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33 results about "Mine reclamation" patented technology
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Mine reclamation is the process of restoring land that has been mined to a natural or economically usable state. Although the process of mine reclamation occurs once mining is completed, the planning of mine reclamation activities occurs prior to a mine being permitted or started. Mine reclamation creates useful landscapes that meet a variety of goals ranging from the restoration of productive ecosystems to the creation of industrial and municipal resources. In the United States, mine reclamation is a regular part of modern mining practices. Modern mine reclamation minimizes and mitigates the environmental effects of mining.
Method for restoring mine matrix and greening by utilizing microalgae artificial biological crusts
InactiveCN103004417APerfect technologyChange developmentClimate change adaptationAfforestationEcological environmentAlgae biomass
The invention discloses a method for restoring a mine matrix and greening by utilizing microalgae artificial biological crusts, which comprises the following steps of: A, in a mine reclamation area in which plants are difficult to grow, selecting sand, transporting the sand to a region to be repaired and paving the sand; B, planting grasses to carry out greening, i.e. selecting herbaceous plants growing in a mine to plant; C, carrying out shrub greening, i.e. using salix psammophila, artemisia songarica schrenk, caragana microphylla and astragalus adsurgens which grow in drought-resistant regions, selecting poplar, oleaster, pines and cypress which belong to arbor, and planting shrub such as salix psammophila; D, carrying out artificial crust treatment; E, carrying out watering maintenance; and F, checking the microalgae biological crusts, wherein the step D of carrying out artificial crust treatment comprises a step a of selecting an algae type, a step b of preparing algae culture solution and a step c of culturing algae; and the step c of algae culture comprises the following steps of: (1) primary culture, (2) secondary culture, (3) tertiary culture, (4) culture of a runway-type impeller stirring and circulating culturing pool, (5) biomass collection of the algae and (6) inoculation of the microalgae artificial biological crusts. The method is easy to implement and is convenient to operate; and an effective method is provided for mine restoration, ecological restoration and improvement on the ecological environment.
Owner:武汉昌宝环保工程有限公司
Breeding and rooting method for seedlings
InactiveCN108293557AEasy to synthesizeResolution cycleGrowth substratesCulture mediaPlant rootsCold storage
The invention discloses a breeding and rooting method for seedlings. The method includes the steps of seed optimization, cold storage of seeds, sand storage of the seeds, nutrient substrate preparation, container seedling raising, nutrient bowl transplantation, and field transplantation. According to the method provided by the invention, growth of a plant root system is intervened artificially, sothat the plant root system is developed according to a direction, size and shape of artificial control, and the method creates superior conditions for seedling development and seedling growth after seedlings are transplanted, solves the problems that a traditional seedling raising period is too long, requirements for land conditions are high, transplantation is restricted by seasons, a survival rate is low, and taproots are wound in general container seedling raising, has broad application prospects in urban environmental construction such as afforestation, garden greening and environmental renovation, and especially has obvious advantages for cultivation and transplantation of seedlings used for soil and water conservation and afforestation under harsh environments (mine land reclamation).
Owner:陕西三木城市生态发展有限公司
Plant growing medium produced by using reverse flotation phosphate tailing and preparation method thereof
InactiveCN104109050ALow costImprove fertilityFertilisers by pryogenic processesFertilizer mixturesPhosphateApatite
The invention relates to a plant growing medium produced by using reverse flotation phosphate tailing, which is used on a rock slope and comprises active phosphate tailing, soil and water, wherein active phosphate tailing is calcinined by reverse flotation phosphate tailing, the mass ratio of the active phosphate tailing to soil is 1:3-3:1, water mass accounts for 20-25% of total amount of active phosphate tailing and soil, the active phosphate tailing, soil and water are uniformly stirred and aged, and then are injected on the rock slope to obtain the plant growing medium. According to the invention, calcining is carried out so that phase composition of the reverse flotation phosphate tailing is changed; hydrated silicate composed of magnesium and calcium, which is more difficult than that of apatite, so that P2O5 in hydrated silicate can be directly absorbed by plant. The processed phosphate tailing is mixed with soil to obtain the plant growing medium. The plant growing medium can fully use the phosphate tailing, and has wide application prospect in mine reclamation and local agriculture production.
