CN1724479A - Method of comprehensive utilization of phophogypsum - Google Patents
Method of comprehensive utilization of phophogypsum Download PDFInfo
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- CN1724479A CN1724479A CNA2005100211802A CN200510021180A CN1724479A CN 1724479 A CN1724479 A CN 1724479A CN A2005100211802 A CNA2005100211802 A CN A2005100211802A CN 200510021180 A CN200510021180 A CN 200510021180A CN 1724479 A CN1724479 A CN 1724479A
- Authority
- CN
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- Prior art keywords
- phosphogypsum
- order
- layered silicate
- acid
- comprehensive utilization
- Prior art date
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- Granted
Links
- 238000000034 method Methods 0.000 title claims description 23
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims abstract description 27
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 23
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 239000010902 straw Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 5
- 239000011707 mineral Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 150000003863 ammonium salts Chemical class 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 235000013312 flour Nutrition 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000002686 phosphate fertilizer Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 2
- GFIKIVSYJDVOOZ-UHFFFAOYSA-L calcium;fluoro-dioxido-oxo-$l^{5}-phosphane Chemical compound [Ca+2].[O-]P([O-])(F)=O GFIKIVSYJDVOOZ-UHFFFAOYSA-L 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 12
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical group O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 abstract description 10
- 239000013078 crystal Substances 0.000 abstract description 5
- 239000003337 fertilizer Substances 0.000 abstract description 5
- 150000007524 organic acids Chemical class 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 4
- 239000002689 soil Substances 0.000 abstract description 4
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004021 humic acid Substances 0.000 abstract description 2
- 235000015097 nutrients Nutrition 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 235000005985 organic acids Nutrition 0.000 abstract 1
- 230000008569 process Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000004576 sand Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 239000011229 interlayer Substances 0.000 description 6
- 229910052622 kaolinite Inorganic materials 0.000 description 6
- 230000009466 transformation Effects 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000012827 research and development Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000446313 Lamella Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000010433 feldspar Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000002114 nanocomposite Substances 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052604 silicate mineral Inorganic materials 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229910002707 Al–O–H Inorganic materials 0.000 description 1
- 229910018516 Al—O Inorganic materials 0.000 description 1
- 229910003849 O-Si Inorganic materials 0.000 description 1
- 229910003872 O—Si Inorganic materials 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000271 synthetic detergent Substances 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
By utilizing the 'crystal' nucleon action of the industrial residue phosphogypsum crystal grain and at the presence of auxiliary actions of the organic acids (such as humic acid transformed from crop stalks through fast decomposition action), the 2:1 type sheet silicate structure (montmorillonite) is transformed into 1:1 type porous sheet silicate of porcelain clay structure, rigid column support is formed between the layers, the porous structure can substantially increase specific surface area, more moisture and nutrient medium can be embedded, thus all-natural ecological desert-treatment material can be prepared for combining the functions of water retention, fertilizer accumulation, slow release and improving soil structure.
Description
Technical field
The present invention relates to the comprehensive utilization of waste, especially the comprehensive utilization of phosphogypsum method.
Background technology
Phosphogypsum is the industrial residue that phosphoric acid factory, phosphate fertilizer plant and some synthetic detergent factory discharge.Discharging enormous amount (for example one ton of phosphoric acid of the every production of phosphoric acid factory will discharge 4.5 tons of phosphogypsums), often pile up like a mountain, and ecotope is caused severe contamination.In order to save resource, improve the ecological environment, various countries have carried out unremitting research at the phosphogypsum changing waste into resources aspect utilizing.It utilizes and mainly to concentrate on the cement building material aspect, the also useful ammonium sulfate of producing, the improvement alkaline land soil, recently also utilize phosphogypsum to do the patent report of fertilizer (application number: 88107910.3,01139524.9) in addition.The phosphogypsum changing waste into resources utilization number of working as of success is referred to as 30,000 tons of phosphorus ammoniums of coproduction of " three, four, six engineerings ", 40,000 tons of sulfuric acid, 60,000 tons of complex cement technology, but through facts have proved for many years, still there are problems, causing comprehensive utilization of phosphogypsum to remain a very big difficult problem so far, also is the focus of research in the current and expected future long duration.Wherein, be used for the research and development of layered silicate, have crucial meaning with the preparation sand control material.
