CN104119157A - Production method of wollastonite tailing compressed nutrient soil - Google Patents
Production method of wollastonite tailing compressed nutrient soil Download PDFInfo
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- CN104119157A CN104119157A CN201410394300.2A CN201410394300A CN104119157A CN 104119157 A CN104119157 A CN 104119157A CN 201410394300 A CN201410394300 A CN 201410394300A CN 104119157 A CN104119157 A CN 104119157A
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Abstract
The invention discloses a production method of wollastonite tailing compressed nutrient soil. According to the technical scheme, the production method is characterized by comprising the steps of firstly, acidizing wollastonite tailings and sludge; then, stirring ingredients of the wollastonite tailing compressed nutrient soil, compressing, carrying out low-temperature microwave sterilization, and then, packaging to obtain a finished product. The wollastonite tailing compressed nutrient soil is composed of materials such as acidized wollastonite tailings, acidized sludge, polyvinyl alcohol, ferrous sulfate, peat, flower ceramsites, high-viscosity attapulgite clay, biogas slurry, smashed plant fiber, expanded vermiculite, expanded perlite, super absorbent resin and the like. The wollastonite tailing compressed nutrient soil contains a great number of nitrogen, phosphorus, potassium, organic matters and various trace elements, is capable of providing various nutrient elements necessary for growth of plants and reducing hazards of pathogenic bacteria and pests to the plants and is beneficial to the normal growth and development of the plants and the protection of the ecological environment. The production method of the wollastonite tailing compressed nutrient soil is suitable for producing the wollastonite tailing compressed nutrient soil according to different formulas.
Description
Technical field
The present invention relates to Nutrition Soil, be specifically related to a kind of production method of wollastonite mine tailing compression Nutrition Soil.
Background technology
Wollastonite natural type has Skarn-type ore and wollastonite-quartz-calcite type ore two classes conventionally, and the former mainly originates in skarn ore deposits, mineral constituent complexity, the skarn minerals such as normal association quartz, calcite and diopside, garnet.
Wollastonite mine tailing is a kind of alkaline waste producing after the machine silicon limestone flour of dressing-works, pH value 8～9.5.
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 wollastonite mine tailing compression Nutrition Soil is provided.
The production method of wollastonite mine tailing compression Nutrition Soil: first wollastonite mine tailing and mud are carried out to acidification, then the batching of wollastonite mine tailing compression Nutrition Soil is stirred, is packaged as finished product after compression, microwave temperature sterilization.
The materials such as the wollastonite mine tailing of wollastonite mine tailing compression Nutrition Soil after by acidifying, mud, quick dissolved sodium silicate, polyvinyl alcohol, ferrous sulfate, peat, flower ceramsite, high sticky attapulgite clay, natural pond liquid, the natural pond slag after acidifying, vegetable fibre, expanded vermiculite, pearlstone and High hydrophilous resin after pulverizing form.
Wollastonite is a kind of inorganic needle-like mineral, its feature is nontoxic, resistance to chemical attack, thermostability and dimensional stabilizing good, there are glass and pearliness, low water absorption and oil-absorption(number), mechanical property and electrical property are good and have certain strengthening action, the present invention selects the wollastonite mine tailing after pulverizing, particle fineness≤0.5 millimeter of wollastonite mine tailing.
After the acidified processing of wollastonite mine tailing, pH value is controlled at 5.0～7.0, can improve the utilization ratio of wollastonite mine tailing, 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.
It is 98% the vitriol oil that sulfuric acid is selected concentration.
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 wollastonite mine tailing 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 wollastonite mine tailing pH value after acidifying.
Magnesium oxide has the general character of basic oxide, belongs to gelling material, can improve the colloidal property of the wollastonite mine tailing after acidifying.
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 wollastonite mine tailing compression Nutrition Soil: (1) will stir in the stirrer of the batching input running of wollastonite mine tailing compression Nutrition Soil, after stirring, input boil down to wollastonite mine tailing compression Nutrition Soil flap in tabletting machine, the gauge control of wollastonite mine tailing compression Nutrition Soil flap is at 5～30 millimeters; (2) wollastonite mine tailing compression Nutrition Soil flap is transported in belt type microwave dry sterilizer and carries out temperature sterilization with dry, temperature is controlled at 60～100 DEG C, time is controlled at 30～120 minutes, sterilizing and dried wollastonite mine tailing compression Nutrition Soil flap water content≤15%; (3) by sterilizing and dried wollastonite mine tailing compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize in wollastonite mine tailing compression Nutrition Soil flap the waste heat of self, proceed sterilizing and dry, after wollastonite mine tailing compression Nutrition Soil flap is cooling, be packaged as the finished product of wollastonite mine tailing compression Nutrition Soil.
