66results about How to "High utilization rate of solid waste" patented technology

The invention discloses a water permeable brick and a preparation method thereof. The water permeable brick comprises two parts, namely a surface layer and a base layer, wherein the material of the surface layer is prepared from the following components in percentage by mass: 60-70% of ceramic sand, 15-20% of sand and 15-20% of cement, and in addition to the solid components with the sum of 100% in percentage by mass, water accounting for 50-60% by mass of cement is further added; and the material of the base layer is prepared from the following components in percentage by mass: 45-65% of building silt unburned ceramsite, 10-15% of cement, 5-10% of fly ash, 10-15% of melon seed-shaped drug slices and 10-15% of sand, and in addition to the solid components with the sum of 100% in percentage by mass, the water accounting for 30-40% and a water reducer accounting for 1-1.5% relative to total mass of the cement and the fly ash are further added. The water permeable brick disclosed by the invention is prepared by using the building silt unburned ceramsite to replace natural aggregate or calcined ceramsite, on one hand, the using ways of the building silt unburned ceramsite can be expanded, the utilization rate of solid wastes is improved, and negative effects on an environment are reduced, and on the other hand, the obtained water permeable brick has excellent performance.

The invention discloses a micro-expansion grouting material. The micro-expansion grouting material is characterized by being prepared from the following materials in parts by mass: 30-50 parts of high-calcium flyash, 15-30 parts of calcined shale, 5-20 parts of phosphorus gypsum, 10-20 parts of ordinary silicate cement and 5-15 parts of rapidly-hardened sulphate aluminum cement. Further, additivematerials and water are added according to the times of the total parts by mass of the above materials on the basis that the total parts by mass of the materials are prepared to 100 parts. The additive materials comprise 0.5-1 part of a polycarboxylic acid water reducer, 0.1-1 part of redispersible latex powder, 0.05-0.15 part of hydroxypropyl methyl cellulose ether, 0.2-0.4 part of calcium lignosulphonate and 0.1-0.5 part of a cationic organic polymer; the water accounts for 8-10 parts. The micro-expansion grouting material has the characteristics of excellent mechanical property, micro expansion, low preparation cost, high solid waste utilization rate, green and environmental protection and high compatibility with soil.

The invention discloses a cementing material based on multiple solid wastes, which comprises the following components in percentage by mass: 15-40% of shale vanadium extraction tailings, 10-25% of Bayer process red mud, 25-40% of fly ash, 1-4% of sodium hydroxide, 6-10% of water glass and 10-16% of water. The cementing material is obtained by taking the shale vanadium extraction tailings, the Bayer process red mud and the coal ash as main raw materials, the technological process is simple, the production cost is low, the solid waste utilization rate is high, and the obtained cementing materialhas good strength and can be used as a roadbed material, a curing material and a building material.

The invention discloses a fabricated light heat insulation wallboard for buildings. Water is added into a light heat insulation wallboard material to form liquid slurry through mixing, and then pouring forming is carried out in a disassembly-free mould. The light heat insulation wallboard material is prepared from, by weight, 80-85% of a cementing material, 10-17% of light heat insulation aggregate and 3-5% of a composite additive, wherein the sum of the weight percentages of the components is 100%, and the weight ratio of the added water to the cementing material is (0.50-0.60):1. The preparing technology of the fabricated light heat insulation wallboard for buildings includes the following steps that firstly, calcium silicate boards are prepared; secondly, the mould is prepared; thirdly, the composite additive and the cementing material are mixed and then doped with the light heat insulation aggregate, water is added, the mixture is stirred to be uniform and then poured into the mould, and after initial setting, final setting, carrying, stacking and curing, the finished product is obtained. By utilizing chemical gypsum, the fabricated light heat insulation wallboard for buildings is prepared and is light, good in fireproofness, waterproofness, heat insulation, sound insulation, compression resistance and fracture resistance and convenient to prepare and construct.