For the research and development of layered silicate, existing both at home and abroad many reports.Be referred to as the polynite that natural nano-material has 2: 1 structures, the modes of handling that organise that adopt increase its structure lamella interlamellar spacing with nanoscale more, and be limellar stripping and being dispersed in the body material under the effect in external force further with body material (as polymkeric substance) blend the time, finally be prepared into layered silicate/polymer nanocomposites and have excellent performance.This is the research and development of recent years to the tool technology content of layered silicate.Also study in recent years in addition utilizing layered silicate to prepare pillared type layered silicate matrix material.Pillared montmorillonite demonstrates wide application potential as a kind of novel porous material in fields such as catalyzer and support of the catalyst, environment-friendly materials (selected adsorbent), ion-exchanger, electro-conductive material, biomaterial, preservation material and nanocomposites.(CN1470486, CN1298853), as the improvement of sandy land, its effect is highly significant (CN1487053) also then to have the effect of inhaling fertile, solid fertilizer, slowly-releasing as fertilizer carrier.Yet this pillared type layered silicate (pillared montmorillonite) still is 2: 1 a laminate structure, and pillared ionic is introduced and just supportted interlamellar spacing big, and the raising of porous and specific surface area is limited.
Summary of the invention
The objective of the invention is to seek a kind of novel method of effectively utilizing phosphogypsum.
The present invention also aims to find and a kind ofly the layered silicate of 2: 1 structures can be changed into the method for 1: 1 kaolin structure, thereby significantly improve the porous rate and the specific surface area of material.
Another object of the present invention just provides a kind of All Pure Nature ecologic sand control novel material by the inventive method preparation.
Phosphogypsum comprehensive utilization novel method of the present invention, may further comprise the steps: (1) makes 1: 2 slip of solid-to-liquid ratio with phosphogypsum (80 order), adds mineral acid, and the PH of control solution is 1.2～2, mixes at 90～95 ℃ and gives processing in 1～1.5 hour; (2) wait to give after the phosphogypsum slurry temperature of handling reduces to below 80 ℃, the adding solid-to-liquid ratio is 1: 2 layered silicate (80 an order) slip, the layered silicate dry weight is 3～5 times of phosphogypsum dry weight, control PH is 1.2～2, stirring reaction 10～20 minutes, the straw powder (20 order) that adds the matting processing that is equivalent to layered silicate dry weight 40%～60% then, control PH＜3,60～70 ℃ of temperature, stirring reaction 20～30 minutes adds ammonium salt, adjusting PH is 5～6, continue stirring reaction 20 minutes, and added the straw powder (20 order) of the matting processing that is equivalent to layered silicate dry weight 15%～25% once more, keep 60～70 ℃ of temperature, continue stirring reaction discharging in 10 minutes, the straw powder (20 order) that adds low-grade phosphate ore stone flour (80 order) or matting processing at last is to can heaped-up, and mixing is piled up slaking 15～20 days.
Described mineral acid is sulfuric acid, phosphoric acid, positive silicic acid wherein one or more mixing acid or the production of phosphate fertilizer mixing acid that early stage, the calcium monofluorophosphate ore pulp produced after acidolysis; Layered silicate is sodium-based montmorillonite or calcium-base montmorillonite; Described ammonium salt is volatile salt or bicarbonate of ammonia;
The present invention utilizes phosphogypsum crystal grain " nucleus " effect, organic acid (as through the stalk of fast rotten technical finesse and the humic acid that changes into) booster action under, with the structural transformation of 2: 1 type layered silicates is the porous laminated silicate of 1: 1 type kaolin structure, it is pillared that interlayer forms rigidity, porous has increased substantially specific surface area, can nested more moisture and nutrition base, thus prepare have water conservation, hold fertilizer, slowly-releasing also has the All Pure Nature ecologic sand control novel material that improves the Soil structure function simultaneously.
2: 1 type layer silicate minerals, its structural unit layer are by two layers of silicon-oxy tetrahedron folder one deck alumina octahedral sheet, connect by shared Sauerstoffatom between the two, change into kaolinic 1: 1 type structure, relate to the conversion and the reconstruction problem of crystalline structure.
Type layered silicate lamella internal surface was adsorbed with K in 2: 1
+, Na
+, Ca
2+, Mg
2+Deng positively charged ion, in the sour environment that organic acid participates in, organic acid at first with these interlayer cation generation complexing actions, it is taken out of from interlayer, then H
2O, H
+Enter interlayer with-COOH plasma, under these ionic effects, top layer Si-O tetrahedron breaks with the octahedra Al-O-Si key that links to each other of Al-O, forms the Al-O-H key, the leaching stripping of the unnecessary silicon of simultaneous, formation kaolinite domain in its structural sheet.The formation of kaolinite domain is the key that can this process be proceeded with increasing.In chemistry and the chemical industry synthetic reaction process, normal add " nucleus " comes the acceleransstoff crystallisation process.Be transformed in the kaolinite process at montmorillonite and mica, the existence of gypsum microcrystal is equivalent to the effect of " nucleus ", thereby makes the structural transformation of mineral be easy to carry out.Generally speaking, form in the kaolinic process in feldspar (having 2: 1 type structures equally) dissolving, feldspar is dissolved fully, and crystallization forms kaolinite on new dissolved substance then, this process can be regarded the crystallisation process that nothing " nucleus " participates in as, thereby relatively slowly.Artificial adding phosphogypsum crystal grain can play the effect of " nucleus " in technical process, quickens the transformation process.Along with the reaction continue carry out, the positively charged ion that is dissolved constantly runs off, the kaolinite domain constantly increases, the type structural sheet was replaced by the kaolinite structure layer of 1: 1 type in final 2: 1.Therefore, at 2: 1 type layer silicate minerals in the process that kaolinite transforms, the dissolving of the local crystal layer of simultaneous and the formation of new texture layer.Organic acid participates in then having quickened this process, and the adding of phosphogypsum is the core that elementary " domain " quickens formation.
The type structural sheet changed 1: 1 type structural sheet in 2: 1, the interlayer bonding force is weakened, and the formation of " domain ", make interlayer have rigidity pillared, thereby finally make the layered silicate porous of original adding, increased specific surface area greatly, possessed very strong adsorption, brought up " capacity increases greatly ", making to embed large quantity of moisture, nutrient and adsorb the sand and dust particulate becomes possibility; Rigidity is pillared to be difficult for subsiding and to make it have water conservation, hold and also have slow releasing function fertile the time; Apply sandy land and make the grains of sand of structure identical (2: 1 type structures) repeat above transformation process, play the effect of the optimum reverse of sandy soil structure.Performance in the time of multi-functional grows up with enough water, fertile condition for the initial stage of adaptive plant; Absorption sand and dust particulate has effectively improved the local environment of plant-growth; The optimum reverse of sandy land structure provides reliable assurance for formation and the stabilized growth of plant-growth, vegetation.
With the inventive method with serious pollution industrial residue phosphogypsum has been made ecology synthesis sand control novel material, both safeguarded ecotope, obtained the sand control novel material of excellent property again, its economic benefit and social benefit are very remarkable.The ecology synthesis sand control novel material of preparation is to area more than ten thousand mu, and the above sandy land in three places is administered, and is that short-term effect or long-term effect are all quite satisfactory, has reached the final purpose that the fundamentally containment for the treatment of both principal and secondary aspect of disease is desertified.
Embodiment
Phosphogypsum (80 order) is made 1: 2 slip of solid-to-liquid ratio, add sulfuric acid, the PH of control solution is about 1.5, mixes at 90～95 ℃ and gives processing in 1 hour 20 minutes; Wait to give after the phosphogypsum slurry temperature of handling reduces to below 80 ℃, the adding solid-to-liquid ratio is 1: 2 sodium-based montmorillonite (80 an order) slip, the sodium-based montmorillonite dry weight is 4 times of phosphogypsum dry weight, control PH is about 1.5, stirring reaction 20 minutes, the straw powder (20 order) that adds the matting processing that is equivalent to sodium-based montmorillonite dry weight 50% then, control PH＜3,60～70 ℃ of temperature, stirring reaction 25 minutes adds volatile salt, adjusting PH is 5～6, continue stirring reaction 20 minutes, and added the straw powder (20 order) of the matting processing that is equivalent to layered silicate dry weight 20% once more, keep 60～70 ℃ of temperature, continue stirring reaction discharging in 10 minutes, add low-grade phosphate ore stone flour (80 order) at last to can heaped-up, mixing is piled up slaking 20 days.
Claims (4)
1. phosphogypsum comprehensive utilization method, it is characterized in that may further comprise the steps: (1) makes 1: 2 slip of solid-to-liquid ratio with phosphogypsum (80 order), add mineral acid, the PH of control solution is 1.2～2, mixes at 90～95 ℃ and gives processing in 1～1.5 hour; (2) wait to give after the phosphogypsum slurry temperature of handling reduces to below 80 ℃, the adding solid-to-liquid ratio is 1: 2 layered silicate (80 an order) slip, the layered silicate dry weight is 3～5 times of phosphogypsum dry weight, control PH is 1.2～2, stirring reaction 10～20 minutes, the straw powder (20 order) that adds the matting processing that is equivalent to layered silicate dry weight 40%～60% then, control PH＜3,60～70 ℃ of temperature, stirring reaction 20～30 minutes adds ammonium salt, adjusting PH is 5～6, continue stirring reaction 20 minutes, and added the straw powder (20 order) of the matting processing that is equivalent to layered silicate dry weight 15%～25% once more, keep 60～70 ℃ of temperature, continue stirring reaction discharging in 10 minutes, the straw powder (20 order) that adds low-grade phosphate ore stone flour (80 order) or matting processing at last is to can heaped-up, and mixing is piled up slaking 15～20 days.
