CN104140334B - The production method of vermiculite compression Nutrition Soil - Google Patents
The production method of vermiculite compression Nutrition Soil Download PDFInfo
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- CN104140334B CN104140334B CN201410396888.5A CN201410396888A CN104140334B CN 104140334 B CN104140334 B CN 104140334B CN 201410396888 A CN201410396888 A CN 201410396888A CN 104140334 B CN104140334 B CN 104140334B
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Abstract
The invention discloses the production method of a kind of vermiculite compression Nutrition Soil, the main points of its technical scheme are, first expanded vermiculite and mud are carried out acidification, then batching vermiculite being compressed Nutrition Soil is carried out stirring, compressed, be packaged as finished product after microwave temperature sterilization.Vermiculite compression Nutrition Soil is made up of materials such as vegetable fibre, pearlstone and the High hydrophilous resins after the expanded vermiculite after acidifying, the mud after acidifying, quick dissolved sodium silicate, polyvinyl alcohol, ferrous sulfate, peat, flower ceramsite, high sticky attapulgite clay, natural pond liquid, natural pond slag, pulverizing.Containing a large amount of nitrogen, phosphorus, potassium, organic matter and various trace elements in vermiculite compression Nutrition Soil; can provide plant-growth necessary nutritive element; reduce the harm of pathogenic bacteria and pests on plants; the normal growth being conducive to plant is grown; preserve the ecological environment; avoid and cause secondary pollution to surrounding enviroment, the production method of vermiculite compression Nutrition Soil is applicable to the vermiculite compression Nutrition Soil producing different ingredients.
Description
Technical field
The present invention relates to Nutrition Soil, be specifically related to the production method of a kind of vermiculite compression Nutrition Soil.
Background technology
Vermiculite is a kind of natural, nontoxic mineral substance, dilatable mineral under high temperature action, it is a kind of more rare mineral, belong to silicate, its crystalline structure is oblique system, profile, it looks as mica, and because vermiculite has the ability of ion-exchange, it has great effect to the nutrition of soil.
Vermiculite is a kind of clay mineral similar to montmorillonite, for the silicate of laminate structure, generally formed through hydrothermal alteration or weathering by biotite, it is then so trickle that to become soil shape when it has with thick biotite appearance sometimes, fabric and raw-vermiculite sheet is after high-temperature roasting, its volume energy undergoes rapid expansion several times to tens times, the vermiculite after volumetric expansion is just expanded vermiculite.
Mud is the smelly paste of a kind of easy corruption that produces in sewage treatment process, it is enriched the pollutent in sewage, containing 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 metals, without effectively processing disposal, produce serious harm by environment.
Sludge moisture content >=80% that municipal sewage plant produces, mud is mostly in alkalescence, and pH value is 8 ~ 10, the product of unsuitable direct production recycling.
Investigation display, current China has the mud of 80% not to be effectively addressed, and even has and is simply discarded in the PE such as farmland, river greatly, become new source of pollution.
At present the mud of a large amount of non-stabilizing treatment has become the heavy burden of sewage work, and mud that is how that output is huge, complicated component carries out properly processing safely, make that it is innoxious, minimizing, resource utilization, become deeply concerned key subjects.
Nutrition Soil be in order to meet seedling growth grow and particular formulation containing multiple mineral nutrition, loose ventilation, 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 import high-quality peat, coconut palm chaff is selected from, the Nutrition Soil mixed 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 relatively lighter and loose, the conventional products volume of Nutrition Soil is relatively large, is unfavorable for reducing the cost produced and transport.
Summary of the invention
The object of the invention is to overcome weak point in prior art, provide a kind of vermiculite to compress the production method of Nutrition Soil.
The production method of vermiculite compression Nutrition Soil: first expanded vermiculite and mud are carried out acidification, then batching vermiculite being compressed Nutrition Soil is carried out stirring, is compressed, be packaged as finished product after microwave temperature sterilization.
Vermiculite compression Nutrition Soil is made up of materials such as vegetable fibre, pearlstone and the High hydrophilous resins after the expanded vermiculite after acidifying, the mud after acidifying, quick dissolved sodium silicate, polyvinyl alcohol, ferrous sulfate, peat, flower ceramsite, high sticky attapulgite clay, natural pond liquid, natural pond slag, pulverizing.
Expanded vermiculite has very strong thermal and insulating performance, cationic exchange and adsorptivity, the stable chemical nature of expanded vermiculite, and the present invention selects the expanded vermiculite after pulverizing, particle fineness≤0.5 millimeter of expanded vermiculite.
After the acidified process of expanded vermiculite, pH value controls 5.0 ~ 7.0, can improve the utilization ratio of expanded vermiculite.
Attapulgite has unique dispersion, high temperature resistant, anti-good colloidal property and the higher adsorptive power such as saline and alkaline, and has certain plasticity-and cohesive force.Concavo-convex excellent stone clay after the acidify can adsorb foreign odor taste, heavy metal ion and carcinogenic substance in mud, the nutritive ingredient in mud is kept 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.
Sulfuric acid select concentration be 98% the vitriol oil.
Quick dissolved sodium silicate is white powder material, can rapid solution in water, have 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, external form divide cotton-shaped, particulate state, Powdered three kinds; Nonpoisonous and tasteless, particulate state can be dissolved in 80--90 DEG C of water, pulverous other powders pre-dispersed after 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, excellent film-forming properties and the feature such as resistance to enzymatic, dispersiveness and cohesiveness widely.
Anhydrous slufuric acid ferrous iron is white powder, ferrous sulfate containing crystal water is pale green crystals, 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 vermiculite compression Nutrition Soil alkalescence, as the supplement of plant ferro element, control plant there is physiological disturbance because of iron deficiency, 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 expanded vermiculite pH value after acidifying.
Magnesium oxide has the general character of basic oxide, belongs to gelling material, can improve the colloidal property of the expanded vermiculite after acidifying.
For tackling the significant challenge of water resource environment, China will continue the investment strengthening urban infrastructure.The continuation of the energy-conserving and environment-protective requirement day by day improved along with government, municipal public use is 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.
Containing a considerable amount of nitrogen, phosphorus, potassium and trace element in the mud of city domestic sewage treatment plant, through suitable art breading, as cultivation medium soil, soil improvement material, also can be used as the raw material making fertilizer, the mud that the present invention selects city domestic sewage treatment plant to discharge, water content≤90% of mud.
High sticky attapulgite clay is the attapulgite clay adopting the complete processing improving viscosity of attapulgite clay to produce, attapulgite clay is after batching stirs, abrasive dust is carried out for high sticky attapulgite clay powder, particle fineness≤0.074 millimeter in input grinding machine.
High sticky attapulgite clay soil property is fine and smooth, and have oily soapy, light weight, property are crisp, fracture is conchoidal or irregular shape, and water-absorbent is strong, tool viscosity and plasticity-time wet, viscosity >=the 2200mPas of high sticky attapulgite clay powder, sticking power is good, is conducive to the bonding between raw material.
Peat is also called 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 containing very high organic matter, humic acid and nutrition, the peat after pulverizing pulverizes after being dried by peat, 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 to produce throughout the year and burst apart, and the nutrition constantly required for slow releasing flowers, the present invention selects the particle fineness of gravel attapulgite flower ceramsite to control at 1 ~ 3 millimeter.
Natural pond liquid, through microbial decomposition, has killed harmful virus bacterium, the nutrient containing various plants growth, abundant amino acid and various tethelin, VITAMIN etc., is a kind of quick-acting and long-lastingly has both and the liquid fertilizer 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 well improvement soil, water content≤15% of natural pond slag.
Vegetable fibre after pulverizing pulverizes after being dried by the plants such as the straw of farm crop, wood chip, bamboo bits and leaf, plant fiber length≤15 millimeter after pulverizing, water content≤15% of vegetable fibre.
Vermiculite after high-temperature roasting, its volume energy undergoes rapid expansion several times to tens times, the vermiculite after volumetric expansion, expanded vermiculite, is one of the lightest in the world mineral; Expanded vermiculite is used as soil improvement agent, can improve the structure of soil, and water storage preserves soil moisture, and improves the ventilation property of soil and aquosity, 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 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 the present invention selects the water absorbent rate of High hydrophilous resin to be 100 ~ 300 times.
The present invention is achieved by following technical proposals:
1, the production method of vermiculite compression Nutrition Soil: (1) vermiculite is compressed in the stirrer of the batching input running of Nutrition Soil and stir, input boil down to vermiculite compression Nutrition Soil flap in tabletting machine after stirring, the gauge control of vermiculite compression Nutrition Soil flap is at 5 ~ 30 millimeters; (2) vermiculite is compressed Nutrition Soil flap to be transported in belt type microwave dry sterilizer and to carry out temperature sterilization and drying, temperature controls at 60 ~ 100 DEG C, time controling at 30 ~ 120 minutes, sterilizing and dried vermiculite compression Nutrition Soil flap water content≤15%; (3) by sterilizing and dried vermiculite compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize vermiculite to compress in Nutrition Soil flap the waste heat of self, proceed sterilizing and drying, after the cooling of vermiculite compression Nutrition Soil flap, be packaged as the finished product of vermiculite compression Nutrition Soil.
The batching that vermiculite compresses Nutrition Soil is made up of following component by weight percentage: vegetable fibre 1 ~ 10%, pearlstone 0.5 ~ 5% and High hydrophilous resin 0.1 ~ 5% after the gravel attapulgite flower ceramsite 2 ~ 15% after the expanded vermiculite 15 ~ 35% after acidifying, the mud 25 ~ 55% after acidifying, high sticky attapulgite clay 2 ~ 15%, natural pond immersion bubble, the peat 2 ~ 15% after pulverizing, natural pond slag 2 ~ 15%, pulverizing.
2, the expanded vermiculite batching after acidifying is made up of following component by weight percentage: the expanded vermiculite work in-process 90 ~ 99% after acidifying, quick dissolved sodium silicate 0.1 ~ 5%, polyvinyl alcohol 0.1 ~ 5%, Vltra tears 0.01 ~ 3% and sodium carbonate 0 ~ 3%; The production method of the expanded vermiculite after acidifying: by abrasive dust in the expanded vermiculite batching input grinding machine after acidifying, particle fineness≤0.074 millimeter, the meal after abrasive dust is the expanded vermiculite after acidifying.
The half-finished production method of expanded vermiculite after acidifying: stir in the stirrer (1) input of the batching of expanded vermiculite mixture operated, then dilute sulphuric acid is slowly added in expanded vermiculite mixture carry out acidification; (2), by the expanded vermiculite mixture after acidification, the extruding of input twin rollers is flap, thickness≤3 millimeter of flap; (3) flap is transported to roasting in rotary type stoving oven, roasting time is 1 ~ 3 hour, and maturing temperature controls at 250 ~ 350 DEG C, flap water content≤5% after roasting, and the flap after roasting is the expanded vermiculite work in-process after acidifying.
The batching of expanded vermiculite mixture is made up of following component by weight percentage: expanded vermiculite 68 ~ 92%, attapulgite clay 5 ~ 30% and magnesium oxide 0.1 ~ 3%; The batching of acidification is made up of following component by weight percentage: expanded vermiculite mixture 65 ~ 95% and dilute sulphuric acid 5 ~ 35%; The batching of dilute sulphuric acid is made up of following component by weight percentage: concentration is the vitriol oil 1 ~ 10% and the water 90 ~ 99% of 98%, concentration be 98% vitriol oil per-cent be weight percentage.
3, the batching of mud acidification is made up of following component by weight percentage: the expanded vermiculite 2 ~ 30% after mud 68 ~ 95%, acidifying and ferrous sulfate 0.01 ~ 5%; The production method of the mud after acidifying: is stirred in the stirrer that the input of the batching of mud acidification has been operated, spontaneous fermentation is transported in fermentation vat 3 ~ 14 days after stirring, sludge pH after spontaneous fermentation controls 5.0 ~ 7.0, and the mud after spontaneous fermentation process is the mud after acidifying.
4, be soak particle fineness in the gravel attapulgite flower ceramsite input natural pond liquid pool of 1 ~ 3 millimeter, gravel attapulgite flower ceramsite is after soaking, a large amount of natural pond liquid can be absorbed fast, soak time controls at 30 ~ 60 minutes, the gravel attapulgite flower ceramsite taken 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 stirrer for mixing, particle diameter controls at 8 ~ 25 millimeters, and particle length controls at 10 ~ 40 millimeters; (2), by the particle input internally heated type revolution roasting in kilns after granulation, maturing temperature controls at 550 ~ 850 DEG C, and roasting time controls at 1 ~ 6 hour; (3) will pulverize as gravel particle in the particle input crusher after roasting and sieve, particle fineness controls at 1 ~ 12 millimeter, is gravel attapulgite flower ceramsite.
Gravel attapulgite flower ceramsite adopts to apply for " gravel attapulgite flower ceramsite " by the present inventor on November 10th, 2011, and Chinese patent Authorization Notice No. is: CN102503372B, authorized announcement date: on 04 17th, 2013.
5, high sticky attapulgite clay is the attapulgite clay adopting the complete processing improving viscosity of attapulgite clay to produce, and it is characterized in that, from the attapulgite clay of mining area exploitation, needs the weathering through 30 ~ 120 days; Modification processing method is: calculate by weight percentage, gets the attapulgite clay after weathering 94 ~ 98%, evenly adds 2 ~ 6% sodium carbonate, and in common input fermentation vat, add clear water and carry out immersion ageing, soak time is 72 ~ 120 hours; Get the attapulgite clay after immersion, stir in input stirrer, and by the attapulgite clay after stirring, be extruded into thin slice through extrusion machine, its gauge control 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: the attapulgite clay 94 ~ 98% after airing, High hydrophilous resin 0.5 ~ 5% and Mierocrystalline cellulose 0.5 ~ 3%, above-mentioned batching is stirred, inputs in grinding machine and carry out abrasive dust, particle fineness≤0.074 millimeter after stirring.
Above-mentioned production technique adopts to be applied for " improving the complete processing of viscosity of attapulgite clay " on June 20th, 2005 by the present inventor, and Chinese patent Authorization Notice No. is: CN1317067C, authorized announcement date: 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 372g water again, suspension cup is placed on homogenizer, stir 20 minutes under the rotating speed of 11000 revs/min, to pour in the beaker of 250mL through high-speed stirring sample suspension again, use NDJ-1 type rotational viscosimeter to carry out the viscosity of test suspension liquid, tested viscosity value >=2200mPas is high sticky attapulgite clay.
Described in the present invention, PCm is all weight percentage.
After the acidified process of expanded vermiculite, pH value controls 5.0 ~ 7.0, can improve the utilization ratio of expanded vermiculite, not only can bring good economic benefit, environmental benefit and social benefit, the expanded vermiculite after acidifying has good thixotropy, plasticity-and close-burning feature.
After the acidified process of mud, pH value controls 5.0 ~ 7.0, can improve the utilization ratio of mud, is conducive to the nutrition in plant overall absorption mud, guarantees that plant can normally grow fast.
The fresh sludge that city domestic sewage treatment plant produces is mostly in alkalescence, pH value is 8 ~ 10, add after the expanded vermiculite after acidifying and ferrous sulfate carry out acidification in fresh sludge, mud is slightly acidic, and pH value controls 5.0 ~ 7.0, can spontaneous fermentation under the normal temperature condition of temperature >=20 DEG C, in spontaneous fermentation process, N P and K in mud and organism nutritive substance obtain further raising, and foul smell obviously reduces, and its inherent moisture also will significantly decline.
Sterilizing and dried vermiculite compression Nutrition Soil flap are transported in insulated sterilizing storehouse, waste heat is utilized to continue to carry out sterilizing and drying to vermiculite compression Nutrition Soil, can continue to kill germ and the insect such as excrement colibacillus group, roundworm egg, nematode that in vermiculite compression Nutrition Soil, Disabled stays, weed seed in mud and peat can also be steamed dead, avoid the germination again of weed seed.
Ferrous sulfate not only can the potential of hydrogen of conditioning of mud, and can also impel chlorophyll formation, can prevent and treat the yellows that flowers and trees cause because of iron deficiency, be the indispensable elements of the acid flowers and trees of happiness.
Inputted by gravel attapulgite flower ceramsite in the liquid pool of natural pond and soak, gravel attapulgite flower ceramsite inside will suck a large amount of natural ponds liquid, to increase effective nutritive ingredient of vermiculite compression Nutrition Soil; Gravel attapulgite flower ceramsite can also play and regulate soil aggregate, coordinate moisture and ventilation property in vermiculite compression Nutrition Soil, is conducive to crop root and stretches and normal growth.
Directly utilize the mud of city domestic sewage treatment plant for main raw material, a kind of vermiculite compression Nutrition Soil of sheet is produced after acidified modification, stirring, compression and temperature sterilization, small product size is than the volume-diminished less than 25% before compression, greatly reduce production and the transportation cost of product, increase the economic benefit of enterprise.
The using method of vermiculite compression Nutrition Soil: vermiculite is compressed Nutrition Soil and put into water immersion after 5 minutes, the vermiculite compression Nutrition Soil of sheet is reduced to loose Nutrition Soil very soon, and the weight of the former compression Nutrition Soil of weight ratio of Nutrition Soil loose after water suction adds more than 5 times.
Vermiculite compression Nutrition Soil can be used for construction and the maintenance processes in green land in town system or forest land, suburb, as cultivation medium soil, soil improvement material, the national standard that quality meets " GB/T23486-2009 urban wastewater treatment firm sludge disposal afforestation shale ".
Production method of the present invention is adopted to produce vermiculite compression Nutrition Soil; production technique is simple; do not need to concentrate mud separately, recuperate under medical treatment, dewater, stablize, the course of processing of mummification or burning; waste gas, dust and dry sound is not had in whole production process; be conducive to preserving the ecological environment, avoid and secondary pollution is caused to surrounding enviroment.
Containing a large amount of nitrogen, phosphorus, potassium, organic matter and various trace elements in vermiculite compression Nutrition Soil, 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 the harm of pathogenic bacteria and pests on plants, the normal growth being conducive to plant is grown.
Vermiculite compression Nutrition Soil can also be used to the vermiculite compression planting brick producing different shape.
The various waste of a large amount of employing in the batching of vermiculite compression Nutrition Soil, is not only conducive to improving resource utilization, turns waste into wealth, can also reduce land occupation, protection and environment purification, save the energy, reduce production cost, increase economic efficiency.
The production method of vermiculite compression Nutrition Soil is applicable to the vermiculite compression Nutrition Soil producing different ingredients.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
1, the production method of vermiculite compression Nutrition Soil: (1) vermiculite is compressed in the stirrer of the batching input running of Nutrition Soil and stir, input boil down to vermiculite compression Nutrition Soil flap in tabletting machine after stirring, the gauge control of vermiculite compression Nutrition Soil flap is at 26 millimeters; (2) vermiculite is compressed Nutrition Soil flap to be transported in belt type microwave dry sterilizer and to carry out temperature sterilization and drying, temperature controls at 70 ~ 90 DEG C, time controling at 40 minutes, sterilizing and dried vermiculite compression Nutrition Soil flap water content≤12%; (3) by sterilizing and dried vermiculite compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize vermiculite to compress in Nutrition Soil flap the waste heat of self, proceed sterilizing and drying, after the cooling of vermiculite compression Nutrition Soil flap, be packaged as the finished product of vermiculite compression Nutrition Soil.
The batching that vermiculite compresses Nutrition Soil is made up of following component by weight percentage: vegetable fibre 4%, pearlstone 1.2% and High hydrophilous resin 0.8% after the gravel attapulgite flower ceramsite 6% after the expanded vermiculite 20% after acidifying, the mud 52% after acidifying, high sticky attapulgite clay 7%, natural pond immersion bubble, the peat 5% after pulverizing, natural pond slag 4%, pulverizing.
2, the expanded vermiculite batching after acidifying is made up of following component by weight percentage: the expanded vermiculite work in-process 97% after acidifying, quick dissolved sodium silicate 1.2%, polyvinyl alcohol 1.1%, Vltra tears 0.7% and sodium carbonate 0%; The production method of the expanded vermiculite after acidifying: by abrasive dust in the expanded vermiculite batching input grinding machine after acidifying, particle fineness≤0.074 millimeter, the meal after abrasive dust is the expanded vermiculite after acidifying.
The half-finished production method of expanded vermiculite after acidifying: stir in the stirrer (1) input of the batching of expanded vermiculite mixture operated, then dilute sulphuric acid is slowly added in expanded vermiculite mixture carry out acidification; (2), by the expanded vermiculite mixture after acidification, the extruding of input twin rollers is flap, thickness≤3 millimeter of flap; (3) flap is transported to roasting in rotary type stoving oven, roasting time is 2 hours, and maturing temperature controls at 300 ~ 350 DEG C, flap water content≤5% after roasting, and the flap after roasting is the expanded vermiculite work in-process after acidifying.
The batching of expanded vermiculite mixture is made up of following component by weight percentage: expanded vermiculite 74%, attapulgite clay 24.5% and magnesium oxide 1.5%; The batching of acidification is made up of following component by weight percentage: expanded vermiculite mixture 80% and dilute sulphuric acid 20%; The batching of dilute sulphuric acid is made up of following component by weight percentage: concentration is the vitriol oil 4% and the water 96% of 98%.
3, the batching of mud acidification is made up of following component by weight percentage: the expanded vermiculite 21.2% after mud 78%, acidifying and ferrous sulfate 0.8%; The production method of the mud after acidifying: is stirred in the stirrer that the input of the batching of mud acidification has been operated, spontaneous fermentation is transported in fermentation vat 9 days after stirring, sludge pH after spontaneous fermentation controls 5.5 ~ 7.0, and the mud after spontaneous fermentation process is the mud after acidifying.
4, be soak particle fineness in the gravel attapulgite flower ceramsite input natural pond liquid pool of 1 ~ 3 millimeter, soak time controls at 40 minutes, the gravel attapulgite flower ceramsite taken out after natural pond immersion bubble carries out airing, gravel attapulgite flower ceramsite water content≤14% after airing.
Claims (8)
1. the production method of a vermiculite compression Nutrition Soil, it is characterized in that, (1) vermiculite is compressed in the stirrer of the batching input running of Nutrition Soil and stir, input boil down to vermiculite compression Nutrition Soil flap in tabletting machine after stirring, the gauge control of vermiculite compression Nutrition Soil flap is at 5 ~ 30 millimeters; (2) vermiculite is compressed Nutrition Soil flap to be transported in belt type microwave dry sterilizer and to carry out temperature sterilization and drying, temperature controls at 60 ~ 100 DEG C, time controling at 30 ~ 120 minutes, sterilizing and dried vermiculite compression Nutrition Soil flap water content≤15%; (3) by sterilizing and dried vermiculite compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize vermiculite to compress in Nutrition Soil flap the waste heat of self, proceed sterilizing and drying, after the cooling of vermiculite compression Nutrition Soil flap, be packaged as the finished product of vermiculite compression Nutrition Soil;
The batching that described vermiculite compresses Nutrition Soil is made up of following component by weight percentage: vegetable fibre 1 ~ 10%, pearlstone 0.5 ~ 5% and High hydrophilous resin 0.1 ~ 5% after the gravel attapulgite flower ceramsite 2 ~ 15% after the expanded vermiculite 15 ~ 35% after acidifying, the mud 25 ~ 55% after acidifying, high sticky attapulgite clay 2 ~ 15%, natural pond immersion bubble, the peat 2 ~ 15% after pulverizing, natural pond slag 2 ~ 15%, pulverizing.
2. the production method of vermiculite compression Nutrition Soil according to claim 1, it is characterized in that, the expanded vermiculite batching after acidifying is made up of following component by weight percentage: the expanded vermiculite work in-process 90 ~ 99% after acidifying, quick dissolved sodium silicate 0.1 ~ 5%, polyvinyl alcohol 0.1 ~ 5%, Vltra tears 0.01 ~ 3% and sodium carbonate 0 ~ 3%; The production method of the expanded vermiculite after acidifying: by abrasive dust in the expanded vermiculite batching input grinding machine after acidifying, particle fineness≤0.074 millimeter, the meal after abrasive dust is the expanded vermiculite after acidifying;
The half-finished production method of expanded vermiculite after acidifying: stir in the stirrer (1) input of the batching of expanded vermiculite mixture operated, then dilute sulphuric acid is slowly added in expanded vermiculite mixture carry out acidification; (2), by the expanded vermiculite mixture after acidification, the extruding of input twin rollers is flap, thickness≤3 millimeter of flap; (3) flap is transported to roasting in rotary type stoving oven, roasting time is 1 ~ 3 hour, and maturing temperature controls at 250 ~ 350 DEG C, flap water content≤5% after roasting, and the flap after roasting is the expanded vermiculite work in-process after acidifying;
The batching of expanded vermiculite mixture is made up of following component by weight percentage: expanded vermiculite 68 ~ 92%, attapulgite clay 5 ~ 30% and magnesium oxide 0.1 ~ 3%; The batching of acidification is made up of following component by weight percentage: expanded vermiculite mixture 65 ~ 95% and dilute sulphuric acid 5 ~ 35%; The batching of dilute sulphuric acid is made up of following component by weight percentage: concentration is the vitriol oil 1 ~ 10% and the water 90 ~ 99% of 98%.
