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113 results about "Natural material" patented technology

A natural material is | access-date = 2 May 2018 }}</ref> Minerals and the metals that can be extracted from them (without further modification) are also considered to belong into this category. Natural materials are used as building materials and clothing.

Environment-friendly high-performance cementing material based on fly ash and slag and preparation method thereof

InactiveCN120208569ASlagHydrolysis
The invention relates to the technical field of cementing materials, in particular to an environment-friendly high-performance cementing material based on fly ash and slag and a preparation method of the environment-friendly high-performance cementing material. The environment-friendly high-performance cementing material comprises the following raw materials in parts by weight: 80-100 parts of fly ash, 16-20 parts of slag, 10-14 parts of desulfurized gypsum, 4-6 parts of gasified slag and 0.6-0.8 part of a composite activator, according to the invention, the gasified slag is pretreated to form a rich pore structure, the specific surface area of the gasified slag is increased, then the desulfurized gypsum and the 3-aminopropyltriethoxysilane are combined to carry out hydrolytic condensation reaction, and through the bridging effect of the silane coupling agent, the specific surface area of the gasified slag is increased; the interface bonding force between the desulfurized gypsum and other cementing materials is remarkably enhanced, so that the strength performance of the cementing material is improved, other natural materials are replaced with solid waste, the production cost of the cementing material can be effectively reduced, meanwhile, accumulation of waste is effectively reduced, cyclic utilization of resources is achieved, and natural resources are protected.
Owner:YULIN HAOXING BUILDING MATERIALS CO LTD

Natural material mixing and proportioning device

The utility model discloses a natural material mixing and proportioning device, which relates to the technical field of material mixing and comprises a base, the top of the base is fixedly connected with a rectangular pipe, the top of the rear side of the rectangular pipe is provided with a feeding mechanism, the rectangular pipe is internally provided with a stirring mechanism, and two sides of the rectangular pipe are respectively provided with a circulating mechanism. The circulating mechanism comprises a circular pipe, a material returning pipe and a material discharging pipe are fixedly connected between the circular pipe and the rectangular pipe, a spiral rod is movably connected to the interior of the circular pipe through a bearing, and a second motor is fixedly connected to the top of the circular pipe. After multiple natural materials are introduced into the rectangular pipe in proportion through the feeding mechanism, the stirring mechanism can preliminarily stir the falling raw materials, the stirred mixed materials fall onto the ridge-shaped plate, flow towards the two sides, enter the two circulating mechanisms and are introduced into the rectangular pipe again to be stirred by the stirring mechanism, and circulation is repeated for multiple times; various natural raw materials can be quickly and sufficiently mixed together.
Owner:YIWU INDAL & COMMERICAL COLLEGE

Modified asphalt and application thereof

The invention relates to the field of building materials, discloses modified asphalt and application thereof, and provides a high, medium and low fiber modified asphalt scheme aiming at the problems that traditional asphalt is insufficient in high-temperature stability and easy to crack at low temperature. According to the high-fiber modified asphalt, PBO fibers, a KH-550 silane coupling agent and 70 # asphalt are used as raw materials, and a high-temperature-resistant rigid framework is formed through surface modification and gradient dispersion processes. The medium fiber modified asphalt is compounded with basalt and polyester fibers to construct a three-dimensional anti-cracking network, so that the cost and the performance are balanced. The low-fiber modified asphalt is prepared from natural materials such as bamboo fibers and sugarcane fibers and is combined with a PLA bio-based plasticizer, and the ductility at the temperature of 10 DEG C below zero is larger than or equal to 30 cm. Through fiber surface treatment, silane coupling and bio-based plastification, the compatibility problem is solved, precise matching of high performance, high cost performance and low carbonization is achieved, and the interface bonding strength is improved by 40% or above.
Owner:龙陵鑫福再生资源利用有限公司

Automotive trim composite material

The utility model discloses an automotive trim composite material, comprising: a stone layer made of a natural or nature-imitating material with lines, the thickness of the stone layer being 0.1-3 mm; the protective layer is a PV (Polyvinyl) or UV (Ultraviolet) coating coated on the upper surface of the stone layer, and the thickness of the coating is 0.002-1.2 mm; and the injection molding layer is arranged on the lower surface of the stone layer so as to form the basic thickness and strength of the composite material. The automotive trim composite material has the advantage of low cost; and moreover, the manufacturing process is simple, and personalized aesthetic requirements on the automotive trim can be quickly met.
Owner:DONGGUAN HONGYAO TECH CO LTD