Owner:WUHAN INSTITUTE OF TECHNOLOGY +1
Indoor spectral layered measuring method for poisonous and harmful elements at mine reclamation area
InactiveCN104596943ADetermination of dynamicsEfficient determinationColor/spectral properties measurementsModel sampleSpectral bands
The invention discloses an indoor spectral layered measuring method of poisonous and harmful elements at mine reclamation area. The method comprises the following steps: collecting a modeling sample of the mine reclamation area soil, collecting the high-spectrum data of the modeling sample in a darkroom, pre-processing the high-spectrum data of the modeling sample, measuring the reference value of poisonous and harmful elements of the modeling sample, selecting the stress sensitive spectral bands with poisonous and harmful elements, building the model, evaluating the model stability and the predictive ability and using the model. Large-area rapid measurement for the mine reclamation area soil can be achieved, and the poisonous and harmful elements of the mine reclamation area soil different in depth can be quickly measured in the room due to the layered detection character of the method, the poisonous and harmful elements of the soil can be measured in a dynamic, quick, large-size and layered mode and effective data is offered for evaluating the ecological security of grains.
Owner:CHINA UNIV OF MINING & TECH
Screening method for replacing surface soil of strip mine reclamation
InactiveCN104082056AEasy to operateAvoid formingHorticulture methodsSoil scienceEcological environment
The invention relates to a screening method for replacing surface soil of strip mine reclamation and belongs to the technical field of land reclamation and ecological reconstruction and the field of ecological environment materials. The screening method includes the steps that according to detailed geological and occurrence conditions of a stripped overburden rock-soil layer of a strip mine, firstly, the possible soil layers for replacing surface soil are screened out primarily through analyzing geology and rock-soil parameters of all overburden rock-soil layers; then, through analyzing physical, chemical, biological and environmental characteristics of all the soil layers, the soil layer is finally screened out, wherein the soil layer is close to the surface soil in characteristic, the basic soil properties are good, the rate of emergence is high, then a soil conditioner is selected to be mixed with the material for replacing the surface soil to serve as replacing surface soil. According to the replacing surface soil, solid waste treating and strip mine waste dump reclamation can be organically combined, the dual purposes of reducing solid waste and finishing waste dump reclamation are achieved, the solid waste is effectively utilized, the ecological environment is improved, and social, economical and environmental benefits are high.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Soil system reconstruction method for reclaiming abandoned mines to obtain forest lands
The invention provides a soil system reconstruction method for reclaiming abandoned mines to obtain forest lands. The soil system reconstruction method is characterized by comprising steps of plowingsurface hardened soil in the mines by the depths of 5-20 cm, and collecting hardened soil; covering the mines with stabilization sludge with the thickness of 20-25 cm; covering the mines with loam with the thickness of 20-25 cm; covering the mines with the collected hardened soil with the thickness of 10-15 cm; covering the mines with stabilization sludge with the thickness of 10-15 cm; plowing built layered soil by the depth of 20-25 cm; planting vegetation in plowed soil substrates. The soil system reconstruction method has the advantages that soil replacement soil sources can be saved, existing hardened top soil in the mines and the urban sludge can be sufficiently utilized, and additional environmental secondary disruption can be reduced while the soil replacement soil sources are saved; soil architecture is constructed, and generation of soil ecosystems can be accelerated; the urban sludge is recycled, and the soil system reconstruction method is free of secondary pollution.
Owner:DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
Biological organic slow-release fertilizer, preparation method and application thereof in soil remediation
InactiveCN108341721AAchieve reuseSmall molecular weightBio-organic fraction processingAlkali orthophosphate fertiliserHydrolysisFermentation
The invention relates to a biological organic slow-release fertilizer, a preparation method and application thereof in soil remediation, and belongs to the technical field of biological organic fertilizers. The slow-release fertilizer is prepared from blue algae as a main raw material; after hydrolysis and fermentation, the blue algae are further subjected to polymerization reaction with organic high polymers, and then the slow-release organic fertilizer with a through grid spatial structure can be formed; meanwhile, microorganism are introduced into the fertilizer, a relatively large amount of growth spaces can be provided for microorganisms through the structure of the slow-release fertilizer, then on one hand, nutrient components metabolized from the microorganisms can be enriched, andon the other hand, the slow-release function effect of the fertilizer can be improved; the biological organic slow-release fertilizer provided by the invention has a relatively good mine reclamation soil remediation effect, the content of organic carbon of reclamation soil can be effectively increased, and the soil aggregation effect can be improved.