3. the production method of vermiculite compression Nutrition Soil according to claim 1, it is characterized in that, the batching of mud acidification is made up of following component by weight percentage: the expanded vermiculite 2 ~ 30% after mud 68 ~ 95%, acidifying and ferrous sulfate 0.01 ~ 5%; The production method of the mud after acidifying: is stirred in the stirrer that the input of the batching of mud acidification has been operated, spontaneous fermentation is transported in fermentation vat 3 ~ 14 days after stirring, sludge pH after spontaneous fermentation controls 5.0 ~ 7.0, and the mud after spontaneous fermentation process is the mud after acidifying.
4. the production method of vermiculite compression Nutrition Soil according to claim 1, it is characterized in that, gravel attapulgite flower ceramsite after the immersion bubble of natural pond: be soak particle fineness in the gravel attapulgite flower ceramsite input natural pond liquid pool of 1 ~ 3 millimeter, soak time controls at 30 ~ 60 minutes, the gravel attapulgite flower ceramsite taken 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 stirrer for mixing, particle diameter controls at 8 ~ 25 millimeters, and particle length controls at 10 ~ 40 millimeters; (2), by the particle input internally heated type revolution roasting in kilns after granulation, maturing temperature controls at 550 ~ 850 DEG C, and roasting time controls at 1 ~ 6 hour; (3) will pulverize as gravel particle in the particle input crusher after roasting and sieve, particle fineness controls at 1 ~ 12 millimeter, is gravel attapulgite flower ceramsite.
5. the production method of vermiculite compression Nutrition Soil according to claim 1, it is characterized in that, high sticky attapulgite clay is the attapulgite clay adopting the complete processing improving viscosity of attapulgite clay to produce, from the attapulgite clay of mining area exploitation, need the weathering through 30 ~ 120 days; Modification processing method is: calculate by weight percentage, gets the attapulgite clay after weathering 94 ~ 98%, evenly adds 2 ~ 6% sodium carbonate, and in common input fermentation vat, add clear water and carry out immersion ageing, soak time is 72 ~ 120 hours; Get the attapulgite clay after immersion, stir in input stirrer, and by the attapulgite clay after stirring, be extruded into thin slice through extrusion machine, its gauge control 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: the attapulgite clay 94 ~ 98% after airing, High hydrophilous resin 0.5 ~ 5% and Mierocrystalline cellulose 0.5 ~ 3%, above-mentioned batching is stirred, inputs in grinding machine and carry out abrasive dust, particle fineness≤0.074 millimeter after stirring;
The detection method of high sticky attapulgite clay: get 28.0g attapulgite clay powder sample, add in the suspension cup of homogenizer, add 372g water again, suspension cup is placed on homogenizer, stir 20 minutes under the rotating speed of 11000 revs/min, to pour in the beaker of 250mL through high-speed stirring sample suspension again, use NDJ-1 type rotational viscosimeter to carry out the viscosity of test suspension liquid, tested viscosity value >=2200mPas is high sticky attapulgite clay.
6. the production method of vermiculite 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 production method of vermiculite compression Nutrition Soil according to claim 1, is characterized in that, particle fineness≤0.5 millimeter of expanded vermiculite, particle fineness≤5 millimeter of attapulgite clay, water content≤15% of attapulgite clay.
8. the production method of vermiculite compression Nutrition Soil according to claim 3, is characterized in that, water content≤90% of mud.
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