Green and environment-friendly building prefabricated wallboard

The utility model discloses an environment-friendly building prefabricated wallboard which comprises a wallboard body and exterior structures arranged on the two sides of the wallboard body, the wallboard body is provided with a gypsum wall core, perlite layers are arranged on the two sides of the gypsum wall core respectively, gypsum boards are arranged on the outer sides of the perlite layers, ceramsite layers are arranged on the outer sides of the gypsum boards, and the ceramsite layers are arranged on the outer sides of the gypsum boards. And a glass wool layer is arranged on the outer side of the ceramsite layer. The wallboard body adopts the gypsum wall core, the gypsum wall core is light in weight, non-toxic and pollution-free, the perlite layers are arranged on the two sides of the gypsum wall core, the heat preservation performance and the wall hardness of the wallboard body can be improved, and the ceramsite layer arranged outside the gypsum board has the functions of heat preservation, heat insulation and high temperature resistance. The glass wool layer is arranged on the outer side of the ceramsite layer, the good sound insulation effect is achieved, the glass wool layer is adopted for the exterior structure, and the glass wool layer, the ceramsite layer, the gypsum wall core and the perlite are all natural materials and are environmentally friendly.
Owner:CHINA CONSTR SIXTH ENG BUREAU INDL EQUIP INSTALLATION CO LTD

Mobile phone battery cover structure based on composite cloth coating and preparation method thereof

The invention discloses a mobile phone battery cover structure based on a composite cloth coating and a preparation method of the mobile phone battery cover structure, and the mobile phone battery cover structure comprises a base material layer, an attaching adhesive layer, a cloth layer, a PU functional layer and a surface treatment layer which are sequentially laminated and combined. And precise simulation of a natural material is synchronously realized in visual and tactile dimensions. The polyurethane layer autonomously forms a microscopic topological structure under curing at a specific temperature, so that scattering distortion is avoided when light penetrates through the woven texture of the fabric, and a clear and three-dimensional fabric pattern is presented; and the synchronously generated surface micro-convex points are regulated and controlled through precise friction, so that the battery cover leather is endowed with soft damping touch feeling. The design breaks through an inherent frame of separation of a visual layer and a tactile layer in a traditional transfer printing process, and unification of cloth texture light transmission performance and biological skin feeling feedback is achieved on a smart phone component for the first time.
Owner:ZHEJIANG TRILLION GAME TECH

Fluorite tailing material fatigue-resistant water-stable base and preparation method thereof

The application discloses a kind of fluorite tailing material fatigue-resistant water-stable base and preparation method thereof.Belongs to the technical field of solid waste utilization.Preparation of the fluorite tailing material fatigue-resistant water-stable base aggregate ratio is as follows: gravel, river sand, fluorite tailing material and tap water quality ratio is as follows: 55-65 wt%, 30-35 wt%, 5-10 wt% and 40-45 wt% tap water.In the application, fluorite tailings are used as raw materials for building materials, which is a reasonable way of resource utilization, and is also an inevitable demand for promoting ecological protection and high-quality development in the Yellow River Basin.Compared with traditional natural materials, it can also reduce carbon emissions and production energy consumption.When applied to water-stable base, it improves its fatigue resistance, prolongs the service life of water-stable base and improves economic efficiency.
Owner:河南省城乡规划设计研究总院股份有限公司

One-way wood fiber paper and preparation method thereof, one-way wood fiber paper prepreg and preparation method thereof, and wood fiber paper reinforced composite material

The invention provides one-way wood fiber paper. The one-way wood fiber paper is formed by shrinking a one-way wood veneer in at least one direction, wherein a part of substances are removed from the one-way wood veneer; the partial substances comprise lignin and hemicellulose; the thickness of the unidirectional wood fiber paper is less than or equal to 0.6 mm; the apparent thickness of the unidirectional wood fiber paper under the plane pressure of not more than 0.005 MPa is not more than 4 times of the average thickness of the unidirectional wood fiber paper. Compared with the prior art, the unidirectional wood fiber paper provided by the invention is thin in thickness, excellent in mechanical property and anisotropic, is made of 100% pure natural materials, has a compact effect in the thickness direction after being shrunk, and meanwhile, the transverse binding force and compactness of the unidirectional wood fiber paper are increased; and transverse cracking of the unidirectional wood fiber paper is reduced.
Owner:FENSHIPU CO LTD

