CN114516623A - Drying-free phosphate rock powder briquetting method - Google Patents
Drying-free phosphate rock powder briquetting method Download PDFInfo
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- CN114516623A CN114516623A CN202210193861.0A CN202210193861A CN114516623A CN 114516623 A CN114516623 A CN 114516623A CN 202210193861 A CN202210193861 A CN 202210193861A CN 114516623 A CN114516623 A CN 114516623A
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- CN
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- Prior art keywords
- phosphate rock
- drying
- powder
- phosphorus
- free phosphate
- 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.)
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- 239000002367 phosphate rock Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000000843 powder Substances 0.000 title claims abstract description 31
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 14
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 14
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 7
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 18
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 17
- 239000011574 phosphorus Substances 0.000 claims description 17
- 229910052698 phosphorus Inorganic materials 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 9
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims description 2
- 239000011343 solid material Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 7
- 238000005469 granulation Methods 0.000 abstract description 4
- 230000003179 granulation Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 229910019142 PO4 Inorganic materials 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 9
- 239000010452 phosphate Substances 0.000 description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 description 6
- 239000003337 fertilizer Substances 0.000 description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical class O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- FYYHWMGAXLPEAU-IGMARMGPSA-N magnesium-24 Chemical group [24Mg] FYYHWMGAXLPEAU-IGMARMGPSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/01—Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/02—Preparation of phosphorus
- C01B25/027—Preparation of phosphorus of yellow phosphorus
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
- C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
-
- 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
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to a drying-free phosphate rock powder briquetting method, which comprises the steps of putting phosphate rock powder, magnesium oxide and magnesium chloride into a mixing device according to a certain proportion, adding a proper amount of water into the mixing device for blending, transferring the blended material into a forming briquetting device, standing for 2-24 h, cutting or extruding into strips before complete curing, and preparing into 10-100 mm blocks. The traditional ground phosphate rock is prepared into particles by a granulation method or an extrusion method and then dried, and unqualified returned materials with a certain proportion need to be treated. The invention has the advantages of simple process, high blocking efficiency, uniform particles, no material return, no drying, low cost, environmental protection and high strength of the prepared product.
Description
Technical Field
The invention relates to the technical field of fertilizer manufacturing, in particular to a method for preparing blocks of powdery phosphate rock for producing calcium magnesium phosphate fertilizer.
Background
After the phosphorus ore is mined and transported, the phosphorus ore is crushed, dried, screened and the like in a factory and then is put into a furnace, the amount of lump ore is only about 50 percent, the phosphorus is generally lost by 15 to 20 percent when the qualified lump ore is purchased for phosphorus production, and the residual phosphorus ore powder screened by yellow phosphorus production enterprises is huge in quantity, so that the phosphorus resource is greatly wasted and seriously lost economically. Some yellow phosphorus production enterprises try to adopt a process of granulating, forming and roasting after adding clay or water glass into phosphate rock powder as a binder so as to achieve the purposes of comprehensively utilizing precious phosphate rock resources and reducing the product cost, but the addition of the binder for granulating, forming and roasting has high energy consumption.
The patent CN104261363B A powdered rock phosphate granulating, forming and roasting method, powdered rock phosphate pretreated by crushing, screening, drying and homogenizing of the powdered rock phosphate is sent to a ball mill for grinding, and then sent to a disc granulator, and added with a binder made of acid sludge which is an intermediate product of wet-process phosphoric acid production by a dihydrate method, so that the powdered rock phosphate is mutually bonded to prepare the powdered rock phosphate with the granularity of 20-30 mm, and the tail gas of a phosphorus furnace is introduced into a grate type roasting machine for roasting at 850-950 ℃, and then cooled by air cooling, thus preparing the powdered rock phosphate pellet for yellow phosphorus production. This patent is broken with the phosphorite, sieves, dries, still will get into the ball-milling, and disc granulation again, complex operation, stoving and calcination energy consumption are high.
Patent CN108249411B discloses a preparation method of ground or crushed phosphorite binder and a molded ore production method, which uses industrial by-products mainly containing silica as raw materials, and adds caustic soda and catalyst to prepare ground or crushed phosphorite binder; pelletizing and calcining the binder and the ground phosphate rock or crushed phosphate rock to obtain the electric furnace yellow phosphorus production raw material, namely the formed ore.
The patent CN96103837.3 discloses a method for bonding broken phosphate rock into lumps, which is to add phosphoric acid as a binder into broken phosphate rock with the granularity less than 8mm, uniformly stir the mixture, wherein the adding amount of the phosphoric acid is calculated by phosphorus pentoxide, 0.5-2 parts of phosphorus pentoxide are added into every 100 parts of the broken phosphate rock, then the mixture is pressed and formed by a forming machine to prepare green pellets, and the green pellets are dried at the temperature of 200-800 ℃ until the moisture content is less than or equal to 1% or naturally air-dried. The above method still requires the addition of a binder and drying or air-drying.
The invention discloses a method for forming broken phosphorite, and relates to a method for forming and curing broken phosphorite, belonging to the technical field of comprehensive utilization of mineral resources. Adding 2-4% of activated kaolin, 4-5% of water glass and 10-12% of process water into the crushed phosphorite by mass of a dry basis of the crushed phosphorite, stirring, mixing, homogenizing, forming, standing and maintaining to obtain a finished product. However, the activated kaolin needs to be activated for 40-60 min at the temperature of 600-700 ℃, and the preparation energy consumption of the activated kaolin is high, so that the problem of dust is involved.
In summary, various types of binders and preparation type ore methods are developed around the forming technology of crushed phosphate ore or phosphate ore powder, and have various characteristics and advantages, but the phosphate ore powder, the mixture of magnesium oxide and magnesium chloride are placed in a mixing device according to a certain proportion, then a proper amount of water is added into the mixing device for mixing, the mixed material is transferred into a molding block forming device, is kept stand, cut into blocks or extruded into strips to prepare blocky phosphate ore, the crushed phosphoric acid or the phosphate ore powder is not subjected to any treatment, only the mixture of magnesium oxide and magnesium chloride is added, the blocky phosphate ore is molded, cut into blocks without drying, and is directly used for producing calcium magnesium phosphate fertilizer, and no report is found in the prefabricated blocks of the raw materials for producing the calcium magnesium phosphate fertilizer.
Disclosure of Invention
Aiming at the problems and the defects of the prior art, the invention provides a drying-free phosphate rock powder briquetting method. The invention has the advantages of simple process, high blocking efficiency, uniform particles, no material return, no drying, low cost, environmental protection and high strength of the prepared product.
The invention is realized by the following technical scheme.
The drying-free phosphate rock powder briquetting method is characterized by comprising the following steps:
(1) putting phosphate rock powder, magnesium oxide and magnesium chloride into mixing equipment according to a certain proportion;
(2) adding a proper amount of water into the mixing equipment, and blending;
(3) and (3) transferring the blended materials into forming and blocking equipment for forming, standing for 2-24 hours, and cutting into blocks or extruding into strips before complete curing to prepare blocks of 10-100 mm.
The phosphorus mineral powder in the step (1) is one or more of phosphorus limestone ore powder, phosphorus rock ore powder, phosphorus limestone ore powder and phosphorus ore tailing powder.
In the step (1), the mixture of magnesium oxide and magnesium chloride accounts for 3-30% of the total mass of the ingredients.
In the step (1), the mixture of magnesium oxide and magnesium chloride contains 20-80 parts by weight of magnesium oxide and 20-80 parts by weight of magnesium chloride.
The water added in the step (2) accounts for 5-30% of the mass fraction of the solid material.
The strength of the massive phosphorite particles prepared in the step (3) is more than or equal to 100N.
The beneficial effects of the invention are: compared with the existing traditional method for preparing the granules from the powdered rock phosphate, the method does not use the granulation of a granulation method, does not use high-temperature sintering, does not use drying, has low energy consumption, does not use returning charge, has simple process, high agglomeration efficiency, uniform granules, low cost, environmental protection and high strength of the prepared product.
In a word, the invention combines the actual conditions that the grade of phosphorite in China is reduced, the washing tailings of the phosphorite are increased year by year, and part of enterprises producing yellow phosphorus by an electric furnace method are inconvenient to utilize broken phosphorite or have low utilization value, and the method for preparing the block-shaped phosphate rock powder without drying is used for preparing the calcium-magnesium phosphate fertilizer as the block-shaped phosphate rock and is used for producing the yellow phosphorus by the electric furnace method, thereby opening up a new technical route for recycling the ground phosphorite and the broken phosphorite.
Detailed Description
The invention is further described in connection with the examples, which are obtained as raw materials.
Example 1
A drying-free phosphate rock powder briquetting method comprises the following specific steps:
(1) according to the mass parts, 97 parts of apatite powder, 2.4 parts of magnesium oxide and 0.6 part of magnesium chloride are mixed in a mixing device;
(2) adding 5 parts of water into mixing equipment, and blending;
(3) Transferring the blended material into a briquetting device, standing for 2h, and cutting into blocks to prepare 10-100 mm blocky phosphate ores;
the strength of the prepared massive phosphorite reaches 120N.
Example 2
A drying-free phosphate rock powder briquetting method comprises the following specific steps:
(1) according to the mass parts, 70 parts of phosphorite tailings, 6 parts of magnesium oxide and 24 parts of magnesium chloride mixture are placed in a mixing device;
(2) adding 30 parts of water into mixing equipment, and blending;
(3) transferring the blended material into extrusion stripping equipment, standing for 24 hours, and extruding into strips to prepare 10-100 mm blocky phosphate ores;
the strength of the prepared massive phosphate rock particles reaches 280N.
Example 3
A drying-free phosphate rock powder briquetting method comprises the following specific steps:
(1) according to the mass parts, 40 parts of phosphorite ore powder, 40 parts of phosphorite tailings, 8 parts of magnesium oxide and 12 parts of magnesium chloride are mixed in mixing equipment;
(2) adding 20 parts of water into mixing equipment, and blending;
(3) transferring the blended material into extrusion stripping equipment, standing for 10 hours, and extruding into strips to prepare 10-100 mm blocky phosphate ores;
the strength of the prepared massive phosphate rock particles reaches 200N.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The drying-free phosphate rock powder briquetting method is characterized by comprising the following steps:
(1) putting phosphate rock powder, magnesium oxide and magnesium chloride into mixing equipment according to a certain proportion;
(2) adding a proper amount of water into the mixing equipment, and blending;
(3) and (3) transferring the blended materials into forming and blocking equipment for forming, standing for 2-24 hours, and cutting into blocks or extruding into strips before complete curing to prepare blocks of 10-100 mm.
2. The drying-free phosphate rock briquetting method of claim 1, characterized in that: the phosphorus mineral powder in the step (1) is one or more of phosphorus limestone ore powder, phosphorus rock ore powder, phosphorus limestone ore powder and phosphorus ore tailing powder.
3. The drying-free phosphate rock briquetting method of claim 1, characterized in that: in the step (1), the mixture of magnesium oxide and magnesium chloride accounts for 3-30% of the total mass of the ingredients.
4. The drying-free phosphate rock briquetting method of claim 3, characterized in that: in the step (1), the mixture of magnesium oxide and magnesium chloride contains 20-80 parts by weight of magnesium oxide and 20-80 parts by weight of magnesium chloride.
5. The drying-free phosphate rock briquetting method of claim 1, characterized in that: and (3) the water added in the step (2) accounts for 5-30% of the mass fraction of the solid material.
6. The drying-free phosphate rock powder briquetting method according to claim 1, characterized in that: the strength of the massive phosphorite particles prepared in the step (3) is more than or equal to 100N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210193861.0A CN114516623A (en) | 2022-03-01 | 2022-03-01 | Drying-free phosphate rock powder briquetting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210193861.0A CN114516623A (en) | 2022-03-01 | 2022-03-01 | Drying-free phosphate rock powder briquetting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114516623A true CN114516623A (en) | 2022-05-20 |
Family
ID=81598708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210193861.0A Withdrawn CN114516623A (en) | 2022-03-01 | 2022-03-01 | Drying-free phosphate rock powder briquetting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114516623A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071404A (en) * | 1991-10-12 | 1993-04-28 | 齐福民 | Waterproof mortar and preparation method thereof |
| CN1080628A (en) * | 1992-06-25 | 1994-01-12 | 武汉无机盐化工厂 | High-density phosphorus content fertilizer producing process by solidifying phosphoric acid material pulp |
| CN1261124A (en) * | 2000-02-23 | 2000-07-26 | 陈炜 | Method for producing covering layer of roof |
| CN102826824A (en) * | 2012-04-23 | 2012-12-19 | 杜昌君 | Sound-proof, heat-insulated and flame-retardant lightweight aggregate magnesite coagulating composite material and composite plate thereof |
-
2022
- 2022-03-01 CN CN202210193861.0A patent/CN114516623A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071404A (en) * | 1991-10-12 | 1993-04-28 | 齐福民 | Waterproof mortar and preparation method thereof |
| CN1080628A (en) * | 1992-06-25 | 1994-01-12 | 武汉无机盐化工厂 | High-density phosphorus content fertilizer producing process by solidifying phosphoric acid material pulp |
| CN1261124A (en) * | 2000-02-23 | 2000-07-26 | 陈炜 | Method for producing covering layer of roof |
| CN102826824A (en) * | 2012-04-23 | 2012-12-19 | 杜昌君 | Sound-proof, heat-insulated and flame-retardant lightweight aggregate magnesite coagulating composite material and composite plate thereof |
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Application publication date: 20220520 |