Garbage burning ash cured heavy metal high-strength ceramisite preparation method

The present invention discloses garbage burning ash cured heavy metal high-strength ceramisite preparation method, which comprises: mixing garbage ash, trash gray, saline soil 5, glass powder, calcium carbonate, sodium carbonate mixed in a certain weight ratio, the ratio of water is 0.25 ~ 0 .40, made of spherical particles, and then drying and sintering process made; for the utilization of waste has opened a wider use of the channel; the present invention is to hazardous waste - waste incineration fly ash as a ceramic material, by Preparation of a high-strength ceramic specific process, even in extremely harsh environments also have significant heavy metal curing properties, with high stability and security. The invention not only achieve a sound processing, utilization of solid waste, but also to avoid secondary pollution.

Flyash micro bead non-sintered refractory and fire-resistant heat-insulating brick

The invention discloses a new fly ash micro bead no sintering and sintering fire-resistant insulating brick. It uses 30-85 percent of micro bead which separates from fly ash; whose proportion is over 1; diameter is between 0.1 and 380 micron and filled with N2 and CO2 inert gases. No sintering forming and not forming fire-resistant insulating bricks can be obtained through compounding with hydraulicity or chemistry anchoring agent, adopting semidry pressing moulding and libration hydraulic forming. Its volume weight is 400kg/m3 and refractoriness is 900-1600deg.C. Using micro bead to produce the bricks can save elding, energy consumption and resource, improve availability of renewable resource, low product cost and benefit company and country.

Method for preparing road silicate cement from red mud

The invention discloses a method for preparing a road silicate cement from red mud. In the method, the road silicate cement is prepared by utilizing alumina red mud subjected to dealkalizaiton as a main raw material. Through designing main ore compositions in a road silicate cement clinker, such as C3S, C2S, C4AF, C3A and the like, 40%-50% red mud is utilized to partially replace calcium and aluminum raw materials which are used for producing the road silicate cement and completely replace iron and silicon raw materials. The red mud road silicate cement prepared by the method has good property, and the utilization rate of the red mud is high.

Tracer controller of robot

The utility model provides a tracer controller of robot, the on -line screen storage device comprises a base, be provided with the terminal equipment of robot control handle, ride gain knob, robot model on the base, robot model comprises simulation arm and simulation joint to be equipped with angle sensor in the simulation joint. The utility model discloses degree of automation is high, can simple and easy audio -visual control machine people, and can make ordinary person grasp fast, and can skillfully operate, reduce the application technique threshold of robot, the operating efficiency of improvement robot.

Red mud slurrying multistage circulating dealkalization method

The invention discloses a red mud slurrying multistage circulating dealkalization method which comprises the following steps: dealkalizating by slurrying red mud, filtering the red mud slurry to separate alkali, recovering the alkali from the dealkalization solution, and the like. The invention effectively treats the solid waste red mud discharged in alumina industry, and implements comprehensiveutilization; and since no three wastes are discharged, the method does not generate secondary environmental pollution and has the advantages of simple technique and low cost.

Novel raw-soil baking-free brick and preparation method thereof

The invention discloses a novel raw-soil baking-free brick and a preparation method thereof. The novel raw-soil baking-free brick is prepared from the following components in percentage by weight: 70%-85% of raw soil, 3%-10% of cement, 3%-8% of quick lime, 3%-8% of gypsum, 2%-8% of sand, 1%-3% of straw fibers, 1%-2.5% of water reducer and 0.5%-1% of sodium hydroxide. The novel raw-soil baking-free brick is an economical and environment-friendly building material and has the properties capable of satisfying the standards of the building industry; the novel raw-soil baking-free brick does not need to be baked and can be produced only by using local materials, namely materials around a construction site, and therefore, the costs of various aspects are greatly reduced and a large quantity of costs can be saved for the construction of villages and small towns; the novel raw-soil baking-free brick is especially suitable for salinized soil regions in which a large amount of salt is deposited at ...

Plant management method for controlling transport of sandstone small watershed channel silt

The invention discloses a plant management method for controlling transport of sandstone small watershed channel silt. The problem that an ordinary plant check dam cannot block fine sand and is short in service life is solved by adopting a symbiotic shrub grass matching mode and a specific planting form, and the soil-fixing, sand-fixing and water-holding capacity is improved; the method is convenient in construction and low in cost, the survival rate of plants can be greatly improved, the method does not threaten a weak ecological environment formed in a local area, and the method is suitable for being widely popularized and used; by the method, soil erosion and further transport of silt to downstream in a channel can be obviously reduced, meanwhile, water flow flushing is relieved, water is stored, soil is improved, and the method has an important significance in preventing silt transport and improving plant coverage percentage in the channel.