Surgical mask, mask production method, and mask production apparatus

ActiveJP3252026UProtective garmentUltrasonic weldingSurgical mask
By using the fact that a sheet of a natural material having water absorbency such as cotton can be directly attached to a nonwoven fabric by ultrasonic welding, a sanitary mask or the like that maximally utilizes the advantages of the natural material sheet is provided. 【Solution means】A sanitary mask having a mask part that covers the mouth area during wearing, the mask part being composed of a nonwoven fabric 31, and a nose clip A being attached to the upper end side of the mask part so as to be able to follow the shape of the nose during wearing, is provided with a sheet 39 made of a natural material that is softer than the nonwoven fabric and has water absorbency, and the sheet 39 is at least disposed at a position covering the nose clip on the side that contacts the face during wearing and is ultrasonically welded directly to the nonwoven fabric. The sheet 39 is characterized in that it is impregnated with components that exhibit a moisturizing and / or beauty effect.
Owner:CROSSEED

High-mixing amount construction waste road structure suitable for high water content soil foundation

ActiveCN116949885BIn situ pavingsSolid waste managementBrickWaste Dump Sites
The application provides a high-mixing amount of construction waste runway structure suitable for a high-water-content silt ground, and can be applied to runways of different grades. The high-mixing amount of construction waste runway structure is located on the high-water-content silt ground and sequentially comprises, from bottom to top, a modified subgrade, a granular cushion, a water-stable lower base layer, a water-stable upper base layer, a composite seal layer and a cement concrete surface layer. Except for the composite seal layer, the materials of the structure layers all contain full replacement or high-mixing amount of construction waste recycled materials; the material types can include brick-concrete type construction waste and cement concrete type construction waste; and according to different structure layer positions, different particle size gradations and particle sizes are used. The airport runway surface structure provided by the application uses construction waste materials to replace natural stone materials such as mountain stone and limestone gravel, and meets the technical requirements of each layer of the runway surface through modification and other treatment methods, which has positive significance for saving natural materials, efficiently recycling solid waste and reducing the construction cost of the runway.
Owner:TONGJI UNIV +2

Method for providing handcraft pension service for community home-dwelling old people by using natural material

This invention provides a method for providing handicraft-based elderly care services to seniors living at home in the community using natural materials. The method includes a material pretreatment module, an age-friendly handicraft production module, a closed-loop service process module, and a business closed-loop module. The material pretreatment module is used to ensure the safety of natural materials. The age-friendly handicraft production module and the closed-loop service process module construct a six-step closed-loop service system covering senior ability assessment, handicraft instruction and companionship, artwork display, psychological feedback, and financial settlement. The business closed-loop module establishes a sustainable business model. This invention solves the problems of material safety risks, fragmented service processes, and the lack of age-friendly and economically beneficial aspects of handicraft-based elderly care business models in existing technologies. It has the advantages of improving operational safety, promoting full participation of seniors, providing comprehensive community-based elderly care service support, and empowering seniors economically, thereby reducing the cost of elderly care.
Owner:ENSHI PREFECTURE HUILI BANGBANG TRADING GROUP CO LTD

A flame-retardant wood-plastic composite material and its preparation method

ActiveCN121105247BWood fibreMelt extrusion
This application relates to the field of natural materials technology, specifically to a flame-retardant wood-plastic composite material and its preparation method. The method includes: S1: drying natural wood fiber materials; S2: mixing the dried natural wood fiber materials with various raw materials to obtain a raw material mixture; S3: melt-extruding the raw material mixture in a twin-screw extruder to obtain flame-retardant wood-plastic composite material particles, wherein the proportional coefficient of the temperature control process for each barrel heating section is adjusted based on the temperature changes in each barrel heating section during the melt extrusion process; S4: cooling the flame-retardant wood-plastic composite material particles to obtain the flame-retardant wood-plastic composite material. This application solves the temperature lag and fluctuation problems by dynamically adjusting the proportional coefficient of each heating section of the extruder, thereby improving the mechanical properties and appearance quality of the flame-retardant wood-plastic composite material.
Owner:BINZHOU DONGCHEN NEW MATERIAL CO LTD

