CN108530036A - A kind of technique preparing environmental protection brick using phosphorite tailings - Google Patents
A kind of technique preparing environmental protection brick using phosphorite tailings Download PDFInfo
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- CN108530036A CN108530036A CN201810611042.7A CN201810611042A CN108530036A CN 108530036 A CN108530036 A CN 108530036A CN 201810611042 A CN201810611042 A CN 201810611042A CN 108530036 A CN108530036 A CN 108530036A
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- 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
- C04B33/00—Clay-wares
- C04B33/36—Reinforced clay-wares
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- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
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- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/522—Oxidic
- C04B2235/5236—Zirconia
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention belongs to environmental technology fields, are that phosphorite tailings are sent into calcination processing in calcining kiln more particularly to a kind of technique preparing environmental protection brick using phosphorite tailings；By the phosphorite tailings ripening after calcination processing；Phosphorite tailings after ripening are subjected to digestion process with limewash；By the phosphorite tailings grinding after digestion process, phosphorite tailings powder is obtained；Phosphorite tailings powder and cement, clay, Zirconium oxide fibre, water are mixed to form slurries；Slurries are poured, the pre- oxygen molding of steam, obtains adobe body；Adobe body is subjected to steam curing, then high-temperature calcination obtains environmental protection brick.By the way that phosphorite tailings are calcined, are aged and are handled with limewash, so that the internal structure performance of phosphorite tailings is largely improved, the tight ness rating that the internal structure of phosphorite tailings base material combines is higher, the intensity for enhancing phosphorite tailings base material improves the quality of the environmental protection brick prepared as base material using phosphorite tailings.
Description
Technical field
The present invention relates to environmental technology fields, it particularly relates to a kind of technique preparing environmental protection brick using phosphorite tailings.
Background technology
Environmental protection brick is also referred to as air-entrained concrete building block, using very extensively, be used primarily in machinery plant and civil buildings
In materials for wall, filling wall, load-bearing walling and the non-bearing material and surrounding such as floor and roof boarding filling enclosure wall.At present
Environmental protection brick has become the leading products of building material industry, and country is gradually forbidden to use clay solid brick, gradually takes and generation
Be exactly air-entrained concrete building block, steam-pressing brisk.Environmental protection brick is with light-weight, thermal and insulating performance is good, shock resistance is strong, processing
Performance is good, it is good, adaptable to have the characteristics that certain heat-resisting quantity, sound insulation value, can be different according to local different raw material
Condition is carried out amount body and is made surely, and raw material sources are extensive, and river sand, flyash, ore in sand form etc. may be selected, and adaptation to local conditions can be salvaged,
It is environmental, really turn waste into wealth.
With the continuous development of China's phosphorus ore work industry and being continuously increased for social demand, the demand of phosphorus product is also with increasing
Add, the accumulation problem of phosphorus tailing is increasingly severe.The certain transportable elements generations when suffering erosion and in tailing of phosphorus tailing
When chemical transport, it will serious pollution is caused to air and water and soil, it is serious that land deterioration, vegetation can be caused to be destroyed,
Threaten the safety of people and animals.China is up to million mu by the land area of phosphorus tailings pollution at present.
Invention content
In view of this, the purpose of the present invention is phosphorite tailings are used as primary raw material to develop environmental protection brick, to realize phosphorus ore
The recycling of tailing.Environmental protection brick is prepared using phosphorite tailings, can not only effectively solve the ring that phosphorite tailings zone of illuviation comes
Border pollution problem, phosphorite tailings, which are prepared environmental protection brick, can also generate larger economic benefit.
The present invention solves above-mentioned technical problem by the following technical programs：
A kind of technique being prepared environmental protection brick using phosphorite tailings, is included the following steps：
（1）Calcining：Phosphorite tailings are sent into calcination processing in calcining kiln；
（2）Ageing：By the phosphorite tailings ripening after calcination processing；
（3）Digestion：Phosphorite tailings after ripening are subjected to digestion process with limewash；
（4）Grinding：By the phosphorite tailings grinding after digestion process, phosphorite tailings powder is obtained；
（5）Mixing：Phosphorite tailings powder and cement, clay, Zirconium oxide fibre, water are mixed to form slurries；
（6）Molding：Slurries are poured, the pre- oxygen molding of steam, obtains adobe body；
（7）Steam curing：Adobe body is subjected to steam curing；
（8）Sintering：Steam curing treated brick unburnt brick is sent into high-temperature calcination stove and carries out high-temperature calcination processing, calcining temperature
Degree be 1000 ~ 1200 DEG C, the high-temperature calcination time be 10 ~ 12h to get.
The step（1）In, phosphorite tailings are calcined into 4 ~ 6h at a temperature of 400 ~ 600 DEG C.