The invention relates to a co-processing integrated device, in particular to an operation method of an industrial solid waste and sludge rotary kiln co-processing integrated device. The sludge spray drying (direct drying) + disc drying (indirect drying), rotary kiln and industrial leftover material (solid waste) collaborative incineration and flue gas purification system integrated device integrates sludge drying, sludge drying and industrial leftover material (solid waste) collaborative incineration and flue gas purification, achieves waste reutilization and reduces environmental pollution.

The invention discloses a method for preparing aggregates with the high apparent density through industrial waste residues. The method comprises the steps that 10-50% of waste incineration ash, 1-40% of chromium slag, 1-40% of nickel slag, 1-50% of lead slag, 10-60% of clay and other industrial waste residue soil are uniformly mixed and ground into powder, water is added for stirring to be uniform, and the aggregates with the high apparent density are obtained through burning by means of the technologies such as extrusion pelletization, drying, calcination and cooling; resource utilization of industrial waste residues is achieved, the scientific and effective way is provided, and the obtained aggregates with the high apparent density can be used for preparing concrete.

The invention discloses a water permeable brick prepared from alkali-residues and construction waste and a preparation method thereof, belonging to the technical field of construction material preparation. The water permeable brick is prepared from the following substances in parts by weight: 100 parts of alkali residues, 200-800 parts of construction waste, 2-8 parts of silica fume, 5-15 parts of cement, 2-7.5 parts of alkali activator and 18-40 parts of water. The water permeable brick is prepared from industrial waste residues and construction waste, and has high solid waste utilization and low production cost; the molding method adopts press molding, is simple in process, does not need high-temperature calcining, and has the advantages of low carbon, environmental friendliness and low energy consumption; and the gel material is alkali-activated alkali residue gel material to prepare the water permeable brick having the advantages of high strength, high water permeability, low hydration heat, carbonization resistance, good durability and the like.

The invention discloses a multi-solid-waste baking-free steaming-free water permeable brick with a double-layer structure and a preparation method thereof, and belongs to the field of preparation of building materials; the water permeable brick comprises a surface layer and a base layer, and the surface layer is composed of the raw materials in parts by weight: 80-100 parts of steel slag micro powder, 20-30 parts of silica fume, 1-4 parts of epoxy resin, 0.5-2 parts of a curing agent, 0.1-0.5 part of a water reducing agent and 10-20 parts of water; the base layer is composed of the raw materials in parts by weight: 10-20 parts of cement, 80-100 parts of iron ore waste rock, 20-30 parts of iron tailing powder, 0.1-0.5 part of a water reducing agent and 10-20 parts of water; the water permeable brick has the beneficial effects that the solid waste utilization rate is high, resource utilization of solid waste is achieved, the process is simple, high-temperature calcination is not needed,energy consumption is low, the surface layer adopts extremely fine particles, and the situation that the interior of the water permeable brick is blocked due to overlong use time is avoided; and silica fume is added into the surface layer as an excitant, so that the strength and the wear resistance of the water permeable brick are improved.

The invention discloses a Lepidolite tailing one-step sintered microcrystal foam heat preservation and decoration integrated plate and a preparation method thereof. The heat preservation and decoration integrated plate is of a two-layer structure. The microcrystalline foaming light layer is prepared from the following raw materials: lepidolite tailings, clay, industrial waste residue phosphogypsum, red mud, construction waste, kaolin, graphene, cement mortar, wood fiber, cellulose ether and the like; the microcrystalline wear-resistant decorative surface layer is prepared from kaolin, silica,red clay, purple shale, graphene, water glass and the like. The prepared integrated plate is high in mechanical performance, low in heat conductivity coefficient, high in double-layer cohesiveness, good in heat preservation effect, resistant to high temperature, not prone to cracking and stable in color development.

The invention discloses alkali slag construction waste ceramsite and a preparation method thereof, which belong to the technical field of building material preparation. It consists of the following parts by weight: 100 parts of alkali slag, 150-600 parts of construction waste, 2-8 parts of silica fume, 10-25 parts of cement, 2.5-8.5 parts of alkaline activator, 0.06-1.5 parts of additive, water 13‑35 servings. The alkali slag construction waste ceramsite of the present invention has a simple molding process, does not need high-temperature calcination, is low-carbon, environmentally friendly, and low in energy consumption. Alkali slag construction waste ceramsite is spherical in shape, rough and hard on the surface, with fine pores inside. It has a wide range of raw material sources, light weight, low apparent density, high strength, low shrinkage, carbonization resistance, good durability, high temperature resistance, and heat preservation. Good performance, good waterproof performance and so on.

The invention belongs to the field of technologies for preparing building materials, and discloses ceramsite with slag and building waste and a method for preparing the ceramsite. The ceramsite comprises, by weight, 100 parts of the slag, 150-170 parts of the building waste, 2-8 parts of silica fume, 1.0-5.0 parts of alkali activators, 0.05-0.8 part of additives and 10-25 parts of water. The ceramsite with the slag and the building waste and the method have the advantages that processes for forming the ceramsite are simple, high-temperature calcination can be omitted, and the ceramsite is low-carbon, is environmentally friendly, is low in energy consumption, is mostly filled with zeolite-like hydration products, is light and porous and is high in strength; the ceramsite with the slag and the building waste is in the shape of a round sphere and has rough and hard surfaces, tiny air holes are formed in the ceramsite, raw materials for the ceramsite can come from wide sources, the ceramsite is light, carbonization-resistant and high-temperature-resistant and is low in apparent density and shrinkage, high in strength and good in durability, heat-insulation property and waterproof property, and the like.

The invention discloses high-performance cement with a large mixed material mixing amount and a preparation method therefor. The cement contains mineral powder and pulverized coal ash, wherein the total amount of the mineral powder and the pulverized coal ash used accounts for 15-50% of the mass of the cement, and the use amount ratio of the mineral powder to the pulverized coal ash is (3.5-5.0): 1. According to the invention, being different from the existing research on the influence on the performance of the cement caused by mixed materials from the aspect of mixed material mixing amount, the influence on the performance of the cement caused by the mixed materials is researched from the aspect of mixed material mixing amount ratio; and after the mixed material mixing amount ratio is determined, the consumption of the mixed materials can be increased as high as possible in a certain mixing amount range, the utilization ratio of solid wastes is increased, and the consumption of clinker is lowered, so that the production cost is reduced on one hand, and good social and environment-friendly benefits are brought on the other hand.

The invention relates to a drying method for evaporative crystallization liquid of vanadium precipitation wastewater and a method for recycling sodium sulfide, belonging to the field of recycling of vanadium extraction waste liquid. According to the drying method for the evaporative crystallization liquid of the vanadium precipitation wastewater, the for evaporative crystallization liquid of the vanadium precipitation wastewater is dried in a sectional heating mode. A sectional heating method comprises the following steps: firstly, carrying out heating for 0.25 to 0.5 hour at 1000 to 1075 DEGC; then, performing heating for 0.25 to 0.5 h at a temperature of 1085 to 1135 DEG C; and finally, conducting heating for 0.5-1 hour at a temperature of 1145-1175 DEG C. The evaporative crystallization liquid of the vanadium precipitation wastewater is treated in the sectional heating mode, so drying time is shortened by 75% or above, efficiency is improved, and cost is saved.

The invention discloses a preparation method of foamed lightweight aggregate prepared from iron tailings. The preparation method comprises the following steps: detecting the content of each componentin the iron tailings, and regulating the mass part addition ratio of raw materials; carrying out ball milling until a particle size is 150 microns or below to obtain raw material powder; adding a fluxing agent, a binder, a foaming agent and an aluminum content regulator into the raw material powder to obtain a mixture; conducting granulating to obtain an semi-finished aggregate product; subjectingthe semi-finished aggregate product to drying, sintering at high temperature, and cooling to obtain the foamed lightweight aggregate. The invention further discloses the foamed lightweight aggregateprepared from the iron tailings. According to the invention, the content of each component in different iron tailings is determined, and the ratio of the iron tailings, the fluxing agent, the binder,the foaming agent and the aluminum content regulator is reasonably controlled, so the iron tailings are ensured to have high solid waste utilization rate, the goals of high strength, low stacking density and low water absorption rate are effectively achieved, and the iron tailings in different reservoir areas are fully recycled; and the preparation method is simple in process, friendly to environment, and convenient for industrial production.