Goat-Derived Brana Textile Substrates for Flexible Electronic Applications

This invention presents a novel and sustainable approach for engineering highperformance electronic substrates derived from goat-based textiles, traditionally referred to as Brana. By using a carefully organized sequence of eco-friendly chemical, mechanical, and nanotechnological processes, the textile becomes 8 biodegradable, flexible, and electronically functional platform. This method incorporates active nanoink materials like graphene oxide, carbon nanotubes, and conductive and coordination polymers through scalable deposition techniques such as chemical vapor deposition, electrochemical coating, and screen printing. Consequently, the resulting substrate demonstrates outstanding electrical conductivity, mechanical strength, and thermal stability, making it perfect for next-generation flexible electronics applications. These include wearable biosensors, environmental monitoring devices, flexible printed circuit boards (PCBs), and energy storage components like supercapacitors and battery electrodes. Designed with both ecological impact and industrial scalability [ባ mind, this invention bridges indigenous natural materials with state-of-the-art nanomaterials and fabrication strategies, thereby setting a new benchmark [በ the development of sustainable, multifunctional electronic platforms
Owner:BIO & EMERGING TECH INST

Ceramic material and production method for ceramic material

PCT designated stage expiredWO2025142916A1Ceramic shaping apparatusNatural materialMaterials design
The present disclosure relates to a ceramic material that exhibits superior design properties and has an external appearance like that of a natural material. The ceramic material includes a base material and a design material such that at least a part of the design material is exposed on the surface. The design material has a different particle size / and or color tone from the base material. The ceramic material makes it possible to achieve a design having a more natural appearance. It is preferable for the ceramic material to further contain a coloring material, for the bulk density of the design material to be 0.02-0.4, and for the bulk density of the coloring material to be 0.3-0.8. The design material preferably has at least a color tone different from that of the base material. In such a case, it is preferable that the ΔL* value be more than 0 but not more than 70, the Δa* value be more than 0 but not more than 20, the Δb* value be more than 0 but not more than 45, and the ΔE*ab value be more than 0 but not more than 73.8.
Owner:LIXIL CORP

Foundation structure based on highly saturated brine crystallization technology and construction method thereof

PendingCN121853544AImprove bearing capacityImprove anti-settling performanceSoil preservationSalt lakeIgneous rock
The invention relates to the technical field of construction engineering foundation treatment, in particular to a foundation structure based on a high-saturation brine crystallization technology and a construction method of the foundation structure. The foundation structure comprises a basic primary salt rock bearing layer, a bottom framework cementing layer and a surface sand gravel compensation layer. As the magmatic rocks are very hard, high in density and enough in salt lake chemical environment resistance, the magmatic rocks are directly put into a hypersalinity brine area to form a rigid framework, framework building-in, gap filling and overall cementing are achieved through natural crystallization of salt lake hypersalinity brine, and a core rigid framework of the foundation is formed; the structure can be connected with a primary salt rock bearing layer of a lower foundation to form a stress transmission system, can resist soaking erosion caused by conventional fluctuation of the brine water level, has anti-floating and anti-seepage dual performance, can improve the foundation bearing capacity and the anti-settling capacity, and enables a building newly built on a salt lake to be more stable. Meanwhile, the magmatic rocks are natural materials, so that the salt lake environment is not polluted, and the environmental protection property is good.
Owner:CHINA CAMC ENG

A fully recycled road structure based on construction solid waste and its preparation method

The present invention relates to the field of road engineering structure and material research, and specifically to a fully recycled road structure based on construction solid waste and a preparation method thereof. The fully recycled road structure includes a recycled surface layer, a recycled stable gravel base layer, a recycled soil base layer, and a recycled permeable bonding layer connecting the various layers. Compared with the pavement structure of the prior art, the fully recycled road structure of the present invention completely replaces natural materials with materials such as construction solid waste and applies them to various layers of road structure materials, effectively solving problems such as resource consumption and environmental pollution during road construction. In addition, by providing a recycled bonding permeable layer, the various layers of road structure are bonded into an integral structure, thereby ensuring the durability and service life of the fully recycled road structure.
Owner:GUANGXI UNIV

Ceramic material and production method for ceramic material

PCT designated stage expiredWO2025142917A1Ceramic shaping apparatusUniform designNatural material
The present disclosure relates to a ceramic material that exhibits superior design properties and has an external appearance like that of a natural material. The ceramic material includes a base material and a design material such that at least some of the design material mixed into the base material is exposed on the surface with a random distribution. The degree of randomness is represented by the expression {(dmax-dmin) / dav} × 100, and is preferably 3% or greater. It is preferable for the ceramic material to further contain a coloring material, for the bulk density of the design material to be 0.02-0.4, and for the bulk density of the coloring material to be 0.3-0.8. The ceramic material exhibits superior design properties, and the random distribution of the design material makes it possible to achieve a substantially uniform design on the surfaces and cross sections thereof.
Owner:LIXIL CORP