The step（2）In, the time of ripening is 3 ~ 4d, and temperature is room temperature.
The step（3）In, a concentration of the 30 ~ 50% of limewash.
The step（3）In, the temperature of digestion process is 90 ~ 100 DEG C, and the time is 30 ~ 60min.
The step（4）In, it is 60 ~ 100 mesh that phosphorite tailings, which are ground into fineness,.
The step（5）In, phosphorite tailings powder and the weight ratio of cement, clay, Zirconium oxide fibre, water are（40~60）：
（30~40）：（10~20）：（4~8）：（100~150）.
The step（6）In, the pre- oxygen molding of steam is 2 ~ 4h of holding under 65 ~ 75 DEG C of steam ambient.
The step（7）In, the temperature of steam curing is 120 ~ 136 DEG C, and the time of steam curing is 7 ~ 10h, and steam is supported
The pressure of shield is 2 ~ 3Mpa.
The cement is 42.5R portland cements.
The clay is soft clay or bentonite.
The phosphorite tailings are calculated by mass percentage, and main chemical compositions and content are as follows：CaO15.8~29.4%、
SiO2 51.8~68.7%、Al2O35.9~10.5%、Fe2O3 3.9~7.5%、P2O5 3~6%、MgO2.7~6.5%。
The beneficial effects of the present invention are：
1, by being calcined, being aged by phosphorite tailings and handled with limewash so that the internal structure of phosphorite tailings
Performance is largely improved, and the tight ness rating that the internal structure of phosphorite tailings base material combines is higher, enhances phosphorite tailings
The intensity of base material improves the quality of the environmental protection brick prepared as base material using phosphorite tailings.
2, preparation process of the invention is simple, easy to operate, has saved a large amount of manpower and materials, substantially increases production effect
Rate.
3, raw material of the invention are significantly reduced using phosphorite tailings caused by Wet-process Phosphoric Acid Production as raw material
Cost has not only widened the comprehensive Utilization Ways of phosphorite tailings waste, improves the use of sulphur dioxide of phosphor chemical industry solid waste
Amount, may additionally facilitate the sustainable development of phosphorus chemical industry.
Specific implementation mode
In order to facilitate the understanding of those skilled in the art, below in conjunction with embodiment, the present invention will be further described.
Embodiment is only to the invention for example, not being limitation of the invention, the step of not illustrated in embodiment
It is prior art, is not described in detail herein.
Embodiment one
A kind of technique being prepared environmental protection brick using phosphorite tailings, is included the following steps：
（1）Calcining：Phosphorite tailings are sent into calcination processing in calcining kiln, calcination temperature is 400 DEG C, and the calcination processing time is 4h,
Phosphorite tailings, which are carried out calcining, to be activated, and reactivity is high after activation, is easy to digest, harmful substance is made to pass through pyrolytic
Or it is transformed into inert substance；
（2）Ageing：By the phosphorite tailings ripening after calcination processing, it is 10L, stirring to control the amount of water per 100kg raw materials
Standing 3d after uniformly at room temperature makes its ageing, ageing process that can optimize the performance of phosphorite tailings；
（3）Digestion：Phosphorite tailings after ripening are subjected to digestion process with limewash, the dosage of limewash is to flood phosphorus ore
Tailing is advisable, and a concentration of the 30% of limewash, the temperature of digestion process is 90 DEG C, time 30min, by using phosphorite tailings
Lime water is handled so that raw material is transferred to alkalinity by acid or neutrality so that soluble impurity therein obtains larger journey
The reduction of degree improves the solidifiability of phosphorite tailings, improves the performance of the environmental protection brick of following process；
（4）Grinding：It is 60 mesh that phosphorite tailings after digestion process, which are ground into fineness, obtains phosphorite tailings powder；
（5）Mixing：Phosphorite tailings powder and cement, clay, Zirconium oxide fibre, water are mixed to form slurries, the phosphorite tailings powder
Weight ratio with cement, clay, Zirconium oxide fibre, water is 40：30：10：4：100；
（6）Molding：Slurries are poured, the pre- oxygen molding of steam, the pre- oxygen molding of steam is kept under 65 DEG C of steam ambient
2h obtains adobe body；
（7）Steam curing：Adobe body is subjected to steam curing, the temperature of steam curing is 120 DEG C, and the time of steam curing is
The pressure of 7h, steam curing are 2Mpa；
（8）Sintering：Steam curing treated brick unburnt brick is sent into high-temperature calcination stove and carries out high-temperature calcination processing, calcining temperature
Degree is 1000 DEG C, and the high-temperature calcination time is 10h, that is, obtains environmental protection brick.
The cement is 42.5R portland cements.
The clay is soft clay.