Owner:南京霄祥工程技术有限公司
Coal gangue filling reclamation soil humidity monitoring method based on GNSS-R technology
ActiveCN111027230AGuaranteed outputSufficient signal sourceSolid waste managementDesign optimisation/simulationFrequency spectrumDynamic monitoring
The invention discloses a coal gangue filling reclamation soil humidity monitoring method based on a GNSS-R technology. The method comprises the specific steps that 1, building a geodetic survey typeGNSS receiver and arranging a portable soil moisture tachometer sensor; 2, acquiring GNSS signal-to-noise ratio (SNR) and soil humidity data; 3, processing data; 4, extracting the frequency, the phaseand the amplitude of the preprocessed data by using methods such as Lomb-Scargle spectral analysis and least square fitting; and 5, finally, establishing a function relationship between the frequencyand the humidity, and inverting the soil humidity according to the function relationship. Compared with a traditional soil humidity monitoring method, the method has the advantages of being low in cost, sufficient in signal source and capable of achieving all-weather and all-time detection; a rapid dynamic monitoring method is provided for monitoring the soil humidity of the mine reclamation land, a technical means is provided for guaranteeing the crop yield of the reclamation land, and development and application of the GNSS-R technology in the reclamation land are promoted.
Owner:ANHUI UNIV OF SCI & TECH +1
Titanium placer mineral processing and tailing fast reclamation method
The invention discloses a titanium placer mineral processing and tailing fast reclamation method. According to the method, titanium placer is subjected to slurry mixing after preliminary screening, then, high-magnet desliming is carried out after fine screening, tailing pulp and coarse titanium concentrate with the TiO2 content being greater than 28 percent are obtained, the tailing pulp is subjected to concentration dehydration, dehydrated tailings with the moisture content being 10 to 15 percent are obtained, and the dehydrated tailings are subjected to mine reclamation in a flat pavement mode or a step mode. The method provided by the invention has the advantages that the TiO2 content in the dehydrated tailings is similar to that of the traditional gravity and magnetic associated process, the titanium mining and dressing recovery rate can be ensured, the requirements of resource comprehensive utilization are reached, the simultaneous mining and the simultaneous reclamation can be realized, the goal of fast reclamation is achieved, the problem of high transportation cost of tailings or tailing pulp is solved, and the reclamation cost is greatly reduced. Any chemical reagent is not added into the titanium placer mining and dressing processes, no pollution is cased on soil, the tailings are adopted for reclamation, the soil does not need to be improved, grass and plants can be directly planted for reclamation, the water consumption by the method is low, and the method is particularly suitable for the mining of titanium placer mine lack of water resources.
Owner:YUNNAN COPPER GRP TITANIUM CO LTD
Composite improvement method for reclamation soil of semi-arid mining area
InactiveCN111570505AImprove physical and chemical propertiesImprove biological activityContaminated soil reclamationSoil-working methodsTrichoderma sp.Total nitrogen
The invention discloses a composite improvement method for reclamation soil of a semi-arid mining area. The method comprises green manure, a microbial mixed inoculant and a water-retaining agent, wherein the green manure is alfalfa, and the microbial mixed inoculant is formed by mixing trichoderma, bacillus subtilis and bacillus mucilaginosus according to the proportion of 1: 2.5: 2.5. Harvested alfalfa is cut up, dried in the shade and mixed with the microbial mixed inoculant according to a certain proportion to obtain a biological fertilizer; then strip-shaped turning and pressing are conducted on reclamation soil of the semi-arid mining area, and a biological fertilizer layer is formed; a water-retaining layer is constructed on the biological fertilizer layer, so that the function of the biological fertilizer can be promoted by the water-retaining agent, the physical and chemical properties of the soil are improved by the water-retaining agent and the biological fertilizer which aresynergistic, the biological activity of the soil is improved, the water retention rate of the soil and the contents of organic matters and total nitrogen are effectively improved, the phosphorus andpotassium activation of soil fixation is promoted, and the construction of organic and efficient high-quality soil is quickly realized for mine reclamation land; meanwhile, the method has the advantages of convenience in material taking, low cost, simplicity and feasibility in operation, no ecological risk and the like.