Bag type suspending agent and preparation method thereof

The invention provides a one-bag type suspending agent. Compared with the prior art, the one-bag type suspending agent provided by the invention adopts the components with specific contents, and the components have good interaction, so that the obtained well cementation flushing spacer fluid or drilling fluid thick plug has the characteristics of low viscosity and high shear, thereby having good suspending capacity, being capable of remarkably improving the suspending stability, being capable of preparing a high-density suspension, and being suitable for being used as a well cementation flushing spacer fluid or drilling fluid thick plug. Meanwhile, the selected raw materials are all natural materials, have the non-toxic characteristic, are safe to the environment and are beneficial to environmental protection; the one-bag type suspending agent is simple in preparation method, convenient to construct and suitable for large-scale industrial production and application.
Owner:SINOPEC OILFIELD SERVICE CORPORATION +2

Yarn-like material for hand-knitted baskets, hand-knitted basket, and method for manufacturing the yarn-like material for hand-knitted baskets.

This invention provides a thread-like component for hand-woven baskets that can reproduce the texture of natural materials, and a hand-woven basket made using this component. [Solution] The yarn-like member for the hand-knitted basket comprises a first yarn-like portion formed from a first material, and a second portion formed from a second material that partially covers the outer surface of the first portion. The second portion is provided at multiple locations along the longitudinal direction of the first portion at irregular intervals. The first material contains polypropylene, polyethylene, an antibacterial material, and a first pigment. The second material contains a part of the first material and a second pigment. The color tone of the second portion is different from that of the first portion.
Owner:山口 誠司

Preparation method of low-cytotoxicity ecological leather based on all-natural materials

The invention relates to a preparation method of low-cytotoxicity ecological leather based on all-natural materials. Comprising the following steps of batch grouping, pre-soaking, fleshing and trimming, main soaking, fleshing and trimming, enzyme unhairing, liming, splitting and trimming, deliming, softening, pickling, tanning by combining tara tannin extract, tea polyphenol and zeolite, wringing, shaving and buffing, rewetting, primary neutralizing, fat liquoring, drying and finishing, and finishing. According to the tanning method, a tanning agent can be better combined with leather fibers by adopting a tanning extract-tea polyphenol-zeolite combined tanning method, so that the shrinkage temperature and the damp-heat resistance stability of the leather are improved, and the strength and the wear resistance of the leather are enhanced. Meanwhile, the tea polyphenol has the effects of resisting oxidation, resisting bacteria and the like, the aging resistance and the antibacterial performance of the leather can be improved, and the service life of the leather is prolonged.
Owner:XINGYE LEATHER TECH CO LTD

Construction method using adhesive layer-equipped natural wood decorative board, and adhesive layer-equipped natural wood decorative board in which adhesive layer is protected by release sheet

To provide a natural wood decorative panel with a self-adhesive layer capable of being simply executed without irregularity by putting a natural material to practical use, and an execution method.SOLUTION: A non-carrier double-sided adhesive sheet having an adhesive layer 6 protected by a release sheet 7 is adhered in advance to "a reinforced sliced veneer 2 having a sliced veneer 3 obtained by slicing natural wood, an adhesive layer 4, and a base material 5" outside a construction site to manufacture a natural wood decorative plate 1 with an adhesive layer protected by the release sheet 7, and the natural wood decorative plate 1 is attached to a target surface while peeling off the release sheet 7 at the construction site. The adhesive layer 6 contains a (meth) acrylic ester, a polymerizable monomer other than the (meth) acrylic ester, a polymerization initiator, an adhesiveness-imparting compound, and fine particles and has a thickness of 10 μm or more and 500 μm or less, and a primer is applied in advance to a target surface having a large area in which two or more rectangles having a short side of 30cm or more and 303cm or less are arranged, and the decorative plate 1 is bonded thereon.SELECTED DRAWING: Figure 1
Owner:株式会社リックプランニング