Technology for preparing low-heat cement by dry desulfurizing fly ash

The invention discloses technology for preparing low heat cement through dry-method desulphurization of pulverized coal. The method for preparing the low heat cement from the pulverized coal comprises the following steps that: 42 to 81 percent of modified pulverized coal, 15 to 50 percent of cement clinker with strength of between 50 and 65 MPa, 3 to 8 percent of an alkali excitant, 0 to 20 percent of blast-furnace slag and 1 to 5 percent of gypsum are selected, are mixed and grinded to a sieve of 0.045 mm; and residue on the sieve is less than 10 percent so as to prepare the low heat cement of the pulverized coal with strength grade of between 32.5 and 42.5 MPa.

Method for preparing SiC/Mullite composite sphere

The present invention discloses a method for preparing SiC/Mullite composite sphere. The method uses the flyash micro-beads as a principle raw material and comprises the following steps: mixing the flyash micro-beads and carbon powder with a mass ratio of 100: 30-40 to uniform, increasing the temperature to 1100-1400 DEG C with a temperature rising speed of 10 DEG C/min under the circulating argonwith the flow of 0.5-1L/min for executing the microwave carbon thermal reduction, after keeping the temperature for 0.5-2 h, naturally cooling to the room temperature for obtaining the powder material; and calcining the powder under 600-800 DEG C for eliminating the residual carbon, and namely the SiC/Mullite composite sphere of the invention is obtained. The method of the invention not only facilitates the environment protection, but also has the excellent performances of low cost of raw material and simple preparing technique. The obtained SiC/Mullite composite sphere has a hollow structureand ...

Method for preparing Sialon hollow ball

Foaming aluminium and aluminium alloy closed cell ball vesicular agent

A foaming aluminum and aluminum alloy sealed cell vesicular agent is prepared by a. raw materials: micro-pearl 100wt%; deionized water 300vt%; sensitizing liquid 0.5-3wt%; chemical plating liquid 4.50-30.50mol.dm3; b. washing and edulcorating: stirring and washing micro-pearl in solid: liquid=1:3 until surface cleaning, and 1400r/min drying; c. sensitizing. Its advantages include low cost, simple process and no pollution.

Circulating fluidized bed boiler high efficiency desulfurization technology

Laying dry powder in new type

A dried masonry powder as a novel cementing material for building is prepared from powdered coal ash, russet mud, activator, lime, gypsum and early strengthening agent through proportional mixing, grinding and sieving. It advantage is stable performance.

Technology for preparing low-heat cement by dry desulfurizing fly ash

The invention discloses technology for preparing low heat cement through dry-method desulphurization of pulverized coal. The method for preparing the low heat cement from the pulverized coal comprises the following steps that: 42 to 81 percent of modified pulverized coal, 15 to 50 percent of cement clinker with strength of between 50 and 65 MPa, 3 to 8 percent of an alkali excitant, 0 to 20 percent of blast-furnace slag and 1 to 5 percent of gypsum are selected, are mixed and grinded to a sieve of 0.045 mm; and residue on the sieve is less than 10 percent so as to prepare the low heat cement of the pulverized coal with strength grade of between 32.5 and 42.5 MPa.

Multifunctional steel-iron crystal grain thining oxygen-inhibiting covering agent

This invention opens a kind of new type multiduty steel grain refining block oxygen covering agents,which includes following steps: (1) material weight list : microbead 50-80% gravity more than 1, auxiliary material 20-50%; (2) mix microbead and a or several auxiliary material equally, mix and mill in the ball mill, keep grinding temperature under 150-200degC, mill prill at 0.1-250mum, water content be less than 1%, barrier package. As compare to modern technology, this invention is excellent: 1. the microbead comes from solid waste fine coal ash, which gravity is more than 1 and is everywhere, easy to obtain, recycle resource under low cost. It can entirely replace dear metal thinning agent. It can also enjoy nation exemption; 2. Preparation is simple, do not need complex process equipment and process; 3. low cost, pollution free, production industrialized; 4. steel grain refining block oxygen covering agents by this method can use in large scale, small amount of application, good effect ...