Owner:LIAONING TECHNICAL UNIVERSITY
Structures constructed using coal combustion materials
ActiveUS20180050965A1Reduce leachingReduce penetrationSolid waste managementWallsWater storageCombustion
Beneficial use structures are disclosed that include coal combustion residuals (“CCR”) mixed with water and a binder to form a structural material and adapted to be compacted for use in the formation of the beneficial use structure. Various structures having beneficial uses described, including survival bunkers, composting pits, mine reclamation encapsulation and carbon sequestration facilities, water storage facilities, compressed air storage facilities, carbon sequestration / mineral carbonation facilities and a pumped hydroelectric facility adapted for use with a lock system of a waterway.
Owner:GO TEAM CCR LLC
Method for improving mine soil matrix
PendingCN113079735AImproved substrateIncrease organic matterSewage/sludge fertilisersAmmonium salt fertilisersSoil scienceMicrobial agent
The invention discloses a method for improving the mine soil matrix. The method comprises the following steps: leveling the soil in a mine reclamation area through a machine; digging a plurality of ditches with the depth of 20-25cm in the soil surface of the reclamation area at the spacing of 35-40cm; applying a soil amendment to the ditches according to the amount of 170-180g / m<2>; applying a microbial agent to the surface layer of the soil amendment according to the amount of 20-25g / m<2>; and covering with surface soil and sowing vegetation on the surface soil. According to the method, the industrial waste source amendment and the microbial agent are applied to the soil, so that the content of organic matters, total nitrogen, alkali-hydrolyzable nitrogen, rapidly available potassium and available phosphorus in the soil of the mine reclamation area can be effectively increased, the purpose of improving the soil matrix is achieved, and ecological greening of the mine soil is achieved.
Owner:LIAONING TECHNICAL UNIVERSITY
Slope protection base material adopting phosphorous gypsum and preparation method thereof
The invention discloses a slope protection base material adopting phosphorous gypsum and a preparation method thereof, and relates to the technical field of comprehensive utilization of phosphorus chemical by-products. The method comprises the following steps: using slag disposal pit phosphorous gypsum as a raw material, adding a crystal modifier, adopting low-temperature dry method to directly prepare alpha high-strength gypsum, ensuring that 2h wet flexural strength of the alpha high-strength gypsum is higher than 8Mpa, the 3d compressive strength is higher than 50Mpa, and the alpha 50 degree in JC / T2038-2010 is met. The slope protection base material has the advantages that the alpha gypsum, soil and water are mixed according to certain ratio, grass seeds are added, the materials are uniformly mixed and are sprayed to a mine land reclamation slope, the slope protection base material has good slope protection effect while performing greening, and is low in cost. A solidified layer israpidly formed after the adding of the alpha gypsum, water leakage is prevented, the slope protection base material has good water retention effect, meanwhile the alpha gypsum contains plant nutrientelements, such as phosphorus, fluorine and silicon, the added crystal modifier has certain fertilizer efficiency effect in the soil, and experimental comparison shows that growing plant is high in greening rate after solidification through the adding of the alpha gypsum.
Owner:YUNNAN PHOSPHATE CHEM GROUP CORP
Method for storing and lifting water at bottom of subsidence area in mine reclamation
The invention discloses a method for storing and lifting water at the bottom of a subsidence area in mine reclamation. The method comprises the following steps of: selecting waste ore with the diameter of 20-50cm for stuffing by utilizing a groove-shaped structure of a crack-free subsidence water pit at the bottom of an open-air mining pit, forming a waste ore layer which vertically penetrates through the subsidence water pit for stuffing in the middle of the subsidence water pit, wherein the distance between the waste ore layer and the adjacent ground is 40-60 cm, and at the moment, two water storage pits are formed in the two sides of the subsidence pit. According to the method for storing and lifting water at the bottom of the subsidence area in mine reclamation, a rock block is placed in the middle of an original subsidence area pit to serve as a base layer, a water storage well consisting of an external pipe is reserved in the subsidence area pit, an inner pipe is arranged in the water storage well, small gravels are stuffed in the water storage well to achieve filtering, and a water pump is effectively prevented from being blocked; and besides, an upper laying layer is arranged at the top of a waste ore stuffing layer, land reclamation planting can be achieved through multi-layer laying design, the water storage pits in the two sides serve as irrigation water sources for planting, planting is facilitated, the drainage and water storage capacity of the two sides is higher, and the effect is more outstanding.