The invention relates to a method for extruding and compounding calcium carbide smelting material through calcium carbide furnace tail gas and dust. The method comprises the steps of mixing calcium carbide furnace tail gas and dust and coal tar according to weight ratio of 80 to 85 percent : 20 to 15 percent, sufficiently stirring the calcium carbide furnace tail gas and dust and the coal tar, and performing extrusion forming. The method directly utilizes the calcium carbide furnace tail gas and dust to extrude and compound the calcium carbide smelting material, ensures that the calcium carbide furnace tail gas and dust can be sufficiently utilized in the calcium carbide furnace smelting, achieves the purposes of high solid waste use ratio, cost reducing, energy saving and environment protection, and simultaneously is simple in production process, low in technical requirements, small in energy consumption, low in cost, and obvious in economic benefit.

The invention discloses a method for preparing a lightweight energy-saving building wall material by using high-content steel slag, and solves the problems of low utilization rate, low additional value and low consumption of the existing steel slag. The preparation method comprises the following steps: mixing 40-50 parts of steel slag, 10-20 parts of clinker, 0-20 parts of blast furnace slag, 40-50 parts of fly ash and 5 parts of desulfurized gypsum powder; performing mixing, adding 0.02-0.05% of a grinding-aid early strength agent, and performing fine grinding; adding 0-2% of reinforcing fibers into the mixture after fine grinding; mixing with foaming slurry, and adding a water reducing agent; after uniform stirring, pouring the mixture into a mold; curing the test piece for 1 day under the condition of constant humidity of 30 DEG C, performing demolding, performing curing for 3-6 days under the condition of constant humidity of 35-65 DEG C, and performing natural curing for 28 days to prepare the qualified light energy-saving wall material. The solid waste utilization rate can reach 90%, and the steel slag utilization rate can reach 42.5% or above.

The invention relates to the technical field of solid waste comprehensive utilization and discloses a method for preparing a water-permeable pavement material from construction waste. The method includes: step one, sorting the construction waste to remove plastic, metal, wood and the like from the construction waste, and only keeping solid waste such as bricks, tiles and concrete; step two, crushing the solid waste by a crushing machine, screening to obtain large particles in particle size of 1-5mm and small particles in particle size smaller than 1mm; step three, mixing the small particles and an alkalizer according to a ratio of 100:(5-10), adopting a ball mill for ball milling for 6-12h to obtain an activated material. By making full use of the bricks, the tiles and the concrete in theconstruction waste, the method has the advantage of high solid waste utilization rate. The water-permeable pavement material produced according to the method is high in strength, water permeability and solid waste content, low in cost, high in additional value, promising in market prospect and beneficial to further increase of the comprehensive utilization rate of the construction waste.

The invention relates to the technical field of building materials and provides a grouting material for a sound barrier backboard. The grouting material comprises the following raw materials (by weight): 15-25 parts of Portland cement, 30-40 parts of fly ash, 50-70 parts of building rubbish, 10-15 parts of water and 0.61-1.08 parts of additives. The grouting material has advantages of wide sourcesof raw materials, high utilization rate of solid wastes, low cost, rapid hardening, early strength, slight expansion, strong bonding force, good heat stability and the like, and can be used as a binder for bonding or reinforcement of engineering equipment. The sound barrier backboard is provided with multiple reinforcing holes. after the backboard is maintained to design strength, the backboard is tensioned with pre-stress steel bars or steel strands, and then the grouting material is injected to glue the pre-stress steel bars or steel strands with the sound barrier backboard as a whole. Thus, the sound barrier backboard is safe and stable and durable.