Preparation method of ecological leather based on all-natural materials

The invention relates to a preparation method of high-comfort ecological leather based on all-natural materials. Comprising the following steps of batch grouping, pre-soaking, fleshing and trimming, main soaking, fleshing and trimming, enzyme unhairing, liming, splitting and trimming, deliming, softening, pickling, tanning in a tara tannin extract-tea polyphenol polymer (tea pigment)-zeolite combination, wringing, shaving and buffing, rewetting and filling, fat liquoring and finishing. By adding natural and modified fatliquoring agents such as the sulfated tea oil, the sulfated cattle hoof oil and the lecithin fatliquoring agent, as well as the natural dye and the filler, the leather can obtain good softness, full hand feeling and good comfort.
Owner:XINGYE LEATHER TECH CO LTD

Method and device for multi-layer frame cascade high-abundance lean material auxiliary feeding

The invention belongs to the technical field of uranium concentration, and particularly relates to a multi-layer frame cascade high-abundance lean material auxiliary feeding method and device. The method comprises the following steps: acquiring the abundance of the lean material end of each layer frame in the multi-layer frame cascade when a single main supply natural material is used; and according to the abundance of the supplied high-abundance lean material, the abundance of the natural material and the abundance of the lean material end of each shelf, the feeding position of the high-abundance lean material is determined. When high-abundance lean materials are supplied in an attached mode, by means of the different positions of the attached material supply points in the cascade structure, the mixing loss can be reduced, and high cascade efficiency is achieved.
Owner:SICHUAN HONGHUA IND

A biodegradable medical mask and a method for preparing the same

ActiveCN115568653BCelluloseElastomer
The present application relates to a kind of biodegradable medical mask and its preparation method, using gelatin as main raw material to prepare the filter core of mask instead of melt-blown cloth, to prepare biodegradable medical mask.The intermediate layer of the medical mask is gelatin-based nanofiber membrane, wherein the support layer is located on both sides of the intermediate layer, which is a napkin made of natural materials, with porous structure.The biodegradable medical mask of the present application has the following advantages: (1) biodegradable, environmental protection, and the materials used are all natural materials; (2) electrostatic spinning is used to give the gelatin fiber membrane static electricity, not only providing the ability to block viruses, but also improving the ability to ventilate; (3) gelatin is a protein, non-toxic and safe, and because its raw material is derived from food processing by-products, it is low in price; (4) gelatin elastomer is prepared as a mask belt, solving the problem of non-degradable mask belt at present; (5) the outer layer is a degradable cellulose porous napkin, realizing the characteristics of pure natural materials of the mask, and facilitating use.
Owner:BEIJING UNIV OF CHEM TECH

Radiation-proof wig

The utility model relates to the technical field of wigs, in particular to an anti-radiation wig which comprises a net cap top piece, and a first connecting groove is formed in the inner side wall of the net cap top piece. According to the anti-radiation wig, through the arrangement of the net cap top piece, the first connecting groove and the anti-radiation layer, when the anti-radiation wig is used, the net cap top piece and the anti-radiation layer are connected and fixed through the arrangement of the first connecting groove, the net cap top piece wraps the anti-radiation layer, and the anti-radiation layer is made of a metal micro-wire net and is composed of metal thin wires which are in cross contact in the warp and weft directions and are communicated with one another; the metal fine threads are formed by spinning metal microsilks with the diameter of-micron, the metal microsilks are clamped between two layers of natural material fabrics and sewn into a single-layer fabric through embroidery or sewing, the metal shielding effect is used, the anti-radiation effect is achieved, and the problem that when a traditional wig is used, due to the fact that the wig is worn for a long time, the wig cannot be worn for a long time is solved. And radiation easily penetrates through the wig, so that certain injury to a human body is caused.
Owner:WENZHOU DIANYA HAIR PRODUCTS CO LTD

Method for in-situ regulation and control of hydroxysulfate secondary mineral passivated pyrite in acid mine water

The invention discloses a method for in-situ regulation and control of hydroxysulfate secondary mineral passivated pyrite in acid mine water. The method comprises the steps that a mine is blocked in a segmented mode and divided into a plurality of packing sections, the two ends of each section are each provided with a blocking wall, a closed space is defined by the two blocking walls, and the closed space is filled with clay and rock blocks; each section of blocking wall is completely combined with the top and the two side walls of the hole wall and adopts an inverted trapezoidal design, so that the packing effect of the packing section is ensured; an interval space is formed between every two adjacent packing sections, and the interval spaces are filled with corn straw powder. Through the collaborative design of in-situ segmented plugging and interval space filling, a large number of chemical agents do not need to be additionally added, and long-acting inhibition of pyrite oxidation can be achieved through the mine structure and natural materials.
Owner:CHINA WEST NORMAL UNIVERSITY