CN104130073A - Production method of phosphogypsum compressed nutrient soil - Google Patents
Production method of phosphogypsum compressed nutrient soil Download PDFInfo
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- CN104130073A CN104130073A CN201410394416.6A CN201410394416A CN104130073A CN 104130073 A CN104130073 A CN 104130073A CN 201410394416 A CN201410394416 A CN 201410394416A CN 104130073 A CN104130073 A CN 104130073A
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- phosphogypsum
- batching
- attapulgite clay
- nutrition soil
- mud
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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 140
- 239000002689 soil Substances 0.000 title claims abstract description 91
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 235000015097 nutrients Nutrition 0.000 title abstract description 9
- 229960000892 attapulgite Drugs 0.000 claims abstract description 82
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 82
- 238000007906 compression Methods 0.000 claims abstract description 52
- 230000006835 compression Effects 0.000 claims abstract description 52
- 238000003756 stirring Methods 0.000 claims abstract description 26
- 230000001954 sterilising effect Effects 0.000 claims abstract description 22
- 239000003415 peat Substances 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 10
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 9
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 9
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 9
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000010802 sludge Substances 0.000 claims abstract description 9
- 239000010455 vermiculite Substances 0.000 claims abstract description 9
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 9
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 9
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 7
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 5
- 235000016709 nutrition Nutrition 0.000 claims description 72
- 230000035764 nutrition Effects 0.000 claims description 72
- 239000004927 clay Substances 0.000 claims description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
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- 239000000203 mixture Substances 0.000 claims description 13
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
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- 238000012545 processing Methods 0.000 claims description 7
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- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 4
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- 238000012986 modification Methods 0.000 claims description 3
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- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
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- 238000012360 testing method Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 10
- 230000012010 growth Effects 0.000 abstract description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 239000011574 phosphorus Substances 0.000 abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002250 absorbent Substances 0.000 abstract description 4
- 239000004615 ingredient Substances 0.000 abstract description 4
- 239000011591 potassium Substances 0.000 abstract description 4
- 229910052700 potassium Inorganic materials 0.000 abstract description 4
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- 230000000050 nutritive effect Effects 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
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- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- 206010022971 Iron Deficiencies Diseases 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical group [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 230000003612 virological effect Effects 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 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 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241000195940 Bryophyta Species 0.000 description 1
- 241000244203 Caenorhabditis elegans Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 241000244206 Nematoda Species 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 241000282941 Rangifer tarandus Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- WZLMXYBCAZZIRQ-UHFFFAOYSA-N [N].[P].[K] Chemical compound [N].[P].[K] WZLMXYBCAZZIRQ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
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- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
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- 244000037666 field crops Species 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
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Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Cultivation Of Plants (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a production method of phosphogypsum compressed nutrient soil. The key point of the technical scheme is as follows: the production method comprises the following steps: firstly, acidifying and naturally fermenting sludge; then, packaging into a finished product after carrying out stirring, compression and microwave low-temperature sterilization on ingredients of the phosphogypsum compressed nutrient soil. The phosphogypsum compressed nutrient soil is prepared from the following raw materials such as dehydrated phosphogypsum, acidified sludge, instant sodium silicate, polyvinyl alcohol, ferrous sulfate, peat, flower ceramsite, hyperviscous attapulgite, biogas slurry, biogas residues, smashed plant fibers, expanded vermiculite, expanded perlite and super absorbent resin. The phosphogypsum compressed nutrient soil contains a plenty of nitrogen, phosphorus, potassium, organic matters and various microelements and can provide nutrient elements required by plant growth to reduce the damage on the plants caused by pathogenic bacteria and injurious insects, thereby facilitating normal growth and development of the plants and protecting the ecological environment. The production method of the phosphogypsum compressed nutrient soil is suitable for producing phosphogypsum compressed nutrient soil with different formulae.
Description
Technical field
The present invention relates to Nutrition Soil, be specifically related to a kind of production method of phosphogypsum compression Nutrition Soil.
Background technology
Phosphogypsum is the solid slag of the generation of sulfuric acid process phosphoric acid extraction production process, its main component is calcium sulfate, phosphogypsum is moist fine powder, 95% particle is less than 0.2 millimeter, free water content 20~30%, and a small amount of detrimental impurity such as phosphorous, fluorine, organism and silicon-dioxide, it is acid that phosphogypsum is, and pH value is generally below 4.5.
1 ton of phosphoric acid of every production is by the phosphogypsum that produces 4.5~5.5 tons, a large amount of discharges of phosphogypsum not only take a large amount of soils, also because phosphogypsum is through rainwater long period of soaking, titanium pigment and fluorine etc. wherein causes the pollution of soil, water system, atmosphere to environment transmission taking water body as medium, what be therefore necessary to seek phosphogypsum rationally utilizes approach, to realize the Sustainable development of Phosphate Fertilizer Industry and the height utilization of phosphogypsum.
Mud is the smelly paste of a kind of easy corruption producing in sewage treatment process, its enrichment the pollutent in sewage, contain the hazardous and noxious substances such as the nutritive substances such as a large amount of nitrogen, phosphorus and organism, viral micro-organisms, parasitic ovum, heavy metal, without effectively processing and dispose, will environment be produced to serious harm.
Sludge moisture content >=80% that municipal sewage plant produces, mud is alkalescence mostly, and pH value is 8~10, the product of unsuitable direct production recycling.
Investigation shows, at present China has 80% mud not to be effectively addressed, and even has greatly and is simply discarded in the PE such as farmland, river, becomes new source of pollution.
At present a large amount of not mud of stabilizing treatment has become the heavy burden of sewage work, how mud huge output, complicated component is properly processed safely, makes that it is innoxious, minimizing, resource utilization, has become dark concerned key subjects.
Nutrition Soil is the multiple mineral nutrition that contains of preparing specially in order to meet seedling growth growth, loose ventilation, and preserve moisture and fertility ability is strong, without the soil of disease and pest.Generally formed with decomposed dung mixed preparing by fertile land for growing field crops soil, also be selected from import high-quality peat, coconut palm chaff, the Nutrition Soil mixing in specific proportions, but these Nutrition Soils are not through reasonably preparing burden and strict sterilization, are unfavorable for that the normal growth of nursery stock is grown.
Because Nutrition Soil is after treatment low weight and loose, the conventional products volume of Nutrition Soil is relatively large, is unfavorable for reducing the cost of producing and transporting.
Summary of the invention
The object of the invention is to overcome weak point in prior art, a kind of production method of phosphogypsum compression Nutrition Soil is provided.
The production method of phosphogypsum compression Nutrition Soil: first mud is carried out to acidification and spontaneous fermentation, then the batching that phosphogypsum compresses Nutrition Soil is stirred, is packaged as finished product after compression, microwave temperature sterilization.
The materials such as mud, quick dissolved sodium silicate, polyvinyl alcohol, ferrous sulfate, peat, flower ceramsite, high sticky attapulgite clay, natural pond liquid, the natural pond slag of phosphogypsum compression Nutrition Soil after by phosphogypsum, acidifying after dewatering, vegetable fibre, expanded vermiculite, pearlstone and High hydrophilous resin after pulverizing form.
Adopt high-temperature flue gas that phosphogypsum is dehydrated into semi-hydrated gypsum, to strengthen the pectisation of phosphogypsum, phosphogypsum, after processed, can improve the utilization ratio of phosphogypsum, turns waste into wealth.
Attapulgite has unique dispersion, high temperature resistant, the anti-good colloidal property such as saline and alkaline and higher adsorptive power, and has certain plasticity-and cohesive force.Concavo-convex excellent stone clay after the acidify can adsorb foreign odor taste, heavy metal ion and the carcinogenic substance in mud, keep the nutritive ingredient in mud not run off, be conducive to growing of plant, the present invention selects the attapulgite clay after pulverizing, particle fineness≤5 millimeter of attapulgite clay, water content≤15% of attapulgite clay.
Quick dissolved sodium silicate is white pulverulent material, can be dissolved in fast water, has that cohesive force is strong, intensity is higher, acid resistance, good heat resistance, the feature of alkali resistance and poor water resistance.
Polyethenol series white solid, that external form is divided is cotton-shaped, particulate state, Powdered three kinds; Nonpoisonous and tasteless, particulate state can be dissolved in 80--90 DEG C of water, pulverously after other powders pre-dispersed, can dissolve at normal temperatures.There is good viscosity, polymerizability, cohesiveness and water-retentivity.
Vltra tears has thickening capabilities, salt discharge, pH stability, water-retentivity, dimensional stability, good film-forming properties and the feature such as resistance to enzyme, dispersiveness and cohesiveness widely.
Anhydrous slufuric acid ferrous iron is white powder, ferrous sulfate containing crystal water is light green crystal, the ferrous sulfate of 10% aqueous solution is acid to reindeer moss, pH value is about 3.7, in the present invention not only can in and the alkalescence of phosphogypsum compression Nutrition Soil, as the supplement of plant ferro element, there is physiological disturbance because of iron deficiency in control plant, make leaf look chlorosis, can also be used to kill liver moss.
Sodium carbonate has the general character and the thermostability of salt, soluble in water, and its aqueous solution is alkalescence, in the present invention for adjusting the phosphogypsum pH value after dehydration.
Magnesium oxide has the general character of basic oxide, belongs to gelling material, can improve the colloidal property of the phosphogypsum after dehydration.
For the significant challenge of reply water resource environment, China will continue to strengthen the investment of urban infrastructure.The energy-conserving and environment-protective requirement day by day improving along with government, the continuation of municipal public use are open, the propelling of Environmental Industry policy and being gradually improved of investment and financing environment, and wastewater treatment in China and regeneration cause will welcome Historic Opportunities for th e Development.
In the mud of city domestic sewage treatment plant, contain a considerable amount of nitrogen, phosphorus, potassium and trace element, through suitable art breading, as cultivation medium soil, soil improvement material, also can be used as the raw material of making fertilizer, the present invention selects the mud of city domestic sewage treatment plant discharge, water content≤90% of mud.
High sticky attapulgite clay is the attapulgite clay that adopts the complete processing that improves viscosity of attapulgite clay to produce, attapulgite clay is after batching stirs, in input grinding machine, carry out abrasive dust for high sticky attapulgite clay powder, particle fineness≤0.074 millimeter.
High sticky attapulgite clay soil property exquisiteness, has oily soapy, and light weight, property are crisp, fracture is conchoidal or irregular shape, and water-absorbent is strong, tool viscosity and plasticity-when wet, viscosity >=the 2200mPas of high sticky attapulgite clay powder, sticking power is good, is conducive to the bonding between raw material.
Peat is called again the peat composed of rotten mosses or peat soil, and peat venting capability is good, light weight, water holding, fertilizer conservation, is conducive to microbial activities, strengthen biological property, nutritious, be cultivation matrix, it is again good soil mediator agent, and contain very high organic matter, and humic acid and nutrition, the peat after pulverizing is to pulverize after peat is dried, peat particle fineness≤2 millimeter after pulverizing, water content≤15% of peat.
Gravel attapulgite flower ceramsite surface irregularity porous, it is a kind of lightweight, intensity is large, water-intake rate is high flower ceramsite, gravel attapulgite flower ceramsite can be immersed in water throughout the year and can not produce and burst apart, and constantly slowly discharging the needed nutrition of flowers, the present invention selects the particle fineness of gravel attapulgite flower ceramsite to be controlled at 1~3 millimeter.
Natural pond liquid decomposes through microorganism, has killed harmful viral bacterium, the nutrient that contains various plants growth, and abundant amino acid and various tethelin, VITAMIN etc., are a kind of quick-acting and the long-lasting liquid fertilizer that has both and become thoroughly decomposed.
Natural pond slag is rich in organic matter, soil ulmin, nitrogen, phosphorus, potassium, micronutrient element, multiple amino acids, enzyme and beneficial microorganism, can play the effect of good improvement soil, water content≤15% of natural pond slag.
Vegetable fibre after pulverizing is to pulverize after the plants such as the straw of farm crop, wood chip, bamboo bits and leaf are dried, plant fiber length≤15 millimeter after pulverizing, water content≤15% of vegetable fibre.
Vermiculite is after high-temperature roasting, and its volume energy expands rapidly several times to tens times, and the vermiculite after volumetric expansion, expanded vermiculite, is one of the lightest in the world mineral; Expanded vermiculite as soil improvement agent, can improve the structure of soil, and water storage soil moisture conservation improves ventilation property and the aquosity of soil, plays the multiple actions such as fertilizer conservation, water conservation, water storage, ventilative and mineral manure.
Perlite becomes a kind of lightweight, multifunctional novel shaped material through expansion.Have the features such as apparent density is light, thermal conductivity is low, chemical stability is good, pearlstone is for fertilizer conservation, water conservation, aseptic, good permeability on agricultural, gardens.
The water absorbent rate of High hydrophilous resin can reach hundreds of times even thousands of times of own wt, and it is 100~300 times that the present invention selects the water absorbent rate of High hydrophilous resin.
The present invention is achieved by following technical proposals:
1, the production method of phosphogypsum compression Nutrition Soil: (1) phosphogypsum is compressed in the stirrer of batching input running of Nutrition Soil and stir, after stirring, input boil down to phosphogypsum compression Nutrition Soil flap in tabletting machine, the gauge control of phosphogypsum compression Nutrition Soil flap is at 5~30 millimeters; (2) phosphogypsum being compressed to Nutrition Soil flap is transported to and in belt type microwave dry sterilizer, carries out temperature sterilization and dry, temperature is controlled at 60~100 DEG C, time is controlled at 30~120 minutes, sterilizing and dried phosphogypsum compression Nutrition Soil flap water content≤15%; (3) by sterilizing and dried phosphogypsum compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize in phosphogypsum compression Nutrition Soil flap the waste heat of self, proceed sterilizing and dry, after phosphogypsum compression Nutrition Soil flap is cooling, be packaged as the finished product of phosphogypsum compression Nutrition Soil.
The batching that phosphogypsum compresses Nutrition Soil is made up of following component by weight percentage: the vegetable fibre 1~10% after the gravel attapulgite flower ceramsite 2~15% after the mud 25~55% after phosphogypsum 15~35%, acidifying after dehydration, high sticky attapulgite clay 2~15%, natural pond immersion bubble, the peat 2~15% after pulverizing, natural pond slag 2~15%, pulverizing, expanded vermiculite 0.5~5%, pearlstone 0.5~5% and High hydrophilous resin 0.1~5%.
2, the batching of the phosphogypsum after dehydration is made up of following component by weight percentage: phosphogypsum work in-process 90~98%, quick dissolved sodium silicate 0.1~5%, polyvinyl alcohol 0.1~5%, Vltra tears 0.01~3% and sodium carbonate 0~3% after dehydration; The production method of the phosphogypsum after dehydration: by abrasive dust in the phosphogypsum batching input grinding machine after dehydration, particle fineness≤0.074 millimeter, the meal after abrasive dust is the phosphogypsum after dehydration;
The half-finished production method of phosphogypsum after dehydration: stir in the stirrer (1) input of the batching of phosphogypsum mixture having been turned round as phosphogypsum mixture, be phosphogypsum flap, thickness≤3 millimeter of phosphogypsum flap by extruding in phosphogypsum mixture input twin rollers; (2) phosphogypsum flap is transported to roasting in rotary type stoving oven, roasting time is 1~3 hour, maturing temperature is controlled at 250~350 DEG C, phosphogypsum flap water content≤5% after roasting, and the phosphogypsum flap after roasting is the phosphogypsum work in-process after dehydration;
The batching of phosphogypsum mixture is made up of following component by weight percentage: phosphogypsum 68~85%, attapulgite clay 7~20%, magnesium oxide 0.01~5% and water 1~20%.
3, the batching of mud acidification is made up of following component by weight percentage: phosphogypsum 2~30% and ferrous sulfate 0.01~5% after mud 68~95%, dehydration; The production method of the mud after acidifying: stir in the stirrer that the input of the batching of mud acidification has been turned round, after stirring, be transported in fermentation vat spontaneous fermentation 3~14 days, sludge pH value after spontaneous fermentation is controlled at 5.0~7.0, and spontaneous fermentation mud after treatment is the mud after acidifying.
4, be to soak in the gravel attapulgite flower ceramsite input natural pond liquid pool of 1~3 millimeter particle fineness, gravel attapulgite flower ceramsite is after soaking, can absorb fast a large amount of natural pond liquid, soak time is controlled at 30~60 minutes, the gravel attapulgite flower ceramsite taking out after natural pond immersion bubble carries out airing, gravel attapulgite flower ceramsite water content≤15% after airing.
The batching of gravel attapulgite flower ceramsite is made up of following component by weight percentage: high sticky attapulgite clay powder 1~10%, attapulgite clay mine tailing 5~25%, red bentonite in powder 5~20%, mud 45~65%, diatomite mine tailing 5~20% and powdered rice hulls 1~10%;
The production method of gravel attapulgite flower ceramsite: input Squeezinggranulator granulation after (1) the batching of gravel attapulgite flower ceramsite being added to stirrer for mixing, particle diameter is controlled at 8~25 millimeters, and particle length is controlled at 10~40 millimeters; (2) by the particle input internally heated type revolution roasting in kilns after granulation, maturing temperature is controlled at 550~850 DEG C, and roasting time is controlled at 1~6 hour; (3) will in the particle input crusher after roasting, pulverize as gravel particle and sieve, particle fineness be controlled at 1~12 millimeter, is gravel attapulgite flower ceramsite.
Gravel attapulgite flower ceramsite is to adopt " gravel attapulgite flower ceramsite " applied on November 10th, 2011 by the inventor, and Chinese patent Granted publication number is: CN 102503372 B, Granted publication day: on 04 17th, 2013.
5, high sticky attapulgite clay is the attapulgite clay that adopts the complete processing that improves viscosity of attapulgite clay to produce, it is characterized in that, and from the attapulgite clay of mining area exploitation, need to be through the weathering of 30~120 days; Modification processing method is: calculate by weight percentage, get the attapulgite clay 94~98% after weathering, evenly add 2~6% sodium carbonate, jointly input in fermentation vat, add clear water to soak ageing, soak time is 72~120 hours; Get the attapulgite clay after immersion, in input stirrer, stir, and by the attapulgite clay after stirring, be extruded into thin slice through extrusion machine, its gauge control is at 0.5~2 millimeter, by attapulgite clay thin slice, carry out airing, the attapulgite clay thin slice after airing, its water content≤15%; Batching is calculated by weight percentage: attapulgite clay 94~98%, High hydrophilous resin 0.5~5% and Mierocrystalline cellulose 0.5~3% after airing, above-mentioned batching is stirred, and after stirring, input and in grinding machine, carry out abrasive dust, particle fineness≤0.074 millimeter.
Above-mentioned production technique is to adopt " the improving the complete processing of viscosity of attapulgite clay " of being applied on June 20th, 2005 by the inventor, and Chinese patent Granted publication number is: CN 1317067C, Granted publication day: on May 23rd, 2007.
The detection method of high sticky attapulgite clay: get 28.0g attapulgite clay powder sample, add in the suspension cup of homogenizer, add again 372g water, suspension cup is placed on homogenizer, under the rotating speed of 11000 revs/min, stir 20 minutes, to pour in the beaker of 250mL through high-speed stirring sample suspension, use NDJ-1 type rotational viscosimeter to carry out the viscosity of test suspension liquid, tested viscosity value >=2200 mPas is high sticky attapulgite clay.
Described in the present invention, PCm is all weight percentage.
After the acidified processing of mud, pH value is controlled at 5.0~7.0, can improve the utilization ratio of mud, is conducive to plant and absorbs the nutrition in mud comprehensively, guarantees that plant can grow by normal Fast Growth.
The fresh sludge that city domestic sewage treatment plant produces is alkalescence mostly, pH value is 8~10, in fresh sludge, add phosphogypsum and ferrous sulfate after dehydration to carry out after acidification, mud is slightly acidic, and pH value is controlled at 5.0~7.0, can spontaneous fermentation under the normal temperature condition of temperature >=20 DEG C, in spontaneous fermentation process, nitrogen phosphorus potassium and organism nutritive substance in mud have obtained further raising, and foul smell obviously reduces, and its inherent moisture also will significantly decline.
Sterilizing and dried phosphogypsum compression Nutrition Soil flap are transported in insulated sterilizing storehouse, utilize waste heat to continue phosphogypsum compression Nutrition Soil to carry out sterilizing and dry, can continue to kill germ and the insects such as excrement colibacillus group that in phosphogypsum compression Nutrition Soil, Disabled stays, roundworm egg, nematode, weed seed in mud and peat can also be steamed extremely, avoid the germination again of weed seed.
Ferrous sulfate not only can conditioning of mud potential of hydrogen, can also impel chlorophyll formation, can prevent and treat flowers and trees because of the yellows that iron deficiency causes, be the indispensable elements of the acid flowers and trees of happiness.
Gravel attapulgite flower ceramsite is inputted in the liquid pool of natural pond and soaked, and gravel attapulgite flower ceramsite inside will suck a large amount of natural ponds liquid, to increase effective nutritive ingredient of phosphogypsum compression Nutrition Soil; Gravel attapulgite flower ceramsite can also play and regulate soil aggregate, coordinate moisture and ventilation property in phosphogypsum compression Nutrition Soil, is conducive to crop root and stretches and normal growth.
The mud that directly utilizes city domestic sewage treatment plant is main raw material, after acidified modification, stirring, compression and temperature sterilization, produce a kind of phosphogypsum compression Nutrition Soil of sheet, volume-diminished before the compression of small product size ratio is below 25%, greatly reduce production and the transportation cost of product, increase the economic benefit of enterprise.
The using method of phosphogypsum compression Nutrition Soil: phosphogypsum is compressed to Nutrition Soil and put into water and soak after 5 minutes, the phosphogypsum compression Nutrition Soil of sheet is reduced to loose Nutrition Soil very soon, and after water suction, the weight of the former compression Nutrition Soil of weight ratio of loose Nutrition Soil has increased more than 5 times.
Phosphogypsum compression Nutrition Soil can be used for construction and the maintenance processes in cities and towns green space system or forest land, suburb, as cultivation medium soil, soil improvement material, quality meets the national standard of " GB/T 23486-2009 urban wastewater treatment firm sludge disposal afforestation shale ".
Adopt production method of the present invention to produce phosphogypsum compression Nutrition Soil; production technique is simple; do not need separately to mud concentrate, recuperate under medical treatment, dewater, stablize, the course of processing of mummification or burning; in whole production process, there is no waste gas, dust and dry sound; be conducive to preserve the ecological environment, avoided surrounding enviroment to cause secondary pollution.
In phosphogypsum compression Nutrition Soil, contain a large amount of nitrogen, phosphorus, potassium, organic matter and various trace elements, be that a kind of nutrition is complete, fertilizer efficiency is high, nontoxic, aseptic, harmless, odorless and the good high-quality Nutrition Soil of water retention property, can provide plant-growth necessary nutritive element, do not use chemical fertilizer and chemical pesticide, reduce pathogenic bacteria and the harm of insect to plant, the normal growth that is conducive to plant is grown.
Phosphogypsum compression Nutrition Soil can also be used to produce the phosphogypsum compression planting brick after the dehydration of different shape.
The various wastes of a large amount of employing in the batching of phosphogypsum compression Nutrition Soil, are not only conducive to improve resource utilization, turn waste into wealth, and can also reduce land occupation, and protection and environment purification, save the energy, reduces production costs, and increases economic efficiency.
The production method of phosphogypsum compression Nutrition Soil is applicable to produce the phosphogypsum compression Nutrition Soil of different ingredients.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
1, the production method of phosphogypsum compression Nutrition Soil: (1) phosphogypsum is compressed in the stirrer of batching input running of Nutrition Soil and stir, after stirring, input boil down to phosphogypsum compression Nutrition Soil flap in tabletting machine, the gauge control of phosphogypsum compression Nutrition Soil flap is at 28 millimeters; (2) phosphogypsum is compressed to Nutrition Soil flap and be transported to and in belt type microwave dry sterilizer, carry out temperature sterilization and dry, temperature is controlled at 80~90 DEG C, and the time is controlled at 55 minutes, sterilizing and dried phosphogypsum compression Nutrition Soil flap water content≤13%; (3) by sterilizing and dried phosphogypsum compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize in phosphogypsum compression Nutrition Soil flap the waste heat of self, proceed sterilizing and dry, after phosphogypsum compression Nutrition Soil flap is cooling, be packaged as the finished product of phosphogypsum compression Nutrition Soil.
The batching that phosphogypsum compresses Nutrition Soil is made up of following component by weight percentage: the vegetable fibre 4% after the gravel attapulgite flower ceramsite 6% after the mud 52% after phosphogypsum 20%, acidifying after dehydration, high sticky attapulgite clay 7%, natural pond immersion bubble, the peat 5% after pulverizing, natural pond slag 4%, pulverizing, expanded vermiculite 0.8%, pearlstone 0.6% and High hydrophilous resin 0.6%.
2, the batching of the phosphogypsum after dehydration is made up of following component by weight percentage: phosphogypsum work in-process 97.5%, quick dissolved sodium silicate 1%, polyvinyl alcohol 0.8%, Vltra tears 0.7% and sodium carbonate 0% after dehydration; The production method of the phosphogypsum after dehydration: by abrasive dust in the phosphogypsum batching input grinding machine after dehydration, particle fineness≤0.074 millimeter, the meal after abrasive dust is the phosphogypsum after dehydration;
The half-finished production method of phosphogypsum after dehydration: stir in the stirrer (1) input of the batching of phosphogypsum mixture having been turned round as phosphogypsum mixture, be phosphogypsum flap, thickness≤3 millimeter of phosphogypsum flap by extruding in phosphogypsum mixture input twin rollers; (2) phosphogypsum flap is transported to roasting in rotary type stoving oven, roasting time is 2 hours, and maturing temperature is controlled at 300~350 DEG C, phosphogypsum flap water content≤5% after roasting, and the phosphogypsum flap after roasting is the phosphogypsum work in-process after dehydration;
The batching of phosphogypsum mixture is made up of following component by weight percentage: phosphogypsum 74%, attapulgite clay 18%, magnesium oxide 1.5% and water 6.5%.
3, the batching of mud acidification is made up of following component by weight percentage: phosphogypsum 17.3% and ferrous sulfate 0.7% after mud 82%, dehydration; The production method of the mud after acidifying: stir in the stirrer that the input of the batching of mud acidification has been turned round, after stirring, be transported in fermentation vat spontaneous fermentation 8 days, sludge pH value after spontaneous fermentation is controlled at 5.5~7.0, and spontaneous fermentation mud after treatment is the mud after acidifying.
4, be to soak in the gravel attapulgite flower ceramsite input natural pond liquid pool of 1~3 millimeter particle fineness, soak time is controlled at 40 minutes, the gravel attapulgite flower ceramsite taking out after natural pond immersion bubble carries out airing, gravel attapulgite flower ceramsite water content≤13% after airing.
Claims (8)
1. the production method of a phosphogypsum compression Nutrition Soil, it is characterized in that, (1) phosphogypsum is compressed in the stirrer of batching input running of Nutrition Soil and stir, after stirring, input boil down to phosphogypsum compression Nutrition Soil flap in tabletting machine, the gauge control of phosphogypsum compression Nutrition Soil flap is at 5~30 millimeters; (2) phosphogypsum being compressed to Nutrition Soil flap is transported to and in belt type microwave dry sterilizer, carries out temperature sterilization and dry, temperature is controlled at 60~100 DEG C, time is controlled at 30~120 minutes, sterilizing and dried phosphogypsum compression Nutrition Soil flap water content≤15%; (3) by sterilizing and dried phosphogypsum compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize in phosphogypsum compression Nutrition Soil flap the waste heat of self, proceed sterilizing and dry, after phosphogypsum compression Nutrition Soil flap is cooling, be packaged as the finished product of phosphogypsum compression Nutrition Soil;
The batching that described phosphogypsum compresses Nutrition Soil is made up of following component by weight percentage: the vegetable fibre 1~10% after the gravel attapulgite flower ceramsite 2~15% after the mud 25~55% after phosphogypsum 15~35%, acidifying after dehydration, high sticky attapulgite clay 2~15%, natural pond immersion bubble, the peat 2~15% after pulverizing, natural pond slag 2~15%, pulverizing, expanded vermiculite 0.5~5%, pearlstone 0.5~5% and High hydrophilous resin 0.1~5%.
2. the phosphogypsum batching after dewatering according to claim 1, it is characterized in that, formed by following component by weight percentage: phosphogypsum work in-process 90~98%, quick dissolved sodium silicate 0.1~5%, polyvinyl alcohol 0.1~5%, Vltra tears 0.01~3% and sodium carbonate 0~3% after dehydration; The production method of the phosphogypsum after dehydration: by abrasive dust in the phosphogypsum batching input grinding machine after dehydration, particle fineness≤0.074 millimeter, the meal after abrasive dust is the phosphogypsum after dehydration;
The half-finished production method of phosphogypsum after described dehydration: stir in the stirrer (1) input of the batching of phosphogypsum mixture having been turned round as phosphogypsum mixture, be phosphogypsum flap, thickness≤3 millimeter of phosphogypsum flap by extruding in phosphogypsum mixture input twin rollers; (2) phosphogypsum flap is transported to roasting in rotary type stoving oven, roasting time is 1~3 hour, maturing temperature is controlled at 250~350 DEG C, phosphogypsum flap water content≤5% after roasting, and the phosphogypsum flap after roasting is the phosphogypsum work in-process after dehydration;
The batching of described phosphogypsum mixture is made up of following component by weight percentage: phosphogypsum 68~85%, attapulgite clay 7~20%, magnesium oxide 0.01~5% and water 1~20%.
3. the batching of mud acidification according to claim 1, is characterized in that, is made up of by weight percentage following component: phosphogypsum 2~30% and ferrous sulfate 0.01~5% after mud 68~95%, dehydration; The production method of the mud after acidifying: stir in the stirrer that the input of the batching of mud acidification has been turned round, after stirring, be transported in fermentation vat spontaneous fermentation 3~14 days, sludge pH value after spontaneous fermentation is controlled at 5.0~7.0, and spontaneous fermentation mud after treatment is the mud after acidifying.
4. be to soak in the gravel attapulgite flower ceramsite input natural pond liquid pool of 1~3 millimeter particle fineness, gravel attapulgite flower ceramsite is after soaking, can absorb fast a large amount of natural pond liquid, soak time is controlled at 30~60 minutes, the gravel attapulgite flower ceramsite taking out after natural pond immersion bubble carries out airing, gravel attapulgite flower ceramsite water content≤15% after airing;
The batching of described gravel attapulgite flower ceramsite is made up of following component by weight percentage: high sticky attapulgite clay powder 1~10%, attapulgite clay mine tailing 5~25%, red bentonite in powder 5~20%, mud 45~65%, diatomite mine tailing 5~20% and powdered rice hulls 1~10%; The production method of gravel attapulgite flower ceramsite: input Squeezinggranulator granulation after (1) the batching of gravel attapulgite flower ceramsite being added to stirrer for mixing, particle diameter is controlled at 8~25 millimeters, and particle length is controlled at 10~40 millimeters; (2) by the particle input internally heated type revolution roasting in kilns after granulation, maturing temperature is controlled at 550~850 DEG C, and roasting time is controlled at 1~6 hour; (3) will in the particle input crusher after roasting, pulverize as gravel particle and sieve, particle fineness be controlled at 1~12 millimeter, is gravel attapulgite flower ceramsite.
5. high sticky attapulgite clay is the attapulgite clay that adopts the complete processing that improves viscosity of attapulgite clay to produce according to claim 1, it is characterized in that, and from the attapulgite clay of mining area exploitation, need to be through the weathering of 30~120 days; Modification processing method is: calculate by weight percentage, get the attapulgite clay 94~98% after weathering, evenly add 2~6% sodium carbonate, jointly input in fermentation vat, add clear water to soak ageing, soak time is 72~120 hours; Get the attapulgite clay after immersion, in input stirrer, stir, and by the attapulgite clay after stirring, be extruded into thin slice through extrusion machine, its gauge control is at 0.5~2 millimeter, by attapulgite clay thin slice, carry out airing, the attapulgite clay thin slice after airing, its water content≤15%; Batching is calculated by weight percentage: attapulgite clay 94~98%, High hydrophilous resin 0.5~5% and Mierocrystalline cellulose 0.5~3% after airing, above-mentioned batching is stirred, and after stirring, input and in grinding machine, carry out abrasive dust, particle fineness≤0.074 millimeter;
The detection method of high sticky attapulgite clay, it is characterized in that, get 28.0g attapulgite clay powder sample, add in the suspension cup of homogenizer, then add 372g water, suspension cup is placed on homogenizer, under the rotating speed of 11000 revs/min, stir 20 minutes, to pour in the beaker of 250mL through high-speed stirring sample suspension, use NDJ-1 type rotational viscosimeter to carry out the viscosity of test suspension liquid, tested viscosity value >=2200 mPas is high sticky attapulgite clay.
6. the batching of phosphogypsum compression Nutrition Soil according to claim 1, is characterized in that peat particle fineness≤2 millimeter after pulverizing, water content≤15% of peat, water content≤15% of natural pond slag, plant fiber length≤15 millimeter after pulverizing, water content≤15% of vegetable fibre.
7. the batching of phosphogypsum mixture according to claim 2, is characterized in that particle fineness≤5 millimeter of attapulgite clay, water content≤15% of attapulgite clay.
8. the batching of mud acidification according to claim 3, is characterized in that water content≤90% of mud.
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Cited By (5)
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CN104926552A (en) * | 2015-07-27 | 2015-09-23 | *** | Production method for ardealite carbonization nutrient soil |
CN109220345A (en) * | 2018-11-15 | 2019-01-18 | *** | For planting the ardealite modular tree planting bag of shrub |
CN109220483A (en) * | 2018-11-18 | 2019-01-18 | *** | Using the method for ardealite modular tree planting bag plantation shrub |
CN110951491A (en) * | 2018-09-26 | 2020-04-03 | 广东清大同科环保技术有限公司 | Titanium gypsum particle soil and preparation method thereof |
CN111548110A (en) * | 2020-04-16 | 2020-08-18 | 朱健 | Phosphogypsum ecological brick, preparation method and side slope fixing method |
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CN101036442A (en) * | 2007-03-23 | 2007-09-19 | 方立成 | Compressed type plant culture stroma |
CN101434495A (en) * | 2007-11-13 | 2009-05-20 | 任兆磊 | Phosphogypsum sustained-controlled compound fertilizer |
CN103130573A (en) * | 2013-03-14 | 2013-06-05 | 河北省林业科学研究院 | Compression-type forest tree seed cultivating substrate |
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CN101036442A (en) * | 2007-03-23 | 2007-09-19 | 方立成 | Compressed type plant culture stroma |
CN101434495A (en) * | 2007-11-13 | 2009-05-20 | 任兆磊 | Phosphogypsum sustained-controlled compound fertilizer |
CN103130573A (en) * | 2013-03-14 | 2013-06-05 | 河北省林业科学研究院 | Compression-type forest tree seed cultivating substrate |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104926552A (en) * | 2015-07-27 | 2015-09-23 | *** | Production method for ardealite carbonization nutrient soil |
CN110951491A (en) * | 2018-09-26 | 2020-04-03 | 广东清大同科环保技术有限公司 | Titanium gypsum particle soil and preparation method thereof |
CN109220345A (en) * | 2018-11-15 | 2019-01-18 | *** | For planting the ardealite modular tree planting bag of shrub |
CN109220483A (en) * | 2018-11-18 | 2019-01-18 | *** | Using the method for ardealite modular tree planting bag plantation shrub |
CN111548110A (en) * | 2020-04-16 | 2020-08-18 | 朱健 | Phosphogypsum ecological brick, preparation method and side slope fixing method |
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