One-step desulfurization of breeze furnace and method for producing low heat cement with modified coal slag thereof

The invention discloses a one-step desulfurizer which is applicable to a pulverized coal boiler and an application method thereof, as well as a method for producing low heat cement by using later produced fly ash and residues . The preparing method of the desulfurizer provided by the invention is to mix and grind following components by mass percentage: 70 to 95 percent of quick lime, 1 to10 percent of fluorite, 1 to 10 percent of nic slag, 1 to 10 percent of Si-Mn iron slag, and 1 to 10 percent of titanium slag until 0.045mm sieve residue is less than 10 percent; better effect can be obtained if the content of each component corresponds with the disclosed standard in the specification; in the method for preparing the cement by modified fly ash of the invention, CaO and other components are taken according to mass percentage and ground into fine powers to prepare alkali-activator; then, 42 to 82 percent of the modified fly ash, 15 to 50 percent of cement clinker, 1 to 8 percent of alkali-activator ...

Method for preparing SiC/Mullite composite sphere

The present invention discloses a method for preparing SiC/Mullite composite sphere. The method uses the flyash micro-beads as a principle raw material and comprises the following steps: mixing the flyash micro-beads and carbon powder with a mass ratio of 100: 30-40 to uniform, increasing the temperature to 1100-1400 DEG C with a temperature rising speed of 10 DEG C/min under the circulating argon with the flow of 0.5-1L/min for executing the microwave carbon thermal reduction, after keeping the temperature for 0.5-2 h, naturally cooling to the room temperature for obtaining the powder material; and calcining the powder under 600-800 DEG C for eliminating the residual carbon, and namely the SiC/Mullite composite sphere of the invention is obtained. The method of the invention not only facilitates the environment protection, but also has the excellent performances of low cost of raw material and simple preparing technique. The obtained SiC/Mullite composite sphere has a hollow structure ...

Technology for preparing composite desulphurization gypsum building block with gradient structure

The invention discloses a technology for preparing a composite desulphurization gypsum building block with a gradient structure. The composite desulphurization gypsum building block is prepared by the following steps of preparing slurry from a composite gypsum cementing material slurry formula disclosed by the invention, wherein N groups of slurry are prepared after aluminum powder is doped from a first group to an Nth group according to a gradient; sequentially pouring the slurry into a pre-fabricated cast iron die which is uniformly divided into N grids by withdrawable partition plates and is heated to 35 to 50 DEG C, withdrawing the partition plates and screeding the slurry, wherein the whole slurry pouring process is implemented within 5 to 15 minutes; maintaining the slurry together with the die for 2 to 4 hours under the condition of 35 to 50 DEG C; de-molding a maintained building block, and cutting the building block.

Method for preparing Sialon hollow ball

This invention relates to a method for preparing hollow sialon spheres. The method comprises: (1) uniformly mixing hollow fly ash microbeads and carbon powder at a wt. ratio of (68-74):(32-36), and sieving; (2) heating at a rate of 0-300 deg.C/h in high-purity nitrogen atmosphere (flow rate = 0.05-0.2 L/min), 5 deg.C/min within 300-1000 deg.C, 3 deg.C/min within 1000-1300 deg.C, and 2 deg.C/min within 1300-1500 deg.C, keeping the temperature for 4-6 h, and cooling to obtain powder; (3) keeping the powder in a 750-850 deg.C oxidation furnace for 4-5 to remove residual carbon and obtain hollow sialon spheres. The hollow sialon spheres have purity of 90 plus and minus 5%, and particle sizes larger than 43 mu.m. The method has such advantages as no need for auxiliary materials, no need for acid washing, simple process, abundant raw materials, and low cost.

Cement-base material gradient mixing mill

A gradient pugging apparatus for preparing the cement-based materials, such as the gradient functional concrete or short fibres reinforced cement-based gradient functional material is composed of vertical stirrer, horizontal pugging cabin, water flow regulator and more than two storage tanks, which consists of feed hopper, frequency-varying induction motor, speed-varying gears, screw feeder and discharge pipe.

Separating and extracting apparatus high-additional value mineral from dry flyash

An apparatus for separating high-value minerals (microbeads Fe-enriched microbeads, sub-micron microbeads, superfine powdered coal ash and residual carbon) from the dry powdered coal ash is composed of raw ash storage tank, classifying turbine separator, multi-stage turbine separator, superfine ash collecting bags, and superfine ash cabin. It integrates such functions as multi-stage separation, classifying, gradient magnetic separation, heating for demoistening and electrostatic anti-exploding.

High-calcium refining softening agent for oxygen spray powder iron & steel

A high calcium refining agent for oxygen blowing iron and steel consists of micropearl extracted and separated from dried flyash 30%-50%, shell of effective calcium oxide 20%-30%, dried red mud 20%-40%, refined fluorite 10%-20%. Its advantages include low cost, good efficient and dispersion and short process.

Consolidation growth-promoting stabilizer, and preparation method and application method thereof

The invention discloses a consolidation growth-promoting stabilizer, and a preparation method and an application method thereof. The stabilizer is composed of the following components, by weight: 20-50% of common Portland cement, 1-30% of fly ash, 5-10% of silica fume, 30-50% of dihydrate gypsum, 0.5-1.5% of a dispersant, and 5-15% of sodium polyacrylate. The above components are prepared into liquid by using water with the method disclosed by the invention. When in use, with the method disclosed by the invention, soil is consolidated with a slurry injection manner using a high pressure gun. The stabilizer provided by the invention has high stabilization capacity and high adhesion to soil. With the stabilizer, soil capacities of absorbing and storing water can be improved. While an easily-weathered slope is effectively stabilized, sowed seed normal germination and growth can be ensured and can be promoted to a certain extent. Therefore, erosion can be resisted, vegetation restoration can ...

Method for preparing aerated building block from desulphurized gypsum

The invention discloses a method for preparing an aerated building block from desulphurized gypsum. The method comprises the following steps: 1), mixing 50-80% of desulphurized building gypsum, 5-15% of ordinary portland cement, 1-5% of high-alumina cement, 5-15% of lime and 8-20% of pulverized coal ash by mass to obtain a mixture and preparing a powder material; 2) taking the mass of the powder material as a reference value 1, getting the following components in percentages by mass: 0.5-1.5% of a high-efficiency water reducing agent, 0.02-0.06% of a retarder, 0.06-0.3% of aluminum powder and 45-55% of water; preparing the high-efficiency water reducing agent, the retarder and the aluminum powder into a liquid material in water at the temperature of 35-50 DEG C; 3) mixing and stirring the powder material and the liquid material for 2-3 minutes to obtain a homogenized slurry, and pouring the slurry into a mold with the temperature of 35-50 DEG C; 4) curing the poured slurry along with the ...

Technique for desulfurization in high efficiency for circulating fluidized bed boiler, and for preparing low-heat cement from fly ash

The invention provides a technology of preparing low heat cement which uses the highly effective desulphurization and the pulverized coal ash of the circulation fluid bed boiler, the sweetening agent is composed of the following component of percent weight: the quick-lime is 70-95%, fluorspar 1-10%, zinc dregs 1-10%, silicon manganese iron slag 1-10%, titanium dregs 1-10%, when using the sweetening agent,it maintains the calcium sulfur ratio of sweetening agent calcareous quantity and the coal-burning sulphur content is 2.5-10.5:1; the invention includes the following step: takes the various components 42-81% of modified pulverized fly ash, 15-50% of cement clinker with the intensity is the 50-65MPa, 3-8% of the alkalinity excitant, 0-20% of the blast furnace slag, 1-5% of the gypsum, mixes and rubs to 0.045mm sieves and the triage which is smaller than 10%, prepares the coal ash low heat cement whose intensity rank is 32.5- 42.5MPa.

Thermal carbon composite denitration method for coal-fired boiler

The invention discloses a thermal carbon composite denitration method for a coal-fired boiler, and relates to a denitrifying agent and a preparation method and a use method thereof. The method comprises the following steps: mixing 80 to 100 mass percent of powdered coke, 0 to 20 mass percent of calcium material and 0 to 5 mass percent of vanadium slag; grinding the mixture until the fineness is 75mu m and the sieve residue is less than 10 percent; and taking flue gas extracted from a tail flue of the boiler as a conveying medium, spraying the denitrifying agent of which the combustion heat ou tput is 10 to 20 percent of the fuel heat output into a hearth in a multi-point opposite spraying mode through a spray head which is arranged in a region at the temperature of between 950 and 1,200 DEG C on the upper part of the hearth of the coal-fired boiler, and maintaining the excess air factor alpha be less than 1. The method realizes denitration in the boiler, has the denitration efficiency of ...

