 | 上海大学 | Method for preparing lithium iron phosphate with dynamic sintering method and sintering device thereof |
| CN102305614A (en) * | 2011-07-27 | 2012-01-04 | 中南大学 | Method for detecting and forecasting thickness of accretion of iron ore oxidized pellet rotary kiln |
| CN202254762U (en) * | 2011-08-25 | 2012-05-30 | 咸阳蓝光热工科技有限公司 | Full-atmosphere protection spiral groove type convolution furnace |
| CN202757421U (en) * | 2012-08-24 | 2013-02-27 | 河南省宏达炉业有限公司 | Rotary kiln with fire-proof material diffusers |
-
2013
- 2013-10-24 CN CN201310505814.6A patent/CN103512349A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007187430A (en) * | 2005-12-13 | 2007-07-26 | Tdk Corp | Rotary kiln |
| CN201053814Y (en) * | 2007-06-22 | 2008-04-30 | 咸阳陶瓷研究设计院 | Heat-tolerant metal furnace tube continuous external heating type protective atmosphere converter |
| CN102180454A (en) * | 2011-03-02 | 2011-09-14 | 上海大学 | Method for preparing lithium iron phosphate with dynamic sintering method and sintering device thereof |
| CN102305614A (en) * | 2011-07-27 | 2012-01-04 | 中南大学 | Method for detecting and forecasting thickness of accretion of iron ore oxidized pellet rotary kiln |
| CN202254762U (en) * | 2011-08-25 | 2012-05-30 | 咸阳蓝光热工科技有限公司 | Full-atmosphere protection spiral groove type convolution furnace |
| CN202757421U (en) * | 2012-08-24 | 2013-02-27 | 河南省宏达炉业有限公司 | Rotary kiln with fire-proof material diffusers |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911506A (en) * | 2014-04-18 | 2014-07-09 | 长沙有色冶金设计研究院有限公司 | Lifting, air-regulating, heat-replenishing, roasting and decarburizing method of carbon-containing gold mine |
| CN103911506B (en) * | 2014-04-18 | 2016-10-12 | 长沙有色冶金设计研究院有限公司 | The method of wind concurrent heating roasting decarburization is adjusted in a kind of Carbonaceous gold ore lifting |
| CN109798772A (en) * | 2017-11-17 | 2019-05-24 | 南京梅山冶金发展有限公司 | A kind of construction method of rotary kiln end kiln tail inner lining refractory |
| CN110142106A (en) * | 2019-05-14 | 2019-08-20 | 佛山市蓝亚环保科技有限公司 | A kind of cooling screening machine of aluminium ash |
| CN110173979A (en) * | 2019-05-14 | 2019-08-27 | 佛山市蓝亚环保科技有限公司 | A kind of aluminium ash separating treatment rotary furnace |
| CN110357130A (en) * | 2019-08-07 | 2019-10-22 | 葫芦岛虹京科技有限公司 | A kind of acidizing fired device and its production method improving lithium carbonate conversion ratio |
| CN111609715A (en) * | 2019-10-28 | 2020-09-01 | 中建材创新科技研究院有限公司 | Refractory brick connecting structure for assembled kiln |
| CN111609715B (en) * | 2019-10-28 | 2022-03-29 | 中建材创新科技研究院有限公司 | Refractory brick connecting structure for assembled kiln |
| CN111536800A (en) * | 2020-05-14 | 2020-08-14 | 湖州长宜建设有限公司 | Pouring construction method |
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Effective date of abandoning: 20160323 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |