80results about How to "Solve land occupation" patented technology

The invention discloses a method for treating copper slag. The method includes the steps that (1) the copper slag, a reducing agent and additives are pre-treated respectively; (2) the pre-treated copper slag, the pre-treated reducing agent and the pre-treated additives are mixed so that a mixed material can be obtained; (3) the mixed material is formed so that copper slag pellets can be obtained; (4) the copper slag pellets are dried so that the dried copper slag pellets can be obtained; (5) at the temperature of 1,350-1,550 DEG C, the dried copper slag pellets are reduced so that a solid reduced product containing iron-copper alloy particles and smoke containing lead and zinc can be obtained; and (6) the solid reduced product containing the iron-copper alloy particles is broken and magnetically separated so that the iron-copper alloy particles and tailings can be obtained respectively. According to the method, multiple metal elements in the copper slag can be comprehensively recycled, and the higher recovery rate is achieved.

The invention provides a preparation method for a ceramsite filter material for water treatment. The method is characterized by comprising the following steps: (1) mixing Bayer red mud powder in aluminum manufacturers in Shangdong province, river sediment powder in Xiaofu River at the section of Huangtuya in Zibo city of Shangdong province, gangue powder and a pore forming agent according to a mass ratio of 40-50:40-50:0-5:5-10 to obtain a mixture; (2) putting the mixture into a pan granulator and adding water, the mass of which is 20 to 25% of the mixture, for granulation into spherical particles with phi being 3 to 10 mm; (3) sintering and cooling the spherical particles after drying so as to obtain the ceramsite filter material. According to the invention, Bayer red mud powder in aluminum manufacturers in Shangdong province and river sediment powder in Xiaofu River at the section of Huangtuya in Zibo city of Shangdong province are used as the main raw materials and added at an equal or substantially equal amount, and a small amount of the pore forming agent is blended for the preparation of the ceramsite filter material; therefore, low cost is realized, the problem of flood passage capability of rivers is overcome, and environment pollution and land occupation caused by accumulation of Bayer red mud are simultaneously eliminated.

The invention provides a geological environment treatment method suitable for a steep wall and deep pit type abandoned mine. The method comprises the steps of geological environment exploration, slope clearing treatment, mine pit backfilling, reinforced soil slope filling, retaining wall arrangement, rainwater drainage, slope crest water resistance, vegetation recovery, water storage preservation, deformation monitoring and the like. The specific environment conditions and the topographic features are effectively combined, artificial treatment is conducted on mine terrains formed by mining according to local conditions, and the good effect of recovering the geological environment of the abandoned mine is achieved. An artificial soil slope attaching steep wall which is filled with dump slag and local loess removes the potential geological hazards of collapse, slide and the like existing in steep wall and deep pit landforms, solves the problem that the land is occupied by mining wastes, and also facilitates vegetational cover and land restoration; mountains which recover green are fused together with surrounding natural mountains, the mountains recovering green and the surrounding natural mountains are synchronized in the four seasons, plants grow naturally, natural mountain appearance is recovered, and a contribution is made for national geological disaster control and ecological environment restoration.

The invention relates to a method and a device for preparing novel fuel from municipal domestic waste completely and belongs to environmental protection on energy sources. The method comprises the following steps: separating out reusable substances such as plastic, metal and glass bottles from the municipal domestic waste serving as the only raw material; removing unrecoverable substances such as stones, bricks and cement; using the residual garbage as the raw materials of the novel fuel; breaking bags; sorting; sieving; drying; and performing extrusion molding to obtain the novel fuel. The method and the device can solve the problems of treatment and comprehensive utilization of municipal domestic waste. The fuel product can replace the resources such as solid combustible mineral coal, coke and the like, becomes a substituted energy product for large-scale thermal power plant and domestic fuel, is an important energy replacement and supplement measure, and has very important social and economic significance.

The invention discloses a full-solid waste cementing material, a thermal insulation material, and a processing method and an application of the thermal insulation material, and belongs to the construction field. The full-solid waste cementing material includes the following micro-powder raw materials by the mass percentage: 30-70% of mineral slag micro-powder, 10-40% of steel slag micro-powder, 5-15% of desulfurized gypsum, 10-30% of fly ash, and 1-5% of silica powder. The full-solid waste cementing material can be used as a main material of an inorganic thermal insulation material. The full-solid waste cementing material is composed of mineral slag, steel slag, desulfurization gypsum, fly ash and other solid wastes. Through rational proportioning of all the components, all the componentscan react synergistically with each other. A foamed thermal insulation board prepared from the full-solid waste cementing material has the characteristics of A-class non-flammability, good thermal insulation effect and low cost, can be applied to external wall thermal insulation technology with large quantity. The problem that organic thermal insulation materials are flammable and expensive, and inorganic rock wool is harmful to a human body, has high water absorption rate and needs to be repaired for many times are solved.

The invention relates to the technical field of building materials, in particular to the technical field of high-strength lightweight aggregate concrete materials, and particularly discloses environment-friendly lightweight aggregate concrete and a preparation method thereof. The concrete is prepared from, by weight, 1 part of cement, 1.796-1.908 parts of pumice coarse aggregate, 0.356-0.796 part of pumice sand, 0.382-0.823 part of ferrous mill tailings, 0.005-0.015 part of additive and 0.315-0.45 part of water. The pumice coarse aggregate is subjected to hole sealing treatment, and a hole sealing material is formed by evenly mixing ordinary sand with granularity not larger than 1.18 mm and cement according to the mass ratio of 1:1. The environment-friendly lightweight aggregate concrete has the advantages of being low in manufacturing cost, high in strength and environmentally friendly; the preparation process is simple, the optimization and utilization of pumice resources and ferrous mill tailing waste are effectively achieved, and the concrete has remarkable economic and social benefits.

The invention discloses a method for treating waste water from copper smelting by using modified ardealite, which comprises the following steps: (1) preparing modified ardealite: adding modifiers into the ardealite and mixing uniformly, wherein the modified ardealite comprises 55 to 65 percent of ardealite, 25 to 45 percent of fly ash and 5 to 10 percent of quick lime; (2) absorption: adding the modified ardealite into the waste water from copper smelting according to a ratio of 10Kg / m<3>, mixing, stirring, contacting for one hour, filtering, and detecting the content of copper ions, zinc ions, cadmium ions and other ions of the treated filtrate; and (3) absorbent treatment: settling, dehydrating and drying the absorbent so that the absorbent can be used as a building material.

The invention relates to a long-acting organic compound fertilizer and a manufacturing method thereof, which belongs to the manure field. By taking sludge in a municipal sewage treatment plant as main raw material, adding zeolite, urea, ammonium diacid phosphate, potassium chloride and sodium silicate, then being stirred and mixed with the urea, the ammonium diacid phosphate and the potassium chloride after sludge compression, zeolite drying, stirring and mixing, natural air drying or kiln drying and grinding, and spraying the sodium silicate so as to granulate, dry, disinfect and sterilize the mixture, a product is then produced. The long-acting organic compound fertilizer and the manufacturing method solve the problem of land occupation of the sludge in the sewage treatment plant and secondary pollution, and realize the harmless disposal and resource utilization of the sludge. The fertilizer ensures that crops has good growth power, high plants, more grains, stronger lodging resistance and obvious stimulation effect and ensures that the quality of agricultural products is improved. Furthermore, the fertilizer can increase the ability of reserving nutrients in soil, can modify acid or saline alkali sandy soil, can improve soil aggregate structure, can keep fertilizer efficiency and resist crop diseases.

The invention relates to a method for producing construction gypsum from modified phosphogypsum, which belongs to the technology field of phosphorus chemical industry. The raw materials of phosphogypsum and carbide slag are pulverized and then mixed with Al2O3 and rare earth metal as modifiers, at a weight ratio of (76-88) :(5-15):(3-10):(0.5-1.5), the resulted mixture is granulated and modified by calcination process free of water washing, under such conditions that the calcination temperature is controlled at 150-300 DEG C and the calcination time is 20-30 minutes, and then discharged to obtain modified phosphogypsum. The product performance meets and complies with the premium grade in GB9776-88 standards 'Construction Gypsum'. Additionally, the invention has the advantages that: the modification process has short treatment time and low energy consumption, the invention realizes the reasonable utilization of phosphogypsum resources, and the invention is significant in solving the problems of land occupation and environmental pollution in phosphogypsum storage.

The invention relates to concrete taking green mud and white mud as admixtures and a preparation method for the concrete. The concrete is prepared by uniformly stirring gel, sand, stone, water and a water reducing agent. The gel consists of paper pulp waste slag, cement and other admixtures; the paper pulp waste slag is one or the mixture of the green mud and the white mud; and other admixtures are one or more than two of waste basalt powder, coal ash and blast furnace mineral slag powder. By the concrete, the problems of occupation of lands by the paper pulp waste slag and environment pollution are solved; the aim of comprehensively using the green mud and the white mud is fulfilled; environment friendliness, energy conservation and emission reduction are facilitated; the concrete is high in workability, high in expandability and low in bleeding and can meet a requirement on C10-C55 concrete; a production process is simple; the cost is low; and the preparation method is a green mud and white mud comprehensive using industrial method with an extremely good prospect.

The invention relates to a method for producing a baked brick by using a rare-earth metal modified coal gangue. The method comprises the following steps of: crushing the coal gangue to pelletize with clay and rare-earth metal; feeding the granules into a blender to uniformly blend and mix by adding water; then feeding the mixture into a brick machine for performing compression molding; and finally putting the mixture into a sintering kiln for sintering into a finished product so as to obtain a common baked brick which accords with GB5101-2003 and can be directly used as a building material.

The invention relates to an aerated concrete block produced by dump-leached slags. The block comprises the following raw materials in parts by weight: 200 to 500 parts of dump-leached slags, 80 to 150 parts of quick lime, 50 to 200 parts of cement, 3 to 10 parts of gypsum, 0.4 to 1.2 parts of aluminium powder and 8 to 15 parts of superplasticizer, wherein the dump-leached slags are waste residues formed after silicate minerals are processed by acid. The aerated concrete block has the advantages of light weight, high strength, heat preservation, heat insulation and the like, utilizes wastes, is environmental-friendly, saves resources and is a green building material with excellent performance.

The present invention discloses an autoclaved brick prepared from sodium jarosite residue, and a preparation method thereof, wherein the raw materials comprise sodium jarosite residue, cement, tempering residue, wollastonite powder and an efficient water reducing agent. The preparation method comprises raw material drying, impurity removal, grinding, rolling, stirring, molding, autoclave curing and other steps. According to the present invention, the autoclaved brick contains a large amount of the sodium jarosite residue, the cement and other materials, can cure heavy metal ions, further has advantages of physical property, waste utilization, environmental protection and resource saving, and is the excellent-performance green building material.

The invention relates to a method for preparing baking-free bricks by use of waste oil sludge and desulfurized fly ash. A matrix material of the baking-free bricks is prepared from the following raw materials in percentage by weight: 5-20% of waste oil sludge, 1-15% of desulfurized fly ash, 10-25% of ordinary Portland cement, 25-30% of fly ash, 10-25% of superfine slag powder and 3-10% of a curing agent. The curing agent is prepared from the following raw materials in parts by weight: 5-10% of sodium silicate, 5-30% of magnesium oxide, 5-30% of green-vitriol, 0-30% of alum, 0-30% of aluminum sulfate and 5-15% of sodium phosphate. The preparation method of the baking-free bricks comprises the steps of evenly mixing the waste oil sludge with the desulfurized fly ash together and then standing, mixing the mixture with the curing agent, the ordinary Portland cement, the fly ash and the superfine slag powder, stirring, molding, and performing press and steam curing after demolding, thereby obtaining the baking-free bricks. The baking-free bricks can be prepared by effectively utilizing the desulfurized fly ash and the waste oil sludge, and therefore, the ecological environment can be protected and the resources can be saved.

The invention discloses a shield mud cementing material. The shield mud cementing material comprises, by weight, 5-15 parts of waste shield mud, 1-5 parts of quicklime, 0.5-2.5 parts of active powderand 0.2-0.8 part of desulfurization gypsum. Substances such as water, calcium, silicon and aluminum in the shield mud, the quicklime, the active powder and the desulfurization gypsum react at 600-700DEG C to generate the cementing material with activity. The cementing material can harden after reacting with water and can replace cement and fly ash, the problems that waste shield mud pollutes theenvironment, occupies land and is difficult to transport are solved, and the wasting of resources is also avoided. The invention further discloses a preparation method and application of the shield mud cementing material.

The invention relates to a double-layer unfired water permeable brick with silicon manganese alloy waste residue as aggregate and a preparation method thereof. According to the technical scheme of the double-layer unfired water permeable brick with the silicon manganese alloy waste residue as the aggregate, thickness ratio of a surface layer to a base layer is 1:(8-15), the surface layer is prepared from the following raw materials: 55-70wt% of water-quenched silicon manganese alloy waste residue with the granularity of 0.063-0.34mm, 20-35wt% of portland cement, 5-15wt% of water, 0-0.3wt% of a water reducing agent and 0.5-3wt% of pigment; and the base layer is made from the following raw materials: 50-70wt% of water-quenched silicon manganese alloy waste residue with the granularity of 0.34-3mm, 20-35wt% of Portland cement, 0-15wt% of broken stones, 5-15wt% of water and 0-0.3wt% of the water reducing agent. The preparation method comprises the following steps: firstly uniformly mixing the raw materials of the base layer, putting the mixture into the bottom of a mould, and tamping; carrying out static pressure moulding, pressurizing for 30-40 seconds, demoulding, and maintaining, so that the double-layer unfired water permeable brick with the silicon manganese alloy waste residue as the aggregate is obtained. The double-layer unfired water permeable brick with the silicon manganese alloy waste residue as the aggregate has the advantages that energy consumption is low, the cost is low, the appearance is beautiful and the waste residue is changed into things of value.

The invention discloses a flexible production line suitable for automobile side body production. The flexible production line comprises a conveyor line sequentially provided with a line-on station, a preparation station, a positioning, clamping and main welding station, a high-speed switching repairing welding station and a line-off station. The conveyor line is an overturnable reciprocating conveying production line and comprises a reciprocating conveyor line body driven by a forward and backward rotating motor and six four-vehicle-type switching transportation trolleys. A tetrahedral rotational clamp located on the positioning and clamping station and a rotational high-speed repairing welding clamp located on the high-speed switching repairing welding station are arranged on one side of the reciprocating conveyor line body. The flexible production line suitable for automobile side body production is simple in structure, convenient to use and capable of achieving flexible production, and the situations that land is occupied by establishing a plurality of production lines and much capital is invested are avoided.

The invention provides a lightweight foamed ceramic heat insulation board prepared from tailings and a preparation method thereof and relates to the technical field of heat insulation boards. The lightweight foamed ceramic heat insulation board prepared from the tailings is prepared from the following raw materials by weight: 28-35 parts of stone coal vanadium extraction tailing powder, 22 to 26 parts of iron tailing powder, 30 to 35 parts of kaolin, 4-7 parts of diatomite, 4-6 parts of talcum powder, 0.8 to 1.2 parts of sodium silicate, 0.6 to 1 part of zirconite, 3.5-5 parts of aluminum oxide short fibers, and 0.7-1 part of a composite foaming agent. The foamed ceramic heat insulation board prepared by the method is light in weight, high in strength, green and environment-friendly, goodin thermal insulation performance, flame-retardant, fireproof, damp-proof, freeze-proof and long in service life and is an excellent-quality ceramic insulation board.

The invention relates to the technical field of well cementation cement preparation, and discloses a high-temperature-resistant well cementation cement system and a preparation method thereof. The system is composed of a solid component and a liquid component, and the weight ratio of the solid component to the liquid component is 1:(0.2-0.9). The solid component contains 25 to 85 weight percent of cement, 4 to 60 weight percent of silica sand and 4 to 60 weight percent of fly ash, and the weight ratio of the silica sand to the fly ash is (0.0714-14):1; and the liquid component contains water and an additive. The cement system not only can solve the problem of strength decline of well cementation cement stone in an ultrahigh-temperature environment, but also can solve the problems of land occupation and environmental pollution caused by fly ash, and promotes high-added-value utilization of industrial solid waste fly ash.

The invention relates to a technique for the preparation of phosphorus dregs cast stone used for construction decoration and using high temperature phosphorus dregs fluid. The invention is characterized in that: firstly, the configuration and the preheating of auxiliary raw material: quartz sand and kaoline are taken as auxiliary raw materials and heated to 1,300-1,450 DEG C; secondly, hot ingredient: the high-temperature phosphorous dregs fluid, which is discharged from a phosphorus electric stove, passes a fluid groove and flows into a pond kiln, and the auxiliary raw material is put into a pond kiln simultaneously, wherein, the quality ratio of the phosphorus dregs to the auxiliary raw material is 65-75:25-35; thirdly, melting: the melting mix of the phosphorous dregs and the auxiliary raw material reaches 1,450-1,580 DEG C; fourthly, shaping; last, crystallization and annealing: the crystallization is processed under 1,000-1,150 DEG C for 60-120 minutes, and then is annealed to room temperature, thus a product is made. The invention can effectively use the thermal energy of the high-temperature phosphorous dregs fluid to realize the conversion of the phosphorous dregs fluid into the resources and reduce the energy consumption and the cost of cast stone production, thereby causing the phosphorous dregs cast stone adaptive to the purpose of large-scale construction decoration.

The invention discloses an organic-inorganic compound fertilizer and a production method thereof. The production method comprises the following steps: squeezing sludge until the water content is 60-70%; drying and dehydrating montmorillonite and zeolite, mixing with the squeezed sludge while hot; aerobically treating the mixture and drying to obtain powder, mixing the powder with urea, MAP (monoammonium phosphate) and potassium chloride, spraying sodium silicate to pelletize, drying, sterilizing and packing. The organic-inorganic compound fertilizer has the benefits that the problems of land occupation and secondary pollution caused by a great amount of sludge from an urban sewage treatment plant are solved, the fertilizer efficiency is obvious, better than that of various fertilizers on current market, and achieves the national compound fertilizer standard; the montmorillonite and the zeolite are capable of promoting the ion exchange of soil, improving the capacity of conserving nitrogen, phosphorus and potassium and other nutrients of the soil and improving the granular structure of the soil and has a remarkable effect of improving acid soil and saline alkali soil; since the sodium silicate contains about 65% effective silicon, the rice blast can be effectively resisted, and the product quality of crops can be improved.