The batching that wollastonite mine tailing 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 wollastonite mine tailing 15～35%, acidifying after acidifying, 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 wollastonite mine tailing after acidifying is made up of following component by weight percentage: wollastonite mine tailing work in-process 90～99%, quick dissolved sodium silicate 0.1～5%, polyvinyl alcohol 0.1～5%, Vltra tears 0.01～3% and sodium carbonate 0～3% after acidifying; The production method of the wollastonite mine tailing after acidifying: by abrasive dust in the wollastonite mine tailing batching input grinding machine after acidifying, particle fineness≤0.074 millimeter, the meal after abrasive dust is the wollastonite mine tailing after acidifying.
The half-finished production method of wollastonite mine tailing after acidifying: stir in the stirrer (1) input of the batching of wollastonite Tailings mixture having been turned round, then dilute sulphuric acid is slowly added and carries out acidification in wollastonite Tailings mixture; (2) by the wollastonite Tailings 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 is controlled at 250～350 DEG C, flap water content≤5% after roasting, and the flap after roasting is the wollastonite mine tailing work in-process after acidifying.
The batching of wollastonite Tailings mixture is made up of following component by weight percentage: wollastonite mine tailing 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: wollastonite Tailings mixture 65～95% and dilute sulphuric acid 5～35%; The batching of dilute sulphuric acid is made up of following component by weight percentage: the vitriol oil 1～10% that concentration is 98% and water 90～99%, the vitriol oil per-cent that concentration is 98% is weight percentage.
3, the batching of mud acidification is made up of following component by weight percentage: the wollastonite mine tailing 2～30% after mud 68～95%, acidifying and ferrous sulfate 0.01～5%; 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 wollastonite mine tailing, pH value is controlled at 5.0～7.0, can improve the utilization ratio of wollastonite mine tailing, not only can bring good economic benefit, environmental benefit and social benefit, and can realize and turning waste into wealth.Wollastonite mine tailing after acidifying has good thixotropy, plasticity-and close-burning feature.
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 wollastonite mine tailing and ferrous sulfate after acidifying 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 wollastonite mine tailing compression Nutrition Soil flap are transported in insulated sterilizing storehouse, utilize waste heat to continue wollastonite mine tailing compression Nutrition Soil to carry out sterilizing and dry, can continue to kill germ and the insects such as excrement colibacillus group that in wollastonite mine tailing 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 wollastonite mine tailing compression Nutrition Soil; Gravel attapulgite flower ceramsite can also play and regulate soil aggregate, coordinate moisture and ventilation property in wollastonite mine tailing 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 wollastonite mine tailing 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 wollastonite mine tailing compression Nutrition Soil: wollastonite mine tailing compression Nutrition Soil is put into water and soak after 5 minutes, the wollastonite mine tailing 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.
Wollastonite mine tailing 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 wollastonite mine tailing 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 wollastonite mine tailing 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.
Wollastonite mine tailing compression Nutrition Soil can also be used to produce the wollastonite mine tailing compression planting brick of different shape.
The various wastes of a large amount of employing in the batching of wollastonite mine tailing 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 wollastonite mine tailing compression Nutrition Soil is applicable to produce the wollastonite mine tailing compression Nutrition Soil of different ingredients.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
1, the production method of wollastonite mine tailing compression Nutrition Soil: (1) will stir in the stirrer of the batching input running of wollastonite mine tailing compression Nutrition Soil, after stirring, input boil down to wollastonite mine tailing compression Nutrition Soil flap in tabletting machine, the gauge control of wollastonite mine tailing compression Nutrition Soil flap is at 22 millimeters; (2) wollastonite mine tailing compression Nutrition Soil flap is transported in belt type microwave dry sterilizer and carries out temperature sterilization with dry, temperature is controlled at 70～90 DEG C, time is controlled at 45 minutes, sterilizing and dried wollastonite mine tailing compression Nutrition Soil flap water content≤15%; (3) by sterilizing and dried wollastonite mine tailing compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize in wollastonite mine tailing compression Nutrition Soil flap the waste heat of self, proceed sterilizing and dry, after wollastonite mine tailing compression Nutrition Soil flap is cooling, be packaged as the finished product of wollastonite mine tailing compression Nutrition Soil.
