CN115215678B - Organic residue clay light ceramsite of phosphogypsum product and preparation method thereof - Google Patents
Organic residue clay light ceramsite of phosphogypsum product and preparation method thereof Download PDFInfo
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- CN115215678B CN115215678B CN202210543430.2A CN202210543430A CN115215678B CN 115215678 B CN115215678 B CN 115215678B CN 202210543430 A CN202210543430 A CN 202210543430A CN 115215678 B CN115215678 B CN 115215678B
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- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 title claims abstract description 75
- 239000004927 clay Substances 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000002893 slag Substances 0.000 claims abstract description 45
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 30
- 239000010881 fly ash Substances 0.000 claims abstract description 16
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 239000008187 granular material Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000003245 coal Substances 0.000 claims abstract description 9
- 238000007667 floating Methods 0.000 claims abstract description 6
- 238000005188 flotation Methods 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000010304 firing Methods 0.000 claims description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 9
- XLLIQLLCWZCATF-UHFFFAOYSA-N 2-methoxyethyl acetate Chemical compound COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 claims description 8
- LGDSHSYDSCRFAB-UHFFFAOYSA-N Methyl isothiocyanate Chemical compound CN=C=S LGDSHSYDSCRFAB-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000000395 magnesium oxide Substances 0.000 claims description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 7
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- WEBRDDDJKLAXTO-UHFFFAOYSA-N 2-ethyl-1,3-dioxolane Chemical compound CCC1OCCO1 WEBRDDDJKLAXTO-UHFFFAOYSA-N 0.000 claims description 4
- CQRFEDVNTJTKFU-UHFFFAOYSA-N 3-methoxypentane Chemical compound CCC(CC)OC CQRFEDVNTJTKFU-UHFFFAOYSA-N 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims 3
- 239000000292 calcium oxide Substances 0.000 claims 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 3
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims 3
- 229910001950 potassium oxide Inorganic materials 0.000 claims 3
- 239000000047 product Substances 0.000 description 38
- 238000010438 heat treatment Methods 0.000 description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- -1 adding gangue Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
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- C04B38/0645—Burnable, meltable, sublimable materials
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- 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
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- 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
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
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- 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
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- 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
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Abstract
The invention relates to phosphogypsum ceramsite technical field, especially a kind of organic residue clay light ceramsite of phosphogypsum product and its preparation method, grind the organic residue of phosphogypsum product, clay of flotation, design with the reasonable proportion of coal gangue, fly ash, calcium carbonate, mix each raw materials, granulate, fire, prepare ceramsite, make density of ceramsite 350-450 kg/m 3 The strength is 4-7MPa, so that the quality of the ceramsite is effectively improved, organic slag of a floating phosphogypsum product is utilized, and secondary pollution is avoided.
Description
Technical Field
The invention relates to the technical field of phosphogypsum ceramsite, in particular to an organic residue clay light ceramsite of a flotation phosphogypsum product and a preparation method thereof.
Background
Phosphogypsum is a solid waste which is a byproduct of the wet processing of phosphorite resources, and about 5-8 tons of phosphogypsum is produced by producing 1 ton of phosphoric acid. China is a country with large phosphorus resource reserves and a country with large demands, the accumulated accumulation of phosphogypsum is 2.5 hundred million tons, the newly added phosphogypsum is 8000 ten thousand tons/year, and the utilization rate is about 33 percent. Phosphogypsum is piled up and occupies a large amount of land, and the phosphogypsum, fluorine, silicon slag, organic slag and heavy metal are polluted by water quality due to flushing of rainwater, so that the phosphogypsum becomes a technical bottleneck for restricting development of phosphorus resource processing enterprises, and therefore, phosphogypsum is effectively treated and is unprecedented.
In the prior art, most of phosphogypsum is directly added into other raw material components for treatment, and the phosphogypsum is sintered into ceramsite, so that the utilization rate of the phosphogypsum is low, the quality of the prepared ceramsite is poor, and the density of a ceramsite product is extremely high and reaches 500kg/m 3 The strength of the obtained ceramsite is low and is about 0.5MPa, so that the application range of the prepared ceramsite product is limited. The ceramsite is synthesized by using coal slime, phosphogypsum and metallurgical waste residue as the patent number 201010249969.4, and the three raw materials are mixed, granulated, fired and naturally cooled to ensure that the water absorption rate of the ceramsite is lower than 15 percent and the bulk density is lower than or equal to 500kg/m 3 The cylinder pressure intensity is more than 0.3MPa.
In addition, phosphogypsum itself contains harmful impurities, and the phosphogypsum is a method for floating the harmful impurities in the phosphogypsum: the primary gypsum is obtained by removing phosphorus, fluorine, silicon slag, organic slag and heavy metal, and can be widely applied to the fields of mortar, self-leveling, building blocks, partition boards and the like. However, the organic slag of the phosphogypsum product is not developed and utilized by mature technology at present, most of the organic slag is buried as waste, and secondary pollution is easily caused.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides the lightweight ceramsite prepared by reasonably proportioning the organic slag of the phosphogypsum product, the gangue, the fly ash and the calcium carbonate, and the lightweight ceramsite prepared by the organic slag clay of the phosphogypsum product and the preparation method thereof, which are realized by the following technical scheme:
the organic residue clay light ceramsite of the phosphogypsum product is prepared from the following raw materials in parts by weight: 10-20 parts of organic slag of a flotation phosphogypsum product, 55-75 parts of clay, 10-15 parts of coal gangue, 5-10 parts of fly ash and 5-10 parts of calcium carbonate.
Further, the organic slag of the phosphogypsum product comprises the following components in percentage by content: 50-70% of calcium sulfate dihydrate, 20-40% of organic matters (2-ethyl-1, 3-dioxolane, isothiocyanato methane, 3-methoxy-n-pentane and ethylene glycol methyl ether acetate), 1-2% of silicon dioxide, 1-2% of ferric oxide and 1-2% of magnesium oxide.
Further, the organic slag of the phosphogypsum product comprises the following components in percentage by content: 60% of calcium sulfate dihydrate, 35% of organic matters (2-ethyl-1, 3-dioxolane, isothiocyanato methane, 3-methoxy-n-pentane and ethylene glycol methyl ether acetate), 1% of silicon dioxide, 2% of ferric oxide and 2% of magnesium oxide.
Further, the method for preparing the organic residue clay light ceramsite of the phosphogypsum product comprises the following steps:
a. drying, grinding and sieving organic slag and clay of a floating phosphogypsum product, adding gangue, fly ash, calcium carbonate powder and water, and uniformly stirring to obtain a mixture;
b. and c, granulating the mixture in the step a in a granulator, and firing and cooling the granules in a muffle furnace or a roasting furnace to obtain the floating phosphogypsum product, namely the organic slag clay light ceramsite.
Further, in the step a, organic slag and clay of the phosphogypsum product are subjected to drying and grinding, and are sieved by a 80-mesh sieve, wherein the mass ratio of water to other materials is 0.1-0.9:1.
Further, the diameter of the particles in the step b is 5-25mm, the sintering process is to preheat the particles to 60-150 ℃ for 30min, then heat the particles to 550-600 ℃ for 20min, then heat the particles to 1800-1200 ℃ for 10min, heat the particles to 20min, and finally cool the particles to 300 ℃ for 1 h.
Compared with the prior art, the invention has the technical effects that:
grinding organic slag and clay of phosphogypsum products, reasonably proportioning and designing the organic slag and clay with coal gangue, fly ash and calcium carbonate, mixing the raw materials, granulating and firing the mixture to prepare ceramsite, so that the density of the ceramsite is 350-450 kg/m < 3 >, the strength is 4-7Mpa, and the quality of the ceramsite is effectively improved; the organic slag of the phosphogypsum product is rich in organic matters, a heat source is provided in the calcining process, the organic matters are small in particles, and the micropores in the calcined ceramsite are uniformly distributed, so that the quality of the ceramsite is improved; the utilization of organic slag of the phosphogypsum product avoids secondary pollution and effectively improves the utilization rate of phosphogypsum.
Detailed Description
The present invention is described in further detail below in conjunction with the embodiments to enable one skilled in the art to practice the same by referring to the description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. Based on this embodiment of the present invention, all other embodiments that a person of ordinary skill in the art could achieve without inventive effort are within the scope of the present invention.
Example 1
The light ceramsite is prepared from the following raw materials in parts by weight, 15Kg of organic slag, 65Kg of clay, 10Kg of coal gangue, 5Kg of fly ash and 5Kg of calcium carbonate of the phosphogypsum product. Wherein phosphogypsum product organic slag and clay are ground.
The preparation method of the organic residue clay light ceramsite of the phosphogypsum product comprises the following steps:
(1) And (3) drying and grinding organic slag and clay of the phosphogypsum product, sieving the organic slag and clay with a 80-mesh sieve, adding gangue, fly ash and calcium carbonate powder, uniformly stirring, adding water according to the mass ratio of water to material of 1:0.3, and uniformly stirring to obtain a mixture.
(2) And (3) granulating the mixture obtained in the step (1) in a granulator, enabling the diameter of the granules to be 15mm, and placing the granules in a muffle furnace or a roasting furnace for firing and cooling to obtain the organic slag clay light ceramsite of the phosphogypsum product.
Preferably, the firing is performed by preheating the particles to 80 ℃, preheating for 30min, heating to 550 ℃ in 20min, keeping the temperature for 20min, heating to 1200 ℃ in 10min, keeping the temperature for 20min, cooling to 300 ℃ in 1h, and cooling to normal temperature.
The obtained ceramsite has a bulk density of 426kg/m3 and a cylinder pressure strength of 6.2MPa.
Example 2
The light ceramsite is prepared from the following raw materials in parts by weight, namely 15Kg of organic slag, 60Kg of clay, 15Kg of coal gangue, 5Kg of fly ash and 5Kg of calcium carbonate of the phosphogypsum product. Wherein phosphogypsum product organic slag and clay are ground.
The preparation method of the organic residue clay light ceramsite of the phosphogypsum product comprises the following steps:
(1) And (3) drying and grinding organic slag and clay of the phosphogypsum product, sieving the organic slag and clay with a 80-mesh sieve, adding gangue, fly ash and calcium carbonate powder, uniformly stirring, adding water according to the mass ratio of water to material of 1:0.2, and uniformly stirring to obtain a mixture.
(2) And (3) granulating the mixture obtained in the step (1) in a granulator, enabling the diameter of the granules to be 20mm, and placing the granules in a muffle furnace or a roasting furnace for firing and cooling to obtain the organic slag clay light ceramsite of the phosphogypsum product.
Preferably, the firing is performed by preheating the particles to 100 ℃, preheating for 30min, heating to 600 ℃ in 20min, keeping the temperature for 20min, heating to 1200 ℃ in 10min, keeping the temperature for 20min, cooling to 300 ℃ in 1h, and cooling to normal temperature.
The obtained ceramsite has a bulk density of 412kg/m 3 The barrel pressure strength was 5.8MPa.
Example 3
The light ceramsite is prepared from the following raw materials in parts by weight, 20Kg of organic slag, 55Kg of clay, 15Kg of coal gangue, 5Kg of fly ash and 5Kg of calcium carbonate of the phosphogypsum product. Wherein phosphogypsum product organic slag and clay are ground.
The preparation method of the organic residue clay light ceramsite of the phosphogypsum product comprises the following steps:
(1) And (3) drying and grinding organic slag and clay of the phosphogypsum product, sieving the organic slag and clay with a 80-mesh sieve, adding gangue, fly ash and calcium carbonate powder, uniformly stirring, adding water according to the mass ratio of water to material of 1:0.15, and uniformly stirring to obtain a mixture.
(2) And (3) granulating the mixture obtained in the step (1) in a granulator, enabling the diameter of the granules to be 20mm, and placing the granules in a muffle furnace or a roasting furnace for firing and cooling to obtain the organic slag clay light ceramsite of the phosphogypsum product.
Preferably, the firing is performed by preheating the particles to 150 ℃, preheating for 30min, heating to 600 ℃ in 20min, keeping the temperature for 20min, heating to 1200 ℃ in 10min, keeping the temperature for 20min, cooling to 300 ℃ in 1h, and cooling to normal temperature.
The obtained ceramsite has a bulk density of 396kg/m 3 The barrel pressure strength was 5.6MPa.
Example 4
The light ceramsite is prepared from the following raw materials in parts by weight, namely 15Kg of organic slag, 55Kg of clay, 15Kg of coal gangue, 5Kg of fly ash and 10Kg of calcium carbonate of the phosphogypsum product. Wherein phosphogypsum product organic slag and clay are ground.
The preparation method of the organic residue clay light ceramsite of the phosphogypsum product comprises the following steps:
(1) And (3) drying and grinding organic slag and clay of the phosphogypsum product, sieving the organic slag and clay with a 80-mesh sieve, adding gangue, fly ash and calcium carbonate powder, uniformly stirring, adding water according to the mass ratio of water to material of 1:0.15, and uniformly stirring to obtain a mixture.
(2) And (3) granulating the mixture obtained in the step (1) in a granulator, enabling the diameter of the granules to be 20mm, and placing the granules in a muffle furnace or a roasting furnace for firing and cooling to obtain the organic slag clay light ceramsite of the phosphogypsum product.
Preferably, the firing is performed by preheating the particles to 100 ℃, preheating for 30min, heating to 550 ℃ in 20min, keeping the temperature for 20min, heating to 1200 ℃ in 10min, keeping the temperature for 20min, cooling to 300 ℃ in 1h, and cooling to normal temperature.
The obtained ceramsite has a bulk density of 378kg/m 3 The barrel pressure strength was 5.1MPa.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The organic residue clay light ceramsite of the phosphogypsum product is characterized by comprising the following raw materials in parts by weight: 10-20 parts of organic slag of a flotation phosphogypsum product, 55-75 parts of clay, 10-15 parts of coal gangue, 5-10 parts of fly ash and 5-10 parts of calcium carbonate.
2. The lightweight phosphogypsum product organic residue clay ceramsite according to claim 1, wherein the phosphogypsum product organic residue comprises the following components in percentage by content: 50-70% of calcium sulfate dihydrate, 20-40% of organic matter, 1-2% of silicon dioxide, 1-2% of ferric oxide and 1-2% of magnesium oxide;
the organic matter is as follows: 2-ethyl-1, 3-dioxolane, isothiocyanato methane, 3-methoxy-n-pentane, ethylene glycol methyl ether acetate.
3. The lightweight phosphogypsum product organic residue clay ceramsite according to claim 2, wherein the phosphogypsum product organic residue comprises the following components in percentage by content: 60% of calcium sulfate dihydrate, 35% of organic matter, 1% of silicon dioxide, 2% of ferric oxide and 2% of magnesium oxide;
the organic matter is as follows: 2-ethyl-1, 3-dioxolane, isothiocyanato methane, 3-methoxy-n-pentane, ethylene glycol methyl ether acetate.
4. The phosphogypsum product organic slag clay lightweight ceramsite according to claim 1, wherein the clay comprises in percentage: 50-67% of silicon dioxide, 17-25% of aluminum oxide, 2-10% of ferric oxide, 1-4% of ferric oxide, 1-8% of calcium oxide, 1-4% of magnesium oxide and 1-3% of potassium oxide.
5. The organic residue clay lightweight ceramsite of a phosphogypsum product according to claim 1, wherein the gangue comprises in percent: 52-65% of silicon dioxide, 16-36% of aluminum oxide, 2-15% of ferric oxide, 1-3% of ferric oxide, 1-5% of calcium oxide, 1-3% of magnesium oxide and 1-3% of potassium oxide.
6. The organic residue clay lightweight ceramsite of a phosphogypsum product according to claim 1, wherein the fly ash comprises in percentage: 55-65% of silicon dioxide, 25-36% of aluminum oxide, 3-15% of ferric oxide, 1-4% of ferric oxide, 1-5% of calcium oxide, 1-3% of magnesium oxide and 1-3% of potassium oxide.
7. A method for preparing the organic residue clay light ceramsite of the phosphogypsum product according to claim 1, which is characterized in that,
the method comprises the following steps:
a. drying, grinding and sieving organic slag and clay of a floating phosphogypsum product, adding gangue, fly ash, calcium carbonate powder and water, and uniformly stirring to obtain a mixture;
b. and c, granulating the mixture in the step a in a granulator, and firing and cooling the granules in a muffle furnace or a roasting furnace to obtain the floating phosphogypsum product, namely the organic slag clay light ceramsite.
8. The method of manufacturing according to claim 7, wherein: and c, drying and grinding organic slag and clay of the phosphogypsum product in the step a, and sieving the organic slag and clay by a 80-mesh sieve, wherein the mass ratio of water to other materials is 0.1-0.9:1.
9. The method of manufacturing according to claim 7, wherein: the diameter of the particles in the step b is 5-25mm, the sintering process is to preheat the particles to 60-150 ℃ for 30min, then heat the particles to 550-600 ℃ for 20min, keep the temperature for 20min, then heat the particles to 1800-1200 ℃ for 10min, keep the temperature for 20min, and finally cool the particles to 300 ℃ for 1 h.
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