The phosphorite tailings are calculated by mass percentage, and main chemical compositions and content are as follows：CaO21.4%、SiO2
57.6%、Al2O36.1%、Fe2O3 4.3%、P2O54.0%、MgO3.7%。
Embodiment two
A kind of technique being prepared environmental protection brick using phosphorite tailings, is included the following steps：
（1）Calcining：Phosphorite tailings are sent into calcination processing in calcining kiln, calcination temperature is 600 DEG C, and the calcination processing time is 6h,
Phosphorite tailings, which are carried out calcining, to be activated, and reactivity is high after activation, is easy to digest, harmful substance is made to pass through pyrolytic
Or it is transformed into inert substance；
（2）Ageing：By the phosphorite tailings ripening after calcination processing, it is 10L, stirring to control the amount of water per 100kg raw materials
Standing 4d after uniformly at room temperature makes its ageing, ageing process that can optimize the performance of phosphorite tailings；
（3）Digestion：Phosphorite tailings after ripening are subjected to digestion process with limewash, the dosage of limewash is to flood phosphorus ore
Tailing is advisable, and a concentration of the 50% of limewash, the temperature of digestion process is 100 DEG C, time 60min, by using phosphorite tailings
Lime water is handled so that raw material is transferred to alkalinity by acid or neutrality so that soluble impurity therein obtains larger journey
The reduction of degree improves the solidifiability of phosphorite tailings, improves the performance of the environmental protection brick of following process；
（4）Grinding：It is 100 mesh that phosphorite tailings after digestion process, which are ground into fineness, obtains phosphorite tailings powder；
（5）Mixing：Phosphorite tailings powder and cement, clay, Zirconium oxide fibre, water are mixed to form slurries, the phosphorite tailings powder
Weight ratio with cement, clay, Zirconium oxide fibre, water is 60：40：20：8：150；
（6）Molding：Slurries are poured, the pre- oxygen molding of steam, the pre- oxygen molding of steam is kept under 75 DEG C of steam ambient
4h obtains adobe body；
（7）Steam curing：Adobe body is subjected to steam curing, the temperature of steam curing is 136 DEG C, and the time of steam curing is
The pressure of 10h, steam curing are 3Mpa；
（8）Sintering：Steam curing treated brick unburnt brick is sent into high-temperature calcination stove and carries out high-temperature calcination processing, calcining temperature
Degree is 1200 DEG C, and the high-temperature calcination time is 12h, that is, obtains environmental protection brick.
The cement is 42.5R portland cements.
The clay is bentonite.
The phosphorite tailings are calculated by mass percentage, and main chemical compositions and content are as follows：CaO21.4%、SiO2
57.6%、Al2O36.1%、Fe2O3 4.3%、P2O54.0%、MgO3.7%。
Embodiment three
A kind of technique being prepared environmental protection brick using phosphorite tailings, is included the following steps：
（1）Calcining：Phosphorite tailings are sent into calcination processing in calcining kiln, calcination temperature is 500 DEG C, and the calcination processing time is 5h,
Phosphorite tailings, which are carried out calcining, to be activated, and reactivity is high after activation, is easy to digest, harmful substance is made to pass through pyrolytic
Or it is transformed into inert substance；
（2）Ageing：By the phosphorite tailings ripening after calcination processing, it is 10L, stirring to control the amount of water per 100kg raw materials
Standing 4d after uniformly at room temperature makes its ageing, ageing process that can optimize the performance of phosphorite tailings；
（3）Digestion：Phosphorite tailings after ripening are subjected to digestion process with limewash, the dosage of limewash is to flood phosphorus ore
Tailing is advisable, and a concentration of the 40% of limewash, the temperature of digestion process is 95 DEG C, time 50min, by using phosphorite tailings
Lime water is handled so that raw material is transferred to alkalinity by acid or neutrality so that soluble impurity therein obtains larger journey
The reduction of degree improves the solidifiability of phosphorite tailings, improves the performance of the environmental protection brick of following process；
（4）Grinding：It is 80 mesh that phosphorite tailings after digestion process, which are ground into fineness, obtains phosphorite tailings powder；
（5）Mixing：Phosphorite tailings powder and cement, clay, Zirconium oxide fibre, water are mixed to form slurries, the phosphorite tailings powder
Weight ratio with cement, clay, Zirconium oxide fibre, water is 50：35：14：6：120；
（6）Molding：Slurries are poured, the pre- oxygen molding of steam, the pre- oxygen molding of steam is kept under 70 DEG C of steam ambient
3h obtains adobe body；
（7）Steam curing：Adobe body is subjected to steam curing, the temperature of steam curing is 128 DEG C, and the time of steam curing is
The pressure of 8h, steam curing are 2.5Mpa；
（8）Sintering：Steam curing treated brick unburnt brick is sent into high-temperature calcination stove and carries out high-temperature calcination processing, calcining temperature
Degree is 1100 DEG C, and the high-temperature calcination time is 11h, that is, obtains environmental protection brick.
The cement is 42.5R portland cements.
The clay is bentonite.
The phosphorite tailings are calculated by mass percentage, and main chemical compositions and content are as follows：CaO21.4%、SiO2
57.6%、Al2O36.1%、Fe2O3 4.3%、P2O54.0%、MgO3.7%。
Its dimensional discrepancy of environmental protection brick prepared by the present invention reaches the requirement of excellent fired brick in GB5101-2003；Apparent matter
Amount has reached the requirement in GB5101-2003 to imperial and Grade A；Strength grade reaches MU20 strength grades；Water absorption rate is most
Big value<12%, and the saturation coefficient that is averaged<0.85, maximum saturation coefficient<0.9, product is fully achieved right in GB5101-2003
The requirement of weatherability；Product fully meets the requirement of anti-freezing property；Lime blowing reaches first-class or high-class product requirement；It is general
Frost reaches the requirement of high-class product.
Claims (10)
1. a kind of technique preparing environmental protection brick using phosphorite tailings, it is characterised in that include the following steps：
（1）Calcining：Phosphorite tailings are sent into calcination processing in calcining kiln, calcination temperature is 400 ~ 600 DEG C, and the time is 4 ~ 6h；
（2）Ageing：By the phosphorite tailings ripening after calcination processing；
（3）Digestion：Phosphorite tailings after ripening are subjected to digestion process with limewash；
（4）Grinding：By the phosphorite tailings grinding after digestion process, phosphorite tailings powder is obtained；
（5）Mixing：Phosphorite tailings powder and cement, clay, Zirconium oxide fibre, water are mixed to form slurries；
（6）Molding：Slurries are poured, the pre- oxygen molding of steam, obtains adobe body；
（7）Steam curing：Adobe body is subjected to steam curing；
（8）Sintering：Steam curing treated brick unburnt brick is sent into high-temperature calcination stove and carries out high-temperature calcination processing, calcining temperature
Degree be 1000 ~ 1200 DEG C, the high-temperature calcination time be 10 ~ 12h to get.
2. the technique for preparing environmental protection brick using phosphorite tailings as described in claim 1, it is characterised in that：The step（2）In,
The time of ripening is 3 ~ 4d, and temperature is room temperature.
3. the technique for preparing environmental protection brick using phosphorite tailings as described in claim 1, it is characterised in that：The step（3）In,
A concentration of the 30 ~ 50% of limewash.
4. the technique for preparing environmental protection brick using phosphorite tailings as described in claim 1, it is characterised in that：The step（3）In,
The temperature of digestion process is 90 ~ 100 DEG C, and the time is 30 ~ 60min.
5. the technique for preparing environmental protection brick using phosphorite tailings as described in claim 1, it is characterised in that：The step（4）In,
It is 60 ~ 100 mesh that phosphorite tailings, which are ground into fineness,.
6. the technique for preparing environmental protection brick using phosphorite tailings as described in claim 1, it is characterised in that：The step（5）In,
Phosphorite tailings powder and the weight ratio of cement, clay, Zirconium oxide fibre, water are（40~60）：（30~40）：（10~20）：（4~8）：
（100~150）.
7. the technique for preparing environmental protection brick using phosphorite tailings as described in claim 1, it is characterised in that：The step（6）In,
The pre- oxygen molding of steam is 2 ~ 4h of holding under 65 ~ 75 DEG C of steam ambient.
8. the technique for preparing environmental protection brick using phosphorite tailings as described in claim 1, it is characterised in that：The step（7）In,
The temperature of steam curing is 120 ~ 136 DEG C, and the time of steam curing is 7 ~ 10h, and the pressure of steam curing is 2 ~ 3Mpa.
9. the technique for preparing environmental protection brick using phosphorite tailings as described in claim 1, it is characterised in that：The cement is
42.5R portland cements.
10. the technique as described in claim 1 or 6 for preparing environmental protection brick using phosphorite tailings, it is characterised in that：The clay is
Soft clay or bentonite.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482920A (en) * | 2019-09-04 | 2019-11-22 | 昆明川金诺化工股份有限公司 | A kind of method flotation phosphate tailing purification and prepare concrete segment |
| CN116535143A (en) * | 2023-05-08 | 2023-08-04 | 湖北宜化磷石膏科技开发有限公司 | Method for producing lime profile by using flotation phosphate tailings |
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| CN116535143A (en) * | 2023-05-08 | 2023-08-04 | 湖北宜化磷石膏科技开发有限公司 | Method for producing lime profile by using flotation phosphate tailings |
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