CN106187550B - A method of siliceous fertilizer is prepared using red mud flocculation agent acid leaching residue - Google Patents
A method of siliceous fertilizer is prepared using red mud flocculation agent acid leaching residue Download PDFInfo
- Publication number
- CN106187550B CN106187550B CN201610619266.3A CN201610619266A CN106187550B CN 106187550 B CN106187550 B CN 106187550B CN 201610619266 A CN201610619266 A CN 201610619266A CN 106187550 B CN106187550 B CN 106187550B
- Authority
- CN
- China
- Prior art keywords
- red mud
- acid leaching
- leaching residue
- flocculation agent
- agent acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
Abstract
The invention discloses a kind of methods for preparing siliceous fertilizer using red mud flocculation agent acid leaching residue, belong to agricultural fertilizer preparation technical field.The present invention is using red mud flocculation agent acid leaching residue as raw material comprising the steps of: 1) pre-processes red mud flocculation agent acid leaching residue；2) red mud flocculation agent acid leaching residue obtained in the previous step is mixed in proportion with potassium hydroxide and potassium carbonate；3) the substance calcining after mixing previous step, it is cooling, levigate；4) the levigate sample of previous step is added into suitable synergist, and adds suitable water, siliceous fertilizer that meet national standards can be obtained.The present invention compensates for the blank that siliceous fertilizer research is prepared with red mud flocculation agent acid leaching residue, and it is convenient that preparation method facilitates, and raw material sources are extensive, production cost is low, have a wide range of application, the siliceous fertilizer produced has significant effect to the growth and volume increase of plant, meets environmentally protective theory.
Description
Technical field
The invention belongs to agricultural fertilizer preparation technical fields, and in particular to a kind of to prepare silicon using red mud flocculation agent acid leaching residue
The method of fertilizer.
Background technique
Siliceous fertilizer belongs to a kind of secondary nutrients.Siliceous fertilizer is classified as the fourth-largest after nitrogen, phosphorus, potassium by international soil circle
Element fertilizer.Whether national soil measurement formula is using silica is lacked as technical standard, and on June 1st, 2004, the Ministry of Agriculture promulgates
The siliceous fertilizer professional standard NY/T 797-2004 completed by units such as China Agriculture Academe Fertilizer Institute, indicates
It tests and promotes by years of researches, siliceous fertilizer has become a kind of new-type fertilizer of 21 century China.
Currently, China, which lacks tripoli earth, accounts for 50 ~ 80% of total area under cultivation or more, and by taking rice as an example, the long-term rice cultivation in China
Area up to more than 3,333 ten thousand hectares, lack tripoli earth account for 50% or more.If whole Applying silicon fertilizers, based on volume increase 10%, only this item
It should can increase production 1,000,000 tons of paddy every year, the production and application for promoting siliceous fertilizer have obviously social and economic benefit.
The kind of siliceous fertilizer mainly has a solubility in citric acid siliceous fertilizer, Water-soluble silicon fertilizer two major classes, solubility in citric acid siliceous fertilizer refer to it is not soluble in water and
It is dissolved in the siliceous fertilizer that can be absorbed by plants after acid, common is mostly the steel slag, flyash, ore of steel mill through high-temperature calcination work
Skill etc. is process, and general amount of application is larger (per acre 25-50 kilograms or so), is suitble to do soil base and be applied, and market price is lower (every
The several hundred members of ton are to thousands of members etc.)；Water-soluble silicon fertilizer, which refers to, is dissolved in the siliceous fertilizer that water can directly be absorbed by plant, and crops are to it
Absorption rate is higher, synthesizes for high temeperature chemistry, production technology is more complex, higher cost, but amount of application is smaller, is generally commonly used for
Foliage-spray, punching is applied and trickle irrigation, can also carry out base and apply and impose, and specific dosage can like silicon situation, local soil according to crop varieties
Depending on the scarce silicon situation of earth and the concrete content of siliceous fertilizer.
China is that the big alumina producing state of the first in the world and country of consumption, yield account for the 39% of global total output, and consumption figure accounts for generation
The 45% of boundary's consumption figure.Red mud is that aluminium industry extracts the pollution waste residue being discharged when aluminium oxide, average 1 ton of oxygen of every production
Change aluminium, incidentally generates 1.0~2.0 tons of red muds.China is used as alumina producing state the biggest in the world, is completed at present the world's largest
Aluminum oxide industry system, year generate about 70,000,000 tons of red mud.