2. phosphogypsum comprehensive utilization novel method according to claim 1 is characterized in that described mineral acid is sulfuric acid, phosphoric acid, positive silicic acid wherein one or more mixing acid or the production of phosphate fertilizer mixing acid that early stage, the calcium monofluorophosphate ore pulp produced after acidolysis.
3. phosphogypsum comprehensive utilization novel method according to claim 1 is characterized in that layered silicate is sodium-based montmorillonite or calcium-base montmorillonite.
4. phosphogypsum comprehensive utilization novel method according to claim 1 is characterized in that described ammonium salt is volatile salt or bicarbonate of ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100211802A CN1325438C (en) | 2005-06-28 | 2005-06-28 | Method of comprehensive utilization of phophogypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100211802A CN1325438C (en) | 2005-06-28 | 2005-06-28 | Method of comprehensive utilization of phophogypsum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1724479A true CN1724479A (en) | 2006-01-25 |
| CN1325438C CN1325438C (en) | 2007-07-11 |
Family
ID=35924127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100211802A Expired - Fee Related CN1325438C (en) | 2005-06-28 | 2005-06-28 | Method of comprehensive utilization of phophogypsum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1325438C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180731A (en) * | 2011-02-16 | 2011-09-14 | 成都正光投资集团有限公司 | Polymer emulsion coated slow release fertilizer taking nanomaterial as carrier and preparation method thereof |
| CN102960195A (en) * | 2012-12-07 | 2013-03-13 | 甘肃瓮福化工有限责任公司 | Planting pot with functions of preventing sand, fixing sand, controlling sand and modifying soil and manufacturing method thereof |
| CN104970013A (en) * | 2015-07-30 | 2015-10-14 | 广东省湛江市甘丰农药厂 | Controlled-release pesticide granules and preparation method thereof |
| CN105622286A (en) * | 2014-11-03 | 2016-06-01 | 深圳市芭田生态工程股份有限公司 | Water-retention sand-fixing material and preparation method and application thereof |
| CN108410469A (en) * | 2018-01-22 | 2018-08-17 | 昆明理工大学 | A kind of preparation method and application method of lightweight water-keeping material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130165A (en) * | 1995-01-14 | 1996-09-04 | 魏坤峰 | Improved fertilizer for hortriculture saline-alkali soil and its preparing method |
| CN1242000C (en) * | 2003-11-14 | 2006-02-15 | 华南理工大学 | Organic modified phyllosilicate and method for preparing same |
-
2005
- 2005-06-28 CN CNB2005100211802A patent/CN1325438C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180731A (en) * | 2011-02-16 | 2011-09-14 | 成都正光投资集团有限公司 | Polymer emulsion coated slow release fertilizer taking nanomaterial as carrier and preparation method thereof |
| CN102180731B (en) * | 2011-02-16 | 2013-07-17 | 成都正光投资集团有限公司 | Polymer emulsion coated slow release fertilizer taking nanomaterial as carrier and preparation method thereof |
| CN102960195A (en) * | 2012-12-07 | 2013-03-13 | 甘肃瓮福化工有限责任公司 | Planting pot with functions of preventing sand, fixing sand, controlling sand and modifying soil and manufacturing method thereof |
| CN105622286A (en) * | 2014-11-03 | 2016-06-01 | 深圳市芭田生态工程股份有限公司 | Water-retention sand-fixing material and preparation method and application thereof |
| CN104970013A (en) * | 2015-07-30 | 2015-10-14 | 广东省湛江市甘丰农药厂 | Controlled-release pesticide granules and preparation method thereof |
| CN104970013B (en) * | 2015-07-30 | 2017-08-04 | 广州甘蔗糖业研究所湛江甘蔗研究中心 | A kind of slow controlled release granular pesticide and preparation method thereof |
| CN108410469A (en) * | 2018-01-22 | 2018-08-17 | 昆明理工大学 | A kind of preparation method and application method of lightweight water-keeping material |
| CN108410469B (en) * | 2018-01-22 | 2020-11-17 | 昆明理工大学 | Preparation method and use method of light water-retaining material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1325438C (en) | 2007-07-11 |
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