The invention discloses a green and environmentally-friendly concrete hollow block. The green and environmentally-friendly concrete hollow block comprises, by weight, 14 parts of water, 31-35 parts of cement, 65-70 parts of fine aggregates and 120-180 parts of coarse aggregates, wherein the coarse aggregates are regenerated coarse aggregates or a regenerated coarse aggregate and a natural coarse aggregate mixture, and the proportion of the regenerated coarse aggregates in the whole coarse aggregates is 0-100%. The invention also discloses a production method of the green and environmentally-friendly concrete hollow block. The method comprehensively takes the good mechanical performances of N-type concrete hollow blocks into consideration, and adopts the regenerated coarse aggregates to partially or completely substitute the natural coarse aggregates in the N-type concrete hollow blocks, so the application range of regenerated concrete is enlarged, and solving of the problems of land occupation and environment pollution of waste concrete is facilitated.

The invention discloses an amino-acid-containing biological compound fertilizer. Fertilizers are important materials ensuring the development of high-yield and high-quality agriculture. The amino-acid-containing biological compound fertilizer is prepared by the following steps: A) preparing a biological organic fertilizer; B) preparing an amino-acid-containing liquid fertilizer; C) preparing a rubbish organic fertilizer; D) mixing; and E) granulating: pressing the evenly mixed materials to generate particles and obtain the amino-acid-containing biological compound fertilizer. By adopting the amino-acid-containing biological compound fertilizer, the rubbish buried for many years can be utilized again, the environment can be effectively improved and the production cost can be reduced. The beneficial bacteria of the organic fertilizer can kill pathogenic bacteria in soil and comprehensively improve soil, thus the aims that the soil is soft and loose, has air permeability, preserves moisture and fertility, resist drought and excess moisture and has higher temperature and soil fertility, the continuous cropping disease of crop is overcome, diseases / pests are effectively controlled, theyield is increased stably, and the quality and mouth feeling of agricultural products are greatly improved, can be realized.

The invention discloses a preparation method applicable to treating garbage derivate by being jointed with a cement kiln, belonging to the technical field of garbage treatment. The method provided by the invention comprises the following steps: sieving the domestic garbage to remove inorganic incombustible matters; crushing the domestic garbage through a crushing machine; adding 10 to 20% of crushed coal and 5 to 10% of alkaline additive by weight; fully agitating and uniformly mixing the mixtures; and then drying the mixture by forcibly ventilating; and finally extruding to form through forming equipment so as to obtain the garbage derivate fuel. With the adoption of the preparation method provided by the invention, the land resource can be saved, the pollution of the garbage to the environment is removed, the cost of preparing the garbage derivate fuel through the method is low, the quality of the product is high, and a product can be remotely conveyed and stored for a long time, so that the reduction, the recycling and the innocent treatment of the domestic garbage can be achieved.

The invention discloses a method for producing fiberglass by using pulping and papermaking white mud. The method comprises the following steps that in the step of treating the pulping and papermaking white mud, water is added into the white mud to be stirred so as to be uniformly dispersed and diluted, after coarse and big particles are removed, filtering and condensation are carried out to obtain dewatering white mud; the dewatering white mud is dried and calcined at the temperature of 900 and 950 DEG C to obtain a white mud calcining matter; in the step of mixing the following components in parts by weight, the components including 50-60 parts of pyrophyllite, 8-10 parts of quartzitic sandstone, 5-8 parts of dolomite, 8-10 parts of white mud calcining matter, 15-25 parts of kaoline, 7-10 parts of borocalcite and 4-6 parts of albite are mixed; smelting at high temperature to prepare glass liquid and wiredrawing and molding to prepare the fiberglass. According to the method, the problems of environment pollution and land occupation caused by white mud land treatment are solved; and meanwhile, the white mud is subjected to resource utilization, so that exploitation and consumption of natural limestone resources in the fiberglass industry are reduced, the manufacturing cost of the fiberglass can be reduced, and the method has obvious environment benefit and economic benefit.