Owner:江苏省中成建设工程总公司
Substrate improvement of red mud container yard vegetation repairing
ActiveCN100522400CMeet growthQuick implementationContaminated soil reclamationBuilding constructionsVegetationRed mud
The invention relates to a matrix improvement method for vegetation restoration of red mud yard, which is characterized in that furfural slag is added to red mud, and the volume proportion percentage of added furfural slag is: 50-70% of red mud and 30-50% of furfural slag. The field planting test proves that the improved red mud can satisfy the growth of many kinds of plants, such as tall fescue, elymus, dogbud root, ryegrass, sandawang, alfalfa, etc., and has been applied to the red mud pile Field dam slope protection greening. The improved red mud can also be used as landscaping soil for mine reclamation or landfill.
Owner:BEIJING GENERAL RES INST OF MINING & METALLURGY +1
Watering machine for mine reclamation
ActiveCN110663516AUniform moving speedReduce workloadWatering devicesCultivating equipmentsAgricultural scienceWater efficiency
The invention relates to watering machines, in particular to a watering machine for mine reclamation. According to the technical scheme, the watering machine comprises mounting racks, handles, electric wheels, an interval adjusting mechanism, slide plates, fastening bolts, a V-shaped support, slide rails, sliders, connecting rods, a connection rod, first springs and the like, wherein the two mounting racks are arranged in a front-back symmetry manner, the handles are connected to the tops of the right sides of the mounting racks, the electric wheels are mounted on the left and right sides of the bottoms of the mounting racks, the interval adjusting mechanism is arranged between the two mounting racks, and the slide plates are slidably connected to the middles of the mounting racks. The watering machine has the advantages that reclamation trees can be evenly watered, and watering efficiency can be increased; by the interval adjusting mechanism, the watering machine can water trees of different line spacing, and the practicality and flexibility of the watering machine are increased.
Owner:JIANGXI UNIV OF SCI & TECH
Structures constructed using coal combustion materials
ActiveUS9988317B2Improve facilitiesReduce leachingSolid waste managementLighting and heating apparatusWater storageCombustion
Owner:GO TEAM CCR LLC
Novel sandstone area mine reclamation seepage-control growth promotion arrangement structure
PendingCN110419287AImprove securityNo harmOther chemical processesFabaceae cultivationControl layerVegetation cover
The invention provides a novel sandstone area mine reclamation seepage-control growth promotion technology and arrangement structure. Firstly, a seepage-control layer is arranged in a soil covering layer of a mine reclamation area, namely, a sandstone saprolite layer is backfilled with 10cm-40cm sandstone saprolite which is leveled and compacted, seepage-control composite solution with the concentration of 5%-10% is sprayed, the seepage-control composite solution and soil are solidified to form the 1cm-5cm seepage-control layer, and backfilling of 40cm-110cm sandstone saprolite is continued after the seepage-control layer is formed. Secondly, dominant microbial strains suitable for local environments are introduced into the soil covering layer, soil formation of sandstones is promoted by microbes, soil structures are improved, and plant growth is promoted. Finally, shrubs such as Chinese pines and wild apricots suitable for the local environments are planted, and herbaceous plants suchas alfalfa and astragalus adsurgens palls are spread. The problems of serious seepage, low vegetation survival rate, low vegetation cover area and the like of a mine reclamation area at the present stage are solved.
Owner:江苏梦联桥科技有限公司 +1
Ecological restoration material and application thereof
InactiveCN114642148AImprove hold stabilityReduce water and wind erosionHops/wine cultivationGrowth substratesAdhesiveGrassland
The invention discloses an ecological restoration material and application thereof. The ecological restoration material comprises a net-shaped base surface soil working layer, an ecological restoration plant growth layer and an upper surface covering net, wherein the net-shaped base surface soil working layer is formed by stretching and laying a net-shaped honeycomb paper layer on a to-be-repaired layer, and enabling the honeycomb paper layer and the to-be-repaired layer to be mutually solidified through an adhesive; the honeycomb paper layer is filled with a solid material required by plant growth to form an ecological restoration plant growth layer; honeycomb paper is stretched and laid on the ecological restoration plant growth layer to form an upper surface covering net, and the upper surface covering net and the ecological restoration plant growth layer are bonded through an adhesive. The ecological restoration material is suitable for ecological restoration of a black soil beach degraded environment, land desertification, grassland degraded soil, slope water and soil loss and an engineering construction wound surface in a cold region, desert greening or mine reclamation ecological reconstruction. According to the ecological restoration material, the restoration layer and the wound surface or the soil surface can form through connection, and rapid ecological restoration is achieved.
Owner:中岭环保有限公司
Method for measuring restoring force of ecological system in strip mine reclamation area
ActiveCN113408950AThe method is scientific and reasonableThe evaluation result is accurateResourcesEvaluation resultEnvironmental resource management
The invention discloses a method for measuring the restoring force of an ecological system in a strip mine reclamation area. The method comprises the following steps: establishing a hierarchical structure model for measuring the restoring force of the ecological system in the strip mine reclamation area; constructing a judgment matrix to obtain a weight vector of the judgment matrix, and calculating the weight of each index in the measured value of the ecosystem restoring force of the strip mine reclamation area; performing relative value operation on the actually measured data of each index in the index layer in the reclamation area and the undisturbed background area, and determining the score of each index in the index layer; and finally, measuring and calculating the ecosystem restoring force of the strip mine reclamation area. According to the method, the weight of each index in the measured value of the ecosystem restoring force of the strip mine reclamation area is calculated through a hierarchical structure model; and relative value operation is carried out on the measured data of each index in the reclamation area and the undisturbed background area to determine the score of each index in the index layer, so that the evaluation result is more accurate and comprehensive, and a theoretical reference can be provided for ecological restoration effect evaluation.
Owner:CHNA ENERGY INVESTMENT CORP LTD +2
Red mud and acidic electrolytic manganese residue synergistic soil treatment and land reclamation method
PendingCN113455133AImprove arabilitySolve the contradiction of insufficient land source for reclamationFlowers cultivationFabaceae cultivationRevegetationSoil treatment
The invention discloses a red mud and acidic electrolytic manganese residue synergistic soil treatment and land reclamation method, and belongs to the technical field of ecological restoration. According to the method, after red mud and electrolytic manganese residues are mixed, stacked, turned and mixed uniformly, and subjected to dry and wet alternate alkali reduction, the mixture is conveyed to a mine pit for landfill and reclamation, a certain amount of compound fertilizer and organic fertilizer are uniformly spread on the surface of a mine reclamation area and mixed uniformly, green manure plants are planted firstly, and then tolerant arbors, shrubs and herbaceous plants are screened and planted. According to the method, the problem that plant growth matrixes are deficient in the mine vegetation recovery process can be effectively solved in a targeted mode, nutrient elements including organic matter, ammonium sulfate, ammonia nitrogen and the like in acid electrolytic manganese residues are fully utilized so as to increase fertility, the red mud and the acid electrolytic manganese residues are co-treated to accelerate soil transformation, ecological recovery is accelerated, a huge amount of piled red mud is digested, the overhanging environmental risk is eliminated, the ecological environment is protected, land resources are regenerated as well, and the ecological economic benefits are increased.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY
Water storage method at the bottom of open pit or subsidence area in mine reclamation
Owner:建平盛德日新矿业有限公司
A kind of soil conditioner and preparation method thereof
InactiveCN104099100BLow costEasy to useAgriculture tools and machinesOrganic fertilisersSoil conditionerReverse flotation
The invention relates to a soil conditioner and a preparation method thereof. The soil conditioner is prepared through the following steps: crushing and sieving reverse flotation phosphorus mineral tailings calcinated at the temperature of 800-1200 DEG C and obtaining active phosphorus mineral tailings with particle diameters less than or equal to 50 mesh obtained through autoclaving curing processing, namely, obtaining the soil conditioner; the preparation method comprises the following steps: the reverse flotation phosphorus mineral tailings are calcinated at the temperature of 800-1200 DEG C and then crushed and sieved; then the crushed and sieved reverse flotation phosphorus mineral tailings are subjected to autoclaving curing under the condition of 170-180 DEG C, 0.8-1.0 MPa for 3-5 h to obtain the soil conditioner. The soil conditioner prepared by the invention has the advantages that the fertilizing value is high and the soil conditioner can be used in mine reclamation and soil amelioration in phosphorus deficient areas and has wider application prospect and avoids secondary pollution.
Owner:WUHAN INSTITUTE OF TECHNOLOGY +1
Watering machine for mine reclamation
ActiveCN110663516BSmooth operation distance adjustmentImprove firm performanceWatering devicesCultivating equipmentsAgricultural scienceAgricultural engineering
Owner:JIANGXI UNIV OF SCI & TECH
Method for making tillage layer soil of re-cultivation in mine with red mud
InactiveCN1231304CSolve pollutionReduce the concentration of active aluminum ionsSolid waste disposalTemperature controlRed mud
The invention discloses a new application of red mud: making plow layer soil for mine reclamation, and a method for making plow layer soil for mine reclamation with red mud: using red mud as a matrix, adding straw, making The waste residue liquid of the sugar industry is used as ingredients. The dosage range of red mud and ingredients is: 50% to 85% of red mud and 15% to 50% of ingredients; keep the total moisture content in the mixture at 30% to 60%; the temperature of the mixture is controlled at Lower than 100°C; after the mixture is airtight, fermented and decomposed, the reclaimed plow layer soil rich in minerals and organic matter, loose in structure, and with a pH value of 5.5 to 8.5 can be obtained. This method has a wide source of raw materials, simple production process, and low cost. It can not only solve the pollution problem of red mud, but also provide high-quality reclaimed plow layer soil sources for mines, realize waste utilization, treat waste with waste, and turn waste into treasure. the goal of.
Owner:桂林矿产地质研究院
Method and device for the treatment and recycling of copper-containing acidic wastewater from mines
ActiveCN107601779BReduce adverse effectsHigh technical feasibilityWaste water treatment from quariesWater contaminantsSludgeRaffinate
The invention relates to a method and a device for treating and recycling copper-containing acid wastewater of mines. The method comprises the following steps: mixing two wastewaters, namely copper pit water and raffinate, in a certain volume proportion, so as to form mixed acid wastewater; carrying out fractional precipitation on valuable heavy metals in the mixed acid wastewater by virtue of a combined medicament, so as to reduce neutralizing residue and recycle copper; recycling copper in the acid wastewater through the synergic effect generated in a metabolic process of chemical precipitates and sulfate reducing bacteria; and preparing a compound fertilizer from organic sludge generated by virtue of a biochemical method, and reusing the compound fertilizer in the rehabilitation and afforesting of the mines. According to the device for implementing the method, hydrogen sulfide circulating and absorbing equipment is additionally arranged, a reaction device is optimized, and combinedfillers of a bioreactor are optimized, so that the conversion efficiency of sulfate reducing bacteria to SO4<2-> is increased, and the repeated cyclic utilization of hydrogen sulfide is realized. A process adopted in the method is environment-friendly and has good universality to working conditions of the mines, so that the method has the advantages that the recycling rate of copper in the acid wastewater is more than or equal to 92%, the reduction amount of the neutralizing residue is more than or equal to 70%, the storage capacity pressure of tailings can be effectively reduced, and the like.
Owner:ZIJIN MINING GROUP +1
Sandy soil-clay mixing method suitable for plant growth of strip mine dump
PendingCN113940163AReduce economic investmentImprove land use efficiencyMaterial analysis by observing effect on chemical indicatorChemical analysis using titrationAridGrowth plant
The invention belongs to the technical field of ecological management, and particularly relates to a sandy soil-clay mixing method suitable for plant growth of a strip mine dump. According to the method, by measuring the correlation coefficient between the growth index of the plant and the root soil enzyme, the growth index having significant correlation with the root soil enzyme is obtained as the optimal growth index, and the corresponding mixing ratio under the optimal growth condition is screened from the growth conditions of the growth index under the sandy soil-clay mixing ratios with different volume ratios, so as to determine the sandy soil-clay mixing ratio suitable for the plant growth in the strip mine dump in the arid or semi-arid desert area. The mixing method can be used for guiding the strip mine dump to carry out scientific dumping according to the mixing ratio, so that the economic investment of coal mine reclamation can be reduced, the land utilization efficiency of coal mine reclamation can be improved, and the practical value is good.
Owner:国家能源集团陕西神延煤炭有限责任公司
A plant substrate produced by reverse flotation phosphorus tailings and its preparation method
InactiveCN104109050BLow costImprove fertilityFertilisers by pryogenic processesFertilizer mixturesApatitePhosphate
The invention relates to a plant growing medium produced by using reverse flotation phosphate tailing, which is used on a rock slope and comprises active phosphate tailing, soil and water, wherein active phosphate tailing is calcinined by reverse flotation phosphate tailing, the mass ratio of the active phosphate tailing to soil is 1:3-3:1, water mass accounts for 20-25% of total amount of active phosphate tailing and soil, the active phosphate tailing, soil and water are uniformly stirred and aged, and then are injected on the rock slope to obtain the plant growing medium. According to the invention, calcining is carried out so that phase composition of the reverse flotation phosphate tailing is changed; hydrated silicate composed of magnesium and calcium, which is more difficult than that of apatite, so that P2O5 in hydrated silicate can be directly absorbed by plant. The processed phosphate tailing is mixed with soil to obtain the plant growing medium. The plant growing medium can fully use the phosphate tailing, and has wide application prospect in mine reclamation and local agriculture production.
Owner:WUHAN INSTITUTE OF TECHNOLOGY +1
Binary planting matrix structure for mine reclamation in arid areas and construction method of binary planting matrix structure
InactiveCN111919679AEasy accessImprove water and moisture retention capacityCultivating equipmentsPlant cultivationWater storageSoil science
The present invention discloses a binary planting matrix structure for mine reclamation in arid areas. The binary planting matrix structure for mine reclamation in the arid areas comprises a bottom layer of ecological geotextile laid on the mine matrix, a 70-80 cm thick water storage cavity layer spread on the bottom layer of the ecological geotextile, a middle layer of ecological geotextile laidon the water storage cavity layer and a 30-50 cm thick planting layer laid on the middle layer of ecological geotextile. A construction method is simple, raw materials are easy to obtain, cost is low,and the construction method has better economic and social benefits. By covering of the ecological geotextile and adding super absorbent resin, water-holding and moisture-preserving capacity of the matrix in the mining area under harsh environmental conditions can be improved, water storage capacity of the matrix in the mining area is greatly improved and survival rate of plants in the mining area is improved.
Owner:河南省地质环境规划设计院有限公司 +1
Indoor spectral stratified measurement method for heavy metal elements in closed mine reclamation site
PendingCN113984678ADetermination of dynamicsEfficient determinationPreparing sample for investigationDesign optimisation/simulationMathematical modelData acquisition
The invention discloses an indoor spectral stratified measurement method for heavy metal elements in a closed mine reclamation site. The method comprises the following steps: S1, constructing a heavy metal element spatial distribution analysis model of a mine reclamation site, analyzing heavy metals in soil by adopting a multivariate stepwise regression model in geospatial regression, and analyzing the content of heavy metals in the soil by adopting a least square reduction model; S2, carrying out GIS gridding on the mine reclamation site, and sampling soil of multiple depths in each gridding area at the same time; and S3, carrying out hyperspectral data acquisition. According to the method, a self-built mathematical model and a computer system are adopted, sampling point detection data are utilized, multi-target geochemical survey and remote sensing data obtained from the outside are combined, and spatial distribution characteristics of detected heavy metal elements are analyzed through multiple stepwise regression and a least square regression model; and an accurate spatial distribution characteristic result of the heavy metal elements is obtained, so that treatment and utilization of the reclamation soil in the mining area by people are facilitated.
Owner:SHAANXI COAL & CHEM TECH INST
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