Plant fiber lightweight aggregate-raw soil thermal insulation block and preparation method thereof

The invention discloses a plant fiber lightweight aggregate-raw soil thermal insulation block. The plant fiber lightweight aggregate-raw soil thermal insulation block comprises the following components in percentage by weight: 40-75% of straw lightweight aggregate, 10-30% of cement, 0-10% of lime, 10-30% of raw soil, 0-10% of an expanding agent, and 0.5-2% of a water reducing agent and 0.2-1% of a water repellent agent based on the total weight of the lime, the cement, the raw soil and the expanding agent. The plant fiber lightweight aggregate-raw soil thermal insulation block prepared by a preparation method disclosed by the invention has the advantages of light weight, high strength, better heat preservation and heat insulation, excellent sound insulation, sound absorption and durability, uniform and stable mechanical properties and the like; in view of an actual situations in rural areas in China, the plant fiber lightweight aggregate-raw soil thermal insulation block has an important ...

Modified low-carbon raw soil cement and preparation method thereof

The invention discloses modified low-carbon raw soil cement and a preparation method thereof. The raw soil cement is prepared from the following raw materials by weight percentage: 40-60% of clay, 20-45% of cement, 0-15% of gypsum, 0-12% of expanding agent and a water reducing agent which is 1-2wt% of the above raw materials; the preparation method can reduce the carbon emission, saves resources and energy, is an energy-saving and environment-friendly material, is different from the existing building materials, has no influence on environment when being discarded, can enter a natural circulation system when being crushed and dispersed in soil, can be utilized in quantity or can contain poor-quality soil, and has good crack resistance and water resistance.

Partially degradable soil solidifying vegetation composite

The invention discloses a partially degradable soil solidifying vegetation composite. The composite comprises 10 parts of inorganic gelled materials, 6-9 parts of water, 0.02-0.3 part of non-ionic polyacrylamide, 0.05-0.3 part of sodium polyacrylate super absorbent polymer and 0.1-0.5 part of modified wheat straw fiber by mass. The composite has the following advantages and characteristics: the spraying layer formed after the composite is sprayed is of microcellular structure, is convenient for the rainwater to infiltrate and has higher strength, stronger water absorption and water-retaining property, stronger erosion resistance and better plant growth compatibility and degradability; the sources of the raw materials are wide and the cost is low; toxicity and pollution are avoided; and the construction process is simple when in use.

Crack-resistant waterproof cement-based permeable composite repairing material and method for preparing same

The invention discloses a crack-resistant waterproof cement-based permeable composite repairing material and a method for preparing same. The crack-resistant waterproof cement-based permeable composite repairing material of the invention comprises the following components by the mass fraction: 20% to 40% of Portland cement clinker, 3% to 20% of fly ash, 2% to 10% of gypsum, 2% to 10% of high-alumina cement, 1% to 4% of sodium silicate, 0.1% to 1.5% of high-efficiency naphthalene-based water-reducing agent, 0.1% to 2.0% of sodium carbonate, 40% to 70% of shaping quartz sand, 0.1% to 3.0% of polypropylene staple fiber and 0.05% to 1.0% of sodium carboxymethyl cellulose. The high-performance material of the invention is free from toxicity and pollution, and further has the characteristics of solid cementation, good penetration depth, good waterproof, anti-permeability and crack-resistant effects and the like; and meanwhile, the invention has the advantages of low production cost, simple preparation ...

Light composite steelmaking protective agent (slag)

This invention opens a kind of new type light compound steelmaking protective,which includes following factors: micropowder coal ash 35-50%,red mud 30-45%,carbon element remnant 10-20%, fluxing agent 5-15%, little regulator(calcium). The method of making is : mix micropowder coal ash, red mud levigated separately, carbon element remnant and fluxing agent according to calculate and match the compositions and contents as in the practice, being less than 1% of water. New type light compound steelmakeing protective made of dry micropowder coal ash which is less than 28 mum and red mud is excellent with simple process, little investment, wide material source, good effect, low cost. It can also make use of industrial waste a lot, in favor of protection of environment and dealing with staple solid waste, have good economic benefits and social benefits.

Method for consolidating waste incineration fly ash heavy metal through microorganism cement mineralization

The invention discloses a method for consolidating waste incineration fly ash heavy metal through microorganism cement mineralization. Through the method disclosed by the invention, microorganism cement is obtained and a microorganism cement bonded product, namely calcite, is obtained, and the calcite is used for consolidating waste incineration fly ash according to the method. A consolidated product formed by consolidating the waste incineration fly ash with the method is low in heavy metal leaching and high in stability of induration, and can be used as a building material.