The invention provides a method for treating coastal saline soft ground by jetting industrial waste slag into two-way nail-shaped mixing piles. The method comprises the steps of: removing sundries on the surface of the site to be treated, and leveling the site; Identify each pile position and mark it; according to the pile position identification, move the two-way nail-shaped pile mixer into place and align the specified pile position; first spray and first stir the composite curing agent slurry; second spray and second stir waste tire rubber powder; The invention uses a variety of industrial waste residues to prepare a composite curing agent, which can not only treat the coastal salt-stained soft foundation formed by tidal flat reclamation on a large scale, but also solve the problems of land occupation and environmental pollution by various wastes, and achieve good economic and social benefits. And environmental benefits, has a relatively broad engineering application prospects.

A sea plane take-off, landing and accessory device is composed of piles 1, a middle compartment body 2, a deck 3, a front long compartment body 13, a rear long compartment body 14, an air energy storage device 15, a pressurized water generating device 16, a bothway single runway 17, a blocking device 18, a bullet resistant device 19, a photovoltaic power generation device 20, a transformer room 23, a hydraulic device 25, a commanding tower 31, a control room 32, a plane shed 33, an elevator 34, a dock compartment 35, a wind driven generator 36, a water diversion device 38 and the like. The sea plane take-off, landing and accessory device is characterized in that the devices mutually operate in a linkage mode.

The invention relates to a method for separating and treating granite saw powder and the usage thereof, mainly aiming at solving the problems that the granite saw powder is large in occupied land area and pollutes the environment. The method comprises the steps of: firstly, diluting the granite saw powder into slurry with concentration being 20% by water, sieving the slurry by 40 meshes, enabling the sieved slurry to enter a slurry storage tank, then sending the slurry into a high gradient magnetic separator by a pump for magnetic separation, separating the metal-containing powder out from the granite saw powder to remain the metal-free powder, carrying out precipitation and dehydration, drying the product by a drum drier to obtain white powdered substance with the water content less than or equal to 15%, wherein the white powdered substance can be used as ceramic raw material. The method has the advantages that the problems of environmental pollution and land occupation can be solved, the resource is fully utilized, and the waste is changed to be valuable.

The invention provides a method for filling an urban road roadbed with slag. The method comprises the following steps: step 10: paving the clay with plasticity index greater than or equal to 6 at theroadbed bottom and forming a bottom sealing layer;step 20: paving the slag, with stable performance after the treatment of hot splashing, water quenching, hot sealing or aging, on the bottom sealing layer and forming a lower-layer embankment; step 30: paving the clay with plasticity index greater than or equal to 6 at the top of the lower-layer embankment, and forming an interlayer; step 40: paving the slag, with stable performance after the treatment of hot splashing, water quenching, hot sealing or aging, on the interlayer and forming an upper-layer embankment; step 50: paving lime-ash soil,37 lime earth or cement stabilized soil at the top of the upper-layer embankment and forming a top sealing layer; step 60: paving the clay with plasticity index greater than or equal to 6 at the periphery of the lower-layer embankment, the periphery of the interlayer and the periphery of the upper-layer embankment, and forming a revetment. The method provided by the invention can realize large-scale utilization of the slag.

The invention relates to a high-temperature molten slag composite micropowder concrete and a preparation method thereof. The preparation method comprises the following steps: stirring and mixing cement, high-temperature molten slag composite micropowder, macadam, river sand, a water reducing agent and water, and carrying out hydration setting. Every cubic meter of the high-temperature molten slag composite micropowder concrete contains 170-360kg of cement, 100-270kg of high-temperature molten slag composite micropowder, 1000-1100kg of macadam, 650-800kg of river sand, 170-195kg of water and 4-6.5kg of water reducing agent. The high-temperature molten slag composite micropowder used as the auxiliary cementing material can effectively improve the bleeding isolation and workability of the concrete and enhance the working performance of the concrete; as compared with the cement concrete, the long-term folding strength, cleavage strength and chlorine ion penetrating resistance are greatly enhanced, thereby being beneficial to improving the toughness and durability of the concrete; and the high-temperature molten slag composite micropowder concrete lowers the cost, and has the advantages of energy saving and environment friendliness.