The batching that wollastonite mine tailing compresses Nutrition Soil is made up of following component by weight percentage: the vegetable fibre 4% after the gravel attapulgite flower ceramsite 5% after the mud 48% after wollastonite mine tailing 24%, acidifying after acidifying, high sticky attapulgite clay 8%, 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 wollastonite mine tailing after acidifying is made up of following component by weight percentage: wollastonite mine tailing work in-process 97%, quick dissolved sodium silicate 1.2%, polyvinyl alcohol 1.1%, Vltra tears 0.7% and sodium carbonate 0% after acidifying; The production method of the wollastonite mine tailing after acidifying: by abrasive dust in the wollastonite mine tailing batching input grinding machine after acidifying, particle fineness≤0.074 millimeter, the meal after abrasive dust is the wollastonite mine tailing after acidifying.
The half-finished production method of wollastonite mine tailing after acidifying: stir in the stirrer (1) input of the batching of wollastonite Tailings mixture having been turned round, then dilute sulphuric acid is slowly added and carries out acidification in wollastonite Tailings mixture; (2) by the wollastonite Tailings 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 is controlled at 300～350 DEG C, flap water content≤5% after roasting, and the flap after roasting is the wollastonite mine tailing work in-process after acidifying.
The batching of wollastonite Tailings mixture is made up of following component by weight percentage: wollastonite mine tailing 74%, attapulgite clay 24.5% and magnesium oxide 1.5%; The batching of acidification is made up of following component by weight percentage: wollastonite Tailings mixture 74% and dilute sulphuric acid 26%; The batching of dilute sulphuric acid is made up of following component by weight percentage: the vitriol oil 5% that concentration is 98% and water 95%.
3, the batching of mud acidification is made up of following component by weight percentage: the wollastonite mine tailing 21.2% after mud 78%, acidifying and ferrous sulfate 0.8%; 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 45 minutes, the gravel attapulgite flower ceramsite taking 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 wollastonite mine tailing compression Nutrition Soil, it is characterized in that, (1) will in the stirrer of the batching input running of wollastonite mine tailing compression Nutrition Soil, stir, after stirring, input boil down to wollastonite mine tailing compression Nutrition Soil flap in tabletting machine, the gauge control of wollastonite mine tailing compression Nutrition Soil flap is at 5～30 millimeters; (2) wollastonite mine tailing compression Nutrition Soil flap is transported in belt type microwave dry sterilizer and carries out temperature sterilization with dry, temperature is controlled at 60～100 DEG C, time is controlled at 30～120 minutes, sterilizing and dried wollastonite mine tailing compression Nutrition Soil flap water content≤15%; (3) by sterilizing and dried wollastonite mine tailing compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize in wollastonite mine tailing compression Nutrition Soil flap the waste heat of self, proceed sterilizing and dry, after wollastonite mine tailing compression Nutrition Soil flap is cooling, be packaged as the finished product of wollastonite mine tailing compression Nutrition Soil;
The batching that described wollastonite mine tailing 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 wollastonite mine tailing 15～35%, acidifying after acidifying, 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 wollastonite mine tailing after acidifying according to claim 1, it is characterized in that, formed by following component by weight percentage: wollastonite mine tailing work in-process 90～99%, quick dissolved sodium silicate 0.1～5%, polyvinyl alcohol 0.1～5%, Vltra tears 0.01～3% and sodium carbonate 0～3% after acidifying; The production method of the wollastonite mine tailing after acidifying: by abrasive dust in the wollastonite mine tailing batching input grinding machine after acidifying, particle fineness≤0.074 millimeter, the meal after abrasive dust is the wollastonite mine tailing after acidifying;
The half-finished production method of wollastonite mine tailing after described acidifying: stir in the stirrer (1) input of the batching of wollastonite Tailings mixture having been turned round, then dilute sulphuric acid is slowly added and carries out acidification in wollastonite Tailings mixture; (2) by the wollastonite Tailings 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 is controlled at 250～350 DEG C, flap water content≤5% after roasting, and the flap after roasting is the wollastonite mine tailing work in-process after acidifying;
The batching of described wollastonite Tailings mixture is made up of following component by weight percentage: wollastonite mine tailing 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: wollastonite Tailings mixture 65～95% and dilute sulphuric acid 5～35%; The batching of dilute sulphuric acid is made up of following component by weight percentage: the vitriol oil 1～10% that concentration is 98% and water 90～99%.
3. the batching of mud acidification according to claim 1, is characterized in that, is made up of by weight percentage: the wollastonite mine tailing 2～30% after mud 68～95%, acidifying and ferrous sulfate 0.01～5% following component; 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. the gravel attapulgite flower ceramsite after natural pond immersion bubble according to claim 1, it is characterized in that, the gravel attapulgite flower ceramsite that is 1～3 millimeter by particle fineness is inputted in the liquid pool of natural pond and is soaked, 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 wollastonite mine tailing 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 wollastonite Tailings mixture according to claim 2, is characterized in that particle fineness≤0.5 millimeter of wollastonite mine tailing, 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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