Red mud mineralogical composition is complicated, and essential mineral is serpentine and calcite, and content is 60% ~ 65%, followed by albumen
Stone, gibbsite, goethite, least content is titanium ore, siderite, trona, waterglass, sodium aluminate and caustic soda.Its mine
Object complicated component, and do not meet the mineral assemblage of natural earth.Its chemical component is analyzed, the results showed that, aluminium oxide, oxygen
Change iron content generally all 25% or so, therefore it can be used as aluminium polychloride and the raw material of poly-ferric chloride utilizes hydrochloric acid
The red mud flocculation agent acid leaching residue that acidleach red mud obtains, patent inventor have carried out a large amount of research, its master of preliminary analysis to it
Want ingredient as follows:
Shandong Wei Qiao alumina producer red mud flocculation agent acid leaching residue main chemical compositions
| Ingredient | SiO2 | Al2O3 | CaO | Fe2O3 | TiO2 | K2O | MgO | Cl |
| Content/% | 40.63 | 20.10 | 1.47 | 9.9 | 9.18 | 0.275 | 0.245 | 1.87 |
Since red mud flocculation agent acid leaching residue is acid high, at present almost without being applied, a large amount of accumulation is to underground water, week
Side vegetation and air cause largely to endanger.Through consulting literatures, have at present almost without researcher and mechanism to red mud flocculation
Agent acid leaching residue carries out research on utilization.Inventor is directed to red mud flocculation agent acid leaching residue, using its specific character, by washing, with
Activator mixed calcining is mediated and is granulated, prepares a kind of red mud flocculation agent acid leaching residue siliceous fertilizer.This patent not only avoids red mud wadding
Solidifying pollution of the agent acid leaching residue to environment, is made into fertilizer, its resource utilization is furthermore achieved.
Summary of the invention
The object of the present invention is to provide a kind of method for preparing siliceous fertilizer using red mud flocculation agent acid leaching residue, raw material are easily obtained
It obtains, can be mass-produced and is at low cost.
The technical solution adopted by the present invention to solve the technical problems is:
A method of siliceous fertilizer is prepared using red mud flocculation agent acid leaching residue, comprising the following steps:
(1) red mud flocculation agent acid leaching residue is pre-processed；
(2) first step treated red mud flocculation agent acid leaching residue is uniformly mixed with potassium hydroxide and potassium carbonate；
(3) raw material that second step is uniformly mixed is calcined, it is cooling, levigate later；
(4) raw material by third step after levigate adds synergist, makes up water and stirs evenly, is granulated using pelletizer, dries
It is dry, siliceous fertilizer can be obtained.
Preferably, pretreated method in step (1) are as follows: by red mud flocculation agent acid leaching residue and water be in mass ratio (1 ~ 2):
(3 ~ 5) it mixes, and stirs evenly, after sedimentation 15 ~ 30 hours, take lower layer's solid sediment, 80 ~ 120 DEG C of dryings are levigate.Red mud
Flocculant acid leaching residue water-washing pre-treatment part is to make red mud flocculation agent to remove excessive hydrochloric acid in red mud flocculation agent acid leaching residue
The pH value of acid leaching residue is increased to 3 or so by 0 or so, another purpose be in order to remove as far as possible in red mud flocculation agent acid leaching residue for
Prepare the invalid components such as the inorganic salts of the siliceous fertilizer such as ingredients such as sodium chloride, iron chloride and aluminium chloride.
Preferably, in parts by weight, in step (2) each component raw material proportioning are as follows: red mud flocculation agent acid leaching residue 40 ~
70 parts, 20 ~ 30 parts of potassium hydroxide, 5 ~ 15 parts of potassium carbonate.Experimental design utilizes potassium hydroxide and pretreated red mud flocculation agent acid
Insoluble silica reacts in phase analysis, the soluble silicates such as potassium silicate is generated, to improve its available silicon content.Carbon
While the addition of sour potassium is to reduce production cost, potassium carbonate decomposes at high temperature, generates carbon dioxide, can make finally to calcine
Product porous afterwards, specific surface area increase, its reactivity are further increased, to play the role of synergy.
Preferably, the raw material mixed is placed in Muffle furnace in step (3) and is calcined, calcination temperature is 350 ~ 500 DEG C, is forged
Burning the time is 3 ~ 8 hours.
Preferably, in parts by weight, the synergist in step (4) is 2 ~ 5 parts of waterglass, and abovementioned steps are passed through in addition
The water that sample quality is 5 ~ 10% is made, is granulated in roller pelletizer, control balling-up granularity in 5 ~ 10mm, then 100 ~
130 DEG C of drying are to get the siliceous fertilizer prepared to red mud flocculation agent acid leaching residue.Waterglass itself is a kind of good Water-soluble silicon fertilizer,
The reason of it is also a kind of good tackifier simultaneously, and waterglass is added in this part is having for the siliceous fertilizer that preparation can be improved in a part
The content of silicon is imitated, another its viscosity that last composite granule can be improved improves granulation rate.
Advantages of the present invention: had at present there is no scientific research institution and scholar and prepare siliceous fertilizer work using red mud flocculation agent acid leaching residue
Skill report and research, the present invention compensate for the blank of this part, and inventor is effectively utilized red mud flocculation agent acid leaching residue, belongs to
Resource recycling technology meets environmentally protective requirement, and production investment is low, there is biggish industrial value, can effectively avoid
Environmental pollution.
Specific embodiment
Embodiment 1:
(1) it by red mud flocculation agent acid leaching residue 20kg, water 60kg, stirs evenly, after sedimentation 24 hours, lower layer's solid is taken to settle
Object, 105 DEG C of dryings, the levigate red mud flocculation agent acid leaching residue that obtains that treated；
(2) treated obtained in (1) red mud flocculation agent acid leaching residue, potassium hydroxide, potassium carbonate are respectively as follows: by quality
Red mud flocculation agent acid leaching residue 6kg, potassium hydroxide 3kg, potassium carbonate 1.5kg are uniformly mixed；
(3) by sample obtained in (2) in Muffle furnace 400 DEG C calcine 4 hours, it is cooling, levigate；
(4) levigate material obtained in (3) is added to the waterglass of 0.5kg, the water of 0.5kg is added, in roller pelletizer
In be granulated, control balling-up granularity between 5 ~ 10mm, then 120 DEG C it is obtained by drying to red mud flocculation agent acid leaching residue preparation
Siliceous fertilizer.
The siliceous fertilizer of preparation is with fluosilicic acid in People's Republic of China's agricultural industry criteria NY/T 797-2004 siliceous fertilizer standard
The measurement of potassium capacity method, available silicon content 24.32%, moisture 1.6%, fineness (passing through 250 μm of standard screens) 88%.NY/T is reached
797-2004 siliceous fertilizer standard: available silicon content >=20%, moisture≤3%, fineness (passing through 250 μm of standard screens) >=80%.
Embodiment 2:
(1) it by red mud flocculation agent acid leaching residue 20kg, water 60kg, stirs evenly, after sedimentation 24 hours, lower layer's solid is taken to settle
Object, 80 DEG C of dryings, the levigate red mud flocculation agent acid leaching residue that obtains that treated；
(2) treated obtained in (1) red mud flocculation agent acid leaching residue, potassium hydroxide, potassium carbonate are respectively as follows: by quality
Red mud flocculation agent acid leaching residue 4kg, potassium hydroxide 2kg, potassium carbonate 0.5kg are uniformly mixed；
(3) by sample obtained in (2) in Muffle furnace 350 DEG C calcine 4 hours, it is cooling, levigate；
(4) levigate material obtained in (3) is added to the waterglass of 0.2kg, the water of 0.5kg is added, in roller pelletizer
In be granulated, control balling-up granularity is in 5 ~ 10mm, then 100 DEG C of silicon obtained by drying to the preparation of red mud flocculation agent acid leaching residue
Fertilizer.
The siliceous fertilizer of preparation is with fluosilicic acid in People's Republic of China's agricultural industry criteria NY/T 797-2004 siliceous fertilizer standard
The measurement of potassium capacity method, available silicon content 23.3%, moisture 2.9%, fineness (passing through 250 μm of standard screens) 82%.NY/T is reached
797-2004 siliceous fertilizer standard: available silicon content >=20%, moisture≤3%, fineness (passing through 250 μm of standard screens) >=80%.
Embodiment 3:
(1) it by red mud flocculation agent acid leaching residue 30kg, water 80kg, stirs evenly, after sedimentation 24 hours, lower layer's solid is taken to settle
Object, 105 DEG C of dryings, the levigate red mud flocculation agent acid leaching residue that obtains that treated；
(2) treated obtained in (1) red mud flocculation agent acid leaching residue, potassium hydroxide, potassium carbonate are respectively as follows: by quality
Red mud flocculation agent acid leaching residue 6kg, potassium hydroxide 2.5kg, potassium carbonate 1kg are uniformly mixed；
(3) by sample obtained in (2) in Muffle furnace 400 DEG C calcine 4 hours, it is cooling, levigate；
(4) levigate material obtained in (3) is added to the waterglass of 0.3kg, the water of 0.7kg is added, in roller pelletizer
In be granulated, control balling-up granularity between 5 ~ 10mm, then 120 DEG C it is obtained by drying to red mud flocculation agent acid leaching residue preparation
Siliceous fertilizer.
The siliceous fertilizer of preparation is with fluosilicic acid in People's Republic of China's agricultural industry criteria NY/T 797-2004 siliceous fertilizer standard
The measurement of potassium capacity method, available silicon content 21.3%, moisture 2.1%, fineness (passing through 250 μm of standard screens) 85%.NY/T is reached
797-2004 siliceous fertilizer standard: available silicon content >=20%, moisture≤3%, fineness (passing through 250 μm of standard screens) >=80%.
Embodiment 4:
(1) it by red mud flocculation agent acid leaching residue 40kg, water 100kg, stirs evenly, after sedimentation 24 hours, takes lower layer's solid heavy
Object drops, 120 DEG C of dryings, the levigate red mud flocculation agent acid leaching residue that obtains that treated；
(2) treated obtained in (1) red mud flocculation agent acid leaching residue, potassium hydroxide, potassium carbonate are respectively as follows: by quality
Red mud flocculation agent acid leaching residue 7kg, potassium hydroxide 3kg, potassium carbonate 1.5kg are uniformly mixed；
(3) by sample obtained in (2) in Muffle furnace 500 DEG C calcine 4 hours, it is cooling, levigate；
(4) levigate material obtained in (3) is added to the waterglass of 0.5kg, the water of 1kg is added, in roller pelletizer
It is granulated, control balling-up granularity is in 5 ~ 10mm, then 120 DEG C of siliceous fertilizers obtained by drying to the preparation of red mud flocculation agent acid leaching residue.
The siliceous fertilizer of preparation is with fluosilicic acid in People's Republic of China's agricultural industry criteria NY/T 797-2004 siliceous fertilizer standard
The measurement of potassium capacity method, available silicon content 20.3%, moisture 1.8%, fineness (passing through 250 μm of standard screens) 86%.NY/T is reached
797-2004 siliceous fertilizer standard: available silicon content >=20%, moisture≤3%, fineness (passing through 250 μm of standard screens) >=80%.
Comparative example:
(1) it by red mud flocculation agent acid leaching residue 10kg, water 60kg, stirs evenly, after sedimentation 24 hours, lower layer's solid is taken to settle
Object, 105 DEG C of dryings, the levigate red mud flocculation agent acid leaching residue that obtains that treated；
(2) treated obtained in (1) red mud flocculation agent acid leaching residue, potassium hydroxide, potassium carbonate are respectively as follows: by quality
Red mud flocculation agent acid leaching residue 3kg, potassium hydroxide 1kg, potassium carbonate 0.3kg are uniformly mixed；By sample obtained in (2) in Muffle furnace
In 300 DEG C calcine 4 hours, it is cooling, levigate；
(3) levigate material obtained in (3) is added to the waterglass of 0.3kg, the water of 0.7kg is added, in roller pelletizer
In be granulated, control balling-up granularity is in 5 ~ 10mm, then 120 DEG C of silicon obtained by drying to the preparation of red mud flocculation agent acid leaching residue
Fertilizer.
The siliceous fertilizer of preparation is with fluosilicic acid in People's Republic of China's agricultural industry criteria NY/T 797-2004 siliceous fertilizer standard
The measurement of potassium capacity method, available silicon content 7.3%, moisture 1.8%, fineness (passing through 250 μm of standard screens) 81%.It has been not up to NY/T
797-2004 siliceous fertilizer standard: available silicon content >=20%, moisture≤3%, fineness (passing through 250 μm of standard screens) >=80%.
Finally, it should be noted that obviously, above-described embodiment is only intended to clearly illustrate examples made by the present invention, and is not
Restriction to embodiment.For those of ordinary skill in the art, it can also make on the basis of the above description
Other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.And it is thus amplified
Obvious changes or variations out are still in the protection scope of this invention.
Claims (3)
1. a kind of method for preparing siliceous fertilizer using red mud flocculation agent acid leaching residue, which comprises the following steps:
(1) red mud flocculation agent acid leaching residue is pre-processed；Pretreated method are as follows: red mud flocculation agent acid leaching residue and water are pressed into matter
Amount is than being (1 ~ 2): (3 ~ 5) mixing, and stirs evenly, and after sedimentation 15 ~ 30 hours, takes lower layer's solid sediment, 80 ~ 120 DEG C dry
It is dry, it is levigate；
(2) first step treated red mud flocculation agent acid leaching residue is uniformly mixed with potassium hydroxide and potassium carbonate；
(3) raw material that second step is uniformly mixed is calcined, it is cooling, levigate later；
(4) raw material using third step after levigate adds 2 ~ 5 parts of waterglass as synergist, and sample is made by abovementioned steps in addition
The water that quality is 5 ~ 10%, is granulated in roller pelletizer, and balling-up granularity obtains red in 5 ~ 10mm, 100 ~ 130 DEG C of drying
The siliceous fertilizer of mud flocculant acid leaching residue preparation.
2. a kind of method for preparing siliceous fertilizer using red mud flocculation agent acid leaching residue as described in claim 1, which is characterized in that according to
Parts by weight meter, the raw material proportioning of each component in step (2) are as follows: 40 ~ 70 parts of red mud flocculation agent acid leaching residue, potassium hydroxide 20 ~ 30
Part, 5 ~ 15 parts of potassium carbonate.
3. a kind of method for preparing siliceous fertilizer using red mud flocculation agent acid leaching residue as described in claim 1, which is characterized in that step
(3) raw material mixed is placed in Muffle furnace in and is calcined, calcination temperature is 350 ~ 500 DEG C, and calcination time is 3 ~ 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610619266.3A CN106187550B (en) | 2016-08-02 | 2016-08-02 | A method of siliceous fertilizer is prepared using red mud flocculation agent acid leaching residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610619266.3A CN106187550B (en) | 2016-08-02 | 2016-08-02 | A method of siliceous fertilizer is prepared using red mud flocculation agent acid leaching residue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106187550A CN106187550A (en) | 2016-12-07 |
| CN106187550B true CN106187550B (en) | 2019-02-22 |
Family
ID=57497836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610619266.3A Active CN106187550B (en) | 2016-08-02 | 2016-08-02 | A method of siliceous fertilizer is prepared using red mud flocculation agent acid leaching residue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106187550B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108610098A (en) * | 2016-12-12 | 2018-10-02 | 贵州远盛钾业科技有限公司 | A kind of production method of water-soluble silicon-potassium fertilizer material |
| CN107141172B (en) * | 2017-05-19 | 2020-06-02 | 中国地质大学（北京） | Method for preparing mineral compound fertilizer by sintering red mud acid leaching residue and brucite |
| CN111690810B (en) * | 2019-03-12 | 2021-08-27 | 中南大学 | Red mud recycling-soil treatment method |
| CN113105282B (en) * | 2021-04-28 | 2022-09-27 | 东北大学 | Method for preparing silicon-potassium-calcium compound fertilizer by using calcium-containing red mud |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440324A (en) * | 2008-12-24 | 2009-05-27 | 贵州平坝宏大铝化工有限公司 | Comprehensive utilization of Bayer process red mud |
| CN103922448A (en) * | 2013-01-14 | 2014-07-16 | 中国地质大学（北京） | Method for preparing multi-component flocculant and co-producing composite white carbon black by using red mud |
| CN103924068A (en) * | 2013-01-14 | 2014-07-16 | 中国地质大学（北京） | Pellet binder based on red mud and iron-bearing minerals, and preparation method thereof |
| CN104119161A (en) * | 2014-08-12 | 2014-10-29 | 许盛英 | Method for producing red mud compressed nutrient soil |
-
2016
- 2016-08-02 CN CN201610619266.3A patent/CN106187550B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440324A (en) * | 2008-12-24 | 2009-05-27 | 贵州平坝宏大铝化工有限公司 | Comprehensive utilization of Bayer process red mud |
| CN103922448A (en) * | 2013-01-14 | 2014-07-16 | 中国地质大学（北京） | Method for preparing multi-component flocculant and co-producing composite white carbon black by using red mud |
| CN103924068A (en) * | 2013-01-14 | 2014-07-16 | 中国地质大学（北京） | Pellet binder based on red mud and iron-bearing minerals, and preparation method thereof |
| CN104119161A (en) * | 2014-08-12 | 2014-10-29 | 许盛英 | Method for producing red mud compressed nutrient soil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106187550A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104498050B (en) | A kind of method for producing high activity soil conditioner co-producing sulfuric acid with ardealite and potassium feldspar | |
| CN100389096C (en) | Process for producing slow releasing silicon potassium compound fertilizer by potassium feldspar | |
| CN106187550B (en) | A method of siliceous fertilizer is prepared using red mud flocculation agent acid leaching residue | |
| CN102826926B (en) | Molybdenum tailings acid soil conditioner and production process thereof | |
| CN108947449A (en) | A kind of ardealite ultra-sulphate cement and preparation method thereof | |
| CN104496223B (en) | A kind of barium slag detoxification | |
| CN108484243A (en) | A kind of multiple-effect solubility in citric acid siliceous fertilizer and its preparation method and application | |
| CN105197905B (en) | Extract the production method of phosphorus ore coproduction feed-level calcium biphosphate and technical grade phosphorus ammonium | |
| CN106365899B (en) | A kind of method that industrial residue prepares siliceous fertilizer | |
| CN106915936A (en) | A kind of muck soil composite curing agent and application | |
| CN108456007A (en) | A kind of calcium polyphosphate magnesium fertilizer and preparation method thereof prepared as raw material using phosphoric acid and phosphorus tailing | |
| CN108424206B (en) | Method for preparing silicon-containing compound fertilizer by using fly ash acid method aluminum extraction residues, silicon-containing compound fertilizer and fly ash utilization method | |
| CN104496726A (en) | Method for calcining soil conditioner from phosphoric ore tailing, phosphogypsum and potassium feldspar | |
| CN101880179B (en) | Method for preparing potash fertilizer and building material products from white alkali-making mud | |
| CN101921141B (en) | Method for preparing mineral potassic fertilizer from potassium-enriched rock | |
| CN108424207A (en) | Flyash acid system residue of aluminum-extracted prepares the method containing silicon potassium compound fertilizer and the utilization method containing silicon potassium compound fertilizer and flyash | |
| CN109988047A (en) | A kind of formula and preparation method thereof preparing mineral composite bacterial fertilizer using gangue | |
| CN110373201B (en) | Soil conditioner for quickly and long-acting remediation of cadmium pollution of farmland and preparation method thereof | |
| CN108821628A (en) | A kind of no chlorine high-early (strength) cement grinding aid and preparation method thereof | |
| CN104909886A (en) | Water-soluble slow-release silicon composite fertilizer and preparation method thereof | |
| CN105565352B (en) | A kind of method that aluminum oxide is produced with aluminous fly-ash | |
| CN111807878A (en) | Method for rapidly preparing dealuminized silicon fertilizer from fly ash | |
| CN109652081B (en) | Preparation method of acid soil conditioner | |
| CN110408400A (en) | A kind of metal magnesium slag soil conditioning agent and process for producing same | |
| CN109928836A (en) | A method of mineral organic compound fertilizer is